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181129 GAMACO 30 ans

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Francois Lepers

The document discusses 30 years of experience with post-tensioned concrete structures. It provides details on various post-tensioning technologies including flat PT slabs, PT slabs with drop panels, slabs with PT beams, waffle PT slabs, lightened PT slabs, PT slabs on filigran slabs, and PT foundation rafts. It also discusses PT transfer structures and other applications such as wall prestressing, concrete truss beams, and external reinforcement of existing structures. Case studies and details are given for numerous projects utilizing these post-tensioning technologies.

Engineering
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30 years of experience in post-tensioned concrete
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Strands • 100mm² - 139 mm² - 150 mm² • Fp0.1k = 1640 MPa • Fpk = 1860 MPa Various technologies of post-tensioning Rigid bars • D 25 to 50 mm • Fp0.1k = 835 MPa • Fpk = 1030 MPa Prestressing steel
Bonded prestessing – High capacity system • 3 to 55 strands • Circular ducts • Used in bridges and beams note : the same type of anchorages may be used in combination with unbonded systems for special cases Various technologies of post-tensioning
Bonded prestessing – Low capacity systems • 3 to 4 strands • Flat ducts Various technologies of post-tensioning
Unbonded prestressing - monostrands Various technologies of post-tensioning
Rigid bars systems Various technologies of post-tensioning
Differences between bonded and unbonded systems in buildings • Price -> depending on the PT supplier own costs • Design rules : one of the most important difference is the allowable crack with limits (table 7.1N in EN1992-1-1) Various technologies of post-tensioning
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Flat PT slabs bi-directional behavior – no beams Classical Span/depth ratio : (Hyperstatic slabs) Admissible spans : usually 6 to 12 m, but 16m often used in parking structures Typical passive reinforcement : general bottom mesh, top bars over the columns only, punching shear reinforcement and bursting/edge reinforcement Overloads Span/Depth 1.5 kPa Up to L/45 2.5 kPa Up to L/40 5.0 kPa Up to L/35
Flat PT slabs 150 000 m² of flat PT slabs: 30000m² in 2004 (Cordeel) 75000m² in 2013 (CEI De Meyer & Jan De Nul) 40000m² in 2016 (BAM) Flat slab 250mm Typical grid : 8.1m x 8.1m Typical overloads : 6.0 kPa Unbonded & bonded system 75000m² = 7 months on site ! +- 600m²/week/crane (5 cranes) AZ GROENINGE - KORTRIJK
Flat PT slabs 45 000 m² of flat PT slabs Mixed building : parking, hotel, gardens, shopping mall & offices Spans from 6.0m to 8.5m EUROMED CENTER II – MARSEILLE - FRANCE
Flat PT slabs 3 000 m² of flat PT slabs (currently in progress) 6 levels of offices Spans : max 8.5m Cantilevers : max 3.5m Slab depth : 300mm, including integrated heating/cooling system (active floor) DOCKS DE LYON – LYON - FRANCE
Flat PT slabs 8000m² of flat PT slabs Spans : Maximum 17.0m Overloads: 6.0 kPa Slab depth : 35 cm Main engineer : INCA ARENDT HOUSE – KIRCHBERG - LUXEMBURG 17m
