Dynamic Behavior of Gravity Retaining Walls with Coral Sand Backfill Under Earthquakes:Shaking Table Tests  

作　　者：ZHANG Yan-ling WANG Cheng-long DING Xuan-ming WU Qi 

机构地区：[1]College of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China [2]Key Laboratory of New Technology for Construction of Cities in Mountain Area,School of Civil Engineering,Chongqing University,Chongqing 400045,China

出　　处：《China Ocean Engineering》2022年第6期839-848,共10页中国海洋工程（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.41831282 and 51878103);the Fundamental Research Funds for the Central Universities(Grant No.2021CDJQY-042);Chongqing Talents Program(Grant No.cstc2021ycjh-bgzxm0051).

摘　　要：The retaining walls in coral sand sites are inevitably threatened by earthquakes. A series of shaking table tests were carried out to study the seismic stability of gravity retaining walls with coral sand backfill. Parallel tests with quartz sand were performed to compare and discuss the special dynamic properties of coral sand sites. The results show that the acceleration difference between the retaining wall and the coral sand backfill is 76%-92% that of the quartz sand,which corresponds to the larger liquefaction resistance of coral sand compared with the quartz sand. However, the horizontal displacement of the retaining walls with coral sand backfill reaches 79% of its own width under 0.4g vibration intensity. The risk of instability and damage of the retaining walls with coral sand backfill under strong earthquakes needs attention.

关 键 词：coral sand seismic response LIQUEFACTION shaking table test gravity retaining walls 

分 类 号：TU435[建筑科学—岩土工程] TU476.4[建筑科学—土工工程]