884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（1 同濟(jì)大學(xué)，上海 200092；2 同濟(jì)大學(xué)建筑設(shè)計(jì)研究院，上海 200092；3 青島國信集團(tuán)，青島 266061）

［摘要］通過建立豎向振動(dòng)舒適度長期監(jiān)測系統(tǒng)，測試了青島體育中心綜合訓(xùn)練館大跨度混凝土樓蓋在主體結(jié)構(gòu)完成、木地板鋪設(shè)完成、整體結(jié)構(gòu)完成等4個(gè)典型階段的動(dòng)力特性；實(shí)測了在單人行走、多人齊步行走、多人跳躍、多人隨機(jī)及正常比賽訓(xùn)練等多種激勵(lì)情況下結(jié)構(gòu)樓面的加速度反應(yīng)，并與有限元分析及英國混凝土協(xié)會(huì)建議的計(jì)算方法（CCIP-016）進(jìn)行了比較。結(jié)果表明，大跨度樓蓋具有典型的模態(tài)密集特性，本例中木地板的剛度貢獻(xiàn)可以忽略。人致激勵(lì)的類型和行走路線對樓蓋動(dòng)力響應(yīng)影響顯著。CCIP-016的動(dòng)力響應(yīng)計(jì)算結(jié)果比實(shí)測值小。上述結(jié)果可為全面了解大跨度預(yù)應(yīng)力樓蓋的實(shí)際動(dòng)力性態(tài)、驗(yàn)證現(xiàn)有計(jì)算方法的合理性及類似建筑的舒適度評估提供依據(jù)。

［關(guān)鍵詞］大跨度樓蓋；豎向振動(dòng)；舒適度；動(dòng)力測試；有限元分析

中圖分類號：TU375.4文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2011)08-0115-05

Modal testing and vertical vibration serviceability analysis of large-span pre-stressed concrete floor of Training Hall in Qingdao Sport Center

Chen Jun¹, She Xiongxiong^1,2, Liu Qinsheng³(1 Tongji University，Shanghai 200092，China; 2 Architectural Design & Research Institute of Tongji University, Shanghai 200092, China; 3 Qingdao International Expo Center, Qingdao 266061，China)

Abstract:A permanent vibration serviceability monitoring system was installed on the post-tensioned concrete floor of Training Hall in Qingdao Sport Center. The measurement results for three distinct construction phases, from completion of main floor structure to fully open to the public, were summarized in terms of variation of dynamic properties and dynamic response due to different human-induced excitation like single person walking, multi-people marching and multi-people jumping. Furthermore, the dynamic properties of the floor were also computed through finite element analysis and simplified hand-calculation approaches suggested by CCIP-016. It is found that the large-span floor has very closely-spaced modes of vibration, and the contribution of wooden floor to the total floor stiffness is neglectable in this case. Type of human-induced excitation and the walking route has a significant effect on the floor responses. The dynamic responses calculated by CCIP-016 are smaller than that of the field measurements. Observations in this study are of significance for understanding the real dynamic properties of large-span post-tensioned floor, for verifying the applicability of current design method, and for being a reference for vibration serviceability assessment of similar structures.

Keywords:large-span floor; vertical vibration; serviceability; dynamic tests; finite element  analysis

作者簡介：陳雋，博士，副教授，博士生導(dǎo)師，Email:cejchen@#edu.cn。

參考文獻(xiàn)

［1］PAVIC A, REYNOLDS P, WALDRON P, et al. Critical review of guidelines for checking vibration serviceability of post-tensioned concrete floors ［J］. Cement & Concrete Composites，2001, 23(1): 21-31.

［2］The UK Concrete Society. The Concrete Society Technical report No. 43: Post tensioned-concrete floors design handbook ［M］. Camberley：the Concrete Society, 2007.

［3］WILLFORD M, YOUNG P. A design guide for footfall induced vibration of structures:CCIP-016［M］. The Concrete Center, 2006.

［4］李東，法永生，孫翠華，等. 某人行天橋人致振動(dòng)分析及其舒適度評價(jià)［J］. 建筑結(jié)構(gòu)，2008, 38(6): 50-53.

［5］黃健，婁宇，王慶揚(yáng). 多層體育健身場館樓蓋系統(tǒng)的舒適度設(shè)計(jì)［J］. 建筑結(jié)構(gòu)，2008, 38(8):102-105.

［6］朱鳴，張志強(qiáng)，柯長華，等. 大跨度鋼結(jié)構(gòu)樓蓋豎向振動(dòng)舒適度的研究［J］. 建筑結(jié)構(gòu)，2008，38(1):72-76.

［7］REYNOLDS P, PAVIC A. Effects of false floors on vibration serviceability of building floors. II: Response to pedestrian excitation［J］. J. of Performance of Constructed Facilities，2003, 17(2): 87-96.

［8］America Institute of Steel Construction. AISC Design guide 11: Floor vibration due to human activity ［M］. AISC, 1997.