A Method for Accurately Calculating the Weight of Soil Strips in the Slice Method of Slope Stability Analysis
A technology of stability analysis and slice method, which is applied in the field of foundation soil survey, construction, infrastructure engineering, etc., can solve problems such as irregular soil boundary lines, and achieve the effect of stable calculation value of safety factor and accurate calculation results
Active Publication Date: 2019-08-20
SICHUAN UNIV
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[0004] In order to overcome the deficiencies of the existing centerline method technology, the purpose of the present invention is to provide a method for accurately calculating the weight of soil strips in the strip method for soil slope stability analysis. In the case of complex structures, it can meet the accuracy requirements of slope stability analysis
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[0035] Embodiment: the inventive method calculates figure 1 The weight of the middle shaded soil bar
[0036] A method for accurately calculating the weight of soil strips in the strip method for soil slope stability analysis, comprising the following steps:
[0037] (1) take out figure 1 The shaded soil strips in the figure 2 shown. right figure 2 The four vertices of the middle soil strip, the two inflection points 5 and 6 of the soil boundary line SI1, the two inflection points 7 and 8 of the soil boundary line SI2, the two inflection points of the soil boundary line SI1 and the left and right sides of the soil strip A total of 12 points are numbered, that is, point 1 to point 12.
[0038] (2) The pair of vertical lines passing through the inflection points of the soil boundary lines SI1 and SI2 (namely, point 5 to point 8) figure 2 The soil strips in are partitioned, such as image 3 shown. Number the intersection points of each vertical line with the upper and ...
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A method for accurately calculating the weight of soil strips in the slicing method for soil slope stability analysis, comprising the following steps: Step 1: Preliminarily partitioning the soil strips by using vertical lines passing through the inflection points or intersection points of the soil layer boundary lines to form the soil strip areas block; step 2: further divide each soil strip block initially divided into step 1 into several quadrilateral or triangular blocks, and record the vertex coordinates of the block; step 3: calculate the weight W' of each soil strip block j : First calculate the weight of the quadrilateral or triangular block Get the weight W' of the jth soil bar block j , and finally calculate the weight W of the entire soil strip. The present invention divides the soil strip into several quadrangular or triangular blocks according to the boundary line of the soil strip and the inflection point or intersection point of the boundary line. By adopting this subdivision method, the weight of the soil strip can be calculated more accurately, avoiding the traditional center line method which only uses If the information of the intersection of the center line of the soil strip and the boundary line of the soil layer is calculated, a large error may occur.
Description
technical field [0001] The invention belongs to the field of geotechnical engineering, and in particular relates to a method for accurately calculating the weight of soil strips in the strip method for soil slope stability analysis. Background technique [0002] The slice method of rigid body limit equilibrium (hereinafter referred to as the slice method) is a basic method for soil slope stability analysis, and it is also a method stipulated in the current domestic water conservancy, construction, highway and other engineering design codes. The slice method has the advantages of simple principle and easy calculation. The basic principle of the slice method is to divide the sliding soil into several vertical soil strips, without considering the deformation of the soil strips, and solve the sliding stability of the slope by establishing the balance equation of the force and (or) moment acting on the soil strips. Safety factor. When using the slice method to calculate the saf...
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IPC IPC(8): E02D1/02
Inventor 吴震宇陈建康李艳玲裴亮张瀚
Owner SICHUAN UNIV