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Scientific Programming
Volume 2016, Article ID 9628095, 5 pages
Research Article

Optimal Allocation of Tunnel Safety Provisions Based on a Quantitative Risk Assessment Model

1School of Urban Rail Transportation, Soochow University, Suzhou, Jiangsu 215131, China
2School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia

Received 13 September 2016; Accepted 10 November 2016

Academic Editor: Si Zhang

Copyright © 2016 Pan Li and Xiaobo Qu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper addresses the issue of optimally selecting the tunnel safety provisions. Tunnel safety provisions are the assets of urban road tunnels which are installed and implemented to reduce the tunnel risks, which are basically selected by expert judgment in practice. An optimization model is proposed to obtain the optimal solution for the selection of tunnel safety provisions. The objective function is to minimize the life cycle costs of tunnel safety provisions, which is subject to the requirements for tunnel safety provisions and the safety targets. Finally, by taking advantage of the special structure of the optimization model, a Bi-Section Search and Bound Algorithm (BSSBA) is designed to efficiently solve the problem.