摘要
为研究HRB500钢筋混凝土框架柱塑性铰区的抗震性能,采用仿建研式加载。通过试验,分析了3种典型破坏形态的根本原因与区别。试验表明,HRB500钢筋作为框架柱的箍筋时,能够充分发挥其高强特性,有利于提高施工质量。经分析可知,只要配筋合理,柱端形成塑性铰后,滞回环才能较为丰满,耗能能力较强,刚度退化平缓,具有稳定的承载能力及变形性能,抗震性能及延性均较好。
In order to study the seismic performance of the plastic hinge district in frame column of reinforced concrete with HRB500, the thesis used the simulation of japanese building-research-installation and analysed the roots and main differences of three kinds of typical failure modes through testing. It showed that HRB500 steel bar as a stirrup in the frame columns can give full play to its high strength characteristics and also helps improving the construction quality. Therefore,with rational reinforcing bars ,after the yield hinge is formed in the end of the specimen, the horizontal load-displacement hysteretