摘要
对于高度超过150m且高宽比较大以及结构深宽比超过2的超高层建筑,由于《建筑结构荷载规范》(GB 50009—2012)对该类建筑的横风向风荷载计算缺乏相应的规定,因此荷载规范要求宜采用风洞试验进行补充验算。本项目采用目前国内外广泛应用的高频测力天平技术对武汉某183m高超高层剪力墙结构住宅建筑的模型进行了风洞试验,分析了结构的风振响应,并给出了该建筑物在不同风向角的风荷载作用下产生的基底反力和顶部加速度。将试验等效风荷载结果与按照荷载规范公式计算得到的结果进行对比分析,指出按照荷载规范公式进行结构抗风设计可能存在的问题,在结构设计中必要时可采用风洞试验对荷载规范进行补充验算以保证结构抗风设计的安全性。
Due to the lack of corresponding provisions for the calculation of across-wind load for the super high-rise buildings,which has a height of more than 150 meters,large height width ratio and depth width ratio of more than 2,in the Load code for the design of building structures(GB 50009—2012),wind tunnel tests should be used for supplementary verification according to the load code requirements.In this project,the high-frequency force balance technology which is widely used in domestic and foreign was used to conduct wind tunnel test on the model of a 183 meters super high-rise residential building with shear wall structure in Wuhan.The wind-induced vibration response of the structure was analyzed,and then the base force and top acceleration of the building under the wind load of different wind directions were given.The result of equivalent wind load was compared and analyzed with the result calculated according to the load code formula,and the possible problems in wind resistance design according to the load code formula were pointed out.In the structural design,wind tunnel test can be used to supplement and check the load code when necessary to ensure the safety of wind resistance design.
作者
郭立行
苗伟
梁洪超
楼文娟
GUO Lihang;MIAO Wei;LIANG Hongchao;LOU Wenjuan(Greenton Architecture Design Co.,Ltd.,Xiamen 361008,China;College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China)
出处
《建筑结构》
北大核心
2023年第12期98-102,共5页
Building Structure
关键词
超高层住宅
深宽比
风洞试验
高频测力天平
风振响应
等效风荷载
super high-rise residential building
depth width ratio
wind tunnel test
high-frequency force balance
windinduced vibration response
equivalent wind load
