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某带有悬臂梁多层钢连廊竖向TMD振动控制
朱唯丰,涂田刚,陈天麒
摘 要

(上海材料研究所, 上海 200437)

[摘要]当轻量化钢结构楼板跨度较大时,因其竖向自振频率往往易接近人行走或者跑动的频率,可能存在与行人发生共振的危险。共振可能会对行人舒适度、结构的疲劳寿命造成影响。通过某带有悬臂梁的多层钢连廊工程实例,采用有限元软件SAP2000进行振动控制计算,详细分析了在人行荷载激励下,当TMD(调谐质量阻尼器)在不同楼层分布的情况下,结构的加速度响应情况,并提出了设计建议。

[关键词]多层钢连廊; 调谐质量阻尼器; 减振控制; 舒适度

中图分类号:TU318-1文献标识码:A文章编号:1002-848X(2018)11-0094-03

 

Vertical TMD vibration control of a multi-story steel structure corridor with cantilever beam

Zhu Weifeng, Tu Tiangang, Chen Tianqi

(Shanghai Research Institute of Materials, Shanghai 200437, China)

Abstract:When the span of lightweight steel structure is large, the vertical vibration frequency of lightweight steel long-span slab is probably close to the normal pedestrian′s frequency of walking or running, so the resonance is easy to happen. The resonance is likely to make pedestrians feel uncomfortable and affect the fatigue life of structure. A multi-story steel corridor project with a cantilever beam was taken as an example,  SAP2000 was used to calculate the vibration control. The acceleration response was analyzed when the TMD (tuned mass damper) was distributed on different floors under the pedestrian load excitation. According to the results, a design proposal was put forward.

Keywords:multi-layer steel corridor; tuned mass damper; vibration control; comfort level

 

作者简介:朱唯丰,本科,工程师,Email: zwf624@163.com。

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