摘要
南村黄河特大桥是黄河小浪底库区蓄水后首次在库区建造的桥梁,为了解决该桥永久钢护筒沉放难题,针对库区水位变化大、与外界不通航的特点,比选了目前常用的钢护筒沉放方案后,首次提出了在钻孔平台上采用履带吊配合龙门吊将永久钢护筒分节吊挂接长、分次振动沉设的施工方法,并介绍了关键施工工艺。工程应用结果表明,采用该施工方法和施工工艺在库区进行永久钢护筒的振动沉设施工是可行的。
The Nancun Yellow River Grand Bridge is the first bridge built in Xiaolangdi Reservoir area of the Yellow River after its impoundment.In order to solve the problem of sinking permanent steel casing,the construction method of using the crawler crane and the gantry crane to lift the permanent steel casing on the drilling platform,weld,joint,vibrate and sink the casing section by section was put forward for the first time on the basis of the characteristics of the reservoir,including dramatic variation of water level and unnavigable status,after comparing and selecting the current commonly used steel casing sinking schemes.The engineering application results demonstrate that it is feasible to apply this construction method and technique to perform vibration sinking of permanent steel casings in the reservoir area.
作者
丁玉春
高波
DING Yuchun;GAO Bo(Jiangsu Provincial Transportation Engineering Group Co.,Ltd.,Zhenjiang,Jiangsu 212100)
出处
《公路交通技术》
2020年第3期83-89,96,共8页
Technology of Highway and Transport
关键词
小浪底库区
永久钢护筒
沉放
特大桥
reservoir area of Xiaolangdi
permanent steel casing
sinking
grand bridge
作者简介
丁玉春(1975-),男,江苏省泰县人,硕士,高工,主要从事公路桥梁施工技术工作。E-mail:41003577@qq.com。
