本文選題：連續(xù)剛構(gòu)橋　切入點：溫度荷載　出處：《長安大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著經(jīng)濟的發(fā)展，橋梁作為現(xiàn)代生活中重要的交通生命線工程，其跨徑以及施工要求也在不斷提高。在眾多橋型中，連續(xù)剛構(gòu)橋是使用較多的一種橋型，，因為連續(xù)剛構(gòu)橋不僅跨徑較大，而且施工便利、技術(shù)較為成熟。近年來，隨著連續(xù)剛構(gòu)橋施工技術(shù)的不斷進步，懸臂澆筑成為在實際工程中使用最為廣泛的一種連續(xù)剛構(gòu)橋施工方法。在懸臂施工過程中，由于橋梁結(jié)構(gòu)存在由靜定結(jié)構(gòu)轉(zhuǎn)變?yōu)槌o定結(jié)構(gòu)的過程，因此在施工過程中要注意對橋梁線性、內(nèi)力以及撓度等因素進行施工過程監(jiān)控，以滿足橋梁結(jié)構(gòu)的要求。 隨著連續(xù)剛構(gòu)橋跨徑的不斷增大，溫度變化對橋梁的線形、內(nèi)力以及撓度的影響越來越重要，尤其是日照輻射以及驟降溫差的變化對橋梁結(jié)構(gòu)的影響都是較大的。對于懸臂澆筑的大跨徑連續(xù)剛構(gòu)橋來說，合攏時的溫度變化影響對其是極為重要的。 基于上述原因，本論文以黑城河特大橋為背景，采用MIDAS/CIVIL軟件對其進行仿真分析，本文的主要研究內(nèi)容如下： （1）通過MIDAS/CIVIL軟件對黑城河特大橋進行建模分析，首先對其進行靜力分析，得到不同施工工況下其應(yīng)力應(yīng)變情況。 （2）黑城河特大橋由于地處青海高寒地區(qū)，施工過程中的溫度變化對其施工進度的影響較大，在本文中通過MIDAS/CIVIL軟件對黑城河特大橋的合攏溫度進行計算分析。 （3）對黑城河特大橋進行實際監(jiān)測，并對監(jiān)測數(shù)據(jù)進行分析，驗證監(jiān)控成果的精確度。
[Abstract]:With the development of economy, bridge, as an important traffic lifeline project in modern life, its span and construction requirements are also increasing. Among many bridge types, continuous rigid frame bridge is a kind of bridge used more frequently. Because continuous rigid frame bridge not only has a long span, but also has convenient construction and mature technology. In recent years, with the continuous progress of construction technology of continuous rigid frame bridge, Cantilever pouring has become the most widely used construction method of continuous rigid frame bridge in practical engineering. In the cantilever construction process, the bridge structure is changed from statically indeterminate structure to statically indeterminate structure. Therefore, in order to meet the requirements of bridge structure, it is necessary to monitor the construction process of the factors of bridge linearity, internal force and deflection. With the increasing span of continuous rigid frame bridge, the influence of temperature change on the alignment, internal force and deflection of the bridge becomes more and more important. Especially, the influence of sunshine radiation and temperature difference of sudden drop on bridge structure is great. For cantilever cast long-span continuous rigid frame bridge, the influence of temperature change during closure is very important. Based on the above reasons, this paper takes the Heicheng River Bridge as the background, uses the MIDAS/CIVIL software to carry on the simulation analysis to it, the main research content of this paper is as follows:. 1) the modeling and analysis of Heicheng River Bridge is carried out by MIDAS/CIVIL software. Firstly, the static analysis of the bridge is carried out, and the stress and strain of the bridge under different construction conditions are obtained. The Heicheng River Bridge is located in the alpine region of Qinghai Province. The temperature change during construction has a great influence on the construction progress. In this paper, the closure temperature of the Heicheng River Bridge is calculated and analyzed by MIDAS/CIVIL software. The actual monitoring of the Heicheng River Bridge is carried out, and the monitoring data are analyzed to verify the accuracy of the monitoring results.
【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】：U445.4;U448.23

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