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Volume 35 Issue 8
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ZHAO Wu-sheng, CHEN Wei-zhong, TAN Xian-jun, HUANG Sheng. High-performance foam concrete for seismic-isolation materials of tunnels[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(8): 1544-1552.
Citation: ZHAO Wu-sheng, CHEN Wei-zhong, TAN Xian-jun, HUANG Sheng. High-performance foam concrete for seismic-isolation materials of tunnels[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(8): 1544-1552.
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High-performance foam concrete for seismic-isolation materials of tunnels

  • 1. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, State Key Laboratory of Geomechanics and Geotechnical Engineering, Wuhan 430071, China; 2. Geotechnical & Structural Engineering Research Center of Shandong University, Jinan 250061, China; 3. China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China

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  • Received Date: July 06, 2012
  • Published Date: August 19, 2013
    Graphical Abstract
    • Abstract
  • Protecting the lining of the tunnel with high intensity by coating materials is an effective way to reduce seismic damage. In order to produce a type of economical and reliable seismic-isolation material, an orthogonal experiment on foam concrete is performed. The main factors influencing the seismic-isolation property and the optimum mixture ratio of foam concrete are obtained, and a new type of high-performance foam concrete is developed. The static and dynamic tests results show that the strength, ductility and watertightness of the foam concrete are significantly improved. Besides, in order to check its seismic-isolation property, the high-performance foam concrete as filling materials of Galongla tunnel in Tibet is simulated by FEM. The simulated results show the high-performance foam concrete can remarkably decrease the stress and the plastic zone in final lining, so it can effectively reduce the seismic damage of the tunnel. Considering the seismic-isolation property and low price of high-performance foam concrete, it is a good reference for the anti-seismic design of tunnels in high intensity zone.
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