介绍了典型三跨连续梁主跨跨越既有结构物时采用门式支架的施工方法，阐述了门式支架的设计要点，对门式支架施工的关键流程进行了介绍，实践证明，采用门式支架施工方法满足了施工规范要求，可为同类桥梁门式支架的设计与施工做参考。%abstract:The PaPer introduces the door-like scaffold’s construction methods in the tyPical three-sPan continuous beam’s main sPan crossing the existing buildings,illustrates the design Points for the door-like scaffold,introduces the key Procedure for the scaffold construction,and Proves by the Practice that the door-like scaffold construction method meets the demands of the construction regulation,so as to Provide some reference for the design and construction of similar door-like scaffold in bridges.
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