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

LI Zhong-you; LIU Yuan-xue; LIU Shu-lin; TAN Yi-Zhong; GE Zeng-chao

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

更新时间：2026-06-25

- Theoretical analysis model of deformation behavior of tunnel linings subjected to fire load
- Vol. 33, Issue S2, (2012)
- 作者机构：
  
  1. 后勤工程学院建筑工程系,重庆,401311
  2. 后勤工程学院岩土力学与地质环境保护重庆市重点实验室,重庆,401311
  3. 广州军区空军后勤部,广州,510010
- 作者简介：
- 基金信息：
- DOI：
  CLC： U45
- Online First：11 December 2012，
  
  Published：2012
- 稿件说明：
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LI Zhong-you, LIU Yuan-xue, LIU Shu-lin, et al. Theoretical analysis model of deformation behavior of tunnel linings subjected to fire load[J]. 2012, 33(S2).
DOI：

LI Zhong-you, LIU Yuan-xue, LIU Shu-lin, et al. Theoretical analysis model of deformation behavior of tunnel linings subjected to fire load[J]. 2012, 33(S2). DOI：

摘要

火灾作用下衬砌材料力学性能的劣化会引起隧道结构的损伤，变形量的增大，危害隧道运营安全。基于几何和材料非线性理论，综合考虑火灾作用下衬砌结构中温度的非线性分布，材料力学性能的高温劣化及热膨胀等因素的影响，提出用于描述火灾作用下隧道衬砌结构变形行为的理论分析模型。在此基础上，给出半圆形隧道在火灾作用下截面转角及径向变形的解析解，分析火灾持续时间对衬砌变形行为的影响规律，可为隧道结构防火设计及灾后评估提供理论依据。

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.

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