Quantitative risk assessment model of tunnel construction under passing existing bridges

被引：7

作者：

Chen, Jiejin ^{[1
,2
]}

Zhang, Yongjie ^{[1
]}

机构：

[1] School of Civil Engineering and Architecture, Changsha University of Science and Technology, Changsha

[2] Geotechnical Engineering Disaster Prevention and Environmental Remediation Technology of 2011 Collaborative Innovation Center, Changsha University of Science and Technology, Changsha

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2015年 / 46卷 / 05期

基金：

中国国家自然科学基金;

关键词：

FAHP analysis; Fuzzy fault tree; Risk; Tunnel construction;

D O I：

10.11817/j.issn.1672-7207.2015.05.039

中图分类号：

学科分类号：

摘要：

The quantitative risk assessment system of city tunnel construction underpassing existing bridges was studied. Considering the presence of random and fuzzy uncertainties in city tunnel construction, a fuzzy fault tree risk assessment model was set up based on the fault tree, interval algorithm and fuzzy math. Firstly, the main influence factors and corresponding risk basis event were summarized on the basis of the investigation of more than 100 cases about accidents caused by the tunnel improper construction adjacent buildings and constructs. Secondly, the fuzzy probability of basic events was determined according to experts' experience and simulation tests, and the fuzzy probability of adjacent buildings damages and the fuzzy important degree of each factor were obtained through the interval algorithm. Furthermore, the consequence of damaging risks of the adjacent bridges was evaluated by fuzzy hierarchical evaluation model. Finally, the engineering example was analyzed to identify the correctness and effectiveness of this method. The results show that the method provides a complete assessment system for city tunnel construction underpassing existing bridges, and it provides important reference on risk avoidance for risk management institute. ©, 2015, Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology). All right reserved.

引用

页码：1862 / 1868

页数：6

共 17 条

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