理論研究 2024年 第53卷 第21期
DOI: 10. 7672 / sgjs2024210123
基于風洞試驗的雙曲面超高層建筑風壓特性分析
蔣家園
作者簡介：
蔣家園，工程師，E?mail: 304411529@ qq. com作者單位：
中鐵十八局集團有限公司，天津 300222基金項目：
?中鐵十八局集團有限公司科技創新項目（G21?09）摘要：
依托迪拜藍天酒店工程，采用風洞試驗方法，研究雙曲面超高層建筑外立面極值風壓分布特性。根據建筑外立面支撐面積，給出支撐面積折減系數。根據不同的荷載組合，給出角部風荷載組合系數，通過疊加外立面風壓塊，可確定對應的風荷載。研究結果表明，超高層建筑造型復雜的外立面及立面交界拐角位置極值風壓較大，這是由建筑外形突變和來流風繞流效應引起的，在設計過程中應重點考慮相應區域建筑外立面抗風性能。
English：
Taking the Ciel Tower in Dubai project as the background,wind tunnel tests are used toanalyze the extreme wind pressure on the exterior surfaces of a hyperbolic super tall building. Thereduction coefficient for the supporting area of the building’s facade is obtained based on the supportingarea. Combination coefficients of wind load at corners are given based different load combinations, andthe corresponding wind loads can be determined by superimposing wind pressure blocks on the exteriorsurfaces. The research results show that the extreme wind pressures are large in the areas with complexshapes and the intersections of facades at corners of super tall buildings,which is caused by the abruptchanges of the building shape and the flow effect of the incoming wind. In the design process, attentionshould be paid to the surface wind resistance performance of the corresponding area.