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本文通过对一大跨钢结构人行天桥进行减振设计,表明采用STMD和MTMD都能有效地减少人行天桥的共振响应;而后分析了安装TMD后人行天桥的动力特性变化,指出设计时要特别注意安装TMD后在行人的行走频率范围内可能引起的新的共振。
In this paper, the design of a large-span steel pedestrian bridge is designed to reduce the vibration, which shows that both the STMD and MTMD can effectively reduce the resonance of the pedestrian bridge. Then the dynamic characteristics of the pedestrian bridge with TMD are analyzed. New resonance that may be caused by the installation of TMD within the walking frequency of pedestrians.