| With the rapid development of China’s economy,people’s living standards continue to improve,the urban population continues to grow,the number of travel vehicles increases,leading to increasingly crowded urban traffic,urban roads increasingly deteriorating traffic conditions。In this regard,most cities in China have accelerated the development of urban traffic diversification,and the subway has been gradually taken as an important measure to ease traffic congestion。In the subway station pit excavation engineering construction site is narrow around the larger flow of people in complex environment,foundation pit and surrounding buildings,underground pipelines and other short distance,so the deformation prediction of foundation pit supporting structure analysis in relation to the safety of the foundation pit stability。Taking Hefei subway station Mingguang Road foundation pit supporting structure deformation as the research object,through the measured data and the finite element software MIDA/GTS simulation analysis,to study the effect of horizontal displacement of underground continuous wall in the excavation process of the factors,the main work and conclusions are as follows:(1)This paper summarizes the research results of foundation pit engineering and underground continuous wall at home and abroad,and obtains the deformation characteristics of underground continuous wall as support structure during foundation pit excavation.(2)According to the monitoring plan for the collation and summary of the monitoring data in practical engineering,master the law of deformation of underground continuous wall,the numerical simulation using MIDAS/GTS software modeling,the comparison of measured data and simulation data,the rationality and correctness of the demonstration model.(3)The influencing factors that affect the horizontal displacement of diaphragm wall are analyzed.The simulation results are obtained by changing the thickness of diaphragm wall,the depth of soil infiltration and the stiffness of bearing brace respectively,and the laws that affect the horizontal displacement of diaphragm wall are obtained.Have some reference. |
