Method for computing pressure of soil mass behind retaining wall

Abstract

The invention discloses a method for computing pressure of a soil mass behind a retaining wall. The accurate basis can be improved for the design of the retaining wall or other retaining structures. The method comprises the following steps of: 1, determining a calculating range of the soil mass; 2, dividing a unit and a node; 3, allocating a node stress vector; 4, establishing a unit equation-of-static-equilibrium restriction S1; 5, establishing a node yield criterion restriction S2; 6, establishing a node static boundary condition restriction S3; 7, establishing an objective function T of the pressure of the soil mass behind the retaining wall; and 8, determining a minimum or maximum pressure of the soil mass behind the retaining wall. The method has the advantages that factors such as physico-mechanical properties of the soil mass behind the retaining wall, soil mass range, soil mass boundary conditions, working states of the retaining wall, and the like can be uniformly considered, calculation of soil masses behind different shapes of retaining walls is adapted, the calculating result is accurate, and the accurate basis can be provided for the design of the retaining wall.

Description

technical field [0001] The invention relates to a retaining wall built in geotechnical engineering, in particular to a method for calculating soil pressure behind the retaining wall. Background technique [0002] In geotechnical engineering activities, it is often necessary to build various forms of retaining walls. The pressure of the soil behind the retaining wall is one of the core factors affecting the safety of the retaining wall. Therefore, the accurate calculation of the soil behind the retaining wall The magnitude of the pressure is also the theoretical basis for retaining wall design. Since the soil pressure behind the retaining wall is affected by various factors such as the physical and mechanical properties of the soil, the scope of the soil, boundary conditions and the working state of the retaining wall, empirical formulas are often used in calculations at present, and various assumptions are introduced to obtain the minimum or maximum soil pressure. Sinc...

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Problems solved by technology

Since none of these empirical formulas can fully consider various influencing factors of soil pressure, it is a requirement in the design of retaining walls to provide a unified calculation method for soil pressure behind retaining walls that can fully consider various influencing factors. solved problem

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