公路钢斜拉桥索梁锚固结构疲劳荷载的确定

Determination of Fatigue Load for Cable and Girder Anchorage Structure of Highway Steel Cable-Stayed Bridge

针对我国公路桥梁设计规范暂无疲劳荷载规定的情况,在国内一些城市和国道路段车辆荷载统计资料的基础上,参照苏通大桥工可交通量的预测和公路工程技术标准,利用国外规范和疲劳累积损伤理论,对索梁锚固结构疲劳试验荷载的确定方法和原则进行了研究。

In the light of the situation that there are no provisions about fatigue load in the highway bridge design codes and specifications in China for the time being, this paper conducts a study of the determination method and principle of fatigue test load for the cable and girder anchorage structure of highway steel cable-stayed bridge, using the specifications abroad and fatigue cumulative damage theories, on the basis of the vehicle load statistic data collected in some cities and on some sections of the National Roads in the country, and also with reference to the traffic volume prediction in the feasibility study of Sutong Bridge and other relevant highway engineering technical standards.