高层混凝土空间网格盒式多筒结构抗震性能静力弹塑性分析  

Pushover analysis for the seismic performance of the high-rise RC space grid cassette multi-tube structure system

作　　者：张晓波[1,2] 熊奇伟 姜安民 马克俭[4] 董彦辰 ZHANG Xiao-bo;XIONG Qi-wei;JIANG An-min;MA Ke-jian;DONG Yan-chen(Department of Management Engineering,Hunan Urban Construction College,Xiangtan 411100,Hunan,China;School of Civil Engineering,Changsha University of Science&Technology,Changsha 410114,China;College of Civil Engineering,Hunan University,Changsha 410082,China;Space Structures Research Center,Guizhou University,Guiyang 550003,China)

机构地区：[1]湖南城建职业技术学院管理工程系,湖南湘潭411100 [2]长沙理工大学土木工程学院,长沙410114 [3]湖南大学土木工程学院,长沙410082 [4]贵州大学空间结构研究中心,贵阳550003

出　　处：《安全与环境学报》2021年第4期1455-1466,共12页Journal of Safety and Environment

基　　金：“十二五”国家科技支撑计划项目(2011BAJ09B01-01);湖南省教育厅科学研究项目(18C1254)。

摘　　要：介绍了高层钢筋混凝土空间网格盒式多筒结构这种新的结构体系,并采用有限元分析软件对新型结构抗震性能进行研究。以某地拟建工程为例进行静力弹塑性分析,研究不同水平侧向力分布模式对盒式多筒结构的影响,并与动力时程分析的结果进行对比,选出盒式多筒结构适合的水平侧向力分布模式,进而对盒式多筒结构进行抗震性能静力弹塑性分析。结果表明,振型分解反应谱法分布模式对于盒式多筒结构这样一个新型结构体系最为适宜,并得出了盒式多筒结构在罕遇地震下各项参数都远优于规范限值、塑性铰出现顺序满足规范要求、抗震性能优越的结论。盒式多筒结构在高层建筑中较为适用,一个筒作为一户,充分体现了“大开间、灵活划分居室”的优势。研究可为空间网格盒式多筒结构的推广起到一定的促进作用,同时可以为盒式结构设计的相关研究提供参考。The present paper intends to introduce a novelty multi-tube structure system of the high-rise reinforced concrete space grid cassette and a kind of finite element analysis software to trace and work out the seismic performance of the said new structure.To achieve the purpose,we would like to take the formulated building as a case study sample through pushover analysis to work out the impact of the loading modes of the different horizontal lateral forces on the cassette multi-tube structure by comparing the historic analysis results of the dynamic time.And,furthermore,to trace and test the seismic performance of such multi-tube structures,we have also chosen suitable horizontal lateral forces to work out the loading modes of the cassette multi-tube structure.As a result,the distributed spectrum of the mode decomposition response can be found most suitable for such a new system of cassette multi-tube structure,whereas the angles of the cassette multi-tube structure maximum inter-layer displacement and those of the maximum elastic-plastic inter-layers should be made much better than that of the standard limit.At the same time,the plastic hinge of the cassette multi-tube structure should be made to meet the demands of the standardized design objectives.In addition,the beams and plates of the cassette multitube structure can also be made to share the responsibilities of the seismic force with the shared wall,which helps to prolong the effective time of the shearing wall as the first fortification,to guarantee the main force components which are not to be destroyed immediately,which should be able to lead to the structure ductile failure in case of serious earthquake situations and leave enough time for the users to escape and get rid of the likely risk.Thus,it can be concluded that the cassette multi-tube structure is superior in seismic performance under the earthquake risk situations.What is more,such kind of cassette structure should be made more suitable for high-rise buildings,with the advantage of flexible and c

关 键 词：安全工程 盒式多筒结构 静力弹塑性 结构抗震 

分 类 号：X959[环境科学与工程—安全科学]