【摘要】 为研究组合桥面板的疲劳性能,开展随机车流作用下佛陈扩建桥几个构造细节的应力监测,获得构造细节的应力记录;确定对应的等效应力幅和加载次数,进行构造细节的疲劳性能评价。分析表明:纵肋-面板构造细节和弧形切口构造细节在随机车流作用下的最大和等效应力低于常幅疲劳极限,疲劳性能满足无限寿命设计要求。更多还原

【Abstract】 Stress monitoring of several fatigue categories on the Fochen Expansion Bridge under random traffic flows was carried out so as to investigate the fatigue performance of composite bridge decks. The recorded stress time histories on the categories were analyzed to obtain effective stress range and loading cycle,and finally to evaluate their fatigue performance.The results showed that the recorded maximum and effective stress ranges at the rib-to-deck and cutout details were lower than the constant amplitude fatigue limits,which guaranteed the design requirements of infinite life.更多还原