摘要
以高烈度地区某拟建工程为例,简要介绍了新型装配整体式空间钢网格盒式筒中筒结构组成,利用PKPM和MIDAS/Building软件建立新型盒式结构和常规框架核心筒结构的有限元模型,从自振周期、楼层剪力、倾覆弯矩、楼层位移、层间位移角等方面对两种结构体系进行对比分析。分析结果表明,两种结构在满足小震不坏的设防要求下,盒式结构要比常规结构具有更大的抗侧刚度、抗剪刚度,具有更好的抗震性能和整体协同工作能力。因此,盒式结构比常规结构更适合应用于高烈度地区。
Taking a proposed project in high seismic intensity area as an example,a new prefabricated spatial steel grid cassette tube-in-tube structure system was briefly introduced. Finite element models of the new spatial steel grid cassette structures and conventional frame-tube structures were built by using PKPM and MIDAS / building software. The two kinds of structures were compared from the aspects of self vibration period,storey shear force,overturning moment,floor displacement and storey drift angle etc. The results of the analysis indicate that both of the structures can satisfy the requirement of ＂no damage under small earthquakes＂; however,the new cassette structure has greater lateral stiffness and shear stiffness,as well as better seismic performance and overall ability of working together. Therefore,cassette structures are more suitable for the high seismic intensity area than the conventional structures.
出处
《水利与建筑工程学报》
2015年第6期226-230,共5页
Journal of Water Resources and Architectural Engineering
基金
国家自然科学基金项目资助(51408144)
贵州大学博士基金项目(项目代码X131001)
关键词
高烈度区
盒式结构
空间钢网格
筒中筒
对比分析
high earthquake intensity zone
cassette structure
spatial steel grid
tube-in-tube
comparative analysis
