【摘要】：本文以千廝門嘉陵江大橋?yàn)楣こ桃劳校芯苛藦?fù)雜施工過程中獨(dú)塔單索面非對稱鋼桁梁結(jié)構(gòu)斜拉橋的施工控制理論和方法，對類似工程的設(shè)計(jì)、施工具有重要的指導(dǎo)意義。 千廝門嘉陵江大橋?yàn)橐蛔?dú)塔單索面非對稱鋼桁梁結(jié)構(gòu)斜拉橋，在施工過程中借助臨時(shí)斜拉索和臨時(shí)墩，采用桁架桿件散件懸臂拼裝及其合龍施工成橋，，使得施工過程中橋梁主梁線型及其空間形態(tài)、索塔位移、索力大小等控制技術(shù)、合龍施工控制技術(shù)極其復(fù)雜。本文在分析了該橋施工控制的重點(diǎn)難點(diǎn)，并對懸臂施工過程控制以及合龍段施工控制等問題進(jìn)行了研究的基礎(chǔ)上，利用結(jié)構(gòu)工程軟件Midas/Civil對該橋建立了計(jì)算分析模型，對各施工步驟包括臨時(shí)斜拉索、臨時(shí)墩的安裝與撤除進(jìn)行了正裝計(jì)算和倒裝計(jì)算，得到了各節(jié)段的制造線型和桿件安裝標(biāo)高、斜拉索初張索力，擬定了合龍節(jié)段各桿件合龍標(biāo)高；此外還對合龍方案中影響合龍的因素及其敏感性進(jìn)行了計(jì)算分析，為合龍調(diào)整制定了實(shí)施辦法；通過現(xiàn)場實(shí)時(shí)監(jiān)測的梁體線型（標(biāo)高）、索力和索塔位移與相應(yīng)理論值的對比分析，檢驗(yàn)了施工過程中各個(gè)施工步驟的計(jì)算正確性和適應(yīng)性，最后給出成橋線型、索力和主梁應(yīng)力與設(shè)計(jì)值的對比分析，它們的一致性表明了本文的施工控制方法和計(jì)算分析是正確的。
[Abstract]:Based on the project of Qiantangmen Jialing River Bridge, this paper studies the construction control theory and method of asymmetrical steel truss structure cable-stayed bridge with single tower and single cable surface in the complex construction process, which is of great guiding significance for the design and construction of similar projects. Qianshuimen Jialing River Bridge is a single tower single cable plane asymmetrical steel truss structure cable-stayed bridge. With the help of temporary cable-stayed cables and temporary piers, the bridge is constructed with the help of temporary cable-stayed cables and temporary piers, which makes the bridge main beam line type and its spatial shape, cable tower displacement, cable force size and other control technology extremely complex in the construction process. Based on the analysis of the key and difficult points of the construction control of the bridge, and on the basis of studying the cantilever construction process control and the construction control of the closure section, the calculation and analysis model of the bridge is established by using the structural engineering software Midas/Civil. The formal calculation and reverse calculation are carried out for each construction step, including the temporary cable-stayed cable, the installation and removal of the temporary pier, and the manufacturing line and the installation elevation of the members of each segment are obtained. At the beginning of the cable-stayed cable tension, the closure elevation of each member of the closure section is worked out. In addition, the factors affecting the closure and their sensitivity in the closure scheme are calculated and analyzed, and the implementation methods for the closure adjustment are worked out. Through the comparative analysis of beam line type (elevation), cable force and cable tower displacement and corresponding theoretical values monitored in real time, the correctness and adaptability of each construction step in the construction process are tested. Finally, the comparative analysis of bridge line type, cable force and main beam stress and design value is given. Their consistency shows that the construction control method and calculation analysis in this paper are correct.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U448.27;U445

【共引文獻(xiàn)】

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