Three-dimensional slope safety factor solving method based on lower bound limit analysis

A safety factor and slope technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of heavy workload, high degree of freedom, low calculation efficiency, etc., to reduce nonlinearity and simplify unknown quantities Quantity effect

CN110083883AActive Publication Date: 2019-08-02CHINA INST OF WATER RESOURCES & HYDROPOWER RES
4 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-08-02

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a three-dimensional slope safety factor solving method based on lower bound limit analysis. According to the method, the magnitude, direction and action point of block body interface acting force serve as main variables, static balance (meeting force and torque balance at the same time) and yield criteria required by the lower bound limit analysis for permitting a static field serve as constraint conditions, and the slope stability analysis problem is converted into a nonlinear optimization problem for solving the maximum safety coefficient value; meanwhile, the accuracy and reliability of the calculation result of the method disclosed by the invention are verified through a representative example, and satisfactory results are obtained. The invention provides a newmeans for the three-dimensional stability analysis of the actual slope engineering.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a geotechnical engineering side slope stability evaluation method, in particular, the invention relates to a method for solving a three-dimensional side slope safety factor according to the limit analysis lower limit theorem. The invention belongs to the field of limit analysis of slope stability in geotechnical engineering. Background technique

[0002] At present, in the field of slope stability analysis, due to the lack of mature and effective three-dimensional analysis methods, slope stability analysis is usually considered as a plane problem, and the spatial effect of actual engineering is ignored. This approach is acceptable in most cases, but for some slopes with huge scale and significant spatial effects, it is obviously inappropriate to use the two-dimensional analysis method.

[0003] Many scholars at home and abroad have tried to apply the idea of ​​two-dimensional limit equilibrium method of slopes to three-dimensi...

Examples

Embodiment Construction

[0021] Further illustrate the present invention below in conjunction with accompanying drawing and embodiment, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0022] At present, in the field of slope stability analysis, due to the lack of mature and effective three-dimensional analysis methods, slope stability analysis is usually considered as a plane problem, and the spatial effect of actual engineering is ignored. Some scholars have also tried to apply the idea of ​​the slope two-dimensional limit equilibrium method to the three-dimensional slope stability analysis. By introducing various assumptions, the complex three-dimensional problems be...