目前,人行桥设计倾向于重量轻和整体结构,这样就会降低内在的刚度和震动阻尼。因此,由于结构的激发性震动将引起行人的不舒适感。这就需要寻找一种能减小人行桥震动,花钱又不多的方法。本文介绍的吸震器就是为此设计的。英国规范BS5400推荐最大加速振幅为建议设计值,超过它,行人就要感到不舒服。所以,我们把它作为“设计极限”,或“BS5400极限参考值”。此值在莱昂哈特(Leonhard)和史密斯(Smith)早期建议 At present, the footbridge design tends to be lightweight and the overall structure, thus reducing the inherent stiffness and vibration damping. Therefore, pedestrian discomfort will be caused due to the structural vibration of vibration. This needs to find a way to reduce the vibration of the footbridge, not much money. This article describes the shock absorber is designed for this. British standard BS5400 recommended maximum acceleration amplitude of the proposed design value, beyond it, pedestrians will feel uncomfortable. So, let’s take it as “design limit” or “BS5400 limit reference value”. This value was suggested early in Leonhard and Smith