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

（同濟大學(xué)土木工程防災(zāi)國家重點實驗室， 上海 200092）

［摘要］在閉口回流式風(fēng)洞TJ2中分別對阻塞度為41%,61%,84%,101%的單體高層建筑剛性模型進行了測壓試驗，根據(jù)風(fēng)洞試驗結(jié)果，選取3種典型結(jié)構(gòu)進行響應(yīng)計算，以研究阻塞效應(yīng)對不同結(jié)構(gòu)風(fēng)致響應(yīng)的影響。對結(jié)構(gòu)頂部位移和加速度、基底剪力、等效靜力風(fēng)荷載進行了細致分析。結(jié)果表明：各結(jié)構(gòu)順風(fēng)向頂部位移和基底剪力平均值的阻塞效應(yīng)較為接近，但順風(fēng)向、橫風(fēng)向頂部位移、加速度和基底剪力均方根的阻塞效應(yīng)較為顯著，且差別較大。隨著阻塞度的增大，結(jié)構(gòu)質(zhì)量越輕、剛度越柔，橫風(fēng)向頂部位移、加速度和基底剪力的均方根的阻塞效應(yīng)均有所降低。各結(jié)構(gòu)順風(fēng)向等效靜力風(fēng)荷載峰值在頂部和底部處的阻塞效應(yīng)較為明顯。結(jié)構(gòu)質(zhì)量越輕，剛度越柔，建筑頂部附近的順風(fēng)向等效靜力風(fēng)荷載峰值的阻塞效應(yīng)增強，而橫風(fēng)向等效靜力風(fēng)荷載峰值的阻塞效應(yīng)減弱。

［關(guān)鍵詞］風(fēng)洞試驗； 高層建筑； 阻塞效應(yīng)； 風(fēng)致響應(yīng)

中圖分類號：TU 317+.1，TU 973+.32      文獻標識碼：A      文章編號：1002-848X(2015)02-0063-07

Blockage effect on windinduced response of single rectangular highrise building in uniform flow

Huang Jian， Gu Ming

 (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)

Abstract:Pressure measurement tests of single high\|rise building rigid model whose blockage ratios were 41%, 61%, 84% and 101% were respectively carried out in the closed circuit wind tunnel of TJ2. Based on the test results, windinduced responses of three typical structures were calculated to study blockage effects. Displacement and acceleration on the top, base shear force and the equivalent static wind load were analyzed in detail. Results show that blockage effects on mean values of top displacement and base shear force of three kinds of structure in the along wind direction are similar, but  those on rootmeansquare of top displacement, acceleration and base shear force in both along and across wind directions are more conspicuous and their differences among three kinds of structure are significant. With the  increase of blockage ratio, blockage effects on rootmeansquare of  top displacement, acceleration and base shear force in the across wind direction  are less severe when the structure is lighter and more flexible. The peak of  equivalent static wind load near the top and base of the all three typical structures in the along wind direction  have obvious blockage effects. If the structure is lighter and more flexible, the blockage effects are more severe on the peak of equivalent static wind load near the top in the along wind direction and are weaker in the across wind direction.

Keywords:wind tunnel test; highrise building; blockage effect; windinduced response

*國家自然科學(xué)基金重大研究計劃項目（91215302，90715040）。

作者簡介：黃劍,博士研究生,Email: huangjiannt@126.com。

參考文獻

［1］HUNT A. Windtunnel measurements of surface pressures on cubic building models at several scales［J］. Journal of Wind Engineering and Industrial Aerodynamics， 1982, 10(2): 137163.

［2］TAKEDA K, KATO M. Wind tunnel blockage effects on drag coefficient and windinduced vibration［J］. Journal of Wind Engineering and Industrial Aerodynamics， 1992, 42(13): 897908.

［3］LANEVILLE A, TREPANIER J Y. Blockage effects in smooth and turbulent flows: The case of twodimensional rectangular cylinders［J］. Journal of Wind Engineering and Industrial Aerodynamics， 1986, 22(23): 169176.

［4］LANEVILLE A. Turbulence and blockage effects on two dimensional rectangular cylinders［J］. Journal of Wind Engineering and Industrial Aerodynamics， 1990, 33(12): 1120.

［5］NODA M, UTSUNOMIYA H, NAGAO F. Basic study on blockage effects in turbulent boundary layer flows［J］. Journal of Wind Engineering and Industrial Aerodynamics， 1995, 54/55: 645656.

［6］BLACKBURN H M. Effect of blockage on spanwise correlation in a circular cylinder wake［J］.

Experiments in Fluids, 1994, 18(1\|2):134\|136.

［7］謝壯寧，劉帥，石碧青. 低矮房屋標準模型的風(fēng)洞試驗研究［J］. 華南理工大學(xué)學(xué)報：自然科學(xué)版，2011, 39(6): 106112.

［8］王磊，梁樞果，鄒良浩，等. 阻塞效應(yīng)對高層建筑風(fēng)洞試驗的影響分析［J］. 實驗力學(xué), 2013, 28(2): 261268.

［9］黃劍，顧明. 均勻流中矩形高層建筑脈動風(fēng)壓的阻塞效應(yīng)試驗研究［J］. 振動與沖擊, 2014, 33(12): 2834.

［10］JGJ 3—2010 高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程［S］. 北京：中國建筑工業(yè)出版社，2011.

［11］GB 50009—2012 建筑結(jié)構(gòu)荷載規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2012.

［12］SUDA K, SATAKE N, ONO J, et al. Damping properties of buildings in Japan［J］. Journal of Wind Engineering and Industrial Aerodynamics， 1996, 59(2): 383392.

［13］TAMURA Y, SUDA K, SASAKI A. Damping in buildings for wind resistant design［C］//Proceedings of the International Symposium on Wind and Structures for the 21st Century. Cheju, Korea, 2000.

［14］曹會蘭. 基于單自由度氣動彈性模型風(fēng)洞試驗的超高層建筑氣動阻尼研究［D］. 上海: 同濟大學(xué), 2012.

［15］張正維. 高層建筑風(fēng)荷載特性及抗風(fēng)氣動措施研究［D］. 上海: 同濟大學(xué), 2012.

［16］CLOUGH R W，PENZIEN J. Dynamics of structures［M］. New York:Mc Graw\|Hill, 1993.

［17］全涌，陳斌，顧明. 大高寬比方形截面高層建筑的橫風(fēng)向風(fēng)荷載及風(fēng)致響應(yīng)研究［J］. 建筑結(jié)構(gòu), 2010, 40(2): 8992.