Deformation and localisation behaviours of reinforced gravelly backfill using shaking table tests

作     者：H.Munoz T.Kiyota H. Munoz;T. Kiyota

作者机构：Institute of Industnial ScienceThe University of TokyoTokyoJapan 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2020年第12卷第1期

页      面：102-111页

核心收录：

学科分类：08[工学] 081401[工学-岩土工程] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：the Japan Society for the Promotion of Science and their financial support through the JSPS Fellowship Programme to conduct research activities at the University of Tokyo. 

主　　题：Geosynthetic-reinforced soil(GRS) Retaining wall(RW)model Shaking table test Digital image correlation(DIC) Localisation 

摘      要：To understand the deformational behaviours of geosynthetics-reinforced soil retaining walls(GRS RWs),a series of plane-strain shaking table tests was conducted on retaining wall models.The backfill of the models was made of poorly graded gravel.Deformations and strains in the gravelly backfill induced by seismic loading are recorded in real time,which are of importance to understand the seismic strength and stability of the GRS RW systems,as strain localisation development in the backfill and foundation is related to the degree of strength degradation of the system.In the present study,we aimed at quantifying the induced deformations of the GRS RW models due to shaking.Digital image correlation(DIC)technique was then employed to analyse and provide full-field deformation and motion images with the models.It is demonstrated that,unlike conventional contact devices that are yet limited to provide quantities of a singular and fixed location,DIC provides deformation and motion of the area of interests to reveal the evolution of localisation.