摘要
依据等效疲劳损伤原理,将车辆荷载等效为模型车辆荷载频值谱,利用蒙特卡罗法随机抽样模拟出斜拉索的应力时程,假定结构疲劳寿命服从威布尔分布,推导出疲劳可靠度公式,并以株洲市芦凇大桥主桥为实例进行了验证.
In order to quantify the reliability of stay cable on partially cable-stayed bridge under the influence of vehicle load, fatigue reliability formula of stay cable is modified by assuming that the fatigue life is in accordance with the Weibull distribution. Based on the accurate analysis of vehicle load spectrum,the time history of stay cable is simulated and numerical example is presented to testify this method.
出处
《长沙交通学院学报》
2007年第1期6-9,18,共5页
Journal of Changsha Communications University
关键词
部分斜拉桥
斜拉索
车辆荷载谱
蒙特卡罗法
疲劳可靠度
partially cable-stayed bridge
stay cable
vehicle load spectrum
Monte Carlo method
fatigue reliability
