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(1 中國建筑西南設(shè)計(jì)研究院有限公司，成都 610081； 2 同濟(jì)大學(xué)建筑工程系，上海 200092)

［摘要］   現(xiàn)行規(guī)范沒有給出振動(dòng)舒適度的具體評價(jià)標(biāo)準(zhǔn)及相應(yīng)的設(shè)計(jì)參數(shù)。以青島體育中心綜合訓(xùn)練館大跨度樓蓋為背景，提出以3.3Hz 為下限控制頻率作為方案選擇依據(jù)。采用MIDAS/Gen 對9種不同結(jié)構(gòu)方案進(jìn)行有限元分析，結(jié)合其他評價(jià)標(biāo)準(zhǔn)，選取大跨度預(yù)應(yīng)力樓蓋進(jìn)行結(jié)構(gòu)設(shè)計(jì)。為了確保滿足舒適度要求，對樓蓋進(jìn)行現(xiàn)場振動(dòng)測試，試驗(yàn)結(jié)果與理論計(jì)算基本符合。實(shí)踐表明，以頻率作為振動(dòng)舒適度設(shè)計(jì)的控制參數(shù)切實(shí)可行。
［關(guān)鍵詞］   大跨度樓蓋；   豎向振動(dòng)頻率；   舒適度；   有限元分析；   綜合比較；   動(dòng)參數(shù)檢測

Study on the vertical vibration comfort of large-span floor for Qingdao Training Center
Chi Chun1, Song Taowei1, Feng Yuan1, Liu Xiaoying1, Chen Jun2
(1 China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610081, China;
 2 Department of Structure Engineering, Tongji University, Shanghai 200092, China)
Abstract:The specific evaluation criteria of comfort and the corresponding design parameters are not specified in the current design codes. Based on the large-span floor of Qingdao Training Center, a lower limit control frequency of 3.3Hz was proposed as the basis for program selection. Finite element analysis results of nine different structural schemes were compared. Combined with other evaluation criteria, the large-span prestressed concrete floor was selected for structural design. To meet the requirements of vibration comfort, the onsite test was carried out, and the testing result is basically consistent with the theoretic analysis. It is proved that using the frequency as a control parameter for vibration comfort design is feasible.
Keywords:large-span floor; vertical vibration frequency; comfortable degree; finite element analysis; comprehensive comparison; dynamic parameters detection
作者簡介：遲春，高級工程師，Email：yuchch3322@sina.com。

參考文獻(xiàn)
［1］   JGJ99—98 高層民用建筑鋼結(jié)構(gòu)技術(shù)規(guī)程［S］. 北京：中國建筑工業(yè)出版社，1998.
［2］   CJJ69—95城市人行天橋與人行地道技術(shù)規(guī)范［S］.北京：中國建筑工業(yè)出版社，1995.
［3］   何文匯, 馬智剛. 組合樓板自振頻率的計(jì)算與試驗(yàn)研究［J］.工程設(shè)計(jì), 2005, 20 (3): 57-73.
［4］   Floor vibrations due to human activity(Steel design guide series 11)［S］. American Institute of Steel Construction，Canadian Institute of Steel Construction，1997.
［5］   ISO2631—2 Evaluation of human exposure to whole body vibration—Part 2: human exposure to continuous and shock-induced vibrations in buildings (1 to 80 Hz)［S］.International Standard Organization,1989.
［6］   JGJ7—91網(wǎng)架結(jié)構(gòu)設(shè)計(jì)與施工規(guī)程［S］.北京：中國建筑工業(yè)出版社，1991.
［7］   GB50017—2003鋼結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］.北京：中國計(jì)劃出版社，2003.
［8］   GB50010—2002混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］.北京：中國建筑工業(yè)出版社，2002.