考虑位移影响的被动土压力计算方法  

Calculation Method of Passive Soil Pressure Considering Influence of Displacement

作　　者：欧明喜[1,2] 刘新荣[1,2] 钟祖良[1,2] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045

出　　处：《中国公路学报》2011年第5期6-10,共5页China Journal of Highway and Transport

基　　金："十一五"国家科技支撑计划项目(2006BAJ27B05);教育部留学回国人员科研启动基金重点项目(教外司留[2002]247)

摘　　要：基于被动区土体的位移模式假设,采用邓肯-张(Duncan-Chang)提出的双曲线应力-应变关系模型,建立了考虑位移非线性影响的被动土压力计算公式,并将已有模型试验的反演分析得到的计算结果与实测结果进行比较。研究结果表明:提出的公式计算结果与实测结果比较接近,该公式能够反映位移对被动土压力的非线性影响,并且形式简单、易于理解、参数较少、物理意义明确。Based on the supposition for displacement mode of soil in passive region, using the Duncan-Chang model, a passive soil pressure computing formula considering nonlinearity of retaining wall displacement was proposed. Calculated results got by back analysis of model test were compared with measured results. Results show that the calculated results agree well with measured results. The formula in the paper which has advantages of simplification, good intelligibility, a few parameters and specific physical significance can reflect the nonlinear influence of displacement on passive soil pressure.

关 键 词：道路工程 挡土墙 邓肯-张模型 被动土压力 非线性影响 

分 类 号：U417.11[交通运输工程—道路与铁道工程]