Concave Bend Three-dimensional Slope Stability Analysis Method And Numerical Simulation

Slope stability is one of the three classical subjects in soil mechanics, and slope stability analysis of the safety engineering is a hot research topic in the field of geotechnical engineering at home and abroad. With the development of economic construction and large-scale infrastructure are being conducted in China, it brings out a large number of slope engineering.Traditional method simplifies slopes into the problem of plane strain and doesn't consider the specific terrain, such as the three-dimensional influence that concave corners affect on their stability; there is little research in the law of slope instability, for such results of traditional methods of slope are also uncertain.The present paper did a research in concave curve slope by using Bishop Method and Sweden Arc Method as theoretical foundation. Our study tried to build a three-dimensional slope stability analysis model, considered the influence of the unit of soil lateral earth pressure while in analyzing and derived three-dimensional slope stability safety factor formula. With projects and engineering example, using the ADINA finite element program, established ax symmetric model to simulate data and combined the calculated results with the potential slip line theory, finally obtained the safety factor of slope stability and the potential slip line graph. By changing radius of the concave curve slope, obtained the law of slope stability safety factor with the radius changed and compared to the improved calculation results of safety factor formula, they were both the same conclusion.