Resonance vibration approach in soil densification:laboratory experiences and numerical simulation

作     者：Du Guangyin Gao Changhui Liu Songyu Pan Huangsong Guo Qian Luo Tao Du Guangyin;Gao Changhui;Liu Songyu;Pan Huangsong;Guo Qian;Luo Tao

作者机构：Department of Underground EngineeringSoutheast UniversityNanjing 211189China Nanjing Tunnel&Bridge Management Co.Ltd.Nanjing 210005China 

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

年 卷 期：2021年第20卷第2期

页      面：317-328页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 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 People′s Republic of China under Grant No.41977241 the Scientific Research Foundation of Graduate School of Southeast University under Grant No.YBPY1981 

主　　题：resonance method sand liquefaction foundation improvement cross-vibration wing model test 

摘      要：This paper describes the improvement effect and mechanism of strengthening a liquefied sand foundation using the cross-vibration wing resonance method,through an indoor model test and numerical *** results obtained from the model test showed that a vertical drainage tube was formed during vibration compaction,and finally a crater with a depth of 40 mm and a radius of 150 mm was formed with sloping *** sand layer obtained a good improvement effect after resonance vibration,especially in the middle-lower sand *** variation in excess pore water pressure showed different behavior in three stages of the vibration process,and the value after treatment was less than before with a decrease of 18.81%.The vibration energy in the horizontal direction gradually decreased to zero,however the absorption of vibration energy of the soil presented obvious nonuniformity along the depth *** results of the numerical simulation were similar to the model test results,including the scope and variation of pore water pressure,and the ground settlement after treatment.