摘要
通过试验和有限元理论对比研究了钢支撑束柱的抗震性能和破坏特性。试验模型采用2层钢支撑束柱构件,其中钢支撑为长肢相并的双角钢支撑。试验共分为3组,1组为单调加载试验,另外2组为滞回性能试验。另对钢支撑束柱的抗震性能进行了有限元理论分析,经试验结果验证,得到了钢支撑束柱试件的抗侧承载力、刚度及滞回性能。研究表明,钢支撑束柱的承载力、刚度主要来自钢支撑,而束柱外框架部分的贡献很小。钢支撑束柱的破坏只发生在钢支撑中,外框架部分没有任何损坏。
The seismic resistant performance and failure mechanism of the steel bracing Bound-Column were analyzed with tests and the finite element method .Two-story steel bracing Bound-Column test specimen was selected .The braces adopt long leg back-back double angle .Tests were divided into three groups , including one monotonic loading test and two cyclic tests . Lateral load-bearing capacity , stiffness and hysteretic behavior of the steel bracing Bound-Column were obtained by the comparison of test results and the finite element method .Results show that the steel brace of Bound-Column contributes a lot to its load capacity and stiffness ,while the external frame provides little lateral rigidity and capacity .Bound-Column failure occurs only in the steel braces ,while the external frame is with no damage .
出处
《土木建筑与环境工程》
CSCD
北大核心
2014年第1期10-15,86,共7页
Journal of Civil,Architectural & Environment Engineering
基金
科技部十二五科技支撑计划(2012DAJ13B02)
关键词
钢支撑束柱
抗震性能
模型试验
有限元理论
steel bracing bound-column
seismic resistant performance
model test
finite element method
