跨既有铁路客专连续梁现浇施工支架设计

跨越既有铁路的连续梁,因受工期的限制,由悬臂灌筑法改为支架现浇法。在对既有接触网线改造的基础上,采用贝雷支架跨越既有铁路,能满足施工中承载力、强度和刚度的要求。以迁菱铁路连续梁现浇施工为例,对碗扣和贝雷支架的力学特性进行了检算,为类似工程施工提供参考。

Brackets Design in Continuous Cast-in-place Beam Construction Crossing Existing Railway PDL

Due to the construction period limit, continuous beams which cross existing railways adopt bracket cast-in-place method in place of cantilever casting method. Based on the reform of existing contact lines, Bailey bearing brackets are used in crossing existing railway, meeting the requirements of bearing capacity, strength, and rigidity in construction. Tak- ing continuous beam cast-in-place construction of Qianling railway as an example, this paper checks mechanical characteris- tics of bowl scaffolds and Bailey bearing-brackets, which can be references to similar projects.