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

 (中國(guó)建筑科學(xué)研究院建筑安全與環(huán)境國(guó)家重點(diǎn)實(shí)驗(yàn)室， 北京 100013)

［摘要］結(jié)合風(fēng)洞同步測(cè)壓試驗(yàn)，利用高效的廣義坐標(biāo)合成法分析了某連體高層空中連廊的風(fēng)振特性。采用塔樓連廊的整體結(jié)構(gòu)模型進(jìn)行計(jì)算，可充分考慮塔樓運(yùn)動(dòng)對(duì)連廊的影響。計(jì)算結(jié)果表明，連廊的運(yùn)動(dòng)主要是由于塔樓主體運(yùn)動(dòng)引起的，連廊自身風(fēng)壓對(duì)其風(fēng)致響應(yīng)的貢獻(xiàn)極??；兩座塔樓的相對(duì)運(yùn)動(dòng)與橫梁的軸力有很強(qiáng)的相關(guān)性，是造成橫梁受拉壓的主要因素。分析表明，不管連廊與主體之間采用何種連接方式，都不宜將空中連廊作為獨(dú)立結(jié)構(gòu)計(jì)算其風(fēng)振特性。采用的整體分析方法對(duì)于分析連體高層主體及連廊的風(fēng)致振動(dòng)具有普遍的適用性。

［關(guān)鍵詞］空中連廊； 風(fēng)洞試驗(yàn)； 風(fēng)致振動(dòng)； 同步測(cè)壓； 廣義坐標(biāo)合成法

中圖分類(lèi)號(hào)：TU311.3，TU973.2+13       文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2015)02-0057-06

Windinduced vibration analysis method of the skybrige in connected tall buildings

Chen Kai, Fu Longbiao, He Lianhua, Xiao Congzhen

（State Key Laboratory for Building Safety and Environment, China Academy of

Building Research, Beijing 100013, China）

Abstract:On the basis of wind pressure data obtained from the wind tunnel test, the windinduced vibration characteristics of the skybrige in connected tall buildings were investigated by the highefficiency generalized coordinates synthesis method. The whole structural model composed of the skybridge and main towers was employed to take  the effect of the tower movement on the skybridge into account. The results show that the movement of the skybridge is primarily induced by the tower vibration and the wind pressure on the skybridge has little effect on its own windinduced vibration. The axial forces in the main beams of the skybridge present strong correlation with the towers′ movement, and the relative movement of the two towers is the major cause of the axial forces in the  main beams of skybridge. The comparison results demonstrate that the skybridge should not be regarded as an independent structure in windinduced response analysis no matter which connection way is adopted. The analysis method with the whole structural model  can be applied to  the analysis on wind\|induced vibration of connected tall buildings and relevant skybridge.

Keywords:skybridge; wind tunnel test; windinduced vibration; synchronous pressure measurement; generalized coordinates synthesis method

*國(guó)家科技支撐計(jì)劃項(xiàng)目（2012BAJ07B01）。

作者簡(jiǎn)介：陳凱，博士，研究員，Email: chenkai@cabrtech.com。

參考文獻(xiàn)

［1］XIE Z N, GU M. Simplified formulars for evaluation of windinduced interference effects among three tall buildings［J］. Journal of Wind Engineering and Industrial Aerodynamics, 2007,95(1): 3152.

［2］侯家健，韓小雷，謝壯寧. 復(fù)雜連體雙塔高層建筑的風(fēng)荷載特性［J］. 華南理工大學(xué)學(xué)報(bào):自然科學(xué)版， 2008, 36(3): 121127.

［3］LIM J, BIENKIEWICZ B, RICHARDS E. Modeling of structural coupling for assessment of modal properties of twin tall buildings with a skybridge［J］. Journal of Wind Engineering and Industrial Aerodynamics， 2011, 99(5): 615623.

［4］XIE J, IRWIN P A. Windinduced response of a twintower structure［J］. Wind and Structures, 2001, 4(6): 495504.

［5］徐自國(guó)，肖從真，廖宇飚，等. 北京當(dāng)代MOMA隔震連體結(jié)構(gòu)的整體分析［J］. 土木工程學(xué)報(bào)，2008，41(3): 5357.

［6］施宇，張俏，張國(guó)慶. 高層建筑屋頂鋼結(jié)構(gòu)連廊設(shè)計(jì)［J］. 建筑結(jié)構(gòu)，2009，39(6): 9192.

［7］鄭毅敏，程雄濤，陳偉，等. 大跨度高空弧形連廊模型風(fēng)洞試驗(yàn)研究［J］. 同濟(jì)大學(xué)學(xué)報(bào)：自然科學(xué)版, 2007，35(9): 11971203.

［8］程雄濤. 大跨度高空連廓風(fēng)荷載及風(fēng)振響應(yīng)研究［D］. 上海：同濟(jì)大學(xué), 2007.

［9］陳凱，符龍彪，錢(qián)基宏，等. 風(fēng)振響應(yīng)計(jì)算的新方法廣義坐標(biāo)合成法［J］. 振動(dòng)與沖擊，2012, 31(3): 172178.

［10］陳凱，符龍彪，錢(qián)基宏，等. 基于荷載效應(yīng)的結(jié)構(gòu)抗風(fēng)設(shè)計(jì)方法研究［J］. 建筑結(jié)構(gòu)學(xué)報(bào), 2012, 33(1): 2734.