现浇板对空间框架结构抗震性能影响  

Effect of cast in-situ slabs on seismic performance of spatial RC frames

作　　者：宁宁[1] 屈文俊[1] 朱鹏[1] 

机构地区：[1]同济大学土木工程学院建筑工程系,上海200092

出　　处：《哈尔滨工业大学学报》2014年第2期72-77,共6页Journal of Harbin Institute of Technology

基　　金：国家科技支撑计划(十一五)项目(2006BAJ03A07-04)

摘　　要：为研究现浇板对框架结构抗震性能的影响,以现浇板的作用为主要研究内容,开展了两个空间框架模型的水平低周反复抗震试验.通过试验数据对空间框架结构的破坏形态、承载力、刚度退化过程、滞回特性、变形特点以及耗能能力等抗震性能进行分析.结果表明:现浇板使框架承载力提高而变形能力降低;模型耗能能力变化不大.模型破坏时由"强柱弱梁"破坏机制向"强梁弱柱"破坏机制转变;且由于板的空间作用使承载力退化速度降低而刚度退化加快.模型整体抗震性能良好.To study the affection of cast in-situ slabs in RC frames during earthquakes, this paper presents a low cyclic loading test for two spatial RC frames. The failure pattern, loading carrying capacity, stiffness degradation, deformation characteristic and energy dissipation capacity are experimentally studied. Research findings indicate that the loading carrying capacity of the frame with cast in-situ slabs increase and the deformation capacity decrease. However, the energy dissipation capacity changes slightly. The failure patterns of the frame with cast in-situ slabs changes from ＂strong column weak beam failure＂ to the ＂strong beam weak column＂. The degradation of loading carrying capacity decreases and the stiffness degradation increases due to the effect of slabs. All the frames exhibit good seismic performance

关 键 词：现浇板作用 钢筋混凝土空间框架 抗震性能 

分 类 号：TU375.3[建筑科学—结构工程]