本文選題：高速鐵路連續(xù)梁橋 + 施工分析�。� 參考：《重慶交通大學(xué)》2015年碩士論文

【摘要】：隨著高強(qiáng)度材料和懸臂灌注等施工工藝逐漸廣泛地運(yùn)用于橋梁建設(shè)領(lǐng)域,預(yù)應(yīng)力混凝土連續(xù)梁橋成為普遍常見的橋梁類型。尤其是其行車平穩(wěn)舒適,抗震強(qiáng)度高等優(yōu)點(diǎn),在越來越多的高速鐵路建設(shè)中,成為普遍采用的橋梁形式。隨著橋梁分析軟件的運(yùn)用,通過仿真模型的建立,可以得出實(shí)際橋梁結(jié)構(gòu)在不同施工階段的內(nèi)力和撓度等重要參數(shù)。但是,在橋梁施工過程中,會(huì)因?yàn)楦鞣N因素的影響,使得實(shí)際數(shù)值與理論結(jié)果存在差異,這時(shí)就需要采用線形和應(yīng)力等控制手段,讓最終的成橋狀態(tài)滿足要求。本文結(jié)合一條在建的高速鐵路連續(xù)梁橋,運(yùn)用MIDAS Civil和MIDAS FEA橋梁分析軟件,對橋梁進(jìn)行整體和局部分析,得出相應(yīng)結(jié)論,并將之用來指導(dǎo)具體的施工過程。論文包含以下內(nèi)容:①介紹高速鐵路連續(xù)梁橋的發(fā)展史、橋型特征,高速鐵路連續(xù)梁橋施工分析理論的研究現(xiàn)狀、基本內(nèi)容,以及高速鐵路連續(xù)梁橋與公路連續(xù)梁橋的差異;②針對具體的工程實(shí)例,對整個(gè)橋梁的施工階段進(jìn)行仿真分析,考慮不同荷載的組合作用,得出關(guān)鍵施工階段和關(guān)鍵截面的內(nèi)力和撓度,并與建設(shè)過程中的實(shí)際測量數(shù)據(jù)進(jìn)行比較分析,對橋梁施工中的線形和應(yīng)力實(shí)施控制。③分別對零號塊和掛籃結(jié)構(gòu)進(jìn)行局部分析,驗(yàn)算零號塊在最大懸臂階段的內(nèi)力、闡述零號塊常見的裂縫形態(tài)、成因,以及計(jì)算掛籃在不同荷載組合作用下的強(qiáng)度、剛度和穩(wěn)定性。論文得出如下結(jié)論:①高鐵連續(xù)梁橋與公路連續(xù)梁橋在材料用量、截面尺寸和結(jié)構(gòu)剛度等方面存在差異;②運(yùn)用仿真模型模擬連續(xù)梁橋的不同施工階段,得出的數(shù)據(jù)滿足強(qiáng)度、剛度、穩(wěn)定的要求,并對整個(gè)施工過程的線形和應(yīng)力控制具有很好的指導(dǎo)作用;③運(yùn)用仿真模型模擬零號塊,驗(yàn)算出該梁段在實(shí)際施工過程中的受力能滿足要求,并且提出了零號塊不同裂縫病害的處理方法;④建立掛籃結(jié)構(gòu)的仿真模型,考慮不同荷載組合的影響,各部件的強(qiáng)度、剛度和穩(wěn)定性均能滿足所有要求。
[Abstract]:With the application of high strength material and cantilever pouring technology in the field of bridge construction, prestressed concrete continuous beam bridge has become a common type of bridge. Especially, it has the advantages of smooth and comfortable driving, high seismic intensity and so on. It has become a widely used bridge form in the construction of more and more high-speed railway. With the application of bridge analysis software and the establishment of simulation model, important parameters such as internal force and deflection of actual bridge structure in different construction stages can be obtained. However, in the process of bridge construction, due to the influence of various factors, there are differences between the actual value and the theoretical results. At this time, it is necessary to use linear and stress control methods to make the final state of the bridge meet the requirements. Combined with a continuous beam bridge of high speed railway under construction, the whole and local analysis of the bridge is carried out by using MIDAS Civil and MIDAS FEA bridge analysis software, and the corresponding conclusions are drawn and used to guide the concrete construction process. The paper includes the following contents: 1. Introduce the history of the high-speed railway continuous beam bridge, the bridge type characteristics, the research status quo of the high-speed railway continuous beam bridge construction analysis theory, the basic content, and the difference between the high-speed railway continuous beam bridge and the highway continuous beam bridge. 2 according to the concrete engineering example, the whole bridge construction stage is simulated and analyzed, considering the combination of different loads, the internal force and deflection of the key construction stage and the key section are obtained. And compared with the actual measurement data in the construction process, the linear shape and stress of the bridge construction are controlled by .3 to analyze the zero block and the hanging basket structure, respectively, and to check the internal force of the zero block in the maximum cantilever stage. This paper expounds the common crack form and causes of the zero block, and calculates the strength, stiffness and stability of the hanging basket under different load combinations. The conclusions are as follows: (1) there are differences in material consumption, cross-section size and structural stiffness between continuous beam bridge and highway continuous beam bridge. Secondly, the simulation model is used to simulate the different construction stages of continuous beam bridge, and the obtained data meet the intensity. The requirements of stiffness and stability, and the linear and stress control of the whole construction process have a good guidance role. The simulation model is used to simulate the zero block, and it is verified that the stress of the beam section in the actual construction process can meet the requirements. The method to deal with different crack diseases in block zero is put forward. The simulation model of hanging basket structure is established. Considering the influence of different load combinations, the strength, stiffness and stability of each component can meet all the requirements.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U445.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 李愛武;;連續(xù)梁菱形掛籃設(shè)計(jì)思考[J];山西建筑;2012年27期

2 肖杰;陶興;馮克巖;;懸臂施工連續(xù)梁橋0號塊的空間應(yīng)力分析[J];中國市政工程;2009年02期

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本文編號：1915341