鋼混外傾斜拉橋塔柱施工技術(shù)研究
本文選題:斜拉索 + 混合結(jié)合斜塔。 參考:《重慶交通大學(xué)》2015年碩士論文
【摘要】:隨著各種橋梁技術(shù)的快速發(fā)展,鋼混結(jié)合結(jié)構(gòu)在橋梁建設(shè)中也被廣泛應(yīng)用,鋼混結(jié)合結(jié)構(gòu)優(yōu)點(diǎn)有:適合跨度大、自身抗扭剛度大、材料強(qiáng)度高、減輕結(jié)構(gòu)自重、加工便利、整體性好、外型輕盈美觀、施工周期短、對(duì)施工區(qū)域周圍的環(huán)境影響較小等優(yōu)點(diǎn)。與混凝土結(jié)構(gòu)相對(duì)比,鋼混結(jié)合結(jié)構(gòu)橋梁能有效減輕橋梁結(jié)構(gòu)自重。隨著國(guó)內(nèi)交通業(yè)的發(fā)展,鋼混結(jié)構(gòu)橋梁在建設(shè)實(shí)施過(guò)程中的推廣將得到普遍應(yīng)用。鋼錨箱外包混凝土外傾塔柱在應(yīng)用過(guò)程中較少,本論文結(jié)合重慶嘉悅大橋施工實(shí)踐,主要對(duì)鋼錨箱加工,施工安裝定位控制,塔柱施工工藝、外傾塔柱施工控制以及外傾塔柱模板穩(wěn)定計(jì)算等施工和技術(shù)控制,采取理論計(jì)算與實(shí)際結(jié)合的方式,安全簡(jiǎn)便的實(shí)現(xiàn)鋼結(jié)構(gòu)與混凝土結(jié)構(gòu)混合斜塔施工,對(duì)該體系本文著重介紹了整個(gè)混合結(jié)構(gòu)斜塔關(guān)鍵技術(shù)和施工工藝,以便類似工程予以借鑒。為明確本工程在施工階段實(shí)際受力情況,采用工程分析軟件MIDAS,通過(guò)建模計(jì)算,分析梁體的各項(xiàng)受力性能以及變形情況,并對(duì)結(jié)果進(jìn)行分析,查看是否滿足相應(yīng)要求,以保證工程質(zhì)量和安全。同時(shí)在工程完成后,及時(shí)進(jìn)行橋梁靜動(dòng)載試驗(yàn),通過(guò)測(cè)量橋梁在規(guī)范中規(guī)定的相應(yīng)動(dòng)載作用下的應(yīng)力應(yīng)變和撓曲變形情況符合規(guī)范要求。鋼混結(jié)構(gòu)作為橋梁建設(shè)中的主要受力結(jié)構(gòu),其各項(xiàng)技術(shù)優(yōu)勢(shì)不斷被發(fā)掘,為橋梁事業(yè)的發(fā)展開辟了新的發(fā)展空間,它的出現(xiàn)讓橋梁的建設(shè)更靠近了“安全、經(jīng)濟(jì)、使用、美觀”的目標(biāo),我們作為未來(lái)橋梁事業(yè)的主力軍,我們應(yīng)該充分認(rèn)識(shí)到鋼混結(jié)構(gòu)的各項(xiàng)優(yōu)勢(shì),去創(chuàng)造橋梁建設(shè)的新成就。本文的研究結(jié)果對(duì)促進(jìn)鋼錨箱制作與安裝技術(shù)的理論完善化、實(shí)踐普遍化,同時(shí)可為今后同樣形式橋梁的施工積累經(jīng)驗(yàn),豐富橋梁施工的方式。
[Abstract]:With the rapid development of various bridge technology, steel-concrete composite structure is also widely used in bridge construction. The advantages of steel-concrete composite structure are: suitable for large span, large torsional stiffness, high material strength, reduced structural weight, easy processing. It has the advantages of good integrity, light appearance, short construction period and less influence on the surrounding environment of the construction area. Compared with concrete structure, steel-concrete composite bridge can effectively reduce the weight of bridge structure. With the development of domestic transportation industry, the promotion of steel-concrete structure bridges in the process of construction and implementation will be widely used. The external concrete tilting tower column of steel anchor box is less in the application process. This paper combines the construction practice of Chongqing Jiayue Bridge, mainly processes the steel anchor box, the construction installation position control, the tower column construction technology, The construction and technical control of external tilting column construction control and external tilting column formwork stability calculation are adopted to realize the construction of mixed inclined tower of steel structure and concrete structure safely and easily by combining theoretical calculation with practice. This paper mainly introduces the key technology and construction technology of the mixed structure inclined tower, so that similar engineering can be used for reference. In order to make clear the actual force situation of the project in the construction stage, adopt the engineering analysis software midas, through modeling and calculation, analyze the various mechanical properties and deformation of the beam body, and analyze the result, see whether meet the corresponding requirements. To ensure the quality and safety of the project. At the same time, after the completion of the project, the bridge static and dynamic load tests were carried out in time, and the stress, strain and flexural deformation of the bridge under the corresponding dynamic loads specified in the code were measured according to the requirements of the code. As the main force structure in bridge construction, steel-concrete structure has been excavated continuously, which has opened up a new development space for the development of bridge, and its appearance has brought the bridge construction closer to "safety, economy and use." As the main force of bridge construction in the future, we should fully recognize the advantages of steel-concrete structure and create new achievements in bridge construction. The results of this paper can promote the perfection of theory and practice of steel anchor box making and installation technology, at the same time, it can accumulate experience for the same form of bridge construction in the future and enrich the way of bridge construction.
【學(xué)位授予單位】:重慶交通大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:U445.4;U448.27
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