Flat PT slabs 10000m² of flat PT slabs Spans : 10m x 10 m Overloads : 5.0 kPa Slab depth : 300 mm GHELAMCO ARENA - GENT
Flat PT slabs 12500m² of flat PT slabs 2 levels of parking 1 roof level with high loadings Spans : 16.0m x 6.0 m Overloads : Parking 2.5 kPa Roof 22.0 kPa Slab depth : Parking 350 mm Roof 550 mm PUBLIC PARKING – LA GARDE - FRANCE
Flat PT slabs 10000m² of flat PT slabs 2 levels of parking 1 roof level with high loadings Spans : 16.0m x 6.0 m Overloads : Parking 2.5 kPa Roof 25 to 30 kPa Slab depth : Parking 350 mm Roof 550 mm PUBLIC PARKING – BETHUNE - FRANCE
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Flat PT slabs with drop panels bi-directional behavior – no beams Classical Span/depth ratio : (Hyperstatic slabs) Admissible spans : from 10 to 16m Overloads Span/Depth 2.5 kPa Up to L/45 5.0 kPa Up to L/40
Flat PT slabs with drop panels 15 000m² of flat PT slabs Project of commercial center Spans : 16.0m x 16.0 m Overloads : 15 kPa Slab depth : 400mm + capital 4000x4000x300mm COMMERCIAL CENTER IKEA – MOSCOW - RUSSIA
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola Arches VI. Footbridges VII. U beam bridges VIII. Underslung cable structures IX. External reinforcement of existing structures with external PT X. Autoripage© / Autofoncage©
slabs with PT beams one-directional behavior Classical Span/depth ratio : (Hyperstatic slabs) Typical example : grid 16.0m x 8.0m Overloads PT Slab Span/Depth Beams Span/Depth 2.5 kPa Up to L/45 Up to L/25 5.0 kPa Up to L/40 Up to L/20 bi-directional behavior Classical Span/depth ratio : (Hyperstatic slabs) Typical example : square grids from 12.0m to 20.0 m Overloads Slab Span/Depth Beams Span/Depth 2.5 kPa Up to L/45 Up to L/30 5.0 kPa Up to L/40 Up to L/25
Slabs with PT beams 35 000 m² Spans : 16.0m x 8.0 m Overloads : 2.5 kPa Slab depth : 200 mm Beams : 1000x600mm RC slab & 1 way PT beams PARKING & COMMERCIAL CENTER LECLERC – ROQUES (TOULOUSE) - FRANCE
Slabs with PT beams 35 000 m² Spans : 16.0m x 16.0 m Overloads : 5.0 kPa PT Slab depth : 30cm Flat beams : 300x60cm in 2 directions PARKING OF THE AIRPORT – ISTANBUL - TURKIE
Slab with PT beams SPORT CENTER - RUEIL ARSENAL - FRANCEArchitect : Rudy Ricciotti Beam span up to 35m
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
bi-directional behavior Classical Span/depth ratio : (Hyperstatic slabs) Admissible spans : up to 16m Waffle PT slabs Overloads Span/Depth 2.5 kPa Up to L/30 5.0 kPa Up to L/25
Parking 28 000 m² Grid 16.0m x 7.0m Waffle slab 400mm Waffle PT slabs PARKING OF A COMMERCIAL CENTER - AIX-EN-PROVENCE - FRANCE
Ovoïdal shape in plan view Waffle slab with variable thickness Waffle PT slabs ERNST&YOUNG - KIRCHBERG - LUXEMBURG
Architect : Rudy Ricciotti White concrete 25 000 m² of PT slabs grid : 16m x 7.5m Waffle PT slabs PARKING – FLOIRAC - FRANCE
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Lightened PT slabs Basic solution : polystyrene blocs (IMEC tower) Other solutions : Cobiax, Uboot, Bubbledeck, … The self-weight reduction is typically about 20% to 30% with this kind of solution. This allows to reduce the PT and RC ratios in the slabs. The economical balance has to be checked between material earnings and weight-reducing element costs.
