Dynamic interaction and seismic response of non-liquefiable soil-pile group foundation-structure system from shaking table test

被引：0
|
作者：
Xu C. [1 ]
Dou P. [1 ]
Du X. [1 ]
Chen S. [2 ]
Li X. [3 ]
机构：
[1] The Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing
[2] Institute of Geophysics, China Earthquake Administration, Beijing
[3] Beijing Urban Construction Design Development Group Co., Ltd, Beijing
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2022年 / 43卷 / 05期
关键词：
Dynamic response; Non-liquefiable site; Pile group foundation; Shaking table test;
D O I：
10.14006/j.jzjgxb.2020.0260
中图分类号：
学科分类号：
摘要：
In order to deeply study the seismic response of pile-structure system and soil-structure dynamic interaction in non-liquefiable sites, a large-scale shaking table test of dynamic interaction of soil-structure system was carried out, and the acceleration seismic response characteristics of non-liquefiable sites and pile group foundation were expounded emphatically in this paper. Besides, the law of lateral deformation of soil and the distribution of bending moment of pile foundation were analyzed. The test results show that the acceleration response of soil and pile foundation is amplified and the amplification of acceleration is more obvious when the soil is far from the structure as the 0.05g sine beat wave is input. When 0.3g Wenchuan Earthquake seismic record is input, the acceleration response is only magnified in the soil far from the pile foundation and the maximum bending moment of the pile is more than 60 N•m, the bending moment amplitude of pile foundation basically shows the rule that the upper bending moment is small (near the top of pile) and the lower bending moment is large (near the end of pile) and the bending moment near the soil interface has a sudden change. Besides, the acceleration response of superstructure decreases to a certain extent and the intensity of Arias decreases obviously when 0.3g Wenchuan Earthquake seismic record is input, and Arias of structures on rigid sites are 3 to 4 times larger than that on soil, indicating that the energy dissipation of soil is obvious. © 2022, Editorial Office of Journal of Building Structures. All right reserved.
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页码：185 / 194and204
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