›› 2010, Vol. 31 ›› Issue (11): 3525-3530.

• Geotechnical Engineering • Previous Articles     Next Articles

Some influence factors on displacement characteristics of cavern group under strong earthquake

ZHANG Yu-min 1, 2，SHENG Qian1，ZHU Ze-qi1，YANG Ji-hua1   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China
  • Received:2009-06-10 Online:2010-11-10 Published:2010-11-24

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Abstract:

Considering the depth attenuation effect of bedrock site, the artificial seismic waves with different spectra for large-scale underground cavern group are created by trigonometric series superposition. The time-history nonlinear dynamic response analysis method is used to simulate the seismic response to the large-scale underground cavern group of some hydropower station in Southwest China; and the displacement characteristics are studied in the case of different geostresses, peak accelerations and spectra. The results show that the relative displacements of underground cavern group increase with lateral stress coefficients and peak accelerations. Furthermore, waves with different stectra result in distinct displacement characteristics. The present work could be used as a primary guidance to the aseusnuc design for underground caverns.

Key words: large-scale underground cavern group, non-stationary artificial seismic motion, dynamic time-history response analysis method, displacement characteristics, high-intensity seismic region

CLC Number: 

  • TU 45
[1] LIU Xiao-min ，SHENG Qian ，CHEN Jian ，KE Wen-hui ，YANG Ji-hua,. Seismic shaking table test for large-scale underground cavern group (Ⅱ):Test scheme [J]. , 2015, 36(6): 1683-1690.
[2] ZHANG Yu-min, SHENG Qian, ZHANG Yong-hui, ZHU Ze-qi. Artificial simulation of nonstationary artificial seismic motion for large-scale underground cavern group located in alpine gorge area [J]. , 2009, 30(S1): 41-46.
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