Lightened PT slabs 11 000 m² of lightened slabs Isostatic spans : 10.5 m Overloads : 2.5 kPa Slab depth : variable from 30 to 35 cm Lightening elements : Uboot PARKING ARLEQUIN – GRENOBLE - FRANCE
Lightened PT slabs 25 000 m² of lightened slabs High-rise building – 44 floors max spans : 9.20m Slab thickness : 230 mm + Cobiax SL 120 Overloads : 5.0 kPa TWARDA TOWER – WARSAW - POLAND
Lightened PT slabs Slab thickness : 500mm, with polystyren blocs IMEC TOREN - LEUVEN
Lightened PT slabs 68 000 m² of lightened slabs (2018-2020) High-rise building - 45 floors Slab thickness : 320 mm with Uboot + local flat beam 450mm TOUR HEKLA – LA DEFENSE - PARIS
Lightened PT slabs Preliminary design for a combined solution AIRDECK + PT slab. SOLVAY – BRUXELLES
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
PT slabs on filigran slabs BRUSSELS AIRPORT - ZAVENTEM Terminal & Pier B 150 000 m² Grid 8.0m x 8.0m
PT slabs on filigran slabs MAISON DU SAVOIR – BELVAL - LUXEMBURG Cable profile Typical section
PT slabs on filigran slabs MAISON DU SAVOIR – BELVAL - LUXEMBURG
PT slabs on filigran slabs ECOLE STE MARIE - REVES
PT slabs on filigran slabs PARKING EUROSTADIUM & CAMPUS - GRIMBREGEN 300 000 m² (design stage only – not build) Grid 15.4m x 7.5m
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
PT Foundation rafts WATER TREATMENT PLANT OF BRUSSELS NORTH - BRUSSELS Foundation raft on piles : 25 000 m² Other PT slabs : 50 000m² General contractor : Jan De Nul Piled raft supporting 10m of water
PT Foundation rafts HALA CZYZYNY - POLAND Sport hall (Hockey) Foundation raft : 12 500m² Spans : up to 12m Thickness : 1000mm
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Long cantilevers APPARTMENT BUILDING - TEMSE PT slabs 240 mm
Long cantilevers BAELSKAAI - OOSTENDE
Long cantilevers ION - WAREGEM
Long cantilevers LIBRARY OF THE UNIVERSITY – VILLETANEUSE - FRANCECantilever length : 9.5m
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
PT transfer beams AUDITORIUM - BORDEAUX 8 isostatic beams 32 m Superior building with 4 concrete level to support over a spectacle hall Beams 200 x 220 cm
PT transfer beams SPORT HALL - PUTEAUX - FRANCE7 isostatic beams 30 m supporting a building of 4 levels
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
PT transfer slabs CITE JUDICIAIRE - LUXEMBURGBi-directional flat slab Max spans : 17.0m Slab thickness : 130 cm Loadings : 6 levels height building
PT transfer slabs OFFICE BUILDING – RUEIL MALMAISON - FRANCECantilever length : 2.0m Transfer slab supporting a bearing façade
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Wall post tensioning MAISON DU SAVOIR – BELVAL - LUXEMBURG2 cantilevers : 25m each 1 central span > 50m
Wall post tensioning MAISON DU SAVOIR – BELVAL - LUXEMBURG 2 facade walls 2 inner walls
Wall post tensioning MAISON DU SAVOIR – BELVAL - LUXEMBURG Inner walls Central span 50 m Tower basement Right cantilever 25 m Dilatation joint
Wall post tensioning MAISON DU SAVOIR – BELVAL - LUXEMBURG Facade walls Central span 50 m Tower basement Right cantilever 25 m Dilatation joint
• Prestressed extranal concrete walls • Prestressing is foreseen to compensate thermal effects, to reduce the tensile stresses and reduce the cracks Wall post tensioning RESTAURANT UNIVERSITAIRE - LUXEMBURG
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
PT concrete truss HOTEL DE REGION – TOULOUSE - FRANCE PT truss beam PT in the tie elements of the truss Cantilever 6.0m
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Catenary structures KUL - LEUVEN
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Hangers TWARDA TOWER – WARSAW - POLANDHigh-rise building (160m) 44 levels Cantilever 11m PT Hangers
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Annular compression = reduced cracks / no cracks PT concrete in Silo’s & cupola Arches SIAP - WATER TREATMENT PLANT – TEILLET - FRANCE Other similar projects : STEP Beaurade (8800m³), Sanofi Cleon (9500m³ + 15900m³), SIAP (2x7500m³), Vigneux de Bretagne (3800m³), Digesteur Calais, Plehaut, …
