摘要
武汉市沌口长江公路大桥主桥为主跨760 m双塔双索面钢箱梁斜拉桥,为已建最宽的跨江大桥,边跨整体位于无水区,超宽钢箱梁存梁梁段多,存梁施工时起重船吊梁越过高墩,施工风险高。从经济性、安全风险、施工进度等方面对高支架存梁与矮支架存梁施工方案进行分析研究,采用矮支架存梁+卷扬机牵引系统滑梁方案优势明显,避免了高支架滑梁施工风险,且钢箱梁存放和安装具有较高的工效。同时,通过存梁支架体系转换,解决了矮支架存梁墩顶梁段安装时存在空间位置干扰的技术难题。
The main bridge of the Zhuankou Yangtze River Highway Bridge in Wuhan City adopts the main span 760 m double-tower double-span steel box girder cable-stayed bridge, which is the widest cross-river bridge that has been built. The side span is located in the water-free area, and the ultra-wide steel box girder is stored. There are many beam sections. When the beam is installed, the crane hoisting beam is too high and the construction risk is high. From the aspects of economy, safety risk, construction schedule, etc., the construction scheme of high-supported beam and short-supported beam is analyzed. The advantage of using the short-stayed beam and hoist traction system is obvious, which avoids the risk of high-slide beam construction. And steel box beam storage and installation has high effectiveness. At the same time, through the conversion of the beam-supporting system, the technical problem of spatial position interference during the installation of the beam section of the short-stayed beam is solved.
作者
卜星玮
徐海云
陈诚
BU Xing-wei;XU Hai-yun;CHEN Cheng(CCCC Second Harbor Engineering Co., Ltd., Wuhan, Hubei 430012, China)
出处
《中国港湾建设》
2019年第6期73-77,共5页
China Harbour Engineering
