土钉支护的能量法稳定分析  

Stability analysis of soil nailing structures using energy method

作　　者：潘龙[1] 王建国[1] 

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2011年第5期734-738,共5页Journal of Hefei University of Technology：Natural Science

基　　金：土木工程防灾减灾安徽省工程技术研究中心资助项目(2007368)

摘　　要：基于塑性极限分析的上限定理,文章通过建立能量方程的方法,研究了线性Mohr-Coulomb破坏准则下的加筋土体的边坡稳定性问题。从加筋土体的破坏机理出发,分析了土钉支护结构失稳的成因和破坏形式,并以Mohr-Coulomb破坏准则为依据,对对数螺旋线破坏面内侧的土体进行能量分析,从而求得边坡稳定的安全系数,建立边坡稳定的能量法判据,并给出理论说明,同时与传统的极限平衡法进行比较,说明能量法判据的适用性。Based on the upper bound theorem of the plastic limit analysis,and by using the method of energy equation,the slope stability analysis is carried out for the soil nailing structure that follows the linear Mohr-Coulomb failure criteria.In view of the failure criteria of reinforced soil,the reasons and forms of the instability of the soil nailing structure are discussed.According to the Mohr-Coulomb failure criteria,the safety factor of the soil nailed structure and corresponding judgement rule of slope stability based on the energy method are obtained by analyzing the energy of the soil on the inner side of the logarithmic spiral failure surface.It is proved that the energy method is applicable by the comparison with the traditional limit equilibrium methods.

关 键 词：土钉支护 边坡稳定 对数螺旋 能量法 

分 类 号：TU413.62[建筑科学—岩土工程]