Investigation on seismic response of a three-stage soil slope supported by anchor frame structure

作     者：LIN Yu-liang LI Ying-xin ZHAO Lian-heng YANG T Y 林宇亮;李英鑫;赵炼恒;YANG T Y

作者机构：School of Civil EngineeringCentral South UniversityChangsha 410075China Department of Civil Engineeringthe University of British ColumbiaVancouver V6T 1Z4Canada Key Laboratory of Engineering Structures of Heavy Haul Railway of Ministry of EducationCentral South UniversityChangsha 410075China International Joint Research Laboratory of Earthquake EngineeringTongji UniversityShanghai 200092China 

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4期

页      面：1290-1305页

核心收录：

学科分类：0810[工学-信息与通信工程] 0806[工学-冶金工程] 08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Projects(51878667,51678571)supported by the National Natural Science Foundation of China Project(2018zzts657)supported by the Central South University Postgraduates’Innovation,China Project(2018JJ2517)supported by the Hunan Provincial Natural Science Foundation of China 

主　　题：three-stage soil slope anchor frame structure acceleration displacement anchor stress 

摘      要：Based on a typical prototype of a soil slope in engineering practice, a numerical model of a three-stage soil slope supported by the anchor frame structure was established by means of FLAC3D code. The dynamic responses of three-stage soil slope and frame structure were studied by performing a series of bidirectional Wenchuan motions in terms of the failure mode of three-stage structure, the acceleration of soil slope, the displacement of frame structure, and the anchor stress of frame structure. The response accelerations in both horizontal and vertical directions are the most largely amplified at the slope top of each stage subjected to different shaking cases. The platforms among the stages reduce the amplification effect of response acceleration. The residual displacement of frame structure increases significantly as the intensity of shaking case increases. The frame structure at each stage presents a combined displacement mode consisting of a translation and a rotation around the vertex. The anchor stress of frame structure is mainly increased by the first intense pulse of Wenchuan seismic wave, and it is sensitive to the intensity of shaking case. The anchor stress of frame structure at the first stage is the most considerably enlarged by earthquake loading.