摘要
为研究设备在结构顶层作用位置对设备-结构耦合体系动力相互作用的影响,设计了3个不同设备作用位置工况,建立了ANSYS有限元空间分析模型,对设备-结构相互作用体系进行了小震、中震和大震阶段的地震时程反应分析。分析了不同震级作用下设备作用位置引起的结构与设备的地震反应变化,并对比分析了楼面反应谱法与时程分析法下的设备地震作用。分析结果表明:设备在结构顶部楼层中位置的变化对设备-结构体系的影响,与结构输入地震波烈度和设备在结构楼层偏心大小密切相关,其影响随输入地震波烈度的增大而减小,随设备偏心增大而增大;楼面反应谱法下的设备动力计算偏于保守。
In order to study the influence of positions of equipment on dynamic interaction of the equipment-structure coupling system,this paper designed three different operating conditions of equipments.A finite element spatial analysis model was established by using ANSYS program.Seismic time-history response analysis of small earthquakes,medium earthquakes and large earthquakes was carried out in equipment-structure interaction systems.The change of seismic response of structures and equipments under different magnitudes was analyzed,and the seismic response of the equipment under the floor response spectrum and the time history analysis method was compared and analyzed.The results indicate that the influence of the change of the equipment position in the structure layer on the equipment-structure system was closely related to the structural seismic intensity and the eccentricity of the equipment floor.The effect decreased with the increase of input seismic intensity,and increased with the eccentricity of the equipment.The dynamic calculation of the equipment under floor response spectrum was conservative.
作者
姜忻良
刘海朝
Jiang Xinliang;Liu Haichao(School of Civil Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Coastal Civil Engineering Structure and Safety,Ministry of Education,Tianjin University,Tianjin 300072,China)
出处
《石家庄铁道大学学报（自然科学版）》
2019年第2期16-23,78,共9页
Journal of Shijiazhuang Tiedao University(Natural Science Edition)
基金
国家自然科学基金(51478312,51278335)
关键词
设备-结构体系
动力相互作用
设备作用位置
时程分析法
equipment-structure system
dynamic interaction
position of equipment
time-history analysis
