TY - GEN
T1 - Pretensioned, rocking bridge columns for accelerated construction and enhanced seismic performance
AU - Thonstad, Travis
AU - Mantawy, Islam M.
AU - Eberhard, Marc O.
AU - Stanton, John F.
AU - Sanders, David H.
N1 - Publisher Copyright:
© 2018 Ingenta.
PY - 2017
Y1 - 2017
N2 - A new precast bridge bent system has been developed that accelerates on-site construction activities, minimizes residual displacements even after large seismic events and reduces post-earthquake damage. The connections are the key to the system's seismic performance. They were tested under quasi-static conditions and found to perform exceptionally well with nearly zero strength degradation and little concrete damage, even after being loaded cyclically up to drift ratios of 10%. The restoring properties of the system were evaluated through multi-shaking table tests conducted on a quarter-scale, two-span bridge specimen. The maximum residual drift ratio during testing was 0.4%, even after excursions to drift ratios exceeding 13%. This paper describes the new system, compares its performance to that of more conventional cast-in-place construction, and describes key aspects of its design philosophy.
AB - A new precast bridge bent system has been developed that accelerates on-site construction activities, minimizes residual displacements even after large seismic events and reduces post-earthquake damage. The connections are the key to the system's seismic performance. They were tested under quasi-static conditions and found to perform exceptionally well with nearly zero strength degradation and little concrete damage, even after being loaded cyclically up to drift ratios of 10%. The restoring properties of the system were evaluated through multi-shaking table tests conducted on a quarter-scale, two-span bridge specimen. The maximum residual drift ratio during testing was 0.4%, even after excursions to drift ratios exceeding 13%. This paper describes the new system, compares its performance to that of more conventional cast-in-place construction, and describes key aspects of its design philosophy.
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M3 - Conference contribution
AN - SCOPUS:85050022521
T3 - IABSE Conference, Vancouver 2017: Engineering the Future - Report
SP - 1304
EP - 1311
BT - IABSE Conference, Vancouver 2017
PB - International Association for Bridge and Structural Engineering (IABSE)
T2 - 39th IABSE Symposium in Vancouver 2017: Engineering the Future
Y2 - 21 September 2017 through 23 September 2017
ER -