Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2012 , Vol. 46 >Issue 01: 64 - 68

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2012.01.014

Dynamic Modeling of Underground Structure Based on Viscoelastic Boundaries under Construction Vibration

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  • 1.Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China
    2.Department of Geotechnical Engineering
    3.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China
    4.Shanghai No. 1 Construction Co. Ltd. , Shanghai 200120, China

Received date: 2011-07-27

  Online published: 2012-01-30

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Abstract

A three-dimensional finite element model based on viscoelastic boundaries was developed to effectively capture the dynamic behavior of the metro transfer hall hub of the People's Square. Dynamic characteristics of the underground structure during vibration induced by dismantling temporary reinforced-concrete supporting system were studied, resorting to the Newmark method. In-situ monitoring data were used to calibrate the proposed method in this paper. The results show dynamic characteristics of the underground structure under vibration loading are accurately simulated by the presented model based on viscoelastic boundaries, and thus spurious reflections on the interface of soil and structure can be effectively eliminated. Prediction on the possibility of structural resonance under vibration loading can also be made by the proposed model, which is of benefit to decision making of engineering design and construction.

Key words： demolition vibration; underground structure; viscoelastic boundary; dynamic characteristics

Cite this article

YU Hai-tao, YUAN Yong, ZHU Yi-min, WANG Jian-hua . Dynamic Modeling of Underground Structure Based on Viscoelastic Boundaries under Construction Vibration[J]. Journal of Shanghai Jiaotong University, 2012 , 46(01) : 64 -68 . DOI: 10.16183/j.cnki.jsjtu.2012.01.014

References

[1] 高峰. 地下结构动力分析若干问题研究[D]. 重庆: 西南交通大学土木工程学院, 2003.
[2] Yu T X, Chen X W, Chen Y Z. Elastic-plastic beam-on-foundation subjected to mass impact or impulsive loading[J]. Computers and Structures, 2002, 80(26): 1965-1973.
[3] 刘建航, 俞加康.上海地铁网络的重要枢纽——— 人民广场站[J]. 地下工程与隧道, 2006 (1): 1-5.
[3] LIU Jian-hang, YU Jia-kang. People Square station———Key juncture in Shanghai metro network[J]. Underground Engineering and Tunnels, 2006 (1): 1-5.
[4] Ojalvo I U. Proper use of Lanczos vectors for large eigenvalue problems: Computers and structures, 1985, 20(1): 115-120.
[5] 曹树谦, 张文德, 萧龙翔.振动结构模态分析———理论、实验与应用[M]. 天津: 天津大学出版社, 2002.
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