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某超高層建筑風(fēng)洞測壓試驗(yàn)*

李正良， 陳勝(重慶大學(xué)土木工程學(xué)院，重慶 400030)

［摘要］依據(jù)某超高層建筑，著重介紹了風(fēng)洞試驗(yàn)的方法，描述了在考慮有、無環(huán)境建筑影響下，該高層建筑一些典型的表面風(fēng)壓特性以及一些測點(diǎn)風(fēng)壓隨風(fēng)向角的變化規(guī)律。結(jié)果表明：迎風(fēng)面中上部風(fēng)壓系數(shù)較大，接近1.0；底部部分風(fēng)壓系數(shù)達(dá)到1.0；側(cè)風(fēng)面和背風(fēng)面風(fēng)壓系數(shù)大多為負(fù)值，特別是靠近角落處由于渦旋脫落，其值可達(dá)到-2。環(huán)境建筑對該高層建筑表面風(fēng)壓的影響較大，特別在建筑中下部。為其進(jìn)行結(jié)構(gòu)設(shè)計(jì)提出一些參考。

［關(guān)鍵詞］高層建筑；表面風(fēng)壓；風(fēng)洞試驗(yàn)

中圖分類號：TU312.1,TU973文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2011)01-0131-04

Test study on the wind pressure distribution of a super high-rise building

Li Zhengliang, Chen Sheng

(College of Civil Engineering, Chongqing University, Chongqing 400030, China)

Abstract:Taking an example of a super high-rise building, the wind tunnel test was introduced. The typical characteristics of the surface wind pressure and the  variation rules of the wind pressure were described according to the wind direction under the condition of surrounding buildings being considered or not. The results show that the wind pressure is bigger in the top of the windward, approaching to 1.0, it is smaller in the bottom, about 1.0 and it becomes negative in the crosswind and lee side, especially in the corner nearby where the vortex falls off, with a value close to -2. The surface wind pressure on the high-rise building is greatly influenced by the surrounding buildings, which is especially obvious in the lower part of it. Suggestions are given to the design of this kind of structures.

Keywords:high-rise building; surface wind pressure; wind tunnel test

*國家自然科學(xué)基金（90715024）。

作者簡介：李正良，教授，博士生導(dǎo)師，Email:lizhengl@hotmail.com。

參考文獻(xiàn)

［1］中國空氣動力研究與發(fā)展中心.脈動壓力測量管路研究報告［R］. 2002.

［2］李正良，晏致濤，王承啟，等. 重慶大劇院風(fēng)洞模擬試驗(yàn)與分析研究報告［R］.重慶：重慶大學(xué)土木工程學(xué)院，2006.

［3］黃本才. 結(jié)構(gòu)抗風(fēng)分析原理及應(yīng)用［M］. 上海：同濟(jì)大學(xué)出版社，2001.

［4］埃米爾·西繆，羅伯特·H·斯坎倫. 風(fēng)對結(jié)構(gòu)的作用［M］. 劉尚培，等，譯. 上海：同濟(jì)大學(xué)出版社，1992.