复杂山地建筑边坡抗滑桩加固技术应用研究  

Application research of anti-slide pile reinforcement technology for complex mountain building slope

作　　者：梁志荣 刘静德 李伟 魏祥 陈新喜[2] 李赟[2] 余少乐 LIANG Zhirong;LIU Jingde;LI Wei;WEI Xiang;CHEN Xinxi;LI Yun;YU Shaole(Shanghai Shen Yuan Geotechnical Engineering Co.,Ltd.,Shanghai 200011,China;China Construction Eighth Engineering Division Co.,Ltd.,Shanghai 200135,China)

机构地区：[1]上海申元岩土工程有限公司,上海200011 [2]中国建筑第八工程局有限公司,上海200135

出　　处：《建筑结构》2021年第23期42-47,33,共7页Building Structure

基　　金：上海市青年科技启明星计划资助(20QB1400600);上海市优秀技术带头人资助计划项目(14XD1420400);华建集团科研计划项目(18-1类-0081-地)。

摘　　要：结合南京某复杂山地建筑边坡加固治理工程,阐述山地建筑边坡多排抗滑桩加固设计方法。首先采用极限平衡法分析确定山地建筑边坡潜在滑动模式及潜在滑面分布形式,并通过反分析确定滑带土力学参数。然后采用滑坡推力法、有限元数值模拟综合确定多排抗滑桩受力特性,为编制山地建筑边坡加固治理方案提供依据,最后采用有限元强度折减法、极限平衡法复核加固后边坡稳定性,确保治理方案安全合理。工程实践表明,采用多排抗滑桩对山地建筑边坡不同滑坡模式的潜在滑坡均有较好的防治效果,适用于潜在滑动模式复杂、潜在滑面影响范围广且滑面较深的边坡加固治理。Combined with a slope reinforcement and treatment project of a complex mountain building in Nanjing,the reinforcement design method of multi-row anti-slide piles for slope of mountain building was described.Firstly,limit equilibrium method was used to analyze and determine the potential sliding mode and distribution form of potential sliding surface of mountain building slope,and the mechanical parameters of sliding zone soil were determined by back analysis.Then,the landslide thrust method and finite element numerical simulation were used to comprehensively determine the mechanical characteristics of multi-row anti-slide piles,which provided the basis for the preparation of slope reinforcement and treatment plan of mountain buildings.Finally,the finite element strength reduction method and limit equilibrium method were used to check the stability of the slope after reinforcement to ensure the safety and rationality of treatment plan.The engineering practice shows that the use of multi-row anti-slide piles has good prevention and control effect on the potential landslide of different landslide modes of mountain building slope,and it is suitable for the reinforcement and treatment of slopes with complex potential sliding modes,wide influence range of potential sliding surface and deep sliding surface.

关 键 词：山地建筑 边坡加固 抗滑桩 强度折减法 极限平衡法 

分 类 号：TU473.1[建筑科学—结构工程]