本文選題：鋼箱拱 + 整體吊裝法　； 參考：《江蘇科技大學(xué)》2014年碩士論文

【摘要】：近年來(lái)，鋼拱橋由于自重輕，水平推力相對(duì)較小，結(jié)構(gòu)形式多樣，被廣泛應(yīng)用于橋梁建設(shè)當(dāng)中，成為發(fā)展大跨徑、輕結(jié)構(gòu)的理想橋型。但隨著施工地點(diǎn)的改變，施工條件也不一樣。西北地區(qū)由于地處寒旱區(qū)，其晝夜溫差大，風(fēng)速高，因此給橋梁建設(shè)帶來(lái)了難題。且該地區(qū)由于種種原因也始終沒(méi)有開(kāi)展過(guò)類(lèi)似大跨度橋梁工程的建設(shè)。因此研究寒旱區(qū)拱橋施工，確保橋梁施工質(zhì)量及結(jié)構(gòu)安全，提供相應(yīng)的施工方法與建議是十分必要的。 鋼拱橋的施工方法主要有支架施工法、懸臂施工法、轉(zhuǎn)體施工法、纜索施工法以及整體吊裝法。前述施工方法拱肋在空中的施工周期都較長(zhǎng)，而西北地區(qū)的高風(fēng)速對(duì)于長(zhǎng)時(shí)間處于高空中未就位拱肋的受力是不利的。本文主要研究整體吊裝法對(duì)于該地區(qū)拱肋吊裝的實(shí)際應(yīng)用。本課題的研究是以?xún)?nèi)蒙古伊克昭盟大橋?yàn)楸尘�，通過(guò)對(duì)整體起吊的吊塔高度以及吊點(diǎn)數(shù)量、吊點(diǎn)位置的比選工作，以確保拱肋在起吊過(guò)程中有一個(gè)比較理想的變形與受力；對(duì)拱肋局部進(jìn)行補(bǔ)強(qiáng)驗(yàn)算，，對(duì)拱肋局部應(yīng)力集中的部位提供相應(yīng)的補(bǔ)強(qiáng)措施；對(duì)拱肋的整體起吊翻轉(zhuǎn)過(guò)程進(jìn)行一個(gè)整體的穩(wěn)定性計(jì)算，驗(yàn)算拱肋在起吊翻轉(zhuǎn)過(guò)程中的穩(wěn)定性能否滿(mǎn)足規(guī)范要求。本文的研究豐富了我國(guó)寒旱區(qū)鋼箱提籃拱橋施工方法的依據(jù)，將為我國(guó)同類(lèi)地區(qū)的橋梁施工起吊增添新的經(jīng)驗(yàn)，本課題的分析研究還具有一定的理論與實(shí)用價(jià)值，將為拱肋整體起吊的施工方法在全國(guó)推廣與發(fā)展起到推動(dòng)作用。
[Abstract]:In recent years, steel arch bridge has been widely used in bridge construction because of its light weight, relatively small horizontal thrust and diversified structure. It has become an ideal bridge type for developing long span and light structure. But with the change of construction site, construction conditions are also different. The northwest region is located in the cold and dry area, its diurnal temperature difference is big, the wind speed is high, therefore brings the difficult problem to the bridge construction. Because of various reasons, similar long-span bridge construction has never been carried out in this area. Therefore, it is necessary to study the construction of arch bridge in cold and dry area, to ensure the construction quality and structure safety of the bridge and to provide corresponding construction methods and suggestions. The construction methods of steel arch bridge include support construction, cantilever construction, rotary construction, cable construction and integral hoisting. The construction period of arch rib in the above mentioned construction method is long, but the high wind speed in northwest area is unfavorable to the force of the arch rib in the high altitude for a long time. This paper mainly studies the practical application of integral hoisting method to arch rib hoisting in this area. The research of this subject is based on the Ike Zhaomeng Bridge in Inner Mongolia, by comparing the height of the lifting tower, the number of the lifting points and the position of the lifting point, to ensure that the arch rib has an ideal deformation and force in the process of lifting. The reinforcement check calculation is carried out on the local arch rib, and the corresponding reinforcement measures are provided for the local stress concentration of the arch rib, and the overall stability calculation is carried out for the whole lifting and flipping process of the arch rib. Check whether the stability of arch rib in the process of lifting and turning can meet the requirements of the specification. The research in this paper enriches the foundation of construction method of steel box hoist arch bridge in cold and arid area of China, and will add new experience to the bridge construction and hoisting in the same area of our country. The analysis and research of this subject also has certain theoretical and practical value. The construction method of hoisting for arch rib will be popularized and developed in the whole country.
【學(xué)位授予單位】：江蘇科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：U448.22;U445.4

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