本文關(guān)鍵詞：剛構(gòu)—連續(xù)組合梁橋合攏方案優(yōu)化與施工控制研究　出處：《長(zhǎng)沙理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 剛構(gòu)—連續(xù)組合梁橋 仿真分析 0號(hào)塊 最優(yōu)合攏順序 施工控制

【摘要】：剛構(gòu)—連續(xù)組合梁橋是一種現(xiàn)如今發(fā)展迅速的橋型,隨著此類橋型被廣泛應(yīng)用,對(duì)于該類橋型的設(shè)計(jì)施工研究有了新的要求。為了解決工程背景長(zhǎng)沙湘府路湘江大橋施工的實(shí)際問(wèn)題,本文圍繞剛構(gòu)—連續(xù)組合梁橋的仿真分析、0#塊應(yīng)力分析、最佳合攏方案確定等施工控制關(guān)鍵問(wèn)題展開(kāi)研究,本文主要工作及成果如下：(1)應(yīng)用Midas/Civil軟件以及平面結(jié)構(gòu)分析程序“CSU混凝土橋梁安全分析與控制系統(tǒng)V1.0(簡(jiǎn)稱BR-CAL-Z)"對(duì)全橋進(jìn)行仿真計(jì)算分析,獲得了湘府路大橋在施工過(guò)程中位移、內(nèi)力、應(yīng)力的變化規(guī)律、分布情況。結(jié)果表明,各截面內(nèi)力、應(yīng)力均在控制范圍內(nèi)。(2)應(yīng)用ANSYS建立0#塊空間有限元模型,對(duì)主墩主梁0號(hào)塊進(jìn)行應(yīng)力計(jì)算,分析主橋箱梁0#塊裂紋產(chǎn)生原因,研究了防裂的對(duì)策。(3)對(duì)剛構(gòu)—連續(xù)組合梁橋的合攏方式進(jìn)行論述及對(duì)比研究,分析了不同合攏順序?qū)Y(jié)構(gòu)的影響,得出了最佳的合攏順序,同時(shí)通過(guò)對(duì)合攏時(shí)施加頂推力大小進(jìn)行比較分析,得出合理大小的頂推力,該頂推力能抵消來(lái)自合攏溫差和橋梁后期混凝土收縮徐變對(duì)主墩的影響,改善主墩的受力。(4)簡(jiǎn)述了湘府路湘江大橋的施工監(jiān)控方案,對(duì)比分析了實(shí)測(cè)結(jié)果與理論計(jì)算結(jié)果,指導(dǎo)了本橋的施工控制。
[Abstract]:Rigid-frame-continuous composite beam bridge is a kind of bridge with rapid development nowadays, and it is widely used with this kind of bridge. In order to solve the practical problems in the construction of Xiangjiang Bridge in Changsha Xiangfu Road, this paper focuses on the simulation analysis of rigid frame-continuous composite beam bridge. The key problems of construction control, such as stress analysis of 0# block and determination of optimal closure scheme, are studied. The main work and results of this paper are as follows: (1) the application of Midas/Civil software and plane structure analysis program "CSU concrete bridge safety analysis and control system V1.0" The whole bridge is simulated and analyzed by BR-CAL-Z. The variation law and distribution of displacement, internal force and stress of Xiangfu Road Bridge during construction are obtained. The results show that the internal forces of each section are different. The stress is within the control range. (2) the finite element model of 0# block is established by using ANSYS. The stress of block 0 of main pier is calculated, and the cause of cracks in box girder of main bridge is analyzed. The paper discusses and compares the closing mode of rigid frame-continuous composite beam bridge, analyzes the influence of different closure sequence on the structure, and obtains the best closure order. At the same time, through the comparative analysis of the magnitude of the top thrust applied in closing, the reasonable size of the top thrust is obtained, which can counteract the influence of the temperature difference of closure and the shrinkage and creep of concrete on the main pier in the later stage of bridge closure. The construction monitoring scheme of Xiangjiang River Bridge on Xiangfu Road is briefly described, the measured results and theoretical calculation results are compared and analyzed, and the construction control of the bridge is guided.
【學(xué)位授予單位】：長(zhǎng)沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U445.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 房衛(wèi)民,張世霖,萬(wàn)科峰;大跨徑剛構(gòu)——連續(xù)組合體系梁式橋五跨一次合龍工藝[J];中南公路工程;1995年01期

相關(guān)碩士學(xué)位論文 前2條

1 杜細(xì)春;大跨PC剛構(gòu)—連續(xù)組合梁橋合攏技術(shù)研究[D];武漢理工大學(xué);2006年

2 張新志;連續(xù)剛構(gòu)橋腹板及頂板裂縫成因分析[D];重慶交通大學(xué);2008年

，

本文編號(hào)：1374709