PT concrete in Silo’s & cupola Arches WATER TOWER - PLEHAUT - FRANCE
Control of an existing cupola Arches as part of transformation/renovation works. Design of external PT reinforcement if needed. Diameter : 35m PT concrete in Silo’s & cupola Arches MARCHE DU FOIRAIL – PAU - FRANCE
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Arches HEADQUARTER OF BNP PARIBAS FORTIS - BRUSSELS
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Footbridges PASSERELLE PASTEUR-SCIENCES – LOUVAIN LA NEUVE
Footbridges BORDET STATION - EVERE
Footbridges ZUIDERPOORTBRUG - GENT
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
U-beam bridges
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
Underslung cable structures PRINCESSE GRACE HOSPITAL - MONACO
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
External PT reinforcement of existing structures Legend: Main beams Carbon fiber reinforcement of the main beams External PT reinforcement of the secondary beams EXHIBITION HALLS - CHARLEROI
Vertical component of the equivalent loads due to PT External PT reinforcement of existing structures EXHIBITION HALLS - CHARLEROI
External PT reinforcement of existing structures BRUG - MORTSEL
External PT reinforcement of existing structures BRIDGE - VALENCIENNES- FRANCE
External PT reinforcement of existing structures STORAGE HALL- FRANCE
30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola Arches VI. Footbridges VII. U beam bridges VIII. Underslung cable structures IX. External reinforcement of existing structures with external PT X. Autoripage© / Autofoncage©
Autofonçage © / Autoripage © PK 125 + PK111 - Maroc
30 years of experience in post-tensioned concrete

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181129 GAMACO 30 ans

  • 1. 30 years of experience in post-tensioned concrete
  • 2. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 3. Strands • 100mm² - 139 mm² - 150 mm² • Fp0.1k = 1640 MPa • Fpk = 1860 MPa Various technologies of post-tensioning Rigid bars • D 25 to 50 mm • Fp0.1k = 835 MPa • Fpk = 1030 MPa Prestressing steel
  • 4. Bonded prestessing – High capacity system • 3 to 55 strands • Circular ducts • Used in bridges and beams note : the same type of anchorages may be used in combination with unbonded systems for special cases Various technologies of post-tensioning
  • 5. Bonded prestessing – Low capacity systems • 3 to 4 strands • Flat ducts Various technologies of post-tensioning
  • 6. Unbonded prestressing - monostrands Various technologies of post-tensioning
  • 7. Rigid bars systems Various technologies of post-tensioning
  • 8. Differences between bonded and unbonded systems in buildings • Price -> depending on the PT supplier own costs • Design rules : one of the most important difference is the allowable crack with limits (table 7.1N in EN1992-1-1) Various technologies of post-tensioning
  • 9. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 10. Flat PT slabs bi-directional behavior – no beams Classical Span/depth ratio : (Hyperstatic slabs) Admissible spans : usually 6 to 12 m, but 16m often used in parking structures Typical passive reinforcement : general bottom mesh, top bars over the columns only, punching shear reinforcement and bursting/edge reinforcement Overloads Span/Depth 1.5 kPa Up to L/45 2.5 kPa Up to L/40 5.0 kPa Up to L/35
  • 11. Flat PT slabs 150 000 m² of flat PT slabs: 30000m² in 2004 (Cordeel) 75000m² in 2013 (CEI De Meyer & Jan De Nul) 40000m² in 2016 (BAM) Flat slab 250mm Typical grid : 8.1m x 8.1m Typical overloads : 6.0 kPa Unbonded & bonded system 75000m² = 7 months on site ! +- 600m²/week/crane (5 cranes) AZ GROENINGE - KORTRIJK
