斜拉桥超宽幅钢梁浮箱移运施工技术

Floating Tank Transporting Construction Technology of Ultra-wide Steel Beam for Cable-Stayed Bridge

以阜阳市阜裕大桥为背景工程,采用理论分析和数值计算相结合的方法,对超宽幅钢梁浮船移运施工技术进行了研究。结果表明,将多个浮箱利用锚栓、型钢连接在一起可组成运输超宽幅钢梁的浮船;利用向浮箱内注水或排水可灵活调整其吃水深度,控制浮箱顶面高程,可便捷地将钢梁支撑由平台转化至浮箱上,避免设置大型吊装设备,因此具有良好的经济效益,同时为运输条件受限的超宽幅钢箱梁斜拉桥悬臂拼装施工提供了依据与参考。

Taking Fuyu Bridge in Fuyang City as the background project,the combined method of the theoretical analysis and numerical calculation is used to study the construction technology of ultra-wide steel beam transported by the floating boat.The results show that the multiple floating tanks connected by the anchor bolts and section steel can form a floating boat for transporting the ultra-wide steel beams.By injecting water into the floating tank or draining water,its draft depth can be flexibly adjusted.The top elevation of the floating tank is controlled able to conveniently transform the steel beam support from the platform up to the floating boat without the large-sized hoisting equipment.Therefore,this technology has the good economic benefit,which provides the basis and reference for the cantilever assembly construction of ultra-wide steel beam cable-stayed bridges limited by the transportation.