复杂多连体大跨度结构的风压与等效静风荷载模拟和分析

Simulation and Analysis of Wind Pressure and Equivalent Static Wind Loads of Multi-Body Structure with Complex Shape

以上海世博会后的世博博物馆"欢庆之云"复杂形体大跨度新建工程为背景对象,运用数值模拟方法,研究在不同风向角来风且存在周边建筑风场干扰的情形下,表面曲率多变的多连体大跨空间建筑结构的表面风压、阵风系数和等效静风荷载.对风压云图和分区域风压系数进行了分析,并基于峰值因子法求解阵风系数,进而提出了考虑最不利风向角的等效静风荷载.

Taking the great building ＂Clouds of Celebration＂ which is a part of Shanghai World Expo Muse- um as the object, numerical simulation techniques were utilized to investigate the wind pressure distribu- tion, the gust factors （GFs） and the equivalent static wind loads （ESWL） of the complex multi-body spa- tial structure with consideration of mutual interference of wind fields around surrounding buildings under different incoming wind directions. Besides, the wind pressure nephograms and local zone pressure coeffi- cients were discussed, the gust factors were obtained by means of the peak factor method, and the ESWL were determined, taking the most unfavorable incoming wind directions into account.