Development of a Novel Quantitative Risk Assessment Software Tool for Road Tunnels

Abstract

This paper deals with an interesting approach to develop a quantitative risk assessment (QRA) software tool for road tunnels. It first presents a novel QRA model of road tunnels, consisting of event trees and fault trees and consequence estimation models, which is developed by taking into account unique characteristics of Singapore's road tunnels. This paper proceeds to design the QRA software tool based on the proposed QRA model by means of the object oriented design (OOD) method and XML database technique. The QRA software tool developed in study is robust and flexible such that users can plug-in their own event trees, fault trees and the consequence estimation models. An illustrative case study is carried out to test robustness and effectiveness of the QRA software tool.