【摘要】 连廊作为连接两幢或几幢建筑之间的走廊,一般其竖向自振频率接近于人行走频率或者跑步频率,容易产生共振,而产生舒适度问题,因此必要时需要采用有效的减振措施来控制连廊结构的振动。采用调谐质量阻尼器(TMD)对一钢连廊实际工程进行减振控制设计,通过时程分析方法模拟随机人行荷载激励,分为步行荷载工况和跑步荷载工况对其进行人致振动分析。对比分析了钢连廊结构在相同人行激励下加设TMD前后的振动响应。结果表明,安装TMD后钢连廊的最大加速度幅值明显减小,满足舒适度要求。TMD是钢连廊竖向舒适度控制的一种有效手段,可为以后类似工程的减振设计提供参考。更多还原

【Abstract】 Corridor is the connection between two or more buildings. The vertical natural frequency of corridor is close to the frequency of the excitations induced by human,like walking or running,which may resonate the structure and discomfort the pedestrians,therefore it ’s highly necessary to take effective vibration control measures. Tuned Mass Damper technology is discussed in this paper to be applied to a practical project to control the vertical vibration of a certain corridor. The responses of the corridor can be finally obtained through Fast Nonlinear Analysis by inputting simulated stochastic human excitations,which can be classified as walking load case and running load case. It can be concluded from the comparison between the acceleration response of the corridor without and with the TMD devices installed that the peak of acceleration time history decreases sharply down to the limitation of Comfort Standards after installing TMD devices. It can also be seen that TMD technology is an effective method in control vertical response and can offer a reference for the subsequent similar projects.更多还原