国家跳台滑雪中心雪如意)舒适度分析

引用文献:

朱朵娥 杨霄 马伯涛 李青翔 苗磊 崔娟 杨镇荣. 国家跳台滑雪中心雪如意)舒适度分析[J]. 建筑结构,2022,48(18):18-25.

ZHU Duoe YANG Xiao MA Botao LI Qinxiang MIAO Lei CUI Juan YANG Zhenrong. Comfort analysis of National Ski Jumping Center (Xueruyi)[J]. Building Structure,2022,48(18):18-25.

作者:朱朵娥 杨霄 马伯涛 李青翔 苗磊 崔娟 杨镇荣
单位:清华大学建筑设计研究院有限公司 中国航空规划设计研究总院有限公司
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
作者简介:朱朵娥,硕士,工程师,主要从事结构设计工作,Email:774126344@qq.com。
基金: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)。
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Comfort analysis of National Ski Jumping Center (Xueruyi)
ZHU Duoe YANG Xiao MA Botao LI Qinxiang MIAO Lei CUI Juan YANG Zhenrong
(Architectural Design and Research Institute of Tsinghua University Co., Ltd. China Aviation Planning and Design Institute Design Co., Ltd.)
Abstract: National Ski Jumping Center(Xueruyi) is located on the top of the mountain. It adopts a prestressed steel truss structure system with large overhangs and soft vertical stiffness. It is a wind-sensitive structure type. By analyzing the vertical vibration acceleration response of the cantilever end under different personnel activity conditions, the vibration comfort of Xueruyi was studied. The research results show that the large-span overall cantilever structure is prone to resonance with personnel activities, and the farther the position is, the peak value of vertical vibration acceleration response is greater, and the acceleration limit of vibration comfort level of 0.22 m/s2 is exceeded. The eddy current tuned mass damper(TMD) vibration reduction device was adopted and the relevant parameters were given to reduce the peak value of vertical vibration acceleration. The analysis results show that the eddy current TMD has better vibration reduction effect on personnel activities, and the vibration reduction efficiency can reach 50%, the vibration reduction effect on wind load is second, and the vibration reduction efficiency is generally difficult to reach 50%. After adding eddy current TMD, the peak value of vertical vibration acceleration can meet the acceleration limit of 0.22 m/s2 for vibration comfort.
Keywords: National Ski Jumping Center(Xueruyi); large-span overall cantilever structure; pedestrian comfort; wind vibration comfort; eddy current tuned mass damper; 2022 Beijing Olympic Winter Games
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