基于土拱理论的地下连续墙护壁泥浆最小重度计算  

Calculation of Minimum Unit Weight of Slurry for Slurry Trench of Diaphragm Wall Based on Soil Arching Theory

作　　者：蔡兵华 李忠超 杨新 孙金山[2] 孙聪 林曜 CAI Binghua;LI Zhongchao;YANG Xin;SUN Jinshan;SUN(Wuhan Municipal Construction Group Co.,Ltd.,Wuhan 2.Faculty of Engineering,China University of Geosciences（Wuhan）Cong2,LIN Yao2 430023,China;,Wuhan 430074,China)

机构地区：[1]武汉市市政建设集团有限公司,湖北武汉430023 [2]中国地质大学(武汉)工程学院,湖北武汉430074

出　　处：《安全与环境工程》2018年第6期167-171,176,共6页Safety and Environmental Engineering

摘　　要：采用泥浆护壁技术进行地下连续墙施工时,泥浆浓度及槽壁稳定性是工程质量和施工安全的关键影响因素。针对目前地下连续墙泥浆槽壁稳定性分析力学模型存在的问题,认为地下连续墙泥浆槽壁破裂面受土拱效应的控制,分析了泥浆槽壁潜在破裂面的几何形态,建立了泥浆槽壁潜在破裂体的三维形态模型,并基于极限平衡原理,提出一种地下连续墙护壁泥浆最小重度的计算方法。算例表明:该方法适用于黏性土和非黏性土,利用该方法计算得到的地下连续墙护壁泥浆最小重度的可靠度较高,便于工程应用。When using slurry supported wall technology to construct diaphragm wall, the unit weight of slurry and the stability of t Aiming at the shortcoming he trench wall are the key f wall at present, this paper holds that the crack surface stab of th affecting the quality and safety of t ility analysis of slurry trench of the e slurry trench of diaphragm wall is and establishes the three dimensional morphological model of the potential sliding object. principle of limit equilibrium,the paper proposes a calculation method of the minimum unit w for slurry trench of diaphragm wall. The example shows that the method can be applied for it is reliable and convenient for engineering application he project. diaphragm controlled ek surface, Based on the eight of slurry clay and nonclay,and it is reliable and convenient {or engineering application.

关 键 词：地下连续墙 泥浆槽壁 土拱效应 泥浆重度 

分 类 号：X93[环境科学与工程—安全科学] TU476.3[建筑科学—结构工程]