Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (2): 299-304.DOI: 10.12068/j.issn.1005-3026.2014.02.033

• Resources & Civil Engineering • Previous Articles    

Seismic Wave Propagation Around Circular Tunnel Structure in Semiinfinite Soil Body

YANG Xujiao1, HU Zhendong1, LIANG Jun2, JIA Hongrui3   

  1. 1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China; 2. Marine Design and Research Institute, Qingdao Beihai Shipbuilding Heavy Industry Co., Ltd., Qingdao 266520, China; 3. The 2nd Engineering Co, Ltd. of China Railway 17 Bureau Group Corporation, Xi’an 710043, China.
  • Received:2013-05-02 Revised:2013-05-02 Online:2014-02-15 Published:2013-11-22
  • Contact: YANG Xujiao
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Abstract: Based on the scattering theory of elastic waves, the scattering of SH wave and the dynamic stress concentration around circular tunnel with lining were investigated by employing the wave function expansion and mirror methods. The analytical solution of the problem, which was taken as a group of unlimited algebraic equations, was derived, and the numerical solution of the dynamic stress concentration factor around the lining was given. The effects of the shear elasticity of the surrounding rock and the lining, together with the wave number on the dynamic stress concentration factors were analyzed. It is shown that the shear elasticity of the surrounding rock and the wave number are factors that influence dynamic stress concentration, which may provide important theoretical basis for the earthquake evaluation of lining.

Key words: circular tunnel, scattering of SH wave, boundary conditions, dynamic stress concentration factor, analytical solution

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