多跨贝雷梁支架在跨线桥现浇梁施工中的优化技术

Optimization Technology of Multi-Span Bailey Beam Support in Cast-in-Place Beam Construction of Bridge Overcross Existing Line

以某跨线桥施工为例,针对原设计方案中道路净高不达标等问题,对贝雷梁支架施工方案进行优化,最终采用2幅2跨2联的方案,并对支架结构的力学性能指标进行验算。结果表明,贝雷梁的应力、变形量均得到了有效控制,施工方案可行。

Taking a bridge overcross the existing line as an example,the construction scheme of Bailey beam support was optimized in view of the problems of road net height not reaching the standard in the original design scheme,finally,the scheme of two panels and two cross-links was adopted,and the mechanical properties of the support structure were checked.The results show that the stress and deformation of Bailey beam are effectively controlled and the construction scheme is feasible.