大跨度环形钢箱梁立交桥施工技术

The Construction Technology of Large Span Circular Steel Box Girder Overpass

在城市桥梁工程中,钢箱梁结构由于其整体性能好、抗弯抗扭刚度大,现已成为桥梁设计中常用的结构形式。但随着桥梁跨度的增加,形式的多变以及道路交通环境的日趋复杂,其施工吊装成为主要难题,本文针对实际的工程案例,提出了钢箱梁桥分块吊装方法,解决了相应的技术难题,为类似工程提供参考和借鉴。

In city bridge engineering, large span steel box girder, because of its good overall performance and big bending torsional stiffness, has been applied more and more , and it has becoming used in the design of bridge structure. But with the increase of bridge span, form of changeable and in the face of complex road traffic environ- ment, its construction hoisting has becoming major problems, this article in view of the actual project, proposed the partition lifting method of steel box girder bridge to solve the technical problems, providing a reference for similar projects.