本文關(guān)鍵詞：結(jié)合梁斜拉橋設(shè)計中的幾個關(guān)鍵問題研究　出處：《西南交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 內(nèi)力分配 有效寬度 穩(wěn)定性 錨拉板

【摘要】：論文主要是針對重慶江津觀音巖長江大橋設(shè)計中遇到的關(guān)鍵問題,結(jié)合科研項目《大跨度寬橋面結(jié)合梁斜拉橋設(shè)計、施工關(guān)鍵技術(shù)研究》相關(guān)成果,總結(jié)歸納提煉出大跨度寬橋面結(jié)合梁斜拉橋設(shè)計中幾個關(guān)鍵問題的解決方法。論文首先論述了結(jié)合梁斜拉橋設(shè)計中的結(jié)構(gòu)計算方法,采用簡單實用的前進分析法建立了全橋施工計算模型,摸清了結(jié)合梁斜拉橋的總體受力特性,再通過有限元模型對不同荷載作用下的結(jié)合梁鋼-混凝土內(nèi)力分配情況進行分析,總結(jié)了主動調(diào)整結(jié)合梁內(nèi)力分配的有效措施。其次討論了目前設(shè)計規(guī)范采用的有效寬度計算方法,指出了該方法在應(yīng)用中的不足,結(jié)合有限元分析結(jié)論,提出了便于使用的簡易結(jié)合梁斜拉橋有效寬度確定方法。通過實橋計算實例對結(jié)合梁的穩(wěn)定性進行分析,并找出了主梁失穩(wěn)模態(tài)與M/N內(nèi)力狀態(tài)的相互關(guān)系。通過實橋錨拉板計算實例對結(jié)合梁的錨拉板的受力行為進行了分析,并介紹江津長江大橋錨拉板動靜載模型試驗的結(jié)果。
[Abstract]:This paper is mainly aimed at the key problems of Chongqing Jiangjin Guanyinyan Yangtze River bridge in the design, combined with the research project "large span wide deck composite girder cable-stayed bridge design and Research on the key technologies of construction > related results, summarized the extracted solution of large span wide deck girder cable-stayed bridge with the key issues in the design. The paper first discusses several the combination of structure design of cable-stayed bridge in the calculation method, using a simple and practical forward analysis method to establish the calculation model of the construction of the bridge, to find out the composite girder cable-stayed bridge overall stress characteristics, and then through the finite element model of different loads with steel and concrete beam internal force distribution is analyzed. Summarizes the combination of effective measures to take the initiative to adjust the internal force of the beam distribution. Secondly, the calculation method of effective width of the current design specification is adopted, the problem in the application of the combination. The finite element analysis results, put forward a simple combination method to determine the effective width of cable-stayed bridge is easy to use. Examples of the analysis of the stability of beam through the calculation of the real bridge, and find out the relationship between the instability mode and M/N internal force state. Calculation examples of mechanical behavior of composite beams of tensile anchor plate through the analysis of the real bridge anchor plate, and the Jiangjin Yangtze River bridge tensile anchor plate static load model test results.

【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U448.27

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本文編號：1386730