干扰下方形超高层建筑风压的非高斯特性研究  

Non-Gaussian Feature of Wind Pressure on Square Super High-Rise Buildings Under Disturbance

作　　者：何书勇 刘庆宽 张同亿[4] 郑云飞 王熙 付赛飞 HE Shuyong;LIU Qingkuan;ZHANG Tongyi;ZHENG Yunfei;WANG Xi;FU Saifei(School of Civil Engineering,Shijiazhuang Tiedao University Shijiazhuang,050043,China;State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang Tiedao University Shijiazhuang,050043,China;Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province Shijiazhuang,050043,China;China IPPR International Engineering Co.,Ltd.Beijing,100089,China;Department of Railway Engineering,Shijiazhuang Institute of Railway Technology Shijiazhuang,050041,China)

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室,石家庄050043 [3]河北省风工程和风能利用工程技术创新中心,石家庄050043 [4]中国中元国际工程有限公司,北京100089 [5]石家庄铁路职业技术学院铁道工程系,石家庄050041

出　　处：《振动．测试与诊断》2022年第2期249-255,405,共8页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51778381);河北省自然科学基金资助项目(E2018210044);河北省高端人才资助项目(冀办[2019]63号);河北省研究生创新资助项目(CXZZSS2020065)。

摘　　要：借助刚性模型测压试验,对干扰状态下的方形超高层建筑表面风压的非高斯特性进行研究。给出非高斯测点数量干扰因子IF和非高斯测点数量占建筑总测点数的比例Q,来分析建筑表面风压非高斯特性受干扰的影响程度。以串列和并列布置为例,对受扰建筑表面风压的非高斯区域进行划分,并给出其风荷载建议值。结果表明:参数Q和IF能够准确地描述受扰建筑表面风压非高斯区域的大小及其受干扰的影响程度,并确定了受扰建筑表面风压非高斯特性最明显时施扰建筑的位置;串列和并列布置下,施扰建筑对受扰建筑各表面风压非高斯区域的发生位置以及大小均产生不同程度的影响;考虑了受扰建筑表面风压的非高斯特性,给出串列和并列布置下受扰建筑表面风荷载极大负值随间距变化的拟合公式,结果可为此类结构的抗风设计提供参考。Through the rigid model pressure test,the non-Gaussian feature of the surface wind pressure of the square super high-rise building under the interference state is studied.The parameters IF(interference factor of the number of non-Gaussian measuring points)and Q(the proportion of the number of non-Gaussian measuring points in the total measuring points on the building surface)are given to analyze the influence of the non-Gaussian wind pressure on the building surface by interference.Taking tandem and parallel arrangements as an example,it divides the non-Gaussian area of the disturbed building surface wind pressure under the tandem and parallel arrangements and gives the recommended extreme wind load values.The results show that the parameters Q and IF can accurately describe the size of the non-Gaussian area of the disturbed building′s surface wind pressure and the extent of the disturbance,and determine the location of the disturbing building when the non-Gaussian surface wind pressure of the disturbed building is most obvious;The disturbing buildings in the tandem arrangement and juxtaposition will have varying degrees of impact on the location and the size of the wind pressure non-Gaussian zone on each surface of the disturbed building;Finally,the non-Gaussian feature of the wind pressure on the surface of the disturbed building is considered,and the fitting formula of the maximum negative value of the wind load on the surface of the disturbed building in the tandem and parallel arrangement is given.Hence,the result can provide a reference for the wind-resistant design of such structure.

关 键 词：高层建筑 风洞试验 干扰效应 非高斯特性 风荷载 

分 类 号：TU972.9[建筑科学—建筑设计及理论] TU201.1