高速公路现浇桥梁支架及门洞验算初步探讨

On exploration for cast-in-place bridge support and door hole calculus on expressways

以采用搭设钢管支架对某高速公路互通区跨主线部分预应力混凝土现浇箱梁施工为例,对现浇桥梁存在的地基承载力、支架稳定性、模板的应力以及对有通行要求的设门洞的各项验算进行初探,以期为现浇桥梁的支架布设积累经验。

By taking the prestressed concrete cast-in-place box girder in main line part in interworking area of some expressway with the steel pipe support as an example,the paper explores from the foundation loading capacity,the support stability,and the model stress and all kinds of calculus of door holes for traffic,so as to accumulate experience for the support layout of the cast-in-place bridges.