  • 12. Flat PT slabs 45 000 m² of flat PT slabs Mixed building : parking, hotel, gardens, shopping mall & offices Spans from 6.0m to 8.5m EUROMED CENTER II – MARSEILLE - FRANCE
  • 13. Flat PT slabs 3 000 m² of flat PT slabs (currently in progress) 6 levels of offices Spans : max 8.5m Cantilevers : max 3.5m Slab depth : 300mm, including integrated heating/cooling system (active floor) DOCKS DE LYON – LYON - FRANCE
  • 14. Flat PT slabs 8000m² of flat PT slabs Spans : Maximum 17.0m Overloads: 6.0 kPa Slab depth : 35 cm Main engineer : INCA ARENDT HOUSE – KIRCHBERG - LUXEMBURG 17m
  • 15. Flat PT slabs 10000m² of flat PT slabs Spans : 10m x 10 m Overloads : 5.0 kPa Slab depth : 300 mm GHELAMCO ARENA - GENT
  • 16. Flat PT slabs 12500m² of flat PT slabs 2 levels of parking 1 roof level with high loadings Spans : 16.0m x 6.0 m Overloads : Parking 2.5 kPa Roof 22.0 kPa Slab depth : Parking 350 mm Roof 550 mm PUBLIC PARKING – LA GARDE - FRANCE
  • 17. Flat PT slabs 10000m² of flat PT slabs 2 levels of parking 1 roof level with high loadings Spans : 16.0m x 6.0 m Overloads : Parking 2.5 kPa Roof 25 to 30 kPa Slab depth : Parking 350 mm Roof 550 mm PUBLIC PARKING – BETHUNE - FRANCE
  • 18. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 19. Flat PT slabs with drop panels bi-directional behavior – no beams Classical Span/depth ratio : (Hyperstatic slabs) Admissible spans : from 10 to 16m Overloads Span/Depth 2.5 kPa Up to L/45 5.0 kPa Up to L/40
  • 20. Flat PT slabs with drop panels 15 000m² of flat PT slabs Project of commercial center Spans : 16.0m x 16.0 m Overloads : 15 kPa Slab depth : 400mm + capital 4000x4000x300mm COMMERCIAL CENTER IKEA – MOSCOW - RUSSIA
  • 21. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola Arches VI. Footbridges VII. U beam bridges VIII. Underslung cable structures IX. External reinforcement of existing structures with external PT X. Autoripage© / Autofoncage©
  • 22. slabs with PT beams one-directional behavior Classical Span/depth ratio : (Hyperstatic slabs) Typical example : grid 16.0m x 8.0m Overloads PT Slab Span/Depth Beams Span/Depth 2.5 kPa Up to L/45 Up to L/25 5.0 kPa Up to L/40 Up to L/20 bi-directional behavior Classical Span/depth ratio : (Hyperstatic slabs) Typical example : square grids from 12.0m to 20.0 m Overloads Slab Span/Depth Beams Span/Depth 2.5 kPa Up to L/45 Up to L/30 5.0 kPa Up to L/40 Up to L/25
  • 23. Slabs with PT beams 35 000 m² Spans : 16.0m x 8.0 m Overloads : 2.5 kPa Slab depth : 200 mm Beams : 1000x600mm RC slab & 1 way PT beams PARKING & COMMERCIAL CENTER LECLERC – ROQUES (TOULOUSE) - FRANCE
  • 24. Slabs with PT beams 35 000 m² Spans : 16.0m x 16.0 m Overloads : 5.0 kPa PT Slab depth : 30cm Flat beams : 300x60cm in 2 directions PARKING OF THE AIRPORT – ISTANBUL - TURKIE
  • 25. Slab with PT beams SPORT CENTER - RUEIL ARSENAL - FRANCEArchitect : Rudy Ricciotti Beam span up to 35m
  • 26. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 27. bi-directional behavior Classical Span/depth ratio : (Hyperstatic slabs) Admissible spans : up to 16m Waffle PT slabs Overloads Span/Depth 2.5 kPa Up to L/30 5.0 kPa Up to L/25
  • 28. Parking 28 000 m² Grid 16.0m x 7.0m Waffle slab 400mm Waffle PT slabs PARKING OF A COMMERCIAL CENTER - AIX-EN-PROVENCE - FRANCE
  • 29. Ovoïdal shape in plan view Waffle slab with variable thickness Waffle PT slabs ERNST&YOUNG - KIRCHBERG - LUXEMBURG
  • 30. Architect : Rudy Ricciotti White concrete 25 000 m² of PT slabs grid : 16m x 7.5m Waffle PT slabs PARKING – FLOIRAC - FRANCE
  • 31. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 32. Lightened PT slabs Basic solution : polystyrene blocs (IMEC tower) Other solutions : Cobiax, Uboot, Bubbledeck, … The self-weight reduction is typically about 20% to 30% with this kind of solution. This allows to reduce the PT and RC ratios in the slabs. The economical balance has to be checked between material earnings and weight-reducing element costs.
