不同土工加筋方式对填方边坡稳定性的影响  

THE INFLUENCE OF DIFFERENT REINFORCEMENT METHODS ON THE STABILITY OF FILLED SLOPE

作　　者：盛学庆 吴浩[2] 邓岳保 SHENG Xueqing;WU Hao;DENG Yuebao(Hangzhou Electric Power Design Co.,Ltd.,Hangzhou 310006,China;Hangzhou Power Supply Company of State Grid Zhejiang Electric Power Company,Hangzhou 310016,China;Institute of Geotechnical Engineering,Ningbo University,Ningbo 315211,China)

机构地区：[1]杭州市电力设计院有限公司,杭州310006 [2]国网浙江省电力公司杭州供电公司,杭州310016 [3]宁波大学岩土工程研究所,浙江宁波315211

出　　处：《工业建筑》2020年第4期60-65,共6页Industrial Construction

基　　金：浙江省自然科学基金面上项目(LY17E080008);杭州市电力设计院有限公司科技项目(188002)。

摘　　要：针对某变电站填方地基边坡处理实际工程,开展不同土工加筋方式处理的填方边坡模型试验,测试坡体竖向沉降及侧向位移,对比素土边坡(未加筋)、普通加筋边坡和包裹式加筋边坡的变形和稳定性。在此基础上开展有限元分析,并将数值结果与试验结果进行对比。结果表明:加筋效应随着荷载增大而增大;普通加筋和包裹式加筋能有效减小边坡坡顶沉降和侧向位移;加筋对坡体塑性区贯通产生隔断效应,由此提高边坡稳定性;普通加筋和包裹式加筋的极限荷载分别是素土边坡的1.7和1.9倍;包裹式加筋的极限荷载是普通加筋方式的1.12倍。Aiming at an actual substation engineering slope treatment,the model tests of the filled slope treated by different geotechnical reinforcement methods were conducted to investigate the vertical settlement and lateral displacement of the slope,and compare the deformation characteristics and stability with the plain slope,ordinary reinforcement slope and wrapped reinforcemant slope by geothextilo.On the basis,the finite element analysis was carried out,and it was found that the reinforcement effect was improved with the increase of loading.Both ordinary reinforcement and wrapped reinforcement could effectively reduce the lateral displacement and the vertical settlement.Reinforcement formed a partition effect on the plastic zone in the slope,and thus improved the stability of slope.The ultimate bearing capacity of the ordinary and wrapped reinforcement was 1.7 and 1.9 times larger than that without reinforcement,respectively,the ultimate bearing capacity of the wrapped was 1.12 times of that the with ordinary.

关 键 词：填方地基 土工加筋 包裹式加筋 稳定性 侧向变形 

分 类 号：TU472[建筑科学—结构工程]