【摘要】：預(yù)應(yīng)力混凝土梁橋作為交通建設(shè)中必不可少的重要組成部分,得到了迅速展。在40-200米跨徑范圍內(nèi),無論是從結(jié)構(gòu)受力特性還是經(jīng)濟(jì)性角度考慮,預(yù)應(yīng)力混凝土連續(xù)梁橋常常成為較理想的橋型。因此,對預(yù)應(yīng)力混凝土連續(xù)梁橋的設(shè)計施工關(guān)鍵技術(shù)研究也顯得尤為重要。本文針對預(yù)應(yīng)力混凝土連續(xù)梁橋(1×12.5+5×20m)的設(shè)計和施工關(guān)鍵技術(shù)進(jìn)行研究,在目前的施工技術(shù)和研究經(jīng)驗的基礎(chǔ)上,進(jìn)一步研究了預(yù)應(yīng)力混凝土連續(xù)梁橋上部結(jié)構(gòu)的施工技術(shù)及連續(xù)梁橋施工技術(shù)中的一些問題,并進(jìn)行計算分析。主要研究工作如下:1、論述了預(yù)應(yīng)力混凝土連續(xù)梁橋的國內(nèi)外發(fā)展現(xiàn)狀。從必要性和重要性兩個角度論述施工控制理論的實際意義。并展現(xiàn)了本論文需要研究的主要內(nèi)容、預(yù)應(yīng)力混凝土梁橋設(shè)計計算理論及分析方法。2、從內(nèi)容,方法,結(jié)構(gòu)分析以及施工當(dāng)中的難點關(guān)鍵點研究預(yù)應(yīng)力混凝土連續(xù)梁施工控制理論;在眾多影響施工控制效果的因素中綜合考慮能使橋梁偏離理想狀態(tài)設(shè)計的因素,能更好的指導(dǎo)施工。3、從實際施工角度詳細(xì)介紹并分析了本工程的特點。主要包括:橋梁概況、主要工程數(shù)量、設(shè)計采用的技術(shù)標(biāo)準(zhǔn)、技術(shù)條件、主要材料、箱梁結(jié)構(gòu)設(shè)計、施工要點等,并提出施工可能遇見的問題及相應(yīng)的解決方案。詳細(xì)介紹了該工程的施工組織設(shè)計,包括人員、材料、機(jī)械等具體的安排,預(yù)制箱梁及空心板的施工工藝及安全質(zhì)量保證措施。4、根據(jù)現(xiàn)有設(shè)計規(guī)范和經(jīng)驗擬定預(yù)應(yīng)力混凝土連續(xù)梁橋設(shè)計參數(shù),利用有限元分析軟件Midas Civil建立計算模型,計算分析全橋的內(nèi)力與變形情況,包括懸臂施工階段時各T構(gòu)內(nèi)力和撓度變化情況。最后通過建立有限元分析模型,進(jìn)行了施工全過程仿真模擬計算分析,研究了預(yù)應(yīng)力混凝土梁橋施工過程中最不利受力情形和整體受力狀態(tài)。
[Abstract]:As an essential part of traffic construction, prestressed concrete beam bridge has been developed rapidly. In the span range of 40-200 meters, the prestressed concrete continuous beam bridge is often an ideal bridge type, whether from the point of view of the structural mechanical characteristics or the economy. Therefore, it is very important to study the key technology of design and construction of prestressed concrete continuous beam bridge. In this paper, the key technology of design and construction of prestressed concrete continuous beam bridge (1 脳 12.5 5 脳 20 m) is studied. The construction technology of the superstructure of the prestressed concrete continuous beam bridge and some problems in the construction technology of the continuous beam bridge are further studied, and the calculation and analysis are carried out. The main research work is as follows: 1. The development of prestressed concrete continuous beam bridge at home and abroad is discussed. This paper discusses the practical significance of construction control theory from the point of view of necessity and importance. It also shows the main contents of this paper, the design and calculation theory and analysis method of prestressed concrete beam bridge. Study on the Construction Control Theory of Prestressed concrete continuous Beam, considering the factors that can make the bridge deviate from the ideal state design among the many factors that affect the construction control effect. Can better guide the construction. 3, from the point of view of actual construction detailed introduction and analysis of the characteristics of the project. It mainly includes: general situation of bridge, quantity of main project, technical standard, technical condition, main material, structure design of box girder, construction essentials and so on, and puts forward the problems that may be encountered in construction and corresponding solutions. The construction organization design of the project is introduced in detail, including the concrete arrangement of personnel, materials, machinery and so on. The construction technology and safety quality assurance measures of prefabricated box girder and hollow slab. According to the existing design code and experience, the design parameters of prestressed concrete continuous beam bridge are worked out, and the calculation model is established by using the finite element analysis software Midas Civil. The internal force and deformation of the whole bridge are calculated and analyzed, including the changes of each T-structure internal force and deflection in the cantilever construction stage. At last, the finite element analysis model is established, and the simulation and calculation of the whole construction process are carried out, and the most disadvantageous stress situation and the whole stress state in the construction process of prestressed concrete beam bridge are studied.
【學(xué)位授予單位】：湖北工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U445.4

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