论文部分内容阅读
现在,大多数地铁车站深基坑施工都将地下连续墙作为支撑围护结构,在开挖深基坑时,地下连续墙会发生变形,它的变形规律与程度会对整个施工的安全有直接影响。所以说我们要对地下连续墙施工变形进行详细探究,在这个背景下,本文以哈尔滨轨道交通2号线进行举例,通过地下连续墙在各个深度监测点的变化规律,以及基坑周围荷载的影响对深基坑地下连续墙施工变形检测结果进行研究,结果显示,连续墙的位移随着挖掘深度而增加,在开始挖掘时变化率是最大的,基坑中部附近的位置显示会出现最大变形。而未支撑部分暴露时间和土方开始的挖掘量以及基坑周围的荷载大小对地下连续墙的变形有很大影响,希望本文能为工程施工提供借鉴。
Nowadays, most of the subway station deep foundation pit construction will use the diaphragm wall as the supporting retaining structure. When the deep foundation pit is excavated, the diaphragm wall will deform, and its deformation law and degree will have direct effect on the safety of the whole construction influences. Therefore, we should study the deformation of the diaphragm wall in detail. Under this background, this paper takes Harbin Rail Transit Line 2 as an example. Through the variation rules of the diaphragm wall at various depth monitoring points and the influence of the load around the foundation pit The results of the deformation detection of the diaphragm wall of deep foundation pit show that the displacement of the diaphragm wall increases with the excavation depth and the change rate is the largest at the beginning of excavation. The maximum deformation will appear near the center of the excavation. The unsupported partial exposure time and the amount of earth excavation and the load around the foundation pit have a great impact on the deformation of the diaphragm wall. I hope this article can provide reference for the construction.