考虑墙背含倾斜地层支挡结构主动土压力上限分析  

Analysis on the upper bound of active earth pressure considering the support and retaining structures with inclined strata on the back of wall

作　　者：张超[1] 张京伍 李明东 李衍翔 易进翔 ZHANG Chao;ZHANG Jingwu;LI Mingdong;LI Yanxiang;YI Jinxiang(School of Civil and Architectural Engineering,East China University of Technology,Nanchang 330013,China;Engineering Research Center for Geological Environment and Underground Space of Jiangxi Province,Nanchang 330013,China;Jiangxi Space Geo-engineering Group Co.,Ltd.,Nanchang 330001,China)

机构地区：[1]东华理工大学土木与建筑工程学院,南昌330013 [2]江西省地质环境与地下空间工程研究中心,南昌330013 [3]江西空间地信工程集团有限公司,南昌330001

出　　处：《吉林建筑大学学报》2025年第1期17-25,共9页Journal of Jilin Jianzhu University

基　　金：国家自然科学基金资助项目(12262001);江西省地质环境与地下空间工程研究中心开放基金(JXDHJJ2022-001)。

摘　　要：刚性挡土墙是岩土工程中常用的一种支挡结构,其设计的关键在于墙后土压力计算的合理性。针对墙背含倾斜地层支挡结构的主动土压力问题,基于极限分析上限理论,构建了墙背含倾斜地层破坏机制,建立了支挡结构主动土压力系数计算公式和理论方法,将计算结果与Coulomb土压力计算值及已有文献结果进行对比,验证所提研究方法的合理性,并进一步探究了地层界面倾角不同时,上下层填土内摩擦角、合力作用点系数、层高比系数、挡墙高度对墙背含倾斜地层支挡结构主动土压力系数的影响规律。Rigid retaining wall is a standard support structure in geotechnical engineering.The effectiveness of their design hinges on accurately calculating the soil pressure exerted against the wall.To address the issue of active earth pressure on retaining structures with an inclined stratum behind the wall,we developed a theoretical approach based on the upper bound theory of limit analysis.This approach constructs the damage mechanism of the inclined stratum and establishes a formula for calculating the active earth pressure coefficient.We compared our results with Coulomb's earth pressure calculations and the results of exisling literature to validate our method.Additionally,we explored how different inclination angles at the soil interface affect the results.Furthermore,the study examines how the angle of internal friction of the fill,the joint force coefficient,the layer height ratio,and the height of the retaining wall impact the active earth pressure coefficient.This analysis is conducted for retaining structures with an inclined stratum at the back,considering varying inclinations of the stratum interface.

关 键 词：主动土压力 倾斜地层 刚性挡土墙 上限解 

分 类 号：TU432[建筑科学—岩土工程]