大跨度钢箱叠拱桥实体圆钢吊杆疲劳试验研究

Fatigue Experiment Research on Solid Round Steel Hanger of A Long-span Double Steel Arch Bridge

新建哈尔滨-大连客运专线铁路跨越长春市富民大街的新开河特大桥设计采用了138 m钢箱叠拱结构,该桥型及实体圆钢吊杆均为铁路桥梁设计首次采用,且设于无碴轨道区域,对该桥关键技术的研究工作包括五个方面内容,实体圆钢吊杆的应用是其中之一,包括疲劳问题研究、低温断裂韧性研究、与耳板连接研究等,本文就实体圆钢吊杆的应用之疲劳问题进行分析探讨,得到了一些有益的成果.

Xinkaihe grand bridge on newly-built passenger dedicated railway,Harbin to Dalian city,acrosses Fumin Street in Changchun.The design adoptes 138 m double steel arch bridge which is firstly adopted in railway bridges and is set up in ballastless track region.Research work on key technology for this bridge contains five parts,one of which is the application of solid round steel hanger,including fatigue research,low temperature fracture toughness research,anchorage plate connection research and so on.Fatigue problems of solid round steel hanger are discussed in detail in the paper,and some achievements are accomplished.