The Stress And Deformation Analysis Of The Underground Continuous Wall And Numerical Simulation Research

Based on foundation pit engineering in Ningbo area, firstly analyzed the change regulation of supporting axial force of the underground continuous wall by measured data, studied the relationship between the maximum horizontal displacement of the wall with the excavation depth of foundation pit, distance of measured points from foundation pit corner, and the depth of maximum horizontal displacement with the excavation depth of foundation pit, then used the theoretical method to deduce the underground continuous wall approximate bending moment calculation formula, studied the regular and bearing capacity degree of different measuring points, moreover used the grey correlation method to analysis the influence degree of the deformation factor, finally, analyzed the loading features and the deformation formula of the underground continuous wall and surrounding soil during the process of excavation by simulating software, compared the horizontal displacement of simulated value and measured value, meanwhile analyzed the influence of the last steel supporting parameters on the horizontal displacement. Through the above research, the following conclusions are drawn:Experimental research shows that the ratio between the maximum horizontal displacement of wall and the excavation depth of foundation pit is 0.99%, and the depth of the maximum deformation is close to the excavation depth; theoretical research shows that the influence degree of excavation depth is the largest, and the bearing capacity utilization ratio of each support axial force and bending moment is lower; simulation research shows that the simulated values are consistent with the measured values, and add support can effectively reduce the horizontal displacement of the wall, meanwhile provided a reference for designing and constructing of engineering in similar project.