桩锚支护基坑工程变形特性研究

Influence of deep foundation pit excavation on supporting structure

本文根据吉林省人民医院实际的工程地质条件进行建模分析,通过使用Midas GTS有限元模拟软件对深基坑工程进行模拟,更加深入地了解基坑的变形与开挖过程之间的关系.将模拟软件的模拟值和施工现场基坑变形的实际监测资料进行对比,可得到以下结论:基坑在开挖完成之后,模拟软件中基坑底部隆起最大位置与监测数据所呈现的位置基本吻合;监测数据与模拟数据皆沿着四周呈逐渐减小的变化规律.这说明了模拟软件的准确性,可以为以后有相似土质条件的基坑支护工程提供借鉴.

In recent years,more and more deep foundation pit projects are also constantly developing,and deep foundation pit projects are precisely because of the development of underground space.According to the actual engineering geological conditions of Jilin Provincial People's Hospital,this paper uses Midas GTS finite element simulation software to simulate the deep foundation pit project,and has a deeper understanding of the relationship between the deformation of the foundation pit and the excavation process.By comparing the simulation value of the simulation software with the actual monitoring data of the deformation of the foundation pit at the construction site,the following conclusions can be obtained:after the excavation of the foundation pit,the maximum position of the bottom uplift of the foundation pit in the simulation software is basically consistent with the position presented by the monitoring data.Moreover,the monitoring data and simulation data are gradually decreasing along the surrounding area.This shows the accuracy of the simulation software,which can provide experience for future foundation pit support projects with similar soil conditions.