Life Cycle Cost Analysis of Steel and Pre-stressed Concrete Bridges —— A Case Study of a New Highway Bridge in Taiwan
Concrete bridge dominates the structural types of bridges in Taiwan. According to the statistics from the Taiwan Bridge Management System (TBMS), 88％ of bridges in Taiwan are concrete. Nonetheless,the advocator of steel bridge claims that steel is a better choice for bridge structural type. For it is more sustainable and is more economically efficient in the long run. This research conducts a life cycle cost analysis on a new highway bridge in Taiwan, with the steel and the pre-stressed concrete (PC) structural types considered. The life-cycle cost analysis (LCCA) provides a means for the evaluation of bridge design and construction alternatives from the lifetime point of view. With the LCCA the more ecomical bridge alternative can be determined. This research employs a local developed performance-based method in Taiwan for the LCC analysis. The method utilizes the regular inspection data from the local TBMS and integrates into the analysis a deterioration model of bridge components. Three alternatives, namely the pre-stressed concrete bridges, the steel bridges with painting, and the steel bridges with galvanization, are considered for the new bridge and are evaluated for their life cycle costs. Sensitivity analysis on factors such as the service year of galvanization, the price of steel, the preventive maintenance execute rate, the minimum acceptance level and the discount rate, are further carried out for the evaluation of the three alternatives.
Life cycle cost analysis PC Bridge Steel Bridge
Rong-yau Huang, Ping-fu Chen
National Central University Taoyuan,Taiwan
国际会议
上海
英文
454-465
2007-05-16（万方平台首次上网日期，不代表论文的发表时间）