Centrifuge and numerical modeling of h-type anti-slide pile reinforced soil-rock mixture slope

查看全文 作　　者：ZHANG [1,2,3]Hao;XING Hao-[1]feng;XUE Dao-[4]rui;TANNANT [3]Dwayne

机构地区：[1]Department of Geotechnical Engineering,College of Civil Engineering,Tongji University,Shanghai 200092,China;[2]School of Urban Construction and Transportation,Hefei University,Hefei 230601,China;[3]School of Engineering,University of British Columbia,Kelowna BC V1V 1V7,Canada;[4]Guangdong Communication Planning and Design Institute Group Co.,Ltd.,Guangzhou 510507,China

出　　处：《Journal of Mountain Science》索引2023年第20卷第5期,共17页

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.41672273,42177137);the Fundamental Research Funds for the Central Universities(22120180313);the support from China Scholarship Council(CSC)(202106260151);substantially supported by the Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education(Tongji University)。 摘　　要：Due to the loose structure,high porosity and high permeability of soil-rock mixture slope,the slope is unstable and may cause huge economic losses and casualties.The h-type anti-slide pile is regarded as an effective means to prevent the instability of soilrock mixture slope.In this paper,a centrifuge model test was conducted to investigate the stress distribution of the h-type anti-slide pile and the evolution process of soil arching during the loading.A numerical simulation model was built based on the similar relationship between the centrifuge model and the prototype to investigate the influence factors of the pile spacing,anchored depth,and crossbeam stiffness,and some recommendations were proposed for its application.The results show that the bending moment distribution of the rear pile exhibits Wshaped,while for the front pile,its distribution resembles V-shaped.The soil arching evolution process during loading is gradually dissipated from bottom to top and from far to near.During the loading,the change of bending moment can be divided into three stages,namely,the stabilization stage,the slow growth stage,and the rapid growth stage.In engineering projects,the recommended values of the pile spacing,anchored depth,and crossbeam stiffness are 4.0d,2.0d,and 2.0EI,where d and EI are the diameter and bending stiffness of the h-type anti-slide pile respectively. 关键词：Centrifugemodel test Numerical simulation h-type anti-slide pile Soil-rock mixture slop Soil arching

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Centrifuge and numerical modeling of h-type anti-slide pile reinforced soil-rock mixture slope

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