摘要
为了确保结构安全及优化设计,以一幢28层钢管混凝土结构实际工程为背景,针对3个构造不同的足尺矩形钢管混凝土柱-H型钢梁节点开展了低周反复荷载试验,对节点的破坏形态、滞回曲线、位移延性和耗能等进行了较系统的研究。试验结果表明:3个节点均实现了"强柱弱梁"、"强节点弱构件"的设计目标,破坏形态均为梁端形成塑性铰;各节点的滞回曲线均呈梭形,表现出较好的耗能性能;当层间位移角不大于1/50时,节点构造对其承载能力和耗能无显著影响;3个节点的刚度退化规律基本一致。
In order to ensure a safe design of a new building and obtain optimum design,an experimental program consisting of the tests of three full-scale connections with different connections details under cyclic loading,which were alternative design schemes for a twenty-eight-story prototype office building,was conducted to evaluate the seismic behavior of concrete filled rectangular tube column-to-H beam connections.Performance of test specimens was evaluated in terms of failure mode,hysteresis curve,ductility and energy dissipation capacity,etc.Test results showed that all specimens performed in a ductile manner with plastic hinges formed in the beam end near the column face,and exhibited a strong column-weak beam failure mechanism.The hysteresis curves of all connections were full and showed good energy dissipation.There were no obvious discrepancies in load bearing capacity and energy dissipation among three connections when story drift was not beyond 2%.The stiffness degradation trends were similar to each other.
出处
《工业建筑》
CSCD
北大核心
2011年第7期114-119,共6页
Industrial Construction
基金
天津市高等学校科技发展基金计划项目(20100904)
