Maintenance Prioritization Framework for Taiwan’s Pedestrian Bridges

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题名:	Maintenance Prioritization Framework for Taiwan’s Pedestrian Bridges
作者:	Tabor, John Mark M.;Tabor, John Mark M.
贡献者:	土木系營建管理碩士班
关键词:	人行天橋;橋梁管理;橋梁檢測;狀況指數;維護優先順序;德爾菲法;pedestrian bridge;footbridge;bridge management;bridge inspection;condition index;maintenance prioritization;Delphi method
日期:	2022-09-27
上传时间:	2022-10-04 12:24:04 (UTC+8)
出版者:	國立中央大學
摘要:	臺灣交通部（MOTC）已公佈以DER&U 方式檢測與評估橋梁劣化與維護橋梁的相關規範與手冊。此DER&U 的檢測與評估方式已被證明可以有效地維持臺灣公路和鐵路橋梁的結構安全性和服務性。然而，此檢測方與評估式若應用於人行天橋，可能會浪費已經有限的維護資源，因為人行天橋承受的載重較輕，相較於較大橋梁其劣化範圍較為狹隘且有所不同。本研究旨在建立人行天橋的標準化檢測與維護方式，為臺灣的1,268 座人行天橋提供合適的維護管理架構。此架構之基礎，在於先將6 種人行天橋類型的構件分為結構安全性和服務性，並以目視檢測之方式評估各構件之劣化情況，再結合對橋梁專家進行兩輪德爾菲方法訪談所得各類型人行天橋各構件之權重後，即可計算出該人行天橋之橋梁狀況指數。此橋梁狀況指數可用於橋梁檢測和維護之優先順序，可找出所轄橋梁中最迫切需要維修之橋梁。本研究建立之維護管理架構，以桃園市5 座人行天橋做為測試之範例，可驗證此架構具備資源優化的實用性和價值。本研究之成果適用於大量人行天橋之維護管理，對橋梁工程和管理方面的知識體系具相當之貢獻。;The central government of Taiwan, through the Ministry of Transportation and Communications (MOTC), has issued bridge inspection and maintenance specifications and manuals that include the DER&U condition assessment process. This process has proven to be effective in maintaining the structural safety and serviceability of Taiwan’s highway and railway bridge inventory. However, adapting it to pedestrian bridges may only consume undue amount of already limited maintenance resources since they carry lighter loads and thus may experience a narrower spectrum of defects than their larger counterparts. In order to provide a standardized inspection and maintenance approach tailored to their needs, this research developed a framework for the maintenance of Taiwan’s 1,268 pedestrian bridges. The framework is designed to assess the structural safety and serviceability of 6 pedestrian bridge types through visual inspection. Two rounds of Delphi method interviews with bridge experts were conducted to assign weight factors to the components that form each pedestrian bridge type. These weight factors and the visual inspection results are then combined to calculate an index that represents the condition of a pedestrian bridge. The index can be used for inspection scheduling and maintenance prioritization by revealing which pedestrian bridge units in the inventory are the most deteriorated and in urgent need of repair. The framework’s application to 5 pedestrian bridges in Taoyuan City demonstrated its practicality and value in prioritizing pedestrian bridges for maintenance resource optimization. By presenting a strategy for managing a large inventory of pedestrian bridges, this study contributes to the body of knowledge in bridge engineering and management.
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