基于填土稳定安全系数法挡墙主动土压力的计算  

Calculation of Active Earth Pressure of Retaining Wall Based on Safety Factor of Filling Stability

作　　者：罗华胤 LUO Hua-yin(China Railway 21st Bureau Group Sixth Engineering Co.,Ltd.,Tianjin 300450,China)

机构地区：[1]中铁二十一局集团第六工程有限公司,天津300450

出　　处：《价值工程》2025年第10期7-10,共4页Value Engineering

摘　　要：为保证工程安全,挡土墙在设计中往往会考虑一定的安全系数,现有理论无法考虑安全系数对土压力的影响。基于此,本文基于挡土墙的安全系数,通过抗剪强度相等原则对内摩擦角进行等效换算,将粘性土等效成砂土,推导了主动土压力的计算公式,并将此理论解与理正岩土软件得到的结果进行对比分析,两者差距不大,验证了公式的合理性。In order to ensure engineering safety,a certain safety factor is often considered in the design of retaining wall,and the existing theory cannot consider the influence of safety factor on earth pressure.Based on this,based on the safety factor of the retaining wall,this paper makes equivalent conversion of the internal friction Angle through the principle of equal shear strength,equivalent conversion of viscous soil into sandy soil,deduces the calculation formula of active earth pressure,and compares the theoretical solution with the results obtained by the normal rock and soil software,which shows that there is not much difference between the two,verifying the rationality of the formula.

关 键 词：挡土墙 主动土压力 安全系数 抗剪强度 

分 类 号：U417.11[交通运输工程—道路与铁道工程]