带坑内加固的重力式水泥土墙的稳定性计算分析  

Analysis of the Stability Calculation of Gravity Cement-Soil Wall with Backfill Reinforcement in the Pit

作　　者：陈富强[1,2] 杨光华 廖汉阳[3] CHEN Fuqiang;YANG Guanghua;LIAO Hanyang(Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510635,China;The Geotechnical Engineering Technology Center of Guangdong Province,Guangzhou 510635,China;School of Civil Engineering&Transportation,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]广东省水利水电科学研究院,广州510635 [2]广东省岩土工程技术研究中心,广州510635 [3]华南理工大学土木与交通学院,广州510640

出　　处：《广东水利水电》2025年第4期15-20,共6页Guangdong Water Resources and Hydropower

基　　金：国家自然科学基金项目(编号:52078143)。

摘　　要：该文围绕带坑内加固的重力式水泥土墙的稳定性计算开展了探讨,首先通过算例分析了不同墙宽和嵌固深度的各种情况下的整体稳定性、抗滑稳定性和抗倾覆稳定性的变化规律,变化规律表明:①整体稳定安全系数对墙宽的敏感性不太大;②当嵌固深度超过某一深度时,对同一嵌固深度而言,增加水泥土墙的宽度,对抗滑和抗倾覆稳定安全系数的增大幅度不大。基于此规律,提出了带坑内加固的重力式水泥土墙的稳定性计算可以分两步进行计算的简化方法:①重力式水泥土墙(不考虑水泥土墙在坑内加固下部分长度,即取与坑内加固同样的深度)与坑内加固作为一个整体来计算结构的抗倾覆稳定和抗滑稳定性;②只考虑重力式水泥土墙来计算整体稳定和抗隆起稳定性。最后通过工程实例,验证了该简化的可行性和可靠性,研究成果可为相关研究提供借鉴。This paper discusses the stability calculation of gravity cement-soil wall with backfill reinforcement.The variation patterns of overall stability,anti sliding stability,and anti overturning stability under different wall widths and embedded depths were analyzed through examples.The variation patterns indicate that:the sensitivity of the overall stability safety factor to wall width is not very high;when the embedded depth exceeds a certain depth,increasing the width of the cement soil wall does not significantly increase the safety factors for anti sliding and anti overturning stability for the same embedded depth.Based on this law,a simplified method for calculating the stability of gravity cement soil walls with pit reinforcement is proposed,which can be divided into two steps.Firstly,the gravity cement soil wall(without considering the length of the cement soil wall under pit reinforcement,i.e.taking the same depth as the pit reinforcement)and the pit reinforcement are used as a whole to calculate the anti overturning stability and anti sliding stability of the structure.Secondly,only the gravity cement soil wall is considered to calculate the overall stability and anti uplift stability.Finally,the feasibility and reliability of this simplification are verified through engineering example.

关 键 词：基坑工程 重力式水泥土墙 坑内加固 稳定性 工程方法 

分 类 号：TU472[建筑科学—结构工程]