本文關(guān)鍵詞：獨(dú)塔不等跨斜拉橋施工監(jiān)控和受力分析　出處：《北京交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 斜拉橋 施工監(jiān)控 誤差分析 合理施工狀態(tài) 施工索力 參數(shù)分析

【摘要】：在斜拉橋的建造過程中,設(shè)計(jì)與施工密切相關(guān),不同的施工方法會(huì)導(dǎo)致不同的成橋狀態(tài),施工階段是斜拉橋建造的關(guān)鍵環(huán)節(jié)之一,所以對斜拉橋進(jìn)行施工監(jiān)控是必須的。本文以天水市山水1號斜拉橋?yàn)楸尘?主要研究內(nèi)容和成果如下： (1)首先對斜拉橋施工監(jiān)控的方法進(jìn)行了對比分析,并提出適合天水市山水1號斜拉橋特點(diǎn)的施工監(jiān)控方案。 (2)應(yīng)用MIDAS CIVIL軟件對斜拉橋的成橋狀態(tài)和每個(gè)施工階段進(jìn)行了詳細(xì)的計(jì)算與分析,并將得到的成橋階段和各個(gè)施工階段的內(nèi)力和變形與實(shí)際監(jiān)測的數(shù)據(jù)進(jìn)行對比,并分析誤差產(chǎn)生的原因。雖然本橋仍在施工過程中,但已施工的四個(gè)工況中,計(jì)算的理論數(shù)據(jù)與實(shí)際監(jiān)測的數(shù)據(jù)吻合較好。 (3)理論上,合理成橋狀態(tài)與施工工序都已確定的情況下,會(huì)存在唯一的一組施工索力,可以使施工成橋狀態(tài)與設(shè)計(jì)的合理成橋狀態(tài)完全吻合。本文以依托橋?yàn)楸尘?對倒拆法、倒拆-正裝迭代法和正裝分析差值優(yōu)化法這三種確定合理施工索力的方法進(jìn)行了對比分析,并提出一種以倒拆法和基于差值法的正裝分析相結(jié)合的方法來確定這組合理施工索力。 (4)斜拉橋從施工到成橋的過程中,會(huì)受到梁段自重、結(jié)構(gòu)剛度和斜拉索索力、臨時(shí)施工荷載、混凝土收縮徐變、溫度以及預(yù)應(yīng)力等參數(shù)的影響,然而不同的參數(shù)對結(jié)構(gòu)受力狀態(tài)的影響程度不同。本文借鑒其它斜拉橋施工的經(jīng)驗(yàn),并結(jié)合本橋?qū)嶋H情況,對梁段自重、臨時(shí)施工荷載、結(jié)構(gòu)剛度和斜拉索索力這四個(gè)參數(shù)進(jìn)行了敏感性分析；根據(jù)分析結(jié)果,建議在施工中嚴(yán)格控制梁段自重和斜拉索索力。
[Abstract]:In the construction process of cable-stayed bridge, design and construction are closely related, different construction methods will lead to different completion of the bridge, the construction stage is one of the key links in the construction of cable-stayed bridge. Therefore, it is necessary to monitor the construction of cable-stayed bridge. This paper takes Shanshui No. 1 cable-stayed bridge in Tianshui as the background, the main research contents and results are as follows: Firstly, the construction monitoring methods of cable-stayed bridge are compared and analyzed, and the construction monitoring scheme suitable for the characteristics of No. 1 cable-stayed bridge in Tianshui City is put forward. 2) the state of cable-stayed bridge and each construction stage are calculated and analyzed in detail by using MIDAS CIVIL software. The internal force and deformation of the bridge and each construction stage are compared with the actual monitoring data, and the causes of the errors are analyzed. Although the bridge is still in the construction process, it has been constructed in four working conditions. The calculated theoretical data are in good agreement with the actual monitoring data. In theory, there is only one group of construction cable forces when the reasonable bridge state and construction procedure have been determined. It is possible to make the state of the bridge completed by the construction completely consistent with the reasonable state of the bridge design. This paper takes the backing bridge as the background and the reverse demolition method. The three methods of determining the rational construction cable force are compared and analyzed, that is, the inverted disassembly and the normal load analysis difference optimization method. A method is proposed to determine the rational construction cable force by the combination of reverse disassembly method and normal load analysis based on difference method. During the process from construction to completion of the cable-stayed bridge, it will be affected by the parameters such as beam deadweight, structural stiffness and cable force, temporary construction load, concrete shrinkage and creep, temperature and prestress and so on. However, the influence of different parameters on the stress state of the structure is different. This paper draws lessons from the construction experience of other cable-stayed bridges, combined with the actual situation of the bridge, to the beam section deadweight, temporary construction load. The sensitivity of the four parameters, stiffness and cable force, is analyzed. According to the analysis results, it is suggested that the deadweight of beam section and cable force should be strictly controlled in construction.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U448.27

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李忠三;雷俊卿;顏東煌;;大跨度混合梁斜拉橋參數(shù)敏感性分析[J];北京交通大學(xué)學(xué)報(bào);2012年01期

2 李熠;顏東煌;李學(xué)文;;混凝土斜拉橋合理成橋狀態(tài)研究[J];重慶交通大學(xué)學(xué)報(bào)(自然科學(xué)版);2008年06期

3 張錫祥，顧安邦;復(fù)合材料用于大跨斜拉橋發(fā)展展望[J];重慶交通學(xué)院學(xué)報(bào);1995年01期

4 陳德成,魏震松,曲廣吉,朱安文,肖益芳;有限元模型修正技術(shù)的工程應(yīng)用[J];中國工程科學(xué);2001年10期

5 辛克貴,馮仲;大跨度斜拉橋的施工非線性倒拆分析[J];工程力學(xué);2004年05期

6 鄧新安;斜拉橋的施工控制[J];中國港灣建設(shè);2001年05期

7 劉建,李傳習(xí),劉揚(yáng),夏桂云,張建仁;岳陽洞庭湖大橋三塔斜拉橋施工控制[J];中外公路;2005年04期

8 陳明憲;;斜拉橋的發(fā)展與展望[J];中外公路;2006年04期

9 吳國勝;卜一之;;基于最小二乘法的參數(shù)識別方法在斜拉橋施工控制中的應(yīng)用[J];中外公路;2008年06期

10 許俊,鄭信光,陳云峰;影響P.C.斜拉橋施工控制目標(biāo)的因素[J];結(jié)構(gòu)工程師;2000年01期

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