Influence of groundwater level changes on the seismic response of geosynthetic-reinforced soil retaining walls

作     者：Fei-fan REN Qiang-qiang HUANG Xue-yu GENG Guan WANG Fei-fan REN;Qiang-qiang HUANG;Xue-yu GENG;Guan WANG

作者机构：Key Laboratory of Geotechnical and Underground Engineering of Ministry of EducationDepartment of Geotechnical EngineeringTongji UniversityShanghai 200092China School of EngineeringUniversity of WarwickCoventry CV47ALUK School of Environment and ArchitectureUniversity of Shanghai for Science and TechnologyShanghai 200093China 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2022年第23卷第11期

页      面：850-862页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：the National Natural Science Foundation of China(No.41877224) the China Scholarship Council(No.202006265003) the National Key Research and Development Program of China(No.2019YFC1509900) 

主　　题：Geosynthetic-reinforced soil retaining walls(GSRWs) Groundwater level Earthquake Stability analysis 

摘      要：Geosynthetic-reinforced soil retaining walls(GSRWs)have been widely used in civil engineering ***,as the climate changes,extreme weather conditions and natural hazards are likely to become more frequent or intense,posing a huge threat to the stability of *** this paper,the effect of groundwater level fluctuations on the seismic response of GSRWs is ***,a dynamic numerical model was established and validated through centrifugal shaking-table test *** the established numerical model,the seismic response of GSRWs under four different groundwater level conditions was then investigated,i.e.,an earthquake occurring at a low groundwater level(Case LW),an earthquake occurring when the groundwater level rises(Case RW),an earthquake occurring at a high groundwater level(Case HW),and an earthquake occurring when the groundwater level drops(Case DW).The results show that the GSRW in Case DW has the worst seismic stability because of the drag forces generated by the water flowing to the outside of the *** Case RW,deformation of the GSRW under earthquake forces was prevented by the drag forces generated by the water flowing to the inside of the GSRW and the water pressure acting on the outside of the facing,giving the GSRW the best seismic stability in this *** with Case LW,the seismic stability of a GSRW in Case HW is worse,because the high groundwater level will generate excess pore-water pressure during an *** this basis,we provide engineering design suggestions to be considered by practitioners.