- 學位論文
鋼結構橋樑節塊推進工法與場撐工法之施工性比較—以桃19號公路斜張橋大竹橋為例
Study on Constructability of Incremental Launching versus Scaffolding Method for Construction of Steel Girder Cable-stayed Bridge: A Case Study of Da-zhu Bridge
若您是本文的作者，可授權文章由華藝線上圖書館中協助推廣。
摘要
臺灣的基礎建設經過近百年的發展，許多橋樑橋齡已逾40載，有許多橋樑需要進行改建，伴隨都市發展帶動週遭區域，橋樑新建的需求也持續產生。鋼結構具有架設快速的優點，橋樑改建、新建工程常以鋼橋取代傳統混凝土橋樑。隨著鋼橋的發展，相應的施工方法卻未見普及，使鋼橋常配合傳統的場撐工法進行施工，失去鋼結構施工快速、交通衝擊小等特性。 國內使用鋼構進行建設的橋樑繁多，然鋼構橋面施工方法的相關研究仍十分有限。本文將以桃19號道路拓寬工程中施作的鋼構斜張橋大竹橋作為研究標的，比較並確認鋼構斜張橋採用全橋面節塊推進工法較場撐工法作為橋面的施工方案更具優勢。 本文回顧過去臺灣橋樑的施工方法，整理鋼橋的施工方法與選擇條件，並蒐集國內外橋樑施工個案，與國外鋼橋採用推進工法的案例等，配合對國內首先使用推進工法進行鋼結構斜張橋上部結構施工的團隊成員進行深度訪談，對桃19號道路拓寬工程中大竹橋選用推進工法取代場撐工法進行橋面施工的相關原因進行個案研究與專家訪談。 本文對兩種不同工法的施工性進行分析。首先根據設計圖中的施工流程與文獻內容，輔以專家訪談，提出場撐工法與推進工法的施工流程；分析場撐工法的適用性問題，和推進工法相對於場撐工法的整體施工性優勢，初步確認推進工法符合不佔用國道，能大幅降低交通衝擊的條件，能夠用來替代傳統場撐工法架設大竹橋。 確認推進工法為目標工法後，對推進工法的設計與實施進行介紹，並對大竹橋個案中運用全橋面節塊推進的實際施作流程進行問題分析。後續分析兩種工法的工項差異、工期與成本和外部效應等施工性的因素。最後，彙整推進工法實施成功的關鍵和整體效益。 本文介紹鋼構斜張橋上部結構採用的工法，並對推進工法實施進行案例研究，分析選擇傳統場撐工法與推進工法的施工性，並提出鋼橋上部結構採用推進施工時成功實施的關鍵因素與工法的整體效益，可作為未來鋼結構橋施作上部結構時，選用推進工法的參考。
並列摘要
Taiwan's infrastructure has developed over the past century, with many bridges exceeding 40 years of service. Numerous bridges require renovation, while the demand for new bridge construction continues to rise alongside urban development. Steel structures take advantages in terms of rapid construction, leading to the replacement of traditional concrete bridges with steel bridges in renovation and new construction projects. However, despite the advancement of steel bridges, corresponding construction methods have not been widely adopted, often resulting in using conventional falsework methods that negate the advantages of steel structure construction, such as speed and minimal traffic disruption. While Taiwan has numerous bridges constructed using steel structures, research on construction methods for steel bridge decks remains limited. This study focuses on the Da-zhu Bridge, a steel cable-stayed bridge involved in the Taoyuan Roadway No.19 Widening Project, aiming to compare and confirm the superiority of the full-deck incremental launching method over the scaffolding method for the bridge deck erection of steel cable-stayed bridges. This thesis reviews past construction methods for bridges in Taiwan, organizes construction methods and selection criteria for steel bridges, and collects domestic and international bridge construction case studies, including cases where foreign steel bridges adopted launching methods. In-depth interviews are conducted with team members who first-ever applied the launching method for the upper structure construction of steel cable-stayed bridges in Taiwan and implemented the Taoyuan Roadway No.19 Widening Project. These interviews facilitate a case study and expert interviews regarding the reasons for selecting the launching method over the scaffolding method for the bridge deck erection of the Da-zhu Bridge. The study analyzes the constructability of both methods. First, based on the construction process in the design drawings and existing literature, supplemented by expert interviews, the construction processes for the scaffolding method and the incremental launching method are proposed. The applicability issues of the scaffolding method are analyzed, and the overall construction advantages of the launching method compared to the scaffolding method are examined. Preliminary findings confirm that the launching method meets the requirements of not occupying the national highway and significantly reducing traffic disruption, making it a suitable alternative to the traditional scaffolding method for the Da-zhu Bridge erection. After confirming the launching method as the target method, the design and implementation of the launching method are introduced, followed by a problem analysis of the actual construction process using the full-deck incremental launching in the case of the Da-zhu Bridge. Subsequently, various construction factors, such as item differences, construction duration, cost, and external effects, are analyzed for both methods. Finally, the key factors for successful implementation and the overall benefits of the launching method are summarized. This thesis introduces the construction method employed for the upper structure of steel cable-stayed bridges and conducts a case study on the implementation of the launching method. It analyzes and compares the constructability of the traditional scaffolding method and the launching method, then determines the key factors for successful implementation and the overall benefits of using the launching method for the upper structure construction of steel bridges. The findings can serve as a reference for selecting the launching method in future steel bridge construction projects.
參考文獻
Xu, Y. L. (2013). Wind effects on cable-supported bridges. John Wiley & Sons.
Svensson, H. (2013). Cable-stayed bridges: 40 years of experience worldwide. John Wiley & Sons.
Gimsing, N. J., & Georgakis, C. T. (2011). Cable supported bridges: Concept and design. John Wiley & Sons.
Yin, R. K. (2009). Case study research： Design and methods (4th Ed.). Thousand Oaks, CA： Sage.
Denzin, N. K., & Lincoln, Y. S. (2005). Introduction： The Discipline and Practice of Qualitative Research. In N. K. Denzin & Y. S. Lincoln (Eds.), The Sage handbook of qualitative research (pp. 1–32). Sage Publications Ltd.