中文摘要：

以某大跨径斜拉桥采用的正交异性钢桥面板为工程背景，进行钢桥面板疲劳性能试验研究，足尺疲劳试验循环次数累积达到1020万次。试验结果表明：加劲肋与盖板连接部位出现了纵向疲劳裂纹；加劲肋与横隔板连接的焊缝端部出现了在焊趾处萌生并沿加劲肋腹板扩展的疲劳裂纹；受焊接残余应力影响，处于疲劳荷栽压应力区的腹板与横隔板连接焊缝端部也萌生了疲劳裂纹；横隔板挖孔部位无疲劳裂纹；若以测点应力发生变化为疲劳失效判据，则加劲肋与横隔板连接端部的疲劳细节高于AASHTo中D类和Eurocode的63类细节等级，加劲肋与盖板连接的疲劳细节高于AASHTO中D类和Eurocode的71类细节等级；若以出现疲劳裂纹为疲劳失效判据，则其疲劳细节高于AASHTO规范中D类和Eurocode的80类细节等级。

英文摘要：

Abstract. Based on an orthotropic steel deck of a long-span cable-stayed bridge, a full-scale fatigue test was carried out for researching the fatigue behavior of critical details in steel bridge decks. The load cycle had reached 10.2 million when the fatigue test was completed. The results show that fatigue cracks are found at the rib-to-deck details and also at weld toe of rib-to- diaphragm which expand along rib web; due to the welding residual stress, cracks are found in the compressive zone of rib-to-diaphragm; however, none is found in the cutout of diaphragm; based on the stress change criterion, the fatigue detail of rib-to-diaphragm satisfies the category D of AASHTO Specification and the category 63 of Eurocode while the fatigue detail of rib-to-deck is more than the category D of AASHTO Specification and the category 71 of Eurocode; if fatigue crack observation rule is adopted, the fatigue detail of rib-to-diaphragm is higher than the category D of AASHTO Specification and the category 80 of Eurocode.