Y.Q. Wang, Y. Li, A. Chen & X. Ruan
Bridge Maintenance, Safety, Management, Resilience and Sustainability – Biondini & Frangopol (Eds). London:
© 2012 Taylor & Francis Group, London, ISBN 978-0-415-62124-3: 1023- 1029
This paper focuses on how to quantify disaster, bridge form and driving comfort related objectives by cost analysis method. With to the disaster related cost, this paper researches and simulates seven disasters in the computation period by Monte Carlo Method. For the four outburst disasters, namely wind, flood, earthquake and collision, firstly determine their typical parameters, assume their Probability Distribution Functions (PDF), and then generate typical parameter vectors or matrixes in computation period. Those vectors or matrixes, assumed vulnerability matrices and loss matrices are then used to obtain disaster induced repair cost, time delay cost, bridge defect incurred accident cost and extra vehicle operating cost. Besides, damages from fatigue, salt and overload are long-term and gradually increasing, thus extra reductions of bridge resistance index are used to model their affects on bridges. It is suggested to quantify the qualitative description of driving comfort and bridge form, or take the construction cost or Willingness to Pay (WTP) compared to the referenced scheme as the substitutive attributes. In the end, a decision problem of bridge type scheme is illustrated in order to show the application of the proposed method in attribute value calculations.