钢框排架在风荷载作用下的动力响应分析  

Dynamic Response Analysis of Steel Frame Bent under Wind Load

作　　者：万顺路 李新宇 彭修宁[2] WAN Shunlu;LI Xinyu;PENG Xiuning(China Energy Engineering Group Guangxi Electric Power Design Institute Co.,Ltd.,Nanning,Guangxi,530007;College of Civil Engineering and Architecture,Guangxi University,Nanning,Guangxi,530004)

机构地区：[1]中国能源建设集团广西电力设计研究院有限公司,广西南宁530007 [2]广西大学土木建筑工程学院,广西南宁530004

出　　处：《红水河》2019年第5期59-63,共5页Hongshui River

基　　金：中国博士后科学基金(20080440814),地震作用下全焊钢框架异形节点破坏机理及加固方法研究

摘　　要：以某大型火电主厂房钢框排架结构为研究背景,采用ANSYS和MIDAS/GEN有限元软件建立了其脉动风速模型,分析了结构在静力风荷载和脉动风荷载作用下的受力状态,并分析结构在脉动风作用下的动力响应。结果表明:钢框排架的动力和位移时程响应表现出与脉动风荷载相似的随机性;考虑脉动风效应后,作用于结构上的风荷载峰值显著增大;脉动风作用下结构的最大位移和静力分析结果基本一致,等效静力风荷载作用于该结构产生的数值结果整体较实际情况偏大。Taking the steel frame bent structure of a large thermal power plant as the research background,the fluctuating wind speed model is established by using ANSYS and MIDAS/GEN finite element software.The stress state of the structure under static wind load and fluctuating wind load is analyzed,and the dynamic response of the structure under fluctuating wind load is analyzed.The results show that the dynamic and displacement time-history responses of steel frame bent are similar to those of fluctuating wind loads;the peak value of wind load acting on the structure increases significantly after considering the fluctuating wind effect;the maximum displacement of the structure under fluctuating wind is basically consistent with the results of static analysis;the numerical results of equivalent static wind load acting on the structure are larger than the actual situation.

关 键 词：钢框排架 风荷载 动力响应分析 有限元法 

分 类 号：TU312.1[建筑科学—结构工程]