【摘要】 基于太沙基假定的地基滑动面 ,分析了地基土单元的平面应变应力状态 ,并引入SMP三维强度准则和变换应力空间 ,将变换应力空间内等平均主应力条件下的强度包线半径与偏应力半径平均值的比值定义为广义强度安全系数。通过工程实例 ,解释了地基承载力安全系数和广义强度安全系数的相互关系。更多还原

【Abstract】 Based on glide surface presumed by Terzaghi,plane strain-stress state of ground soil cell is analyzed and SMP criterion and transformed stress space are also introduced.According to the above,the ratio of semidiameter of strength envelope to average semidiameter of deviator stress in the transformed stress space with the equal mean stress is defined as the generalized strength safety factor.The relationship between foundation bearing capacity safety factor and that of generalized strength safety is also explained by geotechnical engineering practice.更多还原