阶梯退缩形高层建筑表面脉动风压非高斯特性及峰值因子研究  

Research on the non-Gaussian features and peak factors of fluctuating wind pressure on shrinkage high-rise buildings

作　　者：张建国[1] 丁林 何钰皓 ZHANG Jianguo;DING Lin;HE Yuhao(School of Architecture and Civil Engineering of Xiamen University,Xiamen 361005)

机构地区：[1]厦门大学建筑与土木工程学院,福建厦门361005

出　　处：《福建建筑》2025年第2期43-47,119,共6页Fujian Architecture & Construction

基　　金：福建省自然科学基金项目(2018J01085)。

摘　　要：高层建筑表面的脉动风压特性,对玻璃幕墙的抗风安全性设计起着至关重要的作用。为此进行阶梯退缩形高层建筑模型在B类和D类两种风场中的同步测压风洞实验,分别计算各测点脉动风压的偏度和峰度。基于偏度和峰度值,划分了建筑表面脉动风压的高斯区和非高斯区,并总结分布规律。使用三参数Hermite级数法和全概率迭代法计算非高斯区内部测点脉动风压的峰值因子。研究结论如下:迎风面既有正偏又有负偏,侧风面和背风面绝大部分区域均为负偏;迎风面绝大部分为高斯区域,仅在D类风场中小部分区域为非高斯区域,侧风面与背风面绝大部分区域为非高斯区域;D类风场的非高斯特性比B类风场更显著。The fluctuating pressure on high-rise buildings plays an important role in anti-wind design of glass curtain wall.In this paper,synchronous pressure measurement wind tunnel tests of a shrinkage high-rise building model in two wind fields of Category B and D are carried out,and the skewness and kurtosis are calculated respectively by processing the obtained data.Based on the skewness and kurtosis of wind pressure time history obtained,the Gaussian and non-Gaussian zones of wind fluctuating pressure on building surface are divided.Distribution rules are summarized.Wind pressure time-history peak factors at some measuring points in non-Gaussian area are calculated by using three-parameter Hermite model and full probability iteration method.The following conclusions can be drawn:The windward side has both positive and negative skewness,and most zones of the crosswind and leeward surfaces are negatively skewed.The windward surface is mostly Gaussian zones,and only a small part of the lower part of the category D wind field is non-Gaussian zones.Most zones of crosswind and leeward surfaces are non-Gaussian zones.Non-Gaussian features of category D are more significant than that of category B.

关 键 词：阶梯退缩形高层建筑 脉动风压 非高斯特性 全概率迭代法 三参数Hermite级数法 峰值因子 

分 类 号：TU3[建筑科学—结构工程]