平移模式下倾斜刚性挡墙支护试验研究  

Research on the Test of Inclined Rigid Retaining Wall Support in Translational Mode

作　　者：尹瑞 陈钻 彭楚才 YIN Rui;CHEN Zuan;PENG Chucai(School of Civil Engineering and Architecture,Hunan Institute of Science and Technology;Hunan Instituto of Science and Technology Nahu College,Yueyang,Hunan Province,414006 China)

机构地区：[1]湖南理工学院土木建筑工程学院 [2]湖南理工学院南湖学院,湖南岳阳414006

出　　处：《大众科学》2024年第7期76-78,共3页China Public Science

基　　金：湖南省大学生创新创业训练计划项目“倾斜刚性挡墙土压力分析及其支护性能研究”(湘教通〔2023〕237号);湖南省普通高等学校教学改革研究项目“面向新工科应用型人才培养的《材料力学》‘教-赛-研’三位一体教学模式改革与实践”(项目编号:HNJG-2022-0906)。

摘　　要：为探究倾斜刚性挡土墙的支护能力及被动土压力变化规律,利用自制模型设备开展了室内模型试验.研究结果表明:倾斜一定角度的刚性挡土墙后被动区土体随着移动挡墙的加载位移产生一条近似直线的被动滑裂面和一条曲线主动滑裂面;随着倾斜角的增大,两条滑裂面交点逐渐下移.当移动挡墙加载相对位移6%~8%时,倾斜刚性挡土墙后土体破坏达到极限状态,此时滑裂面正好相交.倾斜刚性挡土墙上的土压力随着位移的加载,上部无明显变化,下部呈现先增大后减少至平稳的趋势.In order to investigate the supporting capacity of inclined rigid retaining wall and the change rule of passive soil pressure,an indoor model test was carried out using homemade model equipment.The results show that:tilting a certain angle of rigid retaining wall after the passive area of the soil body with the loading displacement of the mobile retaining wall produces an approximate straight line of passive slip crack surface and a curve of active slip crack surface;with the increase of the angle of inclination,the intersection of the two slip crack surfaces gradually moved down.When the relative displacement of mobile retaining wall loading is 6%~8%,the soil damage behind the inclined rigid retaining wall reaches the limit state,and at this time,the slip fracture surfaces just intersect.The soil pressure on the inclined rigid retaining wall has no obvious change in the upper part with the loading of displacement,and the lower part shows the trend of increasing first and then decreasing to smooth.

关 键 词：模型试验 倾斜挡土墙 被动土压力 土体滑裂面 

分 类 号：TU432[建筑科学—岩土工程]