Seismic Resilience of Pre-Tensioned Bridge Bents (NEES-2013-1216)

<p><strong>Title:</strong> Seismic Resilience of Pre-Tensioned Bridge Bents (NEES-2013-1216)</p> <p><b>Year Of Curation: </b>2015</p> <p><b>Description: </b>This research investigates a system to simultaneously achieve three major advances in the design and construction of bridge bents: improved seismic performance, faster on-site construction, and better long-term durability. First, the seismic performance will be addressed through the use of unbonded pre-tensioned columns, with the goal of re-centering the bridge after an earthquake. Second, the faster on-site construction is to be achieved through the use of pre-fabrication, which typically goes hand-in-hand with pre-tensioning. Connection details are critical, but basic configurations for them have already been developed. Third, the long-term durability is to be addressed by the use of high performance materials (hybrid fiber-reinforced concrete (HyFRC), stainless steel bars, and epoxy-coated strands) in key areas. Pilot studies have already been conducted and have shown that the system possesses the desired fundamental characteristics and has the potential to deliver the anticipated benefits. However, key aspects of the system need to be investigated, and numerical models need to be developed to investigate its dynamic performance under a wide variety of conditions. This research is a collaboration among the University of Washington, University of California at Berkeley, and University of Nevada, Reno. The testing of a two-span bridge designed with this new system will be conducted using the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) shake table facility at the University of Nevada, Reno. Data from this project will be archived and made available to the public through the NEES Project Warehouse data repository at http://www.nees.org.</p> <p><b>Award: </b>http://www.nsf.gov/awardsearch/showAward?AWD_ID=1207903</p> <p><b>PIs & CoPIs: </b>John Stanton, Marc Eberhard, David Sanders</p> <p><b>Dates: </b>May 15, 2012 - April 30, 2015</p> <p><b>Organizations: </b>University of California, Berkeley, CA, United States,    University of Nevada-Reno, NV, United States,    University of Washington, WA, United States</p> <p><b>Facilities: </b>University of Washington, WA, United States,    University of Nevada-Reno, NV, United States</p> <p><b>Sponsor: </b>NSF -1207903</p> <p><b>Keywords: -- </b></p> <p><b>Publications: --</b></p> <nb:citations></nb:citations>