| 摘要: | 公路工程之興建與管理生命週期中，橋梁為扮演跨越河川、山谷等障礙物之重要公路設施。然而許多橋梁在經歷過多的砂石車超載、河川砂石盜採、地震、土石流、河川急流侵蝕、橋齡過大等情況下，已受到相當嚴重的損害。尤其在公路系統中，橋梁若因故中斷無法提供服務時，將增加用路人社會成本，影響國家經濟發展甚鉅，故維護橋梁安全管理實為一重要課題。 有鑑於此，為提升目前橋梁管理系統之成效及經濟效益，並導入最低生命週期成本，實有發展一套以生命週期導向之橋梁管理系統之需求。本研究之目的乃建立台灣地區混凝土橋梁安全性指標及評估方法，並以實例評估作業分析評估方法之合理性，藉此建立「生命週期導向之橋梁管理系統」之安全性指標（Safety Index）。主要的研究內容如下： 1.建立橋梁安全性之關鍵因素及評估架構。 2.由所得之關鍵因素發展橋梁安全性之評估方法。 3.利用分析層級程序法（Analytical Hierarchy Process）和戴爾菲法（Delphi）建立各評估方法之權值。 4.由評估實例作業分析本研究之評估方法。 期能由此建立橋梁綜合分數，代表橋梁的安全狀況指標，以作為橋梁檢測及維修之參考依據。 In the building of the transportation network, the bridge has played an important role to cross the river, the valley, etc. However, many bridges are severely damaged due to overloading and natural effects. For instance, many gravel trucks are overloaded, gravel in the river are taken. When stricken by earthquakes or landslides, bridges may face great damage. In the transportation system with ill-maintained bridge, which is not able to provide services for people, the social expenditure will increase. In this way, it will affect the economic development of the country; therefore, it is an important course to maintain the safety of the bridge. In view of this, promoting the efficiency in the bridge management system, the economic efficiency and leading to the lowest cost of the life cycle, it is necessary to develop a life cycle based bridge management system. The goal of this study is to build up the safety index of the bridge with concrete and the rating method, taking examples for the rating method, and thus sets up the Safety Index of “Life-Cycle Based Bridge Management System”. The main contents of this study are as following: 1.Build up the key factors of the bridge safety and construction of the rating method. 2.Develop the safety index of the bridge and the rating method with the key factors. 3.Make use of the Analytical Hierarchy Process and the Delphi method to establish the weight of the proposed method. 4.Use examples to demonstrate the feasibility of the proposed method. We expect to establish the composite scores of the bridge, and regard the safety index of the bridge as the reference for the inspection, repair and management of the bridge hereafter. |
