深水大跨少支点现浇支架施工的应用

Application of Cast-in-site Construction with Few Supported-point Brackets of Deep-watered Long-span Bridge

少支点现浇支架施工不仅能保证箱梁施工安全和质量,而且能保障桥下船只的安全通行。结合唐山曹妃甸工业区跨纳潮河2#大桥工程引桥的少支点支架施工实例,介绍了少支点支架基本结构和深水大跨少支点支架施工技术,并对少支点支架结构受力进行分析,以便为未来类似工程提供参考。

The cast -in -place construction with few supported -point brackets can not only ensure con- struction safety and quality of Box Girder, but also ensure the construction safety of the safe vessel traffic under bridge. With the example of construction with few supported - point brackets of the approach bridge of the Nachaohe 2# Bridge in Caofeidian Industrial Zone of Tangshan, the basic structure and key construction tech- niques of construction with few supported - point brackets are introduced, and structure stress of few supported - point brackets is analyzed, so as to offer reference to similar constructions in future.