【正文】 1 斜拉橋施工方案設計 Design of cablestayed bridges construction plan 2020 屆 土木工程 系 專 業(yè) 土木工程 學 號 學生姓名 指導教師 2 摘要： 斜拉橋，又稱斜張橋，是指一種由一條或多主塔與鋼纜組成來支撐橋面的橋梁。是由承壓的塔，受拉的索和承彎的梁 體組合起來的一種結(jié)構(gòu)體系。其可看作是拉索代替支墩的多跨彈性支承連續(xù)梁。其可使梁體內(nèi)彎矩減小，降低建筑高度，減輕了結(jié)構(gòu)重量，節(jié)省了材料。斜拉橋由索塔、主梁、斜拉索組成。主要可分為兩大類：平行連接型、放射性連接型。 本文全面介紹了 鋼桁斜拉橋的 施工 方案，鋼桁斜拉橋的總體施工方案有 橋面及附屬工程施工技術(shù)方案 、 承臺及系梁施工技術(shù)方案、主塔和邊墩身施工技術(shù)方案、鋼桁梁和斜拉索施工技術(shù)方案和鉆孔樁施工技術(shù)方案。 由于 該斜拉橋 是 建設在江河上， 則在基礎施工時要采用雙臂圍堰施工和鉆孔樁施工。 Abstract： 3 Bridge, also known as cablestayed bridge, is a kind of one or more of the position of the main tower and cable to support the bridge deck. By the pressure of the tower, by pulling the cable and the bination of bending of beams in a structural system together. The buttress can be seen as multispan cable instead of elastic support beam. The moment the body can reduce the beam and reduce the building height, reduced structural weight, saving material. Bridge from the tower, the main girder, cablestayed posed. Can be divided into two categories: parallel connection type, connection type radiation. This prehensive introduction to steel truss bridge construction plan, the overall construction of cablestayed steel truss bridge and ancillary works program with the construction technology program, cap and tie beam construction technology program, the main tower and the pier side of the construction technology program , steel truss girder and cable construction technology programs and bored pile construction technology program. Since the bridge was built in rivers, on the basis of construction in the cofferdam to use arms and bored piles. 4 目錄 第 1 章 緒論 ......................................................................................................................... 7 ................................................................................................ 7 定義 .............................................................................................................. 7 斜拉橋的結(jié)構(gòu)特點 ...................................................................................... 7 斜拉橋的機構(gòu)概述 ...................................................................................... 7 ............................................................................................ 8 現(xiàn)澆工藝 ...................................................................................................... 8 短平臺復合型 牽索掛籃施工： .................................................................. 9 鋼主梁懸拼施工法 .................................................................................... 10 拉索施工工藝 ............................................................................................ 11 斜拉橋的發(fā)展現(xiàn)狀 和現(xiàn)在國內(nèi)外比較典型的斜拉橋?qū)嵗? ............................... 11 斜拉橋的發(fā)展現(xiàn)狀 .................................................................................... 11 斜拉橋 世界十大斜拉橋 .......................................................................... 11 斜拉橋 使用中的斜拉撟 .......................................................................... 12 斜拉橋 興建中或規(guī)劃中的斜拉撟 .......................................................... 13 第 2 章 .概述 ....................................................................................................................... 14 工程概況 ............................................................................................................... 14 橋梁布置情況 ............................................................................................ 14 主要建筑材料 ............................................................................................ 14 主要構(gòu)造 .................................................................................................... 14 主要工程數(shù)量 ........................................................................................... 16 鋼桁斜拉橋施工重難點分析 ............................................................................... 16 大直徑深水超長樁基礎是本工程施工的重難點之一。 ........................ 16 水中承臺 及大體積混凝土澆注。 ............................................................ 16 材料的選用 ................................................................................................ 17 工期 ............................................................................................................ 17 總體施工方案 ...................................................................................................... 17 鉆孔樁施工技術(shù)方案 ............................................................................... 17 承臺及系梁施工技術(shù)方案 ........................................................................ 17 主塔和邊墩身施工技術(shù)方案 .................................................................... 17 鋼桁梁和斜拉索施工技術(shù)方案 ................................................................ 18 5 橋面及附屬工程施工技術(shù)方案 ................................................................ 18 第 3 章 主要分項工程施工方案 ..................................................................................... 18 基樁施工方案 ........................................................................................................ 18 雙壁鋼圍堰施工 .......................................................................................... 18 下鋼護筒 ...................................................................................................... 22 鉆機選型 ...................................................................................................... 23 泥漿 .............................................................................................................. 23 鉆進 .............................................................................................................. 24 清孔 ...............................................................................