CM - robustezza resilienza CTA 2013

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Corso di Costruzioni Metalliche: concetti di robustezza e reslienza applicati ad un caso reale

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CM - robustezza resilienza CTA 2013

  1. 1. Robustezza e Resilienza di Sistemi Strutturali e Infrastrutturali Franco Bontempi Professore Ordinario di Tecnica delle Costruzioni Facolta’ di Ingegneria Civile e Industriale Universita’ degli Studi di Roma La Sapienza 1
  2. 2. Str o N GER 2 www.francobontempi.org
  3. 3. Concepts 3
  4. 4. Structural Robustness more robust AVAILABILITY ATTRIBUTE S MAINTAINABILITY SAFETY SECURITY INTEGRITY less robust STRUCTURAL QUALITY RELIABILITY NEGATIVE CAUSE FAULT THREATS ERROR FAILURE it is a defect and represents a potential cause of error, active or dormant the system is in an incorrect state: it may or may not cause failure permanent interruption of a system ability to perform a required function 4 under specified operating conditions
  5. 5. Performance layout OBJECT SLS USE ULS Structural System ILS SAFETY NET Infrastructural System INTEGRITY D Mean Frequent Maximum Rare Accidental Exceptional Black Swan f(D) 5
  6. 6. Life Cycle View RESILIENCE 6
  7. 7. www.francobontempi.org Str o N GER CONSTRUCTIONS RESILIENCE NEW “As Designed” “As Built” EXISTING “As Actual” COLLAPSED “As Failed” 7
  8. 8. CONSTRUCTIONS NEW Activities “As Designed” “As Built” EXISTING “As Actual” COLLAPSED Codes & Standards Information Retrivial Data Mining Risk Analysis Performance Based Design Dependability “As Failed” Conceptual Design Innovatice Concepts Structural Oprimization Advanced Materials Special Devices Structural Control Energy Harvesting DESIGN ENVIRONMENT / BOUNDARY CONDITIONS GEOLOGICAL ASPECTS EARTHQUAKES NATURAL Structural Identification Structural Health Monitoring Damage Assessment Remaining Capacity Structural Refurbishment Structural Augmentation Codes Compliance Historical and Monumental Costructions Back Analysis Forensic Engineering Legal Issues SOIL - STRUCTURE ACTIONS ANTROPIC Fire WIND - STRUCTURE ACCIDENTAL EXCEPTIONAL FSI Explosions HPLC LPHC Black Swan WAVE - STRUCTURE INTERACTIONS Components and Structures Testing Experimental Design 8 Rapid Prototyping
  9. 9. Case 9
  10. 10. 10
  11. 11. www.francobontempi.org Str o N GER Seismic Action 11
  12. 12. www.francobontempi.org Str o N GER Critical Node 12
  13. 13. Infrastructure plan view Representation of the system Individuation of the system/network components 1 WU 7 2 4 3 6 WD HY CU 5 1 RETAINING WALL UP (WU) 2 RETAINING WALL DOWN (WD) 4 CONDUIT UP (CU) 5 CONDUIT ROSALBA 7 3 6 CR HYDROELECTRIC POWER STATION (HY) HYDRAULIC JUNCTION CB ELECTRICITY WATER Outputs CONDUIT PAVONCELLI BIS Node Congestion 13
  14. 14. (0,62) (28.5,62) (53,56) (0,54) (63,45) WU (92,34) WD (92,32) HY (0,29) (92,29) CU CR CB (0,0) (92,0) System with Element connected in Series 14
  15. 15. www.francobontempi.org Str o N GER System with Element connected in Parallel 15
  16. 16. www.francobontempi.org Str o N GER Structural System Degradation 16
  17. 17. Str o N GER 17 www.francobontempi.org
  18. 18. www.francobontempi.org Damage at Local Level Str o N GER 18
  19. 19. www.francobontempi.org Str o N GER Damage at Element Level 19
  20. 20. www.francobontempi.org Str o N GER Damage at Structural Level 20
  21. 21. Design 21
  22. 22. 22
  23. 23. 23
  24. 24. 24
  25. 25. 25
  26. 26. Str o N GER 26 www.francobontempi.org
  27. 27. Concepts again 27
  28. 28. TIGHT couplings LOOSE www.francobontempi.org Str o N GER LINEAR interactions NONLINEAR Perrow 28
  29. 29. Holistic View OBJECT FAR FIELD ZONE EXCHAGE ZONE STRUCTURE Local / Punctual Scale Global / Regional Scale NET INFRASTRUCTURE Structural System Also if artificial, these systems need to have necessarily evolutive soundness, ecological coherence and sustainability characteristics Infrastructural System 29
  30. 30. Structural System 30
  31. 31. RELIABILITY A way to assess the dependability of a system ATTRIBUTES AVAILABILITY MAINTAINABILITY SAFETY the trustworthiness of a system which allows reliance to be justifiably placed on the service it delivers SECURITY INTEGRITY DEPENDABILITY of STRUCTURAL SYSTEMS High level / active performance FAULT THREATS An understanding of the things that can affect the dependability of a system Dependability ERROR FAILURE Low level / passive performance it is a defect and represents a potential cause of error, active or dormant the system is in an incorrect state: it may or may not cause failure permanent interruption of a system ability to perform a required function under specified operating conditions FAULT TOLERANT DESIGN FAULT DETECTION MEANS FAULT DIAGNOSIS ways to increase the dependability of a system 31 FAULT MANAGING
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