钢箱梁临时支架设计与施工探讨

DISCUSSION ON DESIGN AND CONSTRUCTION OF STEEL BOX GIRDER TEMPORARY BRACKET

鉴于钢箱梁在已通行道路复杂路况情况下整体吊装施工困难,结合北京昌平区桥梁跨线加宽施工实例,对临时支架的设计与施工方案进行详细介绍,在分析总结施工过程中的关键控制点的基础上加以验算。工程实践证明,该技术科学合理,满足设计施工需求。

In view of the difficulties in the overall hoisting construction of steel box girder under the complex road conditions of the existing roads,combined with the construction example of widening the span line of bridge in Changping District,Beijing,the design and construction of temporary support are introduced in detail,and the calculation is checked on the basis of analyzing and summarizing the key control points in the construction process.Engineering practice has proved that the technology is scientific and reasonable,so that can meet the design and construction requirements.