Back analysis of internal force of initial support in tunnel based on touch stress

WEN Jing-zhou; ZHANG Yong-xing; WANG Cheng

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Back analysis of internal force of initial support in tunnel based on touch stress

更新时间：2026-06-25

- Back analysis of internal force of initial support in tunnel based on touch stress
- Vol. 32, Issue 8, (2011)
- 作者机构：
  
  1. 重庆大学土木工程学院,重庆,400045
  2. 重庆大学山地城镇建设与新技术教育部重点实验室,重庆,400045
  3. 重庆交通大学隧道及岩土工程系,重庆,400074
- 作者简介：
- 基金信息：
- DOI：
  CLC： U451
- Online First：16 August 2011，
  
  Published：2011
- 稿件说明：
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WEN Jing-zhou, ZHANG Yong-xing, WANG Cheng. Back analysis of internal force of initial support in tunnel based on touch stress[J]. 2011, 32(8).
DOI：

WEN Jing-zhou, ZHANG Yong-xing, WANG Cheng. Back analysis of internal force of initial support in tunnel based on touch stress[J]. 2011, 32(8). DOI：

摘要

利用现场监控量测的数据及时分析和评价支护结构的内力是隧道动态设计和施工的关键问题，对保证隧道施工的安全具有重要意义。根据初期支护中喷射混凝土自身特点，将喷层结构视为弹性地基曲梁，并运用弹性地基曲梁理论，通过喷射混凝土与围岩接触应力推求喷层结构内力的解析解，从而得到喷层结构的应力集中部位，方便后续制定施工安全措施。经台阶法开挖的隧道工程实例分析表明，从喷层与围岩接触应力出发来求解喷层结构内力解析式是隧道内力分析一种新的有效方法，为隧道结构的安全评估提供比较可靠的依据

Abstract

Using monitoring data to analyze and evaluate internal force of supporting structure is an important problem in dynamic design and construction of tunnel

which has great significance for construction safety. According to the characteristics of shotcrete layer in initial support and the theory of circular beam on elastic foundation

based on touch stresses between shotcrete layer and surrounding rock

the analytical solution of internal force is deduced. The stress concentration position is obtained

which is convenient to make relative safety countermeasures in the following construction. The analysis of tunnel project excavated by bench method shows that the analytical expression of solving internal force based on touch stresses is a new and effective way

so as to provide a more reliable basis for the safety assessment of tunnel structures.

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