Deformation analysis of retaining structure of deep foundation pit in soft soil under over-excavation

Abstract

In the construction of deep foundation pits in soft soil areas, over-excavation of foundation pits and failure to set up support in a timely manner often occur. Due to the creep properties of soft soil, the envelope structure will be sharply deformed and cause engineering accidents. With the secondary development program of the elastic-viscose-plastic constructive model, simulate the conditions of normal construction and over-excavation of foundation pit in Soft clay area, analyze the time change regulation of retaining structures and safety state of foundation pit, in order to achieve effective control of the deformation and protect the buildings adjacent to foundation pit.

Analysis of Foundation Pit Support Selection and Design Problems in Deep Soft Soil Area

“…D. Z. Gao, Y. C. Zhang et al [1][2][3][4] briefly described the engineering characteristics of soft soil and discussed some problems in the support of soft soil foundation pit; Y.K. Geng, W. Lu, L. Y. Zhao et al [4][5][6][7][8][9][10][11][12][13][14] analyzed the mechanism of large deformation of foundation pit in deep soft soil area and studied the influencing factors and control measures of deformation according to the characteristics of "space-time effect" of foundation pit engineering in soft soil area; X. C. Wu, Y. Q. Xu, et al [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] studied the design and construction of deep foundation pit support in deep soft soil and analyzed the reinforcement effect of passive zone and the stability of foundation pit.…”