TY - JOUR
T1 - Seismic Performance Assessment of Quasi-Isolated Highway Bridges with Seat-Type Abutments
AU - Luo, Jie
AU - Fahnestock, Larry Alan
AU - LaFave, James Michael
N1 - Publisher Copyright:
© 2019, © 2019 Taylor & Francis Group, LLC.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - In recent years, Illinois bridge engineers developed an innovative “quasi-isolation” seismic bridge design methodology. The objectives of this study are to assess the seismic performance of prototype quasi-isolated highway bridges, to validate the design strategy, and to provide recommendations for improving bridge seismic performance. A matrix of bridges was computationally studied. Seismic assessment results validate that the current quasi-isolation design strategy is generally effective in preventing global collapse, but the response of a small number of bridges demonstrated a relatively high risk of bearing unseating and severe pier damage. Recommendations for calibrating the current design strategy have therefore been proposed.
AB - In recent years, Illinois bridge engineers developed an innovative “quasi-isolation” seismic bridge design methodology. The objectives of this study are to assess the seismic performance of prototype quasi-isolated highway bridges, to validate the design strategy, and to provide recommendations for improving bridge seismic performance. A matrix of bridges was computationally studied. Seismic assessment results validate that the current quasi-isolation design strategy is generally effective in preventing global collapse, but the response of a small number of bridges demonstrated a relatively high risk of bearing unseating and severe pier damage. Recommendations for calibrating the current design strategy have therefore been proposed.
KW - Base isolation highway bridge response
KW - history analysis bearing unseating seismic damage
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U2 - 10.1080/13632469.2019.1628125
DO - 10.1080/13632469.2019.1628125
M3 - Article
AN - SCOPUS:85068534659
JO - Journal of Earthquake Engineering
JF - Journal of Earthquake Engineering
SN - 1363-2469
ER -