砂性地基中船坞基坑降水对临近板桩码头位移影响分析

Effect on displacement of sheet-pile wharf due to nearby dock foundation pit dewatering in sandy site

在砂性场地中建造船坞时,船坞基坑降水施工对临近板桩码头的位移有较大的影响,甚至会出现板桩墙的位移向岸侧移动的现象。结合新加坡某新建船厂工程,对船坞基坑降水施工过程中板桩位移的实际监测成果进行分析与研究,并应用PLAXIS有限元程序进行数值模拟分析,其计算结果进一步验证了监测结果位移趋势的正确性。

During dock construction in sandy site,the dewatering of dock foundation pit affects the displacement of sheet-pile wharf nearby.It can even appear the phenomenon that the sheet pile wall moves to the shore side.Based on a new shipyard project in Singapore,this paper presents the analysis and research for the results of the sheet pile wall displacement monitoring during the dewatering work,and also presents numerical simulation by the application of finite element program PLAXIS.The result of numerical simulation further verifies the correctness of the results of displacement monitoring.