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(1 清華大學(xué)建筑設(shè)計(jì)研究院有限公司,北京 100084;2 中國航空規(guī)劃設(shè)計(jì)研究總院有限公司,北京 100012)

摘要: 國家跳臺(tái)滑雪中心(雪如意)位于山頂,采用預(yù)應(yīng)力鋼桁架結(jié)構(gòu)體系,懸挑大、豎向剛度較柔,屬于風(fēng)敏感的結(jié)構(gòu)類型.通過分析不同人員活動(dòng)工況下懸挑端部的豎向振動(dòng)加速度響應(yīng),對(duì)雪如意的振動(dòng)舒適度進(jìn)行研究,研究結(jié)果表明:大跨整體懸挑結(jié)構(gòu)容易與人員活動(dòng)產(chǎn)生共振,且越遠(yuǎn)端的位置豎向振動(dòng)加速度峰值越大,超出了振動(dòng)舒適度的加速度限值 0.22m/ s2.采用了電渦流 TMD 減振裝置并給出了相關(guān)參數(shù)取值,以減小豎向振動(dòng)加速度峰值,分析結(jié)果表明:電渦流 TMD 對(duì)人員活動(dòng)的減振效果較好,減振效率可達(dá)到 50%,對(duì)風(fēng)荷載作用的減振效果次之,減振效率一般難以達(dá)到 50%;加設(shè)電渦流 TMD 后,豎向振動(dòng)加速度峰值可以滿足振動(dòng)舒適度的加速度限值0.22m/ s2 的要求.

關(guān)鍵詞: 國家跳臺(tái)滑雪中心(雪如意);大跨度整體懸挑結(jié)構(gòu);人行舒適度;風(fēng)振舒適度;電渦流調(diào)諧質(zhì)量阻尼器;2022 北京冬奧會(huì)

中圖分類號(hào):TU393 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):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

∗清華大學(xué)建筑設(shè)計(jì)研究院科研項(xiàng)目(山地建筑風(fēng)荷載及風(fēng)致響應(yīng)設(shè)計(jì)研究 KYN2020-020).

第一作者:朱朵娥,碩士,工程師,主要從事結(jié)構(gòu)設(shè)計(jì)工作,Email:774126344@ qq. com.

[引用本文] 朱朵娥,楊霄,馬伯濤,等. 國家跳臺(tái)滑雪中心(雪如意)舒適度分析[ J]. 建筑結(jié)構(gòu),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.