Seismic response of flexible cantilever retaining walls with dry backfill
Seismic response of flexible cantilever retaining walls with dry backfill
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DOI：
10.1080/17486020601039170
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发表时间：
2006-12
期刊：
影响因子：
--
通讯作者：
S. Madabhushi;X. Zeng
中科院分区：
文献类型：
--
作者：
S. Madabhushi;X. Zeng
在过去，挡土墙在地震中的破坏已经发生过多次。虽然重力式刚性挡土墙的地震反应分析已取得了很大的进展，但由于土-结构动力相互作用的复杂性，悬臂式柔性挡土墙的抗震设计仍存在相当大的困难。本文采用离心模型和数值模拟相结合的方法，对干填土悬臂式挡土墙的地震反应进行了数值模拟。研究发现，地震时墙体的弯矩显着增加。基础震动结束后，墙体上的残余弯矩明显高于静载作用下的弯矩。数值模拟能够相当准确地模拟离心试验中记录的加速度、弯矩和位移的主要特征。
Failure of retaining walls during earthquakes has occurred many times in the past. Although significant progress has been made in analysing the seismic response of rigid gravity type retaining walls, considerable difficulties still exist in the seismic-resistant design of the flexible cantilever type of retaining walls because of the complex nature of the dynamic soil–structure interaction. In this paper the seismic response of cantilever retaining walls with dry backfill is simulated using centrifuge modelling and numerical modelling. It is found that bending moments on the wall increased significantly during an earthquake. After the end of base shaking, the residual moment on the wall was significantly higher than the moment under static loading. The numerical simulation is able to model quite accurately the main characteristics of acceleration, bending moment, and displacement recorded in the centrifuge test.