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吳耀輝¹   楊  芃¹   趙憲波¹   朱鳳榮²
（1 中國電子工程設(shè)計(jì)院 北京 100840； 2 北京大學(xué)湍流與復(fù)雜系統(tǒng)國家重點(diǎn)實(shí)驗(yàn)室 北京 100871）

[摘要] 北辰B5區(qū)公建是一體型復(fù)雜的大底盤雙塔樓建筑，為準(zhǔn)確地把握建筑物的風(fēng)載體型系數(shù)和風(fēng)壓值，對其進(jìn)行了風(fēng)洞試驗(yàn)。詳細(xì)介紹了風(fēng)洞模擬試驗(yàn)的相似條件和試驗(yàn)方法，并給出了不同風(fēng)向角下建筑的風(fēng)壓分布規(guī)律，通過試驗(yàn)得出：兩個(gè)曲面塔樓結(jié)構(gòu)，其基本呈低層風(fēng)載荷小、高層風(fēng)載荷大的特點(diǎn)：在雙塔樓內(nèi)側(cè)相當(dāng)面積上，由于夾道風(fēng)的原因，出現(xiàn)了無論何種風(fēng)向角都為負(fù)壓的現(xiàn)象；在建筑的各個(gè)拐角處，由于氣流流動復(fù)雜，其風(fēng)壓值一般較其他位置偏大，在結(jié)構(gòu)設(shè)計(jì)中應(yīng)予以考慮。
[關(guān)鍵詞] 雙塔風(fēng)洞試驗(yàn)；風(fēng)載體型系數(shù)；風(fēng)壓分布

    Study of the Wind Tunnel Test on the North Star B5 Public Building
    Wu Yaohui¹, Yang Peng¹, Zhao Xianbo¹, Zhu Fengrong²
    1 China Electronics Engineering Design Institute, Beijing 100840,  China;
    2 State Key Laboratory for Turbulence and Complex System, Peking University,  Beijing 100871,  China

Abstract: The public building in B5 plot developed by Beijing North Star Real Estate Co., Ltd. is a complicated twin tower structure resting on a united basement.The wind tunnel test was carried out. The effectiveness and test method of the simulated wind tunnel test are presented iIl detail. The wind pressure distribution pattern is obtained under different wind angles. The results show that greater wind load is found at higher stories of the two towers with curved surfaces.  Due to the airflow between the two towers, negative pressure is found on a considerable area of the inner side of the two towers no matter what the wind angle is. Higher wind pressure is found at the corners of the structure compared to other locations due to the coruplicated airflow there.
Keywords: twin tower;  wind tunnel test;  shape factor;  wind pressure distribution