【摘要】：鋼結(jié)構(gòu)橋梁具有跨度大、抗扭剛度大、強度高、自重輕、預(yù)制加工方便、施工周期短、整體性好、外型簡潔美觀、對外部環(huán)境影響小等優(yōu)點。相對于混凝土橋梁,鋼結(jié)構(gòu)橋梁能減少上部結(jié)構(gòu)自重,獲得更大的橋下凈空。隨著交通事業(yè)的發(fā)展,鋼結(jié)構(gòu)橋梁在橋梁建設(shè)中將得到廣泛的推廣與應(yīng)用。本文就福建省泉州市田安大橋上承式梁拱組合鋼結(jié)構(gòu)橋梁施工工藝做了分析研究。大跨度上承式梁拱組合鋼結(jié)構(gòu)具有跨度大、主梁施工懸臂很長,結(jié)構(gòu)剛度較小、變形較大的的特點。當(dāng)橋位處風(fēng)況復(fù)雜,施工期間可能會遭遇到臺風(fēng)等風(fēng)險較大的嚴(yán)苛施工條件下,采用橋梁構(gòu)件幾何控制法進行控制,控制較為復(fù)雜。還由于該橋位于晉江,主橋鋼構(gòu)件吊裝施工時受潮汐影響較大,鋼構(gòu)件設(shè)計噸位較大,使其吊裝施工難度較大。為了滿足吊裝質(zhì)量,控制鋼構(gòu)件標(biāo)高、線形等技術(shù)要求,本課題研究了大跨度、長懸臂梁拱組合鋼結(jié)構(gòu)吊裝及其構(gòu)件安裝施工的關(guān)鍵技術(shù)和關(guān)鍵工藝,用以積累施工設(shè)計經(jīng)驗,提升科技創(chuàng)新能力。通過總結(jié)該施工工藝為指導(dǎo)今后類似工程施工提供了有益幫助。
[Abstract]:The steel structure bridge has the advantages of large span, high torsional stiffness, high strength, light weight, convenient prefabrication, short construction period, good integrity, simple and beautiful appearance and little influence on the external environment. Compared with concrete bridge, the steel structure bridge can reduce the self-weight of the superstructure and get more clearance under the bridge. With the development of transportation, steel bridge will be widely used in bridge construction. In this paper, the construction technology of beam-arch composite steel structure bridge of Tianan Bridge in Quanzhou City, Fujian Province is analyzed and studied. The long-span upper-supported beam-arch composite steel structure has the characteristics of long span, long cantilever, small stiffness and large deformation in the construction of the main beam. When the wind condition at the bridge location is complex and the severe construction conditions, such as typhoon, may be encountered during construction, the geometric control method of bridge members is adopted to control the bridge, which is more complicated. Because the bridge is located in Jinjiang River, the steel components of the main bridge are greatly affected by the tide and the design tonnage of the steel members is larger, which makes the hoisting construction more difficult. In order to meet the technical requirements of lifting quality, controlling the elevation and alignment of steel components, the key technology and key technology of hoisting and installation of long-span and long-cantilever beam-arch composite steel structure are studied in this paper, in order to accumulate the experience of construction design. To improve the ability of scientific and technological innovation. It is helpful to guide similar engineering construction in the future by summarizing the construction technology.
【學(xué)位授予單位】：華僑大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U445.4

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