摘要
大跨度人行天桥由于建筑高度的限制,其截面尺寸较小,导致其刚度较弱,在人行荷载的作用下,会产生较大的振动,导致行人的不适感。以某大型人形天桥钢结构工程为例,首先采用有限元软件对人行天桥设置TMD前后的桥梁频率进行分析,然后通过现场的TMD安装及减振效果调试,满足规范规定的舒适度要求。
Due to the limitation of building height,the section size of long-span pedestrian bridge is small,which cause weak stiffness. The pedestrian loading always produce large vibration,which may lead to pedestrians discomfort. Taking a large pedestrian bridge steel structure project as an example,the finite element software was used to analyze the frequency of the pedestrian bridge set before and after TMD. Through the on-site installation and debugging of TMD damping effect to satisfy the comfort requirements of specifications.
出处
《钢结构》
北大核心
2016年第5期52-54,58,共4页
Steel Construction
关键词
大跨度
人行天桥
TMD
调试
频率
long-span
pedestrian bridge
TMD
debugging
frequency
