钢管混凝土-钢板深梁结构抗震试验与承载力计算  

Seismic test and load-bearing capacity calculation of structure with CFST columns and deep steel plate beams

作　　者：董宏英[1] 刘恒超[1] 许方方[1] 曹万林[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124

出　　处：《世界地震工程》2014年第4期120-128,共9页World Earthquake Engineering

基　　金：北京市自然科学基金(8122004);国家"十二五"科技支撑计划课题(2012BAJ13B02)

摘　　要：提出了钢管混凝土-钢板深梁结构,进行了4个钢管混凝土-钢板深梁结构模型试件的低周反复荷载试验,4个试件均由等截面钢管混凝土柱和等尺寸钢板深梁构成,各试件高宽比相同。4个试件的区别在于设置的钢板深梁道数不同,以重点研究钢板深梁对结构抗震性能的影响。分析了各试件的承载力、刚度及退化过程、延性、滞回特性、耗能和损伤与破坏过程等。基于试验,提出了承载力计算模型,计算结果与实测结果符合较好。研究表明:钢管混凝土-钢板深梁结构,具有良好的抗震性能;钢板深梁与钢管混凝土设计参数应合理匹配,以实现强钢管混凝土柱和弱钢板深梁的延性屈服机制;钢管混凝土-钢板深梁结构可用于结构抗震设计。A structure with CFST columns and deep steel plate beams is presented. Four specimens were tested under low frequency cyclic loading. The four specimens with the same aspect ratio are constituted by CFST columns in the same cross- section and deep steel plate beams of the same size. In order to focus on the seismic performance caused by the deep steel plate beams,the number of the beams is different for deferent specimens. The load- bearing capacity,stiffness and degradation process,ductility,hysteretic behavior,energy dissipation,damage and failure characteristics of specimens were discussed. Based on the experiment,load- bearing capacity calculation model was proposed and the calculation results are in good agreement with the measured results. The study shows that the structure with CFST columns and deep steel plate beams has good seismic performance. In order to achieve the ductile yield mechanism of strong CFST columns and weak deep steel plate beams,the design parameters of deep steel plate beams will be matched with the CFST columns. The structure with CFST columns and deep steel plate beams can be used for seismic design of structures.

关 键 词：钢管混凝土 钢板深梁 结构 抗震试验 承载力计算 

分 类 号：TU398[建筑科学—结构工程]