The Fifth Bridge

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Proposal for the Structural Engineering Design Contest by Bastian Gerke and Markus Dörre

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The Fifth Bridge

  1. 1. Fakultätsname XYZ Fachrichtung XYZ Institutsname XYZ, Professur XYZ The 5th Bridge Stuctural Engineering Design International Competition: Design proposal for the fifth bridge over River Urumea in Donostia – San Sebastian (Spain) Colegio de Ingenieros de Caminos, Canales y Puertos Madrid 14.11.2008
  2. 2. Markus Dörre: M k Dö Bastian G k B ti Gerke: -Final secondary school examinations -Final secondary school examinations in Erfurt, Germany in 2003 in Hamm, Germany in 2004 -Study at the TU Dresden - 9th Semester -Study at the TU Dresden - 9th Semester -Work experience: Friedrich & Lochner GmbH – -assistent at the institute for steel construction Nemetschek Group - Dresden -assistent at the institute for solid construction -Work experience: Engels & Partner Dortmund, Baubüro Müller Dresden, Krebs und Kiefer consulting engineers - Dresden Madrid, 24.03.2009 THE FIFTH BRIDGE Page 2 of 18
  3. 3. Main Concept: To fi d T find an ECONOMIC , but also ATTRACTIVE solution, which fits in the existing ENVIRONMENT . Madrid, 24.03.2009 THE FIFTH BRIDGE Page 3 of 18
  4. 4. ENVIRONMENT / Surrounding Area Madrid, 24.03.2009 THE FIFTH BRIDGE Page 4 of 18
  5. 5. ENVIRONMENT / Surrounding Area Existing Bridges: -Typology of arch-bridges -Load bearing structures below the gradient Decision: -The “5th Bridge“ doesn`t need a extra ordinary supporting structure -The “5th Bridge“ needs a soberly and simple The 5th Bridge appearance with a clear structure below the gradient Madrid, 24.03.2009 THE FIFTH BRIDGE Page 5 of 18
  6. 6. ATTRACTIVENESS Madrid, 24.03.2009 THE FIFTH BRIDGE Page 6 of 18
  7. 7. ATTRACTIVENESS Madrid, 24.03.2009 THE FIFTH BRIDGE Page 7 of 18
  8. 8. ATTRACTIVENESS -No additional support in the area of the river ( nice challenge) -To “haunche“ the girder to the support, more than usually necessary Increase in stiffness at the restraint abutement Attract the forces to the restraint abutement Mode of action like two cantilevers Reach an extreme slimness of the visible profile / in the center of the bridge Form of the girder is like an arch, which integrates the bridge in the environment -Cut notches in the girder more transparency and framework behaviour -All in all: On the one hand, the profile takes itself back, but on the other All i ll O th h d th fil t k it lf b k b t th th hand the profile sticks out through its outstanding slimness, which demonstrates the big challenge for the engineers. Madrid, 24.03.2009 THE FIFTH BRIDGE Page 8 of 18
  9. 9. ECONOMY / CONSTRUCTION METHOD -5 composite construction beams of a high strength steel (S355 or S460) -Composite construction is a well known construction method Composite -The efficient exploitation of material properties in combination with modern calculation methods should be the planning challenge to reach the absolute limit of this modern composite construction f -The free span over the river avoids a cost-intensive deep foundation Madrid, 24.03.2009 THE FIFTH BRIDGE Page 9 of 18
  10. 10. Economy / construction method Madrid, 24.03.2009 THE FIFTH BRIDGE Page 10 of 18
  11. 11. Economy / construction method Madrid, 24.03.2009 THE FIFTH BRIDGE Page 11 of 18
  12. 12. Economy / construction method Madrid, 24.03.2009 THE FIFTH BRIDGE Page 12 of 18
  13. 13. ECONOMY / CONSTRUCTION METHOD Madrid, 24.03.2009 THE FIFTH BRIDGE Page 13 of 18
  14. 14. ECONOMY / CONSTRUCTION METHOD -The big advantage is the short construction time -The main vision is to install the girders in one piece complete prefabrication of the girders in combination with a oversea delivery, due to delivery the near to the coast (alternative solution would be a 2-piece delivery and a welded joint on site - directly in the center of the bridge) -Through the efficient application of a “l Th h th ffi i t li ti f “loosen f formwork“ (prefabricated k“ ( f b i t d concrete deck elements) it`s possible to pour the concrete deck without an installation of a scaffold in the area of the river. It`s also possible to avoid the difficult cantilever construction method. Madrid, 24.03.2009 THE FIFTH BRIDGE Page 14 of 18
  15. 15. Finished Bridge – “The 5th Bridge“ Madrid, 24.03.2009 THE FIFTH BRIDGE Page 15 of 18
  16. 16. Madrid, 24.03.2009 THE FIFTH BRIDGE Page 16 of 18
  17. 17. Madrid, 24.03.2009 THE FIFTH BRIDGE Page 17 of 18
  18. 18. Thank you for your attention! Madrid, 24.03.2009 THE FIFTH BRIDGE Page 18 of 18

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