Shaking table tests and numerical simulations of dynamic interaction of soil-pile-nuclear island system

被引：0

作者：

Jing L.-P. ^{[1
,2
]}

Wang G. ^{[2
]}

Li J.-R. ^{[2
]}

Sun Y.-L. ^{[3
]}

Zhou Z.-Y. ^{[2
]}

Qi W.-H. ^{[2
]}

机构：

[1] School of Disaster Prevention Science and Technology, Sanhe

[2] Institute of Engineering Mechanics, China Earthquake Administration, Harbin

[3] China Nuclear Energy Technology Co., Ltd., Beijing

来源：

Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2022年 / 44卷 / 01期

关键词：

Dynamic response; Nuclear island; Numerical simulation; Pile foundation structure; Shaking table test;

D O I：

10.11779/CJGE202201016

中图分类号：

学科分类号：

摘要：

The dynamic response characteristics of soil-pile-nuclear island system are studied through the shaking table tests. The distribution pattern of internal force, deformation mode and failure mechanism of piles are analyzed. The test results show that when the RG160 artificial waves of different amplitudes are input, acceleration amplification occurs in both the soil layer and the pile foundation structure. The peak value of the amplification coefficient of the free field far away from the structure appears on the soil surface, while the peak value of the amplification coefficient of the soil layers between piles appears in the middle part, which indicates that the pile foundation has a certain influence on the acceleration amplification of the soil layers. The peak value of the amplification coefficient along pile appears in the middle part and then decreases near the pile cap indicating that the superstructure has a significant effect on the acceleration amplification distribution along the piles. The shear force of pile body is the maximum at the pile-cap connection and decreases with the increase of depth, while the bending moment is larger at the top and middle upper positions of the piles. The pile-cap joint and the middle part of the piles (about 6 times the diameter of the piles) are the weak point of the piles, and the failure modes are tensile shear failure and bending failure. The failure sequence of the pile groups is that the piles at one side along the vibration direction are damaged first and cause the failure of the middle corner piles, then the middle piles are damaged, and the piles at the other side are destroyed finally. The possible failure mechanism of the pile groups under horizontal seismic loads is that the piles at one side along the vibration direction are more likely to be affected and damaged first by the earthquake because of the weak constraint of the around soils, and then cause the destruction of other piles. The conclusion can provide reference for the seismic design of pile foundation of nuclear island plants. © 2022, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.

引用

页码：163 / 172

页数：9

共 16 条

[1] ZHAO Xiao-guang, GAO Wen-sheng, Experimental study on seismic response of pile group foundation with high-cap by shaking table, Building Structure, 49, 17, pp. 120-129, (2019)
[2] XIE Wen, SUN Li-min, Experimental studies on seismic response characteristics of dynamic interaction system of pile-soil-cable-stayed bridges, Chinese Journal of Geotechnical Engineering, 41, 7, pp. 1319-1328, (2019)
[3] XU Cheng-shun, DOU Peng-fei, DU Xiu-li, Et al., Shaking table test study on dynamic response of non liquefiable soil pile group foundation structure system, Journal of Building Structure, pp. 1-11
[4] CHEN Yue-qing, LU Xi-lin, LI Pei-zhen, Et al., Comparative study on the dynamic soil-structure interaction system with various soils by using shaking table model tests, China Civil Engineering Journal, 39, 5, pp. 57-64, (2006)
[5] CHANG B J, HUTCHINSON T C., Experimental investigation of plastic demands in piles embedded in multi-layered liquefiable soils, Soil Dynamics and Earthquake Engineering, 49, pp. 146-156, (2013)
[6] CHANG B J, HUTCHINSON T C., Tracking the dynamic characteristics of a nonlinear soil-pile system in multi-layered liquefiable soils, Soil Dynamics and Earthquake Engineering, 49, pp. 89-95, (2013)
[7] HAERI S M, KAVAND A, RAHMANI I, Et al., Response of a group of piles to liquefaction-induced lateral spreading by large scale shake table testing, Soil Dynamics and Earthquake Engineering, 38, pp. 25-45, (2012)
[8] KOBAYASHI K, YAO S, YOSHIDA N., Dynamic compliance of pile group considering nonlinear behavior around piles, Proceedings of 2nd International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics, pp. 785-792, (1991)
[9] ALAMO G M, PADRON L A, AZNAREZ J J, Et al., Structure-soil-structure interaction effects on the dynamic response of piled structures under obliquely incident seismic shear waves, Soil Dynamics and Earthquake Engineering, 78, pp. 142-153, (2015)
[10] HUSSIEN M N, KARRAY M, TOBITA T, Et al., Kinematic and inertial forces in pile foundations under seismic loading, Computers and Geotechnics, 69, pp. 166-181, (2015)

← 1 2 →