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Slide face boundary method for calculating slope stability

A stability and slip surface technology, which is applied in the field of slope engineering stability evaluation and prevention, and can solve the problems of uncertainty of calculation results and non-convergence of calculation.

Active Publication Date: 2014-04-16
HUBEI UNIV OF TECH
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Problems solved by technology

Any of these four factors will cause the calculation to not converge
However, the related problems are not solved in the prior art, and the calculation results are uncertain.

Method used

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  • Slide face boundary method for calculating slope stability
  • Slide face boundary method for calculating slope stability
  • Slide face boundary method for calculating slope stability

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Embodiment Construction

[0053] Below in conjunction with accompanying drawing, the present invention is further described: as Figure 2-4 As shown, a sliding surface boundary method for slope stability calculation;

[0054] First, it is proposed that the slope stability analysis can only take the sliding body as the calculation object, the force and displacement on the potential sliding surface are treated with boundary conditions, and the sliding surface is treated with beam elements (or other elements). The basic assumption is: the beam element There is no deformation along the transverse direction or the deformation follows different constitutive relations, the slope body can adopt various current units, see figure 2 .

[0055] The second is to propose a detailed calculation method for slope stability analysis. The specific calculation steps are as follows:

[0056] The slope is selected as the finite element calculation object, and the calculation method of the slope surface boundary condition...

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Abstract

The invention discloses a slide face boundary method for calculating the slope stability. In the slide face boundary method, only a slider is taken as a calculated object for slope stability analysis. The invention further discloses a comprehensive glide force-antislide force stability coefficient calculation method and a main glide force method based on the slide face boundary method. The method disclosed by the invention has the advantages that the non-convergence problem of an existing slope stability calculation method is solved, the slope step-by-step stability failure analysis, realizes easy calculation can be implemented, the calculation results with a conventional limited equilibrium slice method can be compared, and new stability coefficients have different physical significances, so that the current slope monitoring results can be applied to the slope stability evaluation.

Description

technical field [0001] The invention relates to the technical field of slope engineering stability evaluation and prevention, in particular to a sliding surface boundary method for slope stability calculation. Background technique [0002] Currently, the slope stability analysis mainly adopts the limit equilibrium strip method and the finite element strength reduction method. The traditional limit equilibrium slice method takes critical state parameters for the physical and mechanical parameters of a given sliding surface, and assumes that the sliding surface is in a critical stress state at the same time. In order to make the problem statically indeterminate and solvable, all kinds of limit equilibrium slice methods Different assumptions are made on the action point of the normal force on the bottom edge of the bar and the direction or line of action of the thrust between the bars, so that the rigor of the stability analysis method is damaged, and the critical friction resi...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 卢应发石峻峰刘德富
Owner HUBEI UNIV OF TECH
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