(1 清华大学建筑设计研究院有限公司,北京 100084;2 中国航空规划设计研究总院有限公司,北京 100012)

摘要: 国家跳台滑雪中心(雪如意)位于山顶,采用预应力钢桁架结构体系,悬挑大、竖向刚度较柔,属于风敏感的结构类型.通过分析不同人员活动工况下悬挑端部的竖向振动加速度响应,对雪如意的振动舒适度进行研究,研究结果表明:大跨整体悬挑结构容易与人员活动产生共振,且越远端的位置竖向振动加速度峰值越大,超出了振动舒适度的加速度限值 0.22m/ s2.采用了电涡流 TMD 减振装置并给出了相关参数取值,以减小竖向振动加速度峰值,分析结果表明:电涡流 TMD 对人员活动的减振效果较好,减振效率可达到 50%,对风荷载作用的减振效果次之,减振效率一般难以达到 50%;加设电涡流 TMD 后,竖向振动加速度峰值可以满足振动舒适度的加速度限值0.22m/ s2 的要求.

关键词: 国家跳台滑雪中心(雪如意);大跨度整体悬挑结构;人行舒适度;风振舒适度;电涡流调谐质量阻尼器;2022 北京冬奥会

中图分类号:TU393 文献标志码:A 文章编号:1002-848X(2022)18-0018-08

DOI:10.19701 / j.jzjg.ZJ220056

Comfort analysis of National Ski Jumping Center (Xueruyi)

ZHU Duoe1,YANG Xiao1,MA Botao2,LI Qinxiang1,MIAO Lei1,CUI Juan1,YANG Zhenrong1

(1 Architectural Design and Research Institute of Tsinghua University Co. ,Ltd. ,Beijing 100084,China;2 China Aviation Planning and Design Institute Design Co. ,Ltd. ,Beijing 100012,China)

Abstract: National Ski Jumping Center (Xueruyi) is located on the top of the mountain. It adopts a prestressed steel trussstructure system with large overhangs and soft vertical stiffness. It is a wind-sensitive structure type. By analyzing thevertical vibration acceleration response of the cantilever end under different personnel activity conditions,the vibrationcomfort of Xueruyi was studied. The research results show that the large-span overall cantilever structure is prone toresonance with personnel activities,and the farther the position is,the peak value of vertical vibration acceleration responseis greater,and the acceleration limit of vibration comfort level of 0.22m/ s2is exceeded. The eddy current tuned massdamper(TMD) vibration reduction device was adopted and the relevant parameters were given to reduce the peak value ofvertical vibration acceleration. The analysis results show that the eddy current TMD has better vibration reduction effect onpersonnel activities,and the vibration reduction efficiency can reach 50%,the vibration reduction effect on wind load issecond,and the vibration reduction efficiency is generally difficult to reach 50%. After adding eddy current TMD,the peakvalue of vertical vibration acceleration can meet the acceleration limit of 0.22m/ s2for vibration comfort.

Keywords:National Ski Jumping Center ( Xueruyi);large-span overall cantilever structure;pedestrian comfort;windvibration comfort;eddy current tuned mass damper;2022 Beijing Olympic Winter Games

∗清华大学建筑设计研究院科研项目(山地建筑风荷载及风致响应设计研究 KYN2020-020).

第一作者:朱朵娥,硕士,工程师,主要从事结构设计工作,Email:774126344@ qq. com.

[引用本文] 朱朵娥,杨霄,马伯涛,等. 国家跳台滑雪中心(雪如意)舒适度分析[ J]. 建筑结构,2022,52(18):18-25. ZHU Duoe,YANG Xiao,MA Botao,et al. Comfort analysis of National Ski Jumping Center ( Xueruyi) [ J].Building Structure,2022,52(18):18-25.