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Sustainable Bridges

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Presentation project for ENES216, FLEXUS Women in Engineering Seminar.

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Sustainable Bridges

  1. 1. How can wedesignsustainablebridges?Annie FarbmanLeslie Tillman
  2. 2. Why sustainable bridges? Sustainablebridge design is important looking into the future!  Decreasing carbon footprint  Increasing lifetime and use of important civil infrastructure We chose this topic because:  Annie wants to build bridges and…  Leslie wants to make infrastructure sustainable!
  3. 3. Materials Selection Concrete: Durable, cheap, abundant, pre-cast  Green-Star certified concrete mix plants, high performance or environmentally friendly concrete Steel  Can be recycled steel material, reusable Aluminum  Resistant to corrosion=longer life  Lighter=able to bear larger loads Fiber reinforced polymer (FRP)  Highly resistant to corrosion  Increased strength to weight ratio
  4. 4. Bridge Type ComparisonEnvironmental Concrete (inImpact Bridge Type Steel (in KWh/ft^2) KWh/ft^2)Low viaduct 460 416 girder 798 610 arch 1287 886 cable stay 1041 558Average viaduct 607 558 girder 1016 791 arch 1599 1269 cable stay 1308 1134High viaduct 796 731 girder 1274 1010 arch 1274 1574 cable stay 1954 1416
  5. 5. Design & ConstructionLow energy input-depends on low environmental impactIncreased durability  Longer lifespan, less waste, labor/maintenance, more cost efficientSimplified deconstruction  Aids in ability to be repurposed
  6. 6. Rehabilitation, Demolition andReplacement Steel bridges can use bolted connections for easy deconstruction Bridge preservation or component reuse
  7. 7. Facilitating Sustainable Bridges Service life extension  Investigate and develop new specs  Better management, strengthening and repairing systems Review past/current projects focusing on more sustainable design Need to focus more on end phase  Repairing and rehabilitating
  8. 8. Future Concepts Solarpower Wind harvesting Rainwater collection and wastewater treatment applications
  9. 9. Solar-powered Kurilpa Bridgein Brisbane
  10. 10. Telok Blangah Hill Park’s FlyingInfrastructure in the Sky
  11. 11. Copenhagen Harbor LMProject
  12. 12. Langkawi Sky Bridge, Malaysia
  13. 13. Solar-powered, Inhabitedredesigned London BridgeConcept
  14. 14. Reflection Leslie:New innovative bridges can improve functionality and decrease the environmental impact. Annie: I believe we can easily learn from failed or existing infrastructure in order to design for the future. Our question doesn’t affect us as female engineers, but everyone should be designing for a sustainable future, including lots of women!
  15. 15.  References 1. http://macrete.com/downloadResource?id=81 2. http://www.technologyreview.com/Energy/21117/ 3. http://inhabitat.com/top-5-most-innovative-green-bridges-on-the-planet/ 4. ftp://ftp.wsdot.wa.gov/public/Bridge/WBES2009/B/2B2/2B2.pdf 5. http://wpage.unina.it/cosenza/paper/FRP%20Composites%20for%20Constru ction.pdf 6. http://www.sustainablebridges.net/ 7. http://www.fhwa.dot.gov/publications/publicroads/97spring/high.cfm 8. Ruiz-Teran, Ana M, and Angel C Aparicio. "Developments In Under-Deck And Combined Cable-Stayed Bridges." Bridge Engineering 163.2 (2010): 67- 78. Academic Search Premier. Web. 2 May 2012 9. Jim Kirkpatrick, et al. "Sustainable Bridge Construction Through Innovative Advances." Bridge Engineering 161.4 (2008): 183-188. Academic Search Premier. Web. 2 May 2012. 10. Martin, A. J. "Concrete Bridges In Sustainable Development." Engineering Sustainability 157.4 (2004): 219-230. Academic Search Premier. Web. 2 May 2012.
  16. 16. Questions?

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