不同竖向位移模式下土拱效应及土压力分布规律研究  

Study on soil arch effect and soil pressuredistribution law under different vertical displacement modes

作　　者：刘建永 Liu Jianyong(Shandong Hengnuo Construction Engineering Consulting Co.,Ltd.,Jinan Shandong 250109,China)

机构地区：[1]山东恒诺建设工程咨询有限公司,山东济南250109

出　　处：《山西建筑》2025年第9期88-91,共4页Shanxi Architecture

基　　金：山东省自然科学基金:高摩阻废旧轮胎格栅加筋边坡承载特性研究(项目编号:ZR2024ME078)。

摘　　要：为研究结构体与土体产生不协调变形时土体内部变化及土压力分布规律,设计了室内试验,探究不同位移产生宽度、位移产生模式以及位移量大小等因素对土压力分布方式的影响,并通过拟合得出不同位移产生宽度条件下土压力峰值与土压力影响范围的计算公式。结果表明:土体底部产生位移增量过程中,位移先缓慢增加后呈线性变化趋势;随主动位移施加的范围宽度增大,土体侧面的土压力增加且土体底部土压力减小;随被动位移施加的范围宽度越大,土体侧面的土压力减小且土体底部土压力增加。In order to study the internal changes of the soil body and the distribution of soil pressure when the structure and the soil body produce uncoordinated deformation,an indoor test was designed to investigate the effects of different displacement width,displacement mode and displacement size on the distribution of soil pressure,and the calculation formula of the peak soil pressure and the range of influence of soil pressure under the conditions of different displacement width were derived from the fitting.displacement increment process,the displacement first increases slowly and then shows a linear trend;with the increase of the range width applied by the active displacement,the earth pressure on the side of the soil body increases and the earth pressure at the bottom of the soil body decreases,the earth pressure on the side of the soil body increases and the earth pressure at the bottom of the soil body decreases;with the larger width of the range applied by the passive displacement,the earth pressure on the side of the soil body decreases and the earth pressure at the bottom of the soil body increases,the earth pressure on the side of the soil body decreases and the earth pressure at the bottom of the soil body bottom earth pressure increases.

关 键 词：土压力 主动位移 被动位移 土拱效应 

分 类 号：TU411.3[建筑科学—岩土工程]