CAJ | 학술논문

针对目前减隔震技术在我国桥梁领域的推广应用，建立一座隔震桥梁，基于增量动力分析(IDA)方法研究了桥梁在单条地震动下的动态响应，得到了桥墩以及支座在地震动作用下的响应曲线(IDA曲线)。以桥墩位移延性系数和支座剪应变作为损伤指标，对IDA曲线进行损伤状态区间的划分。通过IDA曲线发现隔震桥梁具有良好的抗震性态，支座比桥墩更容易损伤。最后，将支座和桥墩综合考虑计算得到桥梁结构整体易损性(DS)。
침대목전감격진기술재아국교량영역적추엄응용，건립일좌격진교량，기우증량동력분석(IDA)방법연구료교량재단조지진동하적동태향응，득도료교돈이급지좌재지진동작용하적향응곡선(IDA곡선)。이교돈위이연성계수화지좌전응변작위손상지표，대IDA곡선진행손상상태구간적화분。통과IDA곡선발현격진교량구유량호적항진성태，지좌비교돈경용역손상。최후，장지좌화교돈종합고필계산득도교량결구정체역손성(DS)。
Aiming at the popularization and application of the anti-seismic technology in our country's bridge field, this paper establishes a isolated bridge, based on incremental dynamic analysis ( IDA) method and studies the dynamic response of the bridge under single ground motions, finally gets the response curve ( IDA curve) of the pier and abutment under ground motions. Using the displacement ductility factor of the pier and abutment shear strain as the damage index, this paper divides the damage state interval of IDA curves. According to the IDA curves, we can find the isolated bridge has a good seismic performance, and the bearing is more easy to damage than the pier. Finally, we calculate the overall vulnerability damage state of the bridge by considering the stand and piers as a whole.