【摘要】 在已有烦恼率模型的基础上结合各国规范采用烦恼率评价人行桥振动舒适度,提出了更适合工程应用的人行桥振动烦恼率曲线及竖向、侧向烦恼率容许值。利用Midas对南京云锦路人行桥进行动力分析,并结合烦恼率曲线对该桥的舒适度进行评价,分别计算了竖向、侧向以及竖向侧向耦合振动等工况的烦恼率,得出该桥的动力性能较差。通过采用调谐质量阻尼器(TMD)对该桥进行减振控制,减振效果明显,得到减振后的烦恼率值满足人行桥振动烦恼率舒适度要求。更多还原

【Abstract】 Based on the annoyance rate(AR) model and combined with the national codes,the AR curves as well as the vertical and lateral AR permissible value about the vibration of pedestrian bridges suitable for the application of engineerings are put forward here.Furthermore,the dynamic analysis for the pedestrian bridge of Yunjin Road in Nanjing is carried out by using Midas,and the evaluation for the comfort of the bridge is conducted combined with the AR curves.The AR curves of vertical vibration,lateral vibration and vertical-lateral coupling vibration are calculated separately,then it is obtained that the dynamic performance of the bridge is poor.Through using the tuned mass damper(TMD) to control the vibration of the bridge,it is shown that the vibration-damping level is obvious,and the AR value after damping could meet the requirement of the comfort proposed here.更多还原