Stability analysis method of geogrid reinforced expansive soil slopes and its engineering application
土工格栅加筋膨胀土边坡稳定性的分析方法及工程应用作者机构：National Engineering Laboratory of Highway Maintenance TechnologyChangsha University of Science&TechnologyChangsha 410114China School of Traffic&Transportation EngineeringChangsha University of Science&TechnologyChangsha 410114China Department of Geotechnical and Earth Resources EngineeringAsian Institute of TechnologyKlong LuangPathumthani 12120Thailand
出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)
年 卷 期：2020年第27卷第7期
页 面：1965-1980页
核心收录：
学科分类：081401[工学-岩土工程] 08[工学] 0814[工学-土木工程]
基 金：Project(51978085)supported by the National Natural Science Foundation of China Project(201808430102)supported by the China Scholarship Council Project(JTG-201507)supported by the Highway Industry Standard Compilation Project of Ministry of Transportation,China Project(kfj180102)supported by the Open Fund of Changsha University of Science&Technology,China
主 题：expansive soil lateral swelling pressure geogrid-soil interaction stability analysis engineering application
摘 要：The traditional stability analysis method of geogrid reinforced slopes does not consider the effect of lateral swelling,so it is not applicable to reinforced expansive soil *** paper reports a new stability analysis method for geogrid reinforced expansive soil *** additional pullout force of the free zone due to the lateral swelling and the anti-pullout safety factor of each geogrid layer were obtained by ensuring the overall stability of the reinforced *** optimum design was carried out to treat an expansive soil cut slope in Hubei Province,China,by changing the spacing and length of geogrid *** results show that the additional pullout force caused by lateral swelling has a great influence on the anti-pullout stability of geogrids,and the local stability of the reinforced slope will be overestimated if the swelling effect of soil in the free zone is not considered.
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