摘要
在实际工程中,圆形截面类高耸建(构)筑物在稳定的脉动风流作用下,当尾迹流区域漩涡发落频率接近结构自身固有频率时,易发生涡激共振效应,涡激共振的发生对结构的安全性及耐久性损伤较大,严重时可导致结构失效破坏,为分析此类高耸建筑的风振响应,本研究以某实际钢筋混凝土烟囱为研究对象,在静力计算基础上运用Comsol软件进行仿真,分析此类高耸建筑在风荷载下的动力响应及流固耦合作用机理,提出圆形截面类高耸建(构)筑物降低涡激共振损伤的方法,对工程应用具有一定借鉴意义。
In practical engineering,slender structures with circular cross-sections are prone to vortex-induced resonance effects when the vortex shedding frequency in the wake flow region is close to the structure's natural frequency under the action of stable pulsating wind flow.The occurrence of vortex-induced resonance can significantly damage the structural safety and durability,and in severe cases,it can lead to structural failure.To analyze the wind-induced vibration response of such slender structures,this paper takes an actual reinforced concrete chimney as the research object.Based on static calculations,the Comsol software is used for simulation to analyze the dynamic response and the mechanism of fluid-structure interaction of such slender structures under wind loads.Methods to reduce vortex-induced resonance damage for circular cross-section slender buildings(structures)are proposed,which have certain reference significance for engineering applications.
作者
罗穿云
郑佳明
王辰明
LUO Chuan-yun;ZHENG Jia-ming;WANG Chen-ming(Zhongzhen Tiankai(Beijing)Engineering Technology Co.,Ltd.,100080,Beijing,China)
出处
《建筑技术》
2025年第22期2759-2761,共3页
Architecture Technology
关键词
高耸建筑
风荷载
动力响应
涡激共振
tall building
wind load
dynamic response
vortex-induced resonance
