为研究连廊的强、弱连接对连体双塔超高层风振响应的影响，分别建立了强、弱连接双塔连体超高层风振响应分析的简化数学模型；基于工程实例（其结构高度分别为268 m和210.2 m），分析了在两种连接情况下结构的自振特性；最后，开展了该结构在24个风向角下的同步多点测压风洞试验，分析并对比了不同连接形式下的风振响应。研究表明：强连接形式可以减小大多数风向角下两栋建筑的峰值加速度响应，对低栋建筑的风振加速度响应减小效果要优于高栋建筑；强连接形式也可以减小几乎所有风向角下高栋建筑的峰值位移响应，低栋建筑的位移响应会被高栋建筑所主导，导致两栋建筑的峰值位移方向相同。研究的结果为连体超高层建筑抗风设计提供参考。
Abstract
Here, in order to study effects of strong and weak connections of corridor on wind-induced vibration responses of twin-tower super high-rise buildings, firstly, simplified mathematical models for wind-induced vibration response analysis of twin-tower connected super high-rise buildings with strong and weak connections were established, respectively. Secondly, based on the engineering example (two-tower heights are 268 m and 210.2 m, respectively), natural vibration characteristics of structures with two connection modes were analyzed. Finally, wind-induced vibration responses of the structure with two connection forms were estimated according to results from wind tunnel tests of synchronous multi-point pressure measurements of the buildings under 24 wind directions. The results showed that the strong connection form can reduce peak acceleration responses of two towers under most wind direction, and the reduction effect of wind-induced vibration acceleration response on lower tower is better than that on higher tower; the strong connection form can also reduce peak displacement responses of higher tower under almost all wind direction, and displacement responses of lower tower can be dominated by higher tower which cause peak displacements of two towers in the same direction; the study results can provide a reference for anti-wind design of connected super high-rise buildings.
关键词
连体双塔超高层建筑 /
连接强度 /
风致响应 /
风洞试验
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Key words
twin-tower connected super high-rise building /
strength of linkage /
wind-induced response /
wind tunnel tests
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