Genetic algorithm for searching for most dangerous sliding surface

Abstract

The invention discloses a method for searching for the most dangerous sliding surface of an earth slope based on the Janbu method. The method includes the step of calculation of the non-circular-arc sliding surface. In the step, it is supposed that the tangential force Ti on the sliding surface equals the shearing strength of earth on the sliding surface; the positions of thrust lines on the two sides of each earth stripe are known, and because the influence of the position of a force application point between stripes on the stability security factor of the earth slope is small, it is generally supposed that the tangential force is applied to the 1 / 3 height position of the bottom surface of the earth stripe. According to the method for searching for the most dangerous sliding surface, dip angles of adjacent sliding surface segments can change smoothly, sharp corners will not occur, and the included angle between every two adjacent sliding surface segments is larger than 90 degrees.

Description

Technical field [0001] The invention relates to a genetic algorithm for searching the most dangerous slip surface. Background technique [0002] In geotechnical engineering, slope stability analysis is a very classic and popular research topic that attracts many researchers. It mainly includes slicing method and numerical analysis method. Although numerical analysis methods, including finite difference method, finite element method, discrete element method, Lagrangian method, discontinuous deformation analysis method, manifold element method and several semi-analytical element methods, are applied in this field There has been a lot of progress, but due to the need for more parameters than the classic slicing method, and these parameters are difficult to accurately determine in practice, it is difficult to completely replace the slicing method. The section method is also recommended in the technical code for building slope engineering (GB 50330-2002). The key to slope stability...

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Problems solved by technology

Although numerical analysis methods, including finite difference method, finite element method, discrete element method, Lagrangian method, discontinuous deformation analysis method, manifold element method and several semi-analytical element methods, have been applied in this field There has been great progress, but because more parameters are required than the classical segmentation method, and these parameters are difficult to accurately determine in practice, it is difficult to completely replace the segmentation method