T形组合地下连续墙开挖及三维数值模拟分析  

Analysis on Excavation of T-combined Continuous Concrete Wall and 3-D Numerical Simulation

作　　者：汤彬彬[1,2] 高明军[1,2] 孙召花[1,2] 吴若文 

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学岩土工程科学研究所,江苏南京210098 [3]温州港城发展有限公司,浙江温州325000

出　　处：《水利与建筑工程学报》2014年第2期117-120,135,共5页Journal of Water Resources and Architectural Engineering

摘　　要：通过对南京某在建大型深基坑工程开挖过程中T形组合地下连续墙的分析,利用ABAQUS有限元软件建立T形组合地下连续墙开挖三维有限元模型。主要对墙体水平位移及墙顶、地表沉降和墙体应力进行模拟。同时对监测数据与模拟数据进行了分析。结论表明:现场监测数据和模拟数据吻合度较好,T形组合地下连续墙增加整体抗弯能力,墙体结合处有应力集中现象。为类似地质条件下的T形组合地下连续墙开挖施工及监测提出相关建议。The three-dimensional finite element model of the T-combined continuous concrete wall is built by using the fi-nite element software ABAQUS through the analysis of a large deep foundation pit ’s excavation process under construction in Nanjing .The surface settlement ,lateral wall displacement and wall stress are simulated and monitored mainly .At the same time ,the monitoring data are analyzed .The results show that the simulated data could coincide with the monitoring data ,the T-combined continuous concrete wall could increase the overall flexural capacity ,and the stress concentration phenomenon would appear in wall junction .The related construction and monitoring suggestions are put forward for the T-combined continuous concrete wall under similar geological conditions .

关 键 词：T 形组合地下连续墙 地表沉降 墙体水平位移 数值模拟 

分 类 号：TV554.6[水利工程—水利水电工程]