›› 2012, Vol. 33 ›› Issue (S2): 307-310.

• Geotechnical Engineering • Previous Articles     Next Articles

Theoretical analysis model of deformation behavior of tunnel linings subjected to fire load

LI Zhong-you1, 2, LIU Yuan-xue1, 2, LIU Shu-lin3, TAN Yi-Zhong1, GE Zeng-chao1   

  1. 1. Department of Architectural and Civil Engineering, Logistical Engineering University, Chongqing 401311, China; 2. Chongqing key Laboratory of Geomechanics & Geoenvironmental Protection, Logistical Engineering University, Chongqing 401311, China; 3. Guangzhou Military Area Air Logistics Ministry, Guangzhou 510010
  • Received:2012-05-10 Online:2012-11-22 Published:2012-12-11

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Abstract: Tunnel fire accidents can lead to the damage of inner structure and the degradation of mechanical properties of lining materials; and then cause the increase of deformation of tunnel linings which are danger to the safety of tunnel structures. Based on the theory of geometric and material nonlinearity, a theoretical analysis model of linings deformation of tunnel subjected to fire load is presented. In the model, the influences of thermal damage and thermal expansion are taken into account. In a example, the analytical solution of cross-section slope and radial deflection of tunnel lining subjected to fire load is presented. The influence of fire duration on the deformation of lining is analysed, which can provide the theory basis to practice engineering.

Key words: tunnel engineering, fire hazard, lining structure, deformation, analysis model

CLC Number: 

  • U 45
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