本文關(guān)鍵詞： 混凝土斜拉橋 體系參數(shù) 力學(xué)性能 施工誤差 體系優(yōu)化　出處：《浙江大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：本文以浙江省溫州市大門大橋?yàn)楣こ瘫尘?探討了雙塔雙索面PC梁斜拉橋體系參數(shù)對結(jié)構(gòu)力學(xué)性能的影響,供設(shè)計施工方面參考。溫州市大門大橋是跨徑組合135+316+135m的混凝土斜拉橋。本文采用有限元分析的方法,借助MIDAS軟件建立空間桿系模型,通過變換相關(guān)參數(shù),提取橋梁受力變形響應(yīng),進(jìn)而分析變化趨勢,主要做了以下工作： (1)通過對大門大橋的主梁、主塔、斜拉索、下部結(jié)構(gòu)和附屬工程等設(shè)計及施工思路的介紹,了解了大門大橋的基本設(shè)計方法。 (2)通過對大門大橋成橋階段主梁、主塔的內(nèi)力應(yīng)力以及斜拉索索力進(jìn)行計算及分析,明確了主梁、主塔在施工階段調(diào)索后的合理內(nèi)力分布形態(tài)以及合理索力的分布特征,驗(yàn)證了結(jié)構(gòu)體系的合理性,以保障體系的順利實(shí)施。 (3)混凝土梁段自重誤差、索力誤差以及預(yù)應(yīng)力誤差對斜拉橋成橋狀態(tài)影響較大,利用有限元分析軟件對大門大橋各實(shí)施偏差情況下的結(jié)構(gòu)響應(yīng)進(jìn)行量化分析,獲得了結(jié)構(gòu)位移響應(yīng)與應(yīng)力響應(yīng)對誤差的敏感性特征。 (4)塔梁連接方式、邊中跨比、塔高、塔剛度及主梁剛度是該橋重要的體系參數(shù),通過改變體系參數(shù)對大門大橋進(jìn)行有限元分析,探討關(guān)鍵體系參數(shù)改變對結(jié)構(gòu)活載效應(yīng)及溫度效應(yīng)產(chǎn)生的影響,提出體系參數(shù)的優(yōu)化方向。
[Abstract]:Based on the engineering background of the Gate Bridge in Wenzhou City, Zhejiang Province, this paper discusses the influence of the system parameters of the PC girder cable-stayed bridge with double tower and double cable plane on the structural mechanical properties. The bridge is a concrete cable-stayed bridge with a span combination of 135,316 135m. In this paper, the spatial bar system model is established with the help of MIDAS software and the finite element analysis method is adopted. In order to extract the deformation response of bridge, and then analyze the change trend, the main work is as follows:. This paper introduces the design and construction ideas of the main girder, main tower, stay cable, substructure and subsidiary works of the main gate bridge, and understands the basic design method of the gate bridge. 2) through the calculation and analysis of the internal force stress of the main tower and the cable force of the cable-stayed cable, the reasonable internal force distribution pattern and the reasonable cable force distribution characteristics of the main girder and the main tower after the cable adjustment in the construction stage are determined. The rationality of the structure system is verified to ensure the smooth implementation of the system. 3) the deadweight error, cable force error and prestress error of concrete beam section have great influence on the state of the cable-stayed bridge. The structural response of the bridge is analyzed quantitatively by using the finite element analysis software. The sensitivity characteristics of displacement response and stress response to error are obtained. 4) the connection mode of tower beam, the ratio of side to middle span, tower height, tower stiffness and main beam stiffness are important system parameters of the bridge. The finite element analysis of the gate bridge is carried out by changing the system parameters. The influence of the change of key system parameters on the live load effect and temperature effect of the structure is discussed, and the optimization direction of the system parameters is put forward.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U448.27

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張文獻(xiàn);王廣濤;仝培周;穆雅楠;;斜拉橋主塔塔型及塔高的優(yōu)化分析[J];東北大學(xué)學(xué)報(自然科學(xué)版);2011年12期

2 上官萍，房貞政，卓衛(wèi)東;塔梁墩固結(jié)斜拉橋結(jié)構(gòu)受力分析[J];福州大學(xué)學(xué)報(自然科學(xué)版);1999年03期

3 鄭一峰,黃僑,張連振;部分斜拉橋結(jié)構(gòu)體系分析[J];公路;2005年06期

4 武芳文;趙雷;;大跨度斜拉橋施工力學(xué)行為參數(shù)敏感性分析[J];蘭州理工大學(xué)學(xué)報;2009年06期

5 楊琪,李喬;斜拉橋的靜力行為影響參數(shù)及其靜力分析[J];國外橋梁;1999年04期

6 王立峰;孫永存;李巍;;綏芬河斜拉橋結(jié)構(gòu)參數(shù)敏感性分析[J];世界橋梁;2007年02期

7 陳曄,郭圣棟;斜拉橋結(jié)構(gòu)仿真分析[J];華東交通大學(xué)學(xué)報;2005年04期

8 魏紅一,胡世德,范立礎(chǔ);對斜拉橋總體設(shè)計參數(shù)的討論[J];結(jié)構(gòu)工程師;2003年03期

9 肖汝誠,項(xiàng)海帆;斜拉橋索力優(yōu)化及其工程應(yīng)用[J];計算力學(xué)學(xué)報;1998年01期

10 崔圣愛;祝兵;黃志堂;;斜拉橋塔柱截面尺寸優(yōu)化設(shè)計[J];橋梁建設(shè);2006年04期

，

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