The Surface Settlement Behind Retain Wall Estimate Research Of Soft Soil Foundation Pit

It is a very valuable research lesson in soft soil foundation pit transform. This paper synopsis introduced the characteristics and research development situation of soft soil foundation pit engineering, and transform mechanism.The Mohr-Coulomb elastic-plastic stress-strain relation model, element types and the basic theory for simulating the foundation pit excavation with the finite element method is analyzed in this paper. A series of soft soil foundation pit engineer samples are analyzed by Marc computer program of finite element method, according to calculation results and people of the past studying results getting a series of characteristics of surface settlement behind retain wall, and base on these characteristics a typical distribution curve of surface settlement behind the retain wall is gave. According to the way of thinking of Geologic Strata Lose, a formula is deduced to estimate the surface settlement behind retain wall by the lateral wall deflection. Finally, the formula and the typical distribution curve of surface settlement are verified by comparing the estimating values and the measure values.