涂楠坤1,2，全涌1，顾明1，严志威1

（1 同济大学土木工程防灾国家重点实验室， 上海 200092； 2 绿地控股集团有限公司， 上海 200023）

［摘要］基于刚性模型的表面风压测量风洞试验，对一外附网架的超高层建筑的局部风压分布特性进行了分析，详细讨论了复杂周边环境和外附网架对近似椭圆形截面超高层建筑表面风压系数的影响。研究结果表明，外附网架会显著削弱迎风面和侧面上的风压系数均方根值以及侧面上的风压系数均值，但对迎风面上的风压系数均值影响不大；复杂周边环境会使建筑受遮挡区域表面的风压系数正极值明显降低，而从上游施扰建筑脱落的尾流有可能会增大目标建筑侧面的负风压系数极值。

［关键词］高层建筑; 复杂周边环境; 外附网架; 风压

中图分类号： TU973.2+13    文献标识码： A    文章编号： 1002-848X(2015)S2-0482-08

Analysis on wind pressures of a high-rise building with attached grid in complex environment

Tu Nankun1,2， Quan Yong1， Gu Ming1， Yan Zhiwei1

(1 State Key Laboratory for Disaster Reduction In Civil Engineering, Tongji University, Shanghai 200092, China；

2 Greenland Holding Group Co., Ltd., Shanghai 200023, China)

Abstract: With wind pressure measurement technique, the rigid model of an actual super-tall building with attached grid was tested to obtain local wind pressure distribution characteristics and aerodynamic interference effect of complex surroundings and attached grid on wind pressures of principle building with approximate ellipse cross section.The results indicate that the attached grids can obviously decrease most unfavorable negative coefficients of wind pressure, mean and RMS coefficients of local wind pressures on windward surfaces, but it faintly affects most unfavorable positive coefficients, mean and RMS coefficients of local wind pressures on side faces. Complex surroundings would significantly reduce the most unfavorable positive coefficient of the sheltering area of principle building, and the vortex shedding upstream intends to increase the absolute value of most unfavorable negative coefficients on side faces.

Keywords: high-rise building; the complex surrounding; attached grids; wind pressure

作者简介：涂楠坤，硕士，Email:243569261@qq.com。