广州轨道交通4号线金隆站基坑地连续墙变形研究

Research on Deformation of Diaphragm Wall of Jinlong Station of Line 4, Guangzhou Metro

为了研究地铁明挖深基坑地下连续墙的变形,借助MIDAS/GTS有限元软件,以广州四号线金隆站深基坑标准段为工程实例,建立二维平面有限元模型,对现场的实测数据与软件计算结果进行对比.结果表明,随着开挖深度的增加,地下连续墙水平位移最大的位置逐渐向下移动,支撑的及时架设可有效控制连续墙的变形.所建模型计算结果与现场实测数据吻合,可用来指导施工.

In order to study the deformation of diaphragm wall of an open excavated deep foundation pit, this paper took the standard section of the deep foundation pit of Jinlong Station of Line 4, Guangzhou Metro, as the subject. With the help of MIDAS/GTS finite element analysis software, this paper found the two dimensional finite element model to conduct comparative studies between calculation result of finite element analysis and site measurement data. The results show that with the increase of excavation depth, the maximum horizontal displacement of diaphragm wall moves downward; erecting support in time can effectively control the deformation of the diaphragm wall. The calculation results of finite element analysis software accord with the field test data, thus providing guidelines for constructions.