大型跨海大橋非通航孔橋施工技術(shù)研究
本文選題:跨海大橋 切入點:非通航孔橋 出處:《大連理工大學(xué)》2015年碩士論文 論文類型:學(xué)位論文
【摘要】:跨越海灣、海峽等海域的跨海大橋,因其總體規(guī)模大,科技含量高,代表了尖端的橋梁技術(shù)。作為跨海大橋重要組成部分的非通航孔橋,為提高質(zhì)量、安全、效率及效益等,已朝預(yù)制化、標(biāo)準(zhǔn)化、大型化、工廠化及裝配化等趨勢發(fā)展,施工工藝由以往的現(xiàn)澆施工逐步改進(jìn)為工廠化整孔預(yù)制海上吊裝的方案,以預(yù)制混凝土箱梁為例,其施工囊括了箱梁的預(yù)制及安裝、附屬設(shè)施等方面。目前,跨海大橋非通航孔橋施工技術(shù)相關(guān)研究滯后于實際,涉及具體問題缺乏可操作性。本研究以青島膠州灣跨海大橋(又稱青島海灣大橋)非通航孔橋混凝土箱梁整孔預(yù)制吊裝施工為背景,通過對非通航孔橋箱梁預(yù)制、場內(nèi)轉(zhuǎn)運、海上出運及安裝等各階段施工技術(shù)要點的分析總結(jié),實現(xiàn)優(yōu)化預(yù)制場設(shè)備配置及設(shè)計、改進(jìn)箱梁場內(nèi)轉(zhuǎn)運技術(shù)及安裝工藝等目標(biāo)。實踐證明,課題研究的項目施工工藝合理,解決了非通航孔橋大型混凝土箱梁整孔預(yù)制吊裝各環(huán)節(jié)關(guān)鍵技術(shù)問題,形成了一套適合橋梁尤其是跨海大橋項目施工技術(shù)方案,為其他類似工程提供參考。
[Abstract]:Because of its large scale and high scientific and technological content, it represents the cutting-edge bridge technology. As an important part of the sea crossing bridge, the non-navigable bridge can improve the quality, safety, efficiency and benefit of the bridge. With the development of prefabrication, standardization, large scale, factory and assembly, the construction technology has been gradually improved from the former cast-in-place construction to the factory prefabricated offshore hoisting scheme, taking the precast concrete box girder as an example. The construction includes prefabrication and installation of box girder, ancillary facilities and so on. At present, the research on construction technology of non-navigable hole bridge of cross-sea bridge lags behind the actual situation. This study is based on the prefabricated hoisting construction of the concrete box girder of the non-navigable hole bridge of Qingdao Jiaozhou Bay Bridge (also known as the Qingdao Bay Bridge), through the prefabrication of the box girder of the non-navigable hole bridge and the transportation of the box girder in the field. The main points of construction technology in various stages, such as sea transportation and installation, are analyzed and summarized in order to optimize the equipment configuration and design of prefabricated yard, improve the transfer technology and installation technology in box girder yard, etc. The practice proves that the construction technology of the project studied in this paper is reasonable. The key technical problems of prefabricated hoisting of large concrete box girder of non-navigable bridge are solved, and a set of construction technology scheme suitable for bridge, especially sea crossing bridge project is formed, which provides reference for other similar projects.
【學(xué)位授予單位】:大連理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:U445.4
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