2006, Volume 8, Issue 12
Strategic Study of CAE >> 2006, Volume 8, Issue 12
The Method and Formula for Stability Factor of Slope with State of Soil Original Stress
Hefei University of Technology, Hefei 230009, China
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Abstract
The methods for analysis of stability of slope are usually considered, developed and improved along the line of finite slice method. But the safety factor of stability is facing challenge in engineering application. Because of the state of original stress in soil is ignored and disfigurement of finite slice method is in existence at all time. In different conditions of soil consolidation, K0, the lateral stress coefficient of soil state, has influenced the property of soil and excavation of slope. In this paper, in consideration of the state of soil original stress, the calculating formula for safety factor have been given with applying Coulomb's equation for shear strength of soil and Mohr - Coulomb rule. There are many examples of safety factor using the formula of this paper, which have been calculated and compared with finite slice methods selected from reference literatures. The formula have showed their clear concept, simple calculation and dependable result. They can be used in engineering.
Keywords
ateral stress coefficient K0 ; state of original stress ; formula of safety factor of stability
Figures
图1土体的自重应力状态和抗剪强度
图2 坡面沿深度应力状态的变化和抗剪强度的发挥
图3 不同开挖形式的边坡描述与简化
图4文献5 边坡轮廓坐标图
图5ACADS 考核题EX1❶边坡轮廓图
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