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  • 學位論文

單塔柱雙跨脊背橋之靜力分析

Static Analysis of Extradosed Bridge with Single Pylons

指導教授 : 鄭金國

摘要


本文首先針對脊背橋作一整體介紹,包含脊背橋之演變、主梁、主塔及外置鋼腱系統之介紹,再比較脊背橋、斜張橋及預力橋之特性,接下來依據規範作為結構分析和設計準則。再以臺灣一個單柱雙垮脊背橋案例的靜力分析來說明脊背橋的設計原則和結構行為;最後就分析之結果作ㄧ討論及建議。 本文應用有限元素分析軟體TANGO程式進行脊背橋之靜力分析,討論在不同載重組合下,包括主梁彎矩、軸力、剪力、變位及主梁內力包絡線之分析,以確認脊背橋之應力符合設計規範,以確保橋梁之安全性。

關鍵字

脊背橋 包絡線

並列摘要


The first part of this thesis focuses on the general introduction of extradosed bridge, including the historical review, beam, tower, cable, then on extradosed bridge, cable-stayed bridge, prestressed bridge for comparison of structural behaviors and design criterion based on the specifications. The second part analyzes a practical example designed by a single-towered example in order to illustrate the fundamental principles and structural behaviors of extradosed bridge. Finally, a discussion and suggestion is presented based on the results of the previous analysis. A software program TANGO written by Finite Element Method is used in this thesis to do the analysis. The variation of internal forces, displacements and cable forces under various load combinations have been studied. The results of the analysis including bending moment, axial force, shear force, displacement, cable force of the bridge, and envelope of Influence Line is built up to indicate the stress range of girder. Combined stress and deflection are also checked to ensure the design which meets the requirements of the codes.

參考文獻


13.鄭雅文,「斜張橋在不同載重組合下的靜力分析及自重下的振態分析」,碩士論文,私立中原大學土木工程學系研究所,桃園(2006)。
14.馬瑞符,「利用多振態反應譜疊加法作斜張橋之耐震分析(CQC&SRSS)」,碩士論文,私立中原大學土木工程學系研究所,
16.廖允榛,「單塔柱脊背橋之研究與分析」,碩士論文,私立中原 大學土木工程學系研究所,桃園(2007)。
15.蔣賢均,「雙塔柱脊背橋之研究與分析」,碩士論文,私立中原 大學土木工程學系研究所,桃園(2007)。
20.范進昌,「斜張橋主梁勁度折減之靜態及動態分析」,碩士論文,私立中原大學土木工程學系研究所,桃園(2010)。

被引用紀錄


蔡翼陽(2014)。探討斜張橋與脊背橋於不同塔高及內、 外置預力組合的力學行為〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201400880
黃欣柏(2012)。單塔雙跨脊背橋之靜力與動力分析〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201200780

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