Excavated soil body stability analysis method using deformation quantity as instability criterion

An analysis method and stability technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as the inability to meet the calculation convergence conditions, the sudden change of characteristic point displacement, and the lack of research on the stress-strain relationship, etc. Guaranteed safe effect
CN106295017AActive Publication Date: 2017-01-04HOHAI UNIV
3 Cites 14 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HOHAI UNIV
Publication Date
2017-01-04

Smart Images

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

Abstract

The invention discloses an excavated soil body stability analysis method using deformation quantity as an instability criterion. The excavated soil body stability analysis method comprises the following steps that 1, a soil body elastoplastic constitutive model capable of reflecting a stress deformation law of an excavation slope soil body is established, the relation between position displacement deformation amounts of typical characteristic points of an excavation slope and the internal stability of the excavation slope is determined through calculation and analysis of finite elements; 2, the reliability is verified by adopting a traditional limit equilibrium method; 3, normalization processing is conducted on the position displacement deformation amounts of the typical characteristic points of the excavation slope to obtain normalized deformation parameters, and the relation between the normalized deformation parameters and the internal stability of the excavation slope is established; 4, field monitoring of the actual deformation amount of the excavation slope is performed, and the internal stability of the excavation slope is determined and monitored according to the relation. Stress deformation analysis is conducted on the slope by adopting a finite element shear strength reduction method, and the deformation amount of the slope is related with the stability of the slope after being subjected to normalization processing.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a method for analyzing the stability of excavated soil, in particular to a method for analyzing the stability of excavated soil with deformation as the criterion of instability, belonging to the stability of soil slopes in geotechnical engineering, especially excavated slopes Fields of application of stability analysis. Background technique

[0002] The importance of excavating slopes The soil deformation and damage caused by excavation widely exist in water conservancy, civil engineering, transportation, municipal and other engineering constructions, and have been widely concerned by academic and engineering circles. Using the finite element method to analyze the stability of the excavated soil, first of all, it is necessary to develop a soil constitutive model of the excavation stress path under the real stress state; The whole process should be described reasonably; finally, a simple and reliable instability criteri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More