  • 33. Lightened PT slabs 11 000 m² of lightened slabs Isostatic spans : 10.5 m Overloads : 2.5 kPa Slab depth : variable from 30 to 35 cm Lightening elements : Uboot PARKING ARLEQUIN – GRENOBLE - FRANCE
  • 34. Lightened PT slabs 25 000 m² of lightened slabs High-rise building – 44 floors max spans : 9.20m Slab thickness : 230 mm + Cobiax SL 120 Overloads : 5.0 kPa TWARDA TOWER – WARSAW - POLAND
  • 35. Lightened PT slabs Slab thickness : 500mm, with polystyren blocs IMEC TOREN - LEUVEN
  • 36. Lightened PT slabs 68 000 m² of lightened slabs (2018-2020) High-rise building - 45 floors Slab thickness : 320 mm with Uboot + local flat beam 450mm TOUR HEKLA – LA DEFENSE - PARIS
  • 37. Lightened PT slabs Preliminary design for a combined solution AIRDECK + PT slab. SOLVAY – BRUXELLES
  • 38. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 39. PT slabs on filigran slabs BRUSSELS AIRPORT - ZAVENTEM Terminal & Pier B 150 000 m² Grid 8.0m x 8.0m
  • 40. PT slabs on filigran slabs MAISON DU SAVOIR – BELVAL - LUXEMBURG Cable profile Typical section
  • 41. PT slabs on filigran slabs MAISON DU SAVOIR – BELVAL - LUXEMBURG
  • 42. PT slabs on filigran slabs ECOLE STE MARIE - REVES
  • 43. PT slabs on filigran slabs PARKING EUROSTADIUM & CAMPUS - GRIMBREGEN 300 000 m² (design stage only – not build) Grid 15.4m x 7.5m
  • 44. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 45. PT Foundation rafts WATER TREATMENT PLANT OF BRUSSELS NORTH - BRUSSELS Foundation raft on piles : 25 000 m² Other PT slabs : 50 000m² General contractor : Jan De Nul Piled raft supporting 10m of water
  • 46. PT Foundation rafts HALA CZYZYNY - POLAND Sport hall (Hockey) Foundation raft : 12 500m² Spans : up to 12m Thickness : 1000mm
  • 47. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 48. Long cantilevers APPARTMENT BUILDING - TEMSE PT slabs 240 mm
  • 51. Long cantilevers LIBRARY OF THE UNIVERSITY – VILLETANEUSE - FRANCECantilever length : 9.5m
  • 52. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 53. PT transfer beams AUDITORIUM - BORDEAUX 8 isostatic beams 32 m Superior building with 4 concrete level to support over a spectacle hall Beams 200 x 220 cm
  • 54. PT transfer beams SPORT HALL - PUTEAUX - FRANCE7 isostatic beams 30 m supporting a building of 4 levels
  • 55. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 56. PT transfer slabs CITE JUDICIAIRE - LUXEMBURGBi-directional flat slab Max spans : 17.0m Slab thickness : 130 cm Loadings : 6 levels height building
  • 57. PT transfer slabs OFFICE BUILDING – RUEIL MALMAISON - FRANCECantilever length : 2.0m Transfer slab supporting a bearing façade
  • 58. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 59. Wall post tensioning MAISON DU SAVOIR – BELVAL - LUXEMBURG2 cantilevers : 25m each 1 central span > 50m
  • 60. Wall post tensioning MAISON DU SAVOIR – BELVAL - LUXEMBURG 2 facade walls 2 inner walls
  • 61. Wall post tensioning MAISON DU SAVOIR – BELVAL - LUXEMBURG Inner walls Central span 50 m Tower basement Right cantilever 25 m Dilatation joint
  • 62. Wall post tensioning MAISON DU SAVOIR – BELVAL - LUXEMBURG Facade walls Central span 50 m Tower basement Right cantilever 25 m Dilatation joint
