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

【摘要】：現(xiàn)代交通運輸業(yè)發(fā)展迅速,為滿足人們出行方便和節(jié)約時間,許多高鐵項目和高速公路項目應運而生。但這些項目不可避免會遇到一些河流及復雜地形需要跨越,大量特殊的橋梁則需要建設。連續(xù)剛構橋以其強度高、結構整體受力性能好、施工迅速、抗震性能好等優(yōu)點備受青睞。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,廣泛應用于連續(xù)剛構橋中。但連續(xù)剛構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)實際成橋狀態(tài)與理論設計狀態(tài)存在偏差的情況。綜上所述,橋梁中施工控制的實施是非常有必要的。本文首先描述了連續(xù)剛構橋的發(fā)展歷程、施工特點、施工方法以及發(fā)展趨勢,又綜合介紹了連續(xù)剛構橋施工控制的發(fā)展、意義、內(nèi)容以及存在的影響因素。并且通過對連續(xù)剛構橋結構計算方法的引入,為連續(xù)剛構橋施工控制在實際工程中的應用奠定了理論基礎。本文隨后以小清河連續(xù)剛構橋的實際工程為研究背景,以連續(xù)剛構橋的高程控制以及應力和溫度監(jiān)測為研究目的,介紹了施工控制在小清河連續(xù)剛構橋實際工程中的具體應用。并且在小清河連續(xù)剛構橋的現(xiàn)場施工之前,通過橋梁設計和分析軟件MIDAS/Civil建立有限元仿真計算模型,為橋梁實際施工控制提供了有力的理論依據(jù)。本文在實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)場復雜環(huán)境的綜合影響,使用了前進分析法對立模標高進行動態(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)。并且實時對橋梁內(nèi)部應力進行監(jiān)測,確保施工安全。最后,本文比較了小清河連續(xù)剛構橋的理論設計值和實際成橋值,可以看出MIDAS/Civil計算模型較為準確,利用前進分析法對高程控制效果良好,橋梁內(nèi)部應力滿足相應要求,整體橋梁施工控制較為成功,可具有參考及應用價值。
[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.
【學位授予單位】：山東大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U445.4;U448.23

【參考文獻】

相關期刊論文 前2條

1 陳素君;高墩大跨連續(xù)剛構橋的設計與施工監(jiān)控[J];公路;2003年03期

2 韓大建,徐郁峰,王衛(wèi)鋒,王衛(wèi)兵;大跨度混凝土斜拉橋主梁應力監(jiān)測中徐變應變的分離[J];橋梁建設;2003年01期

相關碩士學位論文 前1條

1 王鵬;大跨度預應力混凝土連續(xù)剛構橋施工控制研究[D];武漢理工大學;2007年

，

本文編號：2090505