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[1]QIN Hongguo,LI Ping,ZHANG Zhichao,et al.Seismic Fragility and Life-cycle Performance Assessment of the Continuous Beam Bridge Isolated with SMA-LRB[J].Journal of Seismological Research,2023,46(04):562-574.[doi:10.20015/j.cnki.ISSN1000-0666.2023.0030]

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Seismic Fragility and Life-cycle Performance Assessment of the Continuous Beam Bridge Isolated with SMA-LRB

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 46 Number of periods: 2023 04 Page number: 562-574 Column: Public date: 2023-12-01

Title:: Seismic Fragility and Life-cycle Performance Assessment of the Continuous Beam Bridge Isolated with SMA-LRB

Author(s):: QIN Hongguo; LI Ping; ZHANG Zhichao; WANG Haohao; SHI Yan; (School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,Gansu,China)

Keywords:: continuous beam bridge; seismic isolation; Lead Rubber Bearings; the Shape Memory Alloy; seismic fragility

CLC:: P315.925; U448.23

DOI:: 10.20015/j.cnki.ISSN1000-0666.2023.0030

Abstract:: In order to study the seismic fragility and life-cycle performance of the continuous beam bridges isolated by Lead Rubber Bearings(LRB)and the Shape Memory Alloy supplemented Lead Rubber Bearings(SMA-LRB)respectively,the damage probabilities of the two types of bridges in four damaged conditions were compared,and then the life-cycle performance evaluation method was used to quantify the bridges’ seismic losses in the form of money.The results show that the SMA-LRB isolation system can effectively decrease the damage probability of bearings and that of the pier seriously and completely damaged.The bridge life-cycle losses can be significantly reduced by SMA-LRB when the ground motion is weak.

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Last Update: 2023-10-01