钢结构人行天桥减振加固设计

近年来我国城市人行天桥向轻质、大跨方向发展,使得振动问题引起越来越多的关注。我国桥梁设计规范仅对结构竖向自振频率有具体要求,缺少对振动舒适度评价的相关规定。该文参考英国桥梁规范中对人行天桥振动舒适度的相关规定,对深圳市某人行天桥进行计算分析并对桥梁振动过大问题提出相应的减振加固措施。

Design of Shock Absorption and Reinforcement for Steel Structure Pedestrian Overpass

With the development of the urban pedestrian overpass to the direction of light quality and long span,the vibrating problem is made to lead more and more attentions.The design standard of bridge in China only has the detail requirements of vertical self-vibration frequency of the structure.There are no relative stipulations to evaluate the vibrating comfortableness.Referring the relative stipulations for the vibrating comfortableness of the pedestrian overpass in the bridge standard of UK,the article calculates and analyzes a pedestrian overpass of Shenzhen,and puts forward the relative shock absorption and reinforcement measures for the great vibration of bridge.