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（南京航空航天大學(xué)航空宇航學(xué)院， 南京 210016）

［摘要］針對(duì)復(fù)雜體型和有氣動(dòng)干擾下超高層多塔連體建筑的風(fēng)致響應(yīng)和等效風(fēng)荷載問題，以某超高層三塔連體建筑為工程背景，首先在大型邊界層風(fēng)洞中模擬的B類風(fēng)場(chǎng)、兩種工況共72個(gè)風(fēng)向角下對(duì)其進(jìn)行了剛體模型測(cè)壓試驗(yàn)，采集了該建筑表面的脈動(dòng)風(fēng)壓時(shí)程，并基于已提出的可完全考慮背景、共振及其耦合項(xiàng)的風(fēng)振精細(xì)化計(jì)算方法“一致耦合法”，完成了主塔建筑在單體和考慮周邊多塔干擾兩種工況下的風(fēng)致響應(yīng)分析，得到了主塔頂部的位移、加速度響應(yīng)、基底內(nèi)力和位移風(fēng)振系數(shù)；同時(shí)對(duì)該建筑進(jìn)行了不同重現(xiàn)期、風(fēng)向角和阻尼比時(shí)的層等效靜風(fēng)荷載（ESWLs）研究；最終探討了超高層三塔連體建筑風(fēng)效應(yīng)的干擾作用機(jī)理。試驗(yàn)方法、計(jì)算理論和主要研究結(jié)論可作為此類超高層多塔連體建筑抗風(fēng)設(shè)計(jì)的參考依據(jù)。

［關(guān)鍵詞］超高層多塔連體建筑； 風(fēng)洞試驗(yàn)； 等效靜力風(fēng)荷載； 風(fēng)致響應(yīng)； 干擾效應(yīng)

中圖分類號(hào)：TU973.2+13， TU312+-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)21-0103-06

Study on wind-induced response and equivalent static wind loads of super-tall multi-tower connected building based on wind tunnel tests

Wang Hao，Ke Shitang

(College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

Abstract:Aiming at the problem of wind-induced response and equivalent wind load of super-tall multi-tower connected building with complex shape and aerodynamic disturbance, a super-tall three-tower connected building was taken as the engineering background. The rigid-body model pressure test was carried out in the large-scale boundary layer wind tunnel under the simulated B-type wind field and 72 wind directions under two working conditions. The time-history of fluctuating wind pressure on the building surface was collected. Based on the proposed “uniform coupling method” which can consider the background, resonance and coupling terms of wind vibration, the wind-induced response analysis of the main tower building under two working conditions of single tower and multi-tower interference was completed. The displacement, acceleration response, internal force and displacement wind-induced vibration coefficients at the top of the main tower were obtained, and the equivalent static wind loads (ESWLs) at different recurrence periods, wind direction angles and damping ratios were studied. Finally, the interference mechanism of wind effect on the super-tall three-tower connected building was discussed. The test method, calculation theory and main conclusions  could be used as reference for wind resistance design of super-tall multi-tower connected buildings.

Keywords:super-tall multi-tower connected building; wind tunnel test; equivalent static wind load; wind-induced responses; interference effect

*國家自然科學(xué)基金（51878351,51761165022,U1733129），江蘇省研究生科研與實(shí)踐創(chuàng)新計(jì)劃項(xiàng)目（KYCX18_0244)。

通訊作者：柯世堂，博士，教授， Email：keshitang@163.com。