Analytical solution of dynamic response of underground box structure under explosion seismic wave

被引：0
|
作者：
Liu Y. [1 ]
Zhao Y. [2 ]
Luo K. [3 ]
Zhao P. [4 ]
机构：
[1] School of Civil Engineering, Xuchang College, Xuchang
[2] State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing
[3] The Institute of the Rocket Force, Beijing
[4] College of Urban and Environmental Studies, Xuchang College, Xuchang
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2023年 / 42卷 / 21期
关键词：
analytical solution; box structure; dynamic response; explosion seismic wave;
D O I：
10.13465/j.cnki.jvs.2023.21.037
中图分类号：
学科分类号：
摘要：
Here, based on the plane elastic wave theory, a diffraction model of dynamic response of underground box structure under explosive seismic wave was established. Compared with 1D lumped parameter model, 1D elastic-plastic wave theory model and test results in Luoyang soil, the correctness of the model was verified. Effects of incident wave angle, lining aspect ratio, surrounding rock medium and explosion distance on the dynamic response were studied. The results showed that with increase in incident angle, displacements of lining different positions have obvious nonuniform distribution characteristics, displacements of left side wall are larger than those of top and bottom plates; with increase in aspect ratios, peak displacements of lining increase, and axial forces of top plate and side walls decrease; when the impedance ratio is larger than 0. 17, effects of surrounding rock characteristics on lining are more obvious; stress amplitude at each position of lining decreases with increase in explosion distance, the larger the distance, the weaker the impact. © 2023 Chinese Vibration Engineering Society. All rights reserved.
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页码：306 / 315
页数：9
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