本文選題：連續(xù)剛構(gòu)橋 + 施工控制　； 參考：《山東大學(xué)》2015年碩士論文

【摘要】：現(xiàn)代交通運(yùn)輸業(yè)發(fā)展迅速,為滿足人們出行方便和節(jié)約時(shí)間,許多高鐵項(xiàng)目和高速公路項(xiàng)目應(yīng)運(yùn)而生。但這些項(xiàng)目不可避免會(huì)遇到一些河流及復(fù)雜地形需要跨越,大量特殊的橋梁則需要建設(shè)。連續(xù)剛構(gòu)橋以其強(qiáng)度高、結(jié)構(gòu)整體受力性能好、施工迅速、抗震性能好等優(yōu)點(diǎn)備受青睞。掛籃懸臂施工具有自重較輕、前移和裝拆方便、受力變形較小等優(yōu)勢,廣泛應(yīng)用于連續(xù)剛構(gòu)橋中。但連續(xù)剛構(gòu)橋的懸臂施工中影響因素和不確定因素很多,并且現(xiàn)場施工條件也比較繁雜,很容易出現(xiàn)實(shí)際成橋狀態(tài)與理論設(shè)計(jì)狀態(tài)存在偏差的情況。綜上所述,橋梁中施工控制的實(shí)施是非常有必要的。本文首先描述了連續(xù)剛構(gòu)橋的發(fā)展歷程、施工特點(diǎn)、施工方法以及發(fā)展趨勢,又綜合介紹了連續(xù)剛構(gòu)橋施工控制的發(fā)展、意義、內(nèi)容以及存在的影響因素。并且通過對連續(xù)剛構(gòu)橋結(jié)構(gòu)計(jì)算方法的引入,為連續(xù)剛構(gòu)橋施工控制在實(shí)際工程中的應(yīng)用奠定了理論基礎(chǔ)。本文隨后以小清河連續(xù)剛構(gòu)橋的實(shí)際工程為研究背景,以連續(xù)剛構(gòu)橋的高程控制以及應(yīng)力和溫度監(jiān)測為研究目的,介紹了施工控制在小清河連續(xù)剛構(gòu)橋?qū)嶋H工程中的具體應(yīng)用。并且在小清河連續(xù)剛構(gòu)橋的現(xiàn)場施工之前,通過橋梁設(shè)計(jì)和分析軟件MIDAS/Civil建立有限元仿真計(jì)算模型,為橋梁實(shí)際施工控制提供了有力的理論依據(jù)。本文在實(shí)際施工中分析了施工條件、模型參數(shù)、掛籃變形等影響因素,考慮到施工中存在非線性因素及現(xiàn)場復(fù)雜環(huán)境的綜合影響,使用了前進(jìn)分析法對立模標(biāo)高進(jìn)行動(dòng)態(tài)控制,通過對修正誤差的引入,確保高程偏差控制在合理的范圍內(nèi)。并且實(shí)時(shí)對橋梁內(nèi)部應(yīng)力進(jìn)行監(jiān)測,確保施工安全。最后,本文比較了小清河連續(xù)剛構(gòu)橋的理論設(shè)計(jì)值和實(shí)際成橋值,可以看出MIDAS/Civil計(jì)算模型較為準(zhǔn)確,利用前進(jìn)分析法對高程控制效果良好,橋梁內(nèi)部應(yīng)力滿足相應(yīng)要求,整體橋梁施工控制較為成功,可具有參考及應(yīng)用價(jià)值。
[Abstract]:With the rapid development of modern transportation, many high-speed rail projects and highway projects emerge as the times require in order to meet the convenience of travel and save time. But these projects will inevitably encounter some rivers and complex terrain to cross, a large number of special bridges need to be built. Continuous rigid frame bridge is favored for its high strength, good overall mechanical performance, rapid construction and good seismic performance. The cantilever construction with hanging basket is widely used in continuous rigid frame bridge because of its advantages of light weight, convenient to move forward and install and disassemble, and less deformation. However, there are many influencing factors and uncertain factors in cantilever construction of continuous rigid frame bridge, and the site construction conditions are complicated, so it is easy to appear the deviation between the actual bridge state and the theoretical design state. To sum up, the implementation of bridge construction control is very necessary. This paper first describes the development course, construction characteristics, construction method and development trend of continuous rigid frame bridge, and introduces the development, significance, content and influence factors of construction control of continuous rigid frame bridge. By introducing the calculation method of continuous rigid frame bridge structure, the theoretical foundation of construction control of continuous rigid frame bridge in practical engineering is established. Taking the practical engineering of Xiaoqing River continuous rigid frame bridge as the research background, and taking the elevation control and stress and temperature monitoring of the continuous rigid frame bridge as the research purposes, this paper introduces the concrete application of the construction control in the practical engineering of the Xiaoqing River continuous rigid frame bridge. Before the construction of the continuous rigid frame bridge in Xiaoqing River, the finite element simulation model is established through the bridge design and analysis software Midas / Civil, which provides a powerful theoretical basis for the actual construction control of the bridge. In this paper, the construction conditions, model parameters, hanging basket deformation and other influencing factors are analyzed in actual construction. Considering the comprehensive influence of nonlinear factors in construction and the complex environment on the spot, the forward analysis method is used to dynamically control the elevation of the model. The correction error is introduced to ensure that the height deviation is controlled within a reasonable range. The internal stress of the bridge is monitored in real time to ensure the safety of construction. Finally, this paper compares the theoretical design value with the actual bridge value of Xiaoqing River continuous rigid frame bridge. It can be seen that Midas / Civil calculation model is more accurate, using the forward analysis method to control the elevation is good, and the internal stress of the bridge meets the corresponding requirements. The whole bridge construction control is more successful, can have the reference and the application value.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U445.4;U448.23

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本文編號：2090505