土工格栅加筋土挡墙现场试验分析  

Field test analysis of block geogrid-reinforced earth retaining wall

作　　者：赵振华[1] 薛晓辉[2] 周亦涛[3] 郭亚宇[2] 

机构地区：[1]贵州师范大学材料与建筑工程学院,贵州贵阳550014 [2]陕西铁路工程职业技术学院建筑工程系,陕西渭南714000 [3]河北工程技术高等专科学校,河北沧州061001

出　　处：《四川建筑科学研究》2011年第6期134-138,共5页Sichuan Building Science

基　　金：贵州省科技厅-贵州师范大学联合基金资助项目(黔教科和J字LKS[2009]32号)

摘　　要：通过埋设水平土压力盒、柔性位移计,对模块式土工格栅加筋土挡土墙墙后的水平土压力和格栅水平变形进行了系统监测,采用加筋组合法对加筋土挡墙的土压力进行了计算,与实测、变系数法所得数据对比分析,得出采用该方法计算的土压力更能合理地解释工作状态下加筋土挡墙的土压力分布规律;对比分析了施工阶段和竣工后格栅的应变,得出拉筋应变主要发生在施工阶段,工后应变较小,并结合试验结果,提出了关于施工控制的相关建议。Through burial the level of earth pressure cell, flexible displacement meter, system monitoring the level of earth pressure and grid horizontal deformation of block geogrid-reinforced earth retaining wall, the earth pressure of reinforced earth retaining wall is calculated by reinforce eombination method, comparative analysis the data of field measurement and variable coefficient method, obtained the conclusion that the earth pressure distribution of reinforced earth retaining wall on work condition is more reasonable than other method;comparative analysis the geogrid strain of the construction phase and after completion, draw the conclusion that geogrid strain occurred mainly in construction stage, strain is small in after completion. Based on test results, put forward recommendations how to control the eonstruetion.

关 键 词：单向土工格栅 加筋土挡墙 水平土压力 加筋组合法 

分 类 号：TU43[建筑科学—岩土工程] TU10[建筑科学—土工工程]