建筑结构学报2018，Vol.39Issue(1)：1-10,10.DOI:10.14006/j.jzjgxb.2018.01.001
低矮建筑表面破坏性旋涡及其诱导的风压特性研究综述
Review of destructive vortices and vortex-induced wind pressures on low-rise buildings
摘要
Abstract
Columnar vortex and conical vortices are two destructive vortices frequently occurred on low-rise buildings.Under their influence,local intense suctions are induced on roofs of low-rise buildings,and finally the whole buildings encounter failure.Therefore,in order to reduce the loss of low-rise buildings caused by wind load,comprehension of vortices and the induced wind pressures is the primary task.A series of research have been conducted at home and abroad.In this paper,researches on characteristics of vortices,the vortex-induced wind pressures and the generation mechanism of severe suction under vortices are investigated and summarized.Results indicate that wind pressures distributions induced by columnar vortex and conical vortices can be represented by respective fitting equation.Characteristics of vortex-induced pressure fluctuations are usually investigated on time and frequency domain.In order to obtain the generation mechanism of severe suction,characteristics of measured wind pressures in time and frequency domain,combined with the vortex theory,are used to deduce the mechanism.Furthermore,researches have been conducted to measure the velocity in vortices so as to improve the existing vortex model.Based on this,preliminary investigations of the quantitative relationship between the vortices and the induced peak suctions have been carried out.关键词
低矮建筑/柱状涡/锥形涡/风压分布/风压脉动Key words
low-rise building/columnar vortex/conical vortex/wind pressure distribution/wind pressure fluctuation分类
建筑与水利引用本文复制引用
董欣,叶继红,丁洁民..低矮建筑表面破坏性旋涡及其诱导的风压特性研究综述[J].建筑结构学报,2018,39(1):1-10,10.基金项目
国家自然科学基金青年基金项目(51408353),上海市青年科技启明星计划(15QB1404800). （51408353）
