时代帝景基坑支护结构稳定性及位移分析

发布时间：2018-01-08 00:15

本文关键词：时代帝景基坑支护结构稳定性及位移分析　出处：《辽宁工程技术大学》2013年硕士论文　论文类型：学位论文

【摘要】：本文通过对北京时代帝景深基坑工程的工程地质资料、锚索轴力检测数据、相关位移检测数据以及施工开挖支护进度资料等的分析处理,并且采用数值模拟方法,对深基坑的桩锚支护结构体系的受力和变形特性进行了研究。研究取得了以下主要结果和结论： (1)支护桩的最大水平位移发生在基坑坑壁的中下部,基坑内部土体的水平位移量沿远离基坑支护结构的方向逐渐减小。基坑在水平方向发生的整体侧移是向坑内的位移,整体水平侧移运动趋势呈圆弧滑动。 (2)通过对基坑的数值模拟分析,得到了桩锚结构内力与岩土体位移随开挖支护的响应变化,从变化云图和相应节点值的提取曲线上来看,发展态势与实测情况基本相符。在弯矩的模拟值的变化来看,与实际测得的弯矩值相差不大,对工程实际施工中,具有现实的指导意义。
[Abstract]:In this paper, the engineering geological data, the testing data of anchor cable axial force, the relative displacement detection data and the construction and excavation support progress data of the deep foundation pit of the times of Beijing times are analyzed and processed. The mechanical and deformation characteristics of the pile-anchor supporting structure system of deep foundation pit are studied by numerical simulation method. The main results and conclusions are as follows: 1) the maximum horizontal displacement of the supporting pile occurs in the middle and lower part of the pit wall. The horizontal displacement of soil in the foundation pit decreases gradually along the direction far away from the supporting structure of the foundation pit. The overall lateral displacement of the foundation pit in the horizontal direction is the displacement in the pit and the movement trend of the whole horizontal lateral movement is circular sliding. 2) through the numerical simulation analysis of foundation pit, the responses of the internal force of pile and anchor structure and the displacement of rock and soil with the excavation support are obtained, which can be seen from the changing cloud map and the extraction curve of the corresponding node value. The development trend is basically consistent with the measured results, and the variation of the simulated moment values is not different from the actual measured moment values, which is of practical significance to the practical construction of the project.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU470

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