Simple calculation method for radial maximum displacement of diaphragm wall in excavation stage

Abstract

The invention belongs to the technical field of calculating the radial displacement of a diaphragm wall in an excavation stage and relates to a simple calculation method for the radial maximum displacement of a diaphragm wall in an excavation stage. The method comprises the following steps that: S1, a finite element model in a diaphragm wall excavation stage is established, wherein the finite element model comprises a diaphragm wall, a bottom plate, a lining and a filling core, the diaphragm wall is a semicircular cylinder, a bottom plate is arranged at the bottom of the finite element model,the lining is tightly attached to the inner side of the diaphragm wall, and the finite element model is filled with the filling core; S2, the diaphragm wall is simplified into cylindrical curved surfaces, one cylindrical curved surface is selected from the diaphragm wall, and a curved surface coordinate system is established on the cylindrical curved surface; and S3, the calculation formula of theradial maximum displacement of the diaphragm wall is solved. With the method of the invention adopted, the maximum radial deformation of the diaphragm wall under different excavation depths is obtained. The method has the advantages of easiness and convenience in calculation, high precision and the like, and can completely meet construction monitoring requirements.

Description

【Technical Field】 [0001] The invention relates to the technical field of calculating the radial displacement of a connecting wall in an excavation stage, in particular to a simple calculation method for the maximum radial displacement of a connecting wall in an excavation stage. 【Background technique】 [0002] As a retaining and anti-seepage structure in the excavation stage, the ground connecting wall is of great significance to the safety and smooth progress of the excavation construction. Therefore, the maximum radial displacement of the ground connecting wall is a very important parameter, no matter in the design stage or the construction stage of the ground connecting wall, and it is an important index for evaluating the safety of the ground connecting wall. However, it is currently difficult to obtain the radial displacement of the ground connecting wall at different excavation depths. The common method is to establish a finite element solid model of the ground connecting w...

AI Technical Summary

Problems solved by technology

However, at present, it is difficult to obtain the radial displacement of the ground connection wall at different excavation depths. The common method is to establish a finite element solid model of the ground connection wall and the surrounding soil. The model often needs to consider nonlinear problems such as contact. Technical personnel have high requirements for theoretical calculation skills, which is not conducive to project promotion

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