摘要
以宁夏宁东新城体育馆工程为背景,建立了仅单独考虑上部钢结构和下部钢筋混凝土结构单体模型及考虑上下部混合结构协同作用的整体模型。通过对各模型结构的静力分析、模态分析、多遇地震反应谱分析及罕遇地震弹塑性时程分析,探讨考虑协同作用与否对各单体模型工作性能的影响。结果表明:对于上部钢结构,应考虑下部钢筋混凝土结构的放大作用,否则会使结构偏于不安全;对于下部钢筋混凝土结构,考虑上部钢结构作用后,在静载和多遇地震作用下,结构的位移及内力有一定程度的减小,但在罕遇地震作用下,结构的地震响应和塑性损伤有明显的增大,设计时应予以考虑。
Taking the project of Ningdong New City Stadium as an example,the single model only considering the upper steel structure and the lower RC structure,as well as the whole model of the synergistic effect of considering the upper and lower composite structures were established.Through the static analysis,modal analysis,response spectrum analysis under frequent earthquake and elasto-plastic time-history analysis under rare earthquake of each model structure,the influence of synergy or not on the working performance of every single model was discussed.The results showed that for the upper steel structure,the magnification effect of the lower RC structure should be considered,otherwise the structure would be unsafe.For the lower RC structure,considering the effect of the upper steel structure,the displacement and internal force were reduced to a certain degree,but the seismic response and plastic damage of the structure obviously increased under the action of rare earthquake,which should be considered in the design.
作者
林健康
杨文伟
马朝
LIN Jiankang;YANG Wenwei;MA Zhao(College of Civil and Hydraulic Engineering,Ningxia University,Yinchuan 750021,China)
出处
《工业建筑》
CSCD
北大核心
2019年第2期155-162,共8页
Industrial Construction
基金
国家自然科学基金项目(51468054)
宁夏自治区重点研发计划项目(2016KJHM38)
关键词
混合结构
协同作用
静力分析
弹塑性时程分析
composite structure
synergy
static analysis
elasto-plastic time-history analysis
