南京长江二桥斜拉桥索梁锚固区模型疲劳试验研究

FATIGUE TEST RESEARCH ON THE CABLE ANCHO RAGE ZONE OF THE MAIN GIRDER OF THE SECO ND NANJING YANGTZE CABLE-STAYED BRIDGE

对于大跨度斜拉桥的斜拉索锚固结构 ,必须认真地研究其设计方法、制造工艺以及疲劳性能等。针对南京长江二桥的索梁锚固结构 ,采用足尺模型进行了疲劳试验 ,测量了其静力变形与疲劳荷载作用下的受力性能。通过试验验证了设计的正确性和制造工艺的可行性。

Cable anchorage zone of t he large span cable-stayed bridges are under very complicated conditi ons and the design methods need to be carefully studied.This paper pr esents the fatigue test research o n the cable anchorage zone of the main girder of the Second Nanjing Yangtze Bridge.In the test,the per formance of the structure under bo th static and fatigue loads are i nvestigated.The test results verif ied correctness of its design and feasibility of its manufacturing t echniques.