复杂体型高层建筑风压分布及干扰效应研究  

Research on Wind Pressure Distribution and Interference Effect of Complex Tall Buildings

作　　者：刘行 钱长照 陈昌萍 胡海涛 陈秋华 张祥敏 LIU Xing;QIAN Changzhao;CHEN Changping;HU Haitao;CHEN Qiuhua;ZHANG Xiangmin(School of Architecture and Civil Engineering,Xiamen University,Xiamen 361000,China;Fujian Provincial Key Laboratory of Wind Disaster and Wind Engineering,Xiamen 361024,China)

机构地区：[1]厦门大学建筑与土木工程学院,厦门361000 [2]福建省风灾害与风工程重点实验室,厦门361024

出　　处：《结构工程师》2022年第1期93-101,共9页Structural Engineers

基　　金：国家自然科学基金项目(52178510)。

摘　　要：本文以厦门市某复杂体型高层建筑为研究对象,通过风洞试验并结合CFD数值模拟的方法,研究该单体建筑在有无周边环境干扰下的风压分布特征。结果表明:无周边环境干扰时,迎风面平均风压为正值,其余各面为负值,迎、背风面的脉动风压系数值较侧面小;有干扰时,干扰建筑对该高层建筑的平均风压及脉动风压影响较大。单体建筑容易受到周边环境的遮挡作用,并且并列建筑之间容易产生“狭管效应”,对风速有一定的加速效应,出现较大负压。来流风向对建筑表面局部风压影响较大,导致局部体型系数产生较大变化,气流在迎风面棱角处产生气流分离以及涡旋脱落,容易导致该区域形成高负压区。所得结论可为相应的工程围护结构设计提供参考。This paper takes a complex high-rise building in Xiamen as the research object.Through wind tunnel test and CFD numerical simulation method,the wind pressure distribution characteristics of the building with or without the surrounding environment interference is studied.The results show that when there is no interference from the surrounding environment,the average wind pressure on the windward side is positive,and the other sides are negative.The fluctuating wind pressure coefficients on the windward and leeward sides are smaller than the side;when there is interference,the average wind pressure of the interfering building against the high-rise building Wind pressure and fluctuating wind pressure have a greater impact.Single buildings are susceptible to the shielding effect of the surrounding environment,and the"narrow pipe effect"is likely to occur between the buildings,which has a certain acceleration effect on the wind speed,and a large negative pressure appears.The incoming wind direction has a greater impact on the local wind pressure on the building surface,leading to a large change in the local body coefficient.The separation of the airflow and the vortex shedding at the edges and corners of the windward surface will easily lead to the formation of a high negative pressure zone in this area.The conclusions obtained can provide references for the design of corresponding engineering envelopes.

关 键 词：高层建筑 风洞试验 CFD 风压系数 体型系数 

分 类 号：TU973.213[建筑科学—结构工程]