【摘要】：大跨徑橋梁多以纜索作為承重結(jié)構(gòu)，橋型主要有：懸索橋和斜拉橋。由于懸索橋和斜拉橋都有各自明顯的優(yōu)缺點(diǎn)，于是橋梁工程師探索性結(jié)合以上兩種橋型結(jié)構(gòu)的優(yōu)點(diǎn)設(shè)計(jì)出一種新的橋型：自錨式懸索-斜拉協(xié)作體系結(jié)構(gòu)橋梁。相應(yīng)地，該新橋型也不可避免的存在在斜拉橋中需要更換拉索的問題。該橋型為一種全新的橋型，結(jié)構(gòu)體系繁瑣，內(nèi)力變化復(fù)雜，影響因素眾多。而換索工程本身就是一復(fù)雜的過程，往往涉及到設(shè)計(jì)、施工和監(jiān)控等各種因素，任何一個(gè)環(huán)節(jié)若出現(xiàn)失誤，都將導(dǎo)致?lián)Q索工程失敗。 本論文以貴州貴遵公路烏江大橋維修加固工程為背景，針對自錨式懸索—斜拉協(xié)作體系橋梁的更換拉索施工監(jiān)控進(jìn)行了研究，通過有限元分析對比，分析了索力重新分布后對橋梁構(gòu)件等的影響。主要研究內(nèi)容如下： 1）通過對自錨式懸索—斜拉協(xié)作體系橋梁斜拉索更換施工數(shù)值進(jìn)行監(jiān)控和分析，并指出了當(dāng)前換索理論與方法存在的問題。 2）以斜拉索更換基本理論為指導(dǎo)，采用Midas/Ansys通用有限元計(jì)算程序，針對烏江大橋建立了有限元模型，并模擬實(shí)際換索工況，對烏江大橋更換斜拉索工況進(jìn)行了結(jié)構(gòu)分析。 3）結(jié)合烏江大橋換索工程實(shí)際，借助有限元分析程序，通過將有限元分析結(jié)果與實(shí)際工程測量結(jié)果對比分析的方法，研究了斜拉橋斷索后索力重新分布情況以及對主梁和塔等構(gòu)件的影響，，分析了橋梁在換索過程中的結(jié)構(gòu)整體受力情況、變形情況及安全狀況。
[Abstract]:Long-span bridges take cables as load-bearing structures. The main types of bridges are suspension bridges and cable-stayed bridges. Because the suspension bridge and the cable-stayed bridge have their own obvious advantages and disadvantages, the bridge engineers have designed a new bridge type: self-anchored suspension cable-stayed system bridge combining the advantages of the above two kinds of bridge structure. Accordingly, this new bridge type also inevitably exists in the cable-stayed bridge need to replace the cable problem. The bridge is a new type of bridge. The structure system is complicated, the internal force change is complex, and there are many influencing factors. The cable exchange project itself is a complex process, often involving design, construction and monitoring and other factors, any link if there is a fault, will lead to the failure of the cable exchange project. Based on the maintenance and reinforcement project of Wujiang Bridge on Guizun Highway in Guizhou Province, this paper studies the monitoring and control of replacement cable construction of self-anchored suspension cable-stayed cooperative system bridge, and compares it with finite element analysis. The influence of cable force redistribution on bridge components is analyzed. The main research contents are as follows: 1) through monitoring and analyzing the construction value of cable replacement of self-anchored suspension cable-stayed cooperative system bridge, The problems in the theory and method of cable replacement are pointed out. 2) under the guidance of the basic theory of cable replacement, the finite element model of Wujiang Bridge is established by using Midas/Ansys general finite element calculation program, and the actual cable changing condition is simulated. This paper analyzes the structure of Wujiang Bridge under the condition of replacing stayed cables. 3) combining with the actual project of Wujiang Bridge, with the aid of finite element analysis program, the results of finite element analysis are compared with the results of actual engineering measurement. The redistribution of cable force after cable break of cable-stayed bridge and its influence on the main beam and tower are studied, and the stress, deformation and safety of the bridge in the process of cable exchange are analyzed.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：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10條

1 張哲,張洪金,邱文亮;混凝土自錨式懸索橋模型試驗(yàn)研究[J];大連理工大學(xué)學(xué)報(bào);2005年04期

2 張哲;王會(huì)利;黃才良;陳軍;杜高明;;自錨式斜拉—懸索協(xié)作體系橋梁設(shè)計(jì)與分析[J];公路;2006年07期

3 閆維明;張志;陳彥江;楊小森;;大跨度斜拉橋施工過程中的索力控制方法[J];土木建筑與環(huán)境工程;2010年05期

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

5 王伯惠;斜拉—懸索協(xié)作體系橋[J];遼寧省交通高等�？茖W(xué)校學(xué)報(bào);2000年03期

6 周上君;;斜拉橋非線性靜力分析[J];橋梁建設(shè);1982年04期

7 李富文,沈銳利;懸索橋的非線性靜力分析[J];橋梁建設(shè);1989年01期

8 許俊,史家鈞;濟(jì)南黃河公路大橋主橋換索過程的索力監(jiān)測[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);1998年04期

9 戴利民;協(xié)作體系斜拉橋的結(jié)構(gòu)分析[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);2000年01期

10 鐘萬勰,劉元芳,紀(jì)崢;斜拉橋施工中的張拉控制和索力調(diào)整[J];土木工程學(xué)報(bào);1992年03期

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