  • 63. • Prestressed extranal concrete walls • Prestressing is foreseen to compensate thermal effects, to reduce the tensile stresses and reduce the cracks Wall post tensioning RESTAURANT UNIVERSITAIRE - LUXEMBURG
  • 64. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 65. PT concrete truss HOTEL DE REGION – TOULOUSE - FRANCE PT truss beam PT in the tie elements of the truss Cantilever 6.0m
  • 66. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 68. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 69. Hangers TWARDA TOWER – WARSAW - POLANDHigh-rise building (160m) 44 levels Cantilever 11m PT Hangers
  • 70. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 71. Annular compression = reduced cracks / no cracks PT concrete in Silo’s & cupola Arches SIAP - WATER TREATMENT PLANT – TEILLET - FRANCE Other similar projects : STEP Beaurade (8800m³), Sanofi Cleon (9500m³ + 15900m³), SIAP (2x7500m³), Vigneux de Bretagne (3800m³), Digesteur Calais, Plehaut, …
  • 72. PT concrete in Silo’s & cupola Arches WATER TOWER - PLEHAUT - FRANCE
  • 73. Control of an existing cupola Arches as part of transformation/renovation works. Design of external PT reinforcement if needed. Diameter : 35m PT concrete in Silo’s & cupola Arches MARCHE DU FOIRAIL – PAU - FRANCE
  • 74. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 75. Arches HEADQUARTER OF BNP PARIBAS FORTIS - BRUSSELS
  • 76. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 80. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 82. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 83. Underslung cable structures PRINCESSE GRACE HOSPITAL - MONACO
  • 84. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola VI. Arches VII. Footbridges VIII. U beam bridges IX. Underslung cable structures X. External reinforcement of existing structures with external PT XI. Autoripage© / Autofoncage©
  • 85. External PT reinforcement of existing structures Legend: Main beams Carbon fiber reinforcement of the main beams External PT reinforcement of the secondary beams EXHIBITION HALLS - CHARLEROI
  • 86. Vertical component of the equivalent loads due to PT External PT reinforcement of existing structures EXHIBITION HALLS - CHARLEROI
  • 87. External PT reinforcement of existing structures BRUG - MORTSEL
  • 88. External PT reinforcement of existing structures BRIDGE - VALENCIENNES- FRANCE
  • 89. External PT reinforcement of existing structures STORAGE HALL- FRANCE
  • 90. 30 years of experience in post-tensioned concrete I. Introduction The various technologies of post-tensionning II. PT slabs I. Flat PT slabs II. Flat PT slabs with drop panels III. Slabs with PT beams IV. Waffle PT slabs V. Lightened PT slabs VI. PT slabs on filigran slabs VII. PT Foundation rafts VIII. Long cantilevers III. PT transfer structures I. PT transfer beams II. PT transfer slabs IV. Other PT applications I. Wall prestressing II. Concrete truss beams III. Catenary structures IV. Hangers V. Silo’s & cupola Arches VI. Footbridges VII. U beam bridges VIII. Underslung cable structures IX. External reinforcement of existing structures with external PT X. Autoripage© / Autofoncage©
  • 91. Autofonçage © / Autoripage © PK 125 + PK111 - Maroc
  • 92. 30 years of experience in post-tensioned concrete