土力学中关于土的强度理论的计算分析

摘要

对土体中某一微元体力学模型进行了分析，通过对投影平衡方程的求解，给出了其待求量的解析表达式、应力圆轨迹方程，判断应力圆与强度线之间相切的极值平衡状态，解决了极限平衡条件下的逆向主应力求解和判断技巧的问题。%The paper analyzes one micro-element mechanical model in soil mechanics,analyzes the projection balance equation,shows its analy-sis expression formula,stress circular equation,stress identification circle and strength line and their limit conditions,and solves their adverse stress analysis and identification techniques.