Liquefaction susceptibility and deformation characteristics of saturated coral sandy soils subjected to cyclic loadings-a critical review

作     者：Chen Guoxing Qin You Ma Weijia Liang Ke Wu Qi C.Hsein Juang Chen Guoxing;Qin You;Ma Weijia;Liang Ke;Wu Qi;C.Hsein Juang

作者机构：Institute of Geotechnical EngineeringNanjing Tech UniversityNanjing 210009China Civil Engineering and Earthquake Disaster Prevention Center of Jiangsu ProvinceNanjing 210009China School of Mechanical EngineeringNanjing University of Science and TechnologyNanjing 210094China College of Civil AviationNanjing University of Aeronautics and AstronauticsNanjing 210016China Glenn Department of Civil EngineeringClemson UniversityClemsonSC 29634USA 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2024年第23卷第1期

页      面：261-296页

核心收录：

学科分类：08[工学] 0818[工学-地质资源与地质工程] 080104[工学-工程力学] 0815[工学-水利工程] 0814[工学-土木工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：National Natural Science Foundation of China under Grant No.52278503 

主　　题：liquefaction susceptibility dynamic deformation characteristics coral sandy soil cyclic loading review and prospect 

摘      要：Coral sandy soils widely exist in coral island reefs and seashores in tropical and subtropical *** to the unique marine depositional environment of coral sandy soils,the engineering characteristics and responses of these soils subjected to monotonic and cyclic loadings have been a subject of intense interest among the geotechnical and earthquake engineering *** paper critically reviews the progress of experimental investigations on the undrained behavior of coral sandy soils under monotonic and cyclic loadings over the last three *** focus of coverage includes the contractive-dilative behavior,the pattern of excess pore-water pressure(EPWP)generation and the liquefaction mechanism and liquefaction resistance,the small-strain shear modulus and strain-dependent shear modulus and damping,the cyclic softening feature,and the anisotropic characteristics of undrained responses of saturated coral sandy *** particular,the advances made in the past decades are reviewed from the following aspects:(1)the characterization of factors that impact the mechanism and patterns of EPWP build-up;(2)the identification of liquefaction triggering in terms of the apparent viscosity and the average flow coefficient;(3)the establishment of the invariable form of strain-based,stress-based,or energy-based EPWP ratio formulas and the unique relationship between the new proxy of liquefaction resistance and the number of cycles required to reach liquefaction;(4)the establishment of the invariable form of the predictive formulas of small strain modulus and strain-dependent shear modulus;and(5)the investigation on the effects of stress-induced anisotropy on liquefaction susceptibility and dynamic deformation *** gained through the critical review of these advances in the past decades offer a perspective for future research to further resolve the fundamental issues concerning the liquefaction mechanism and responses of coral sandy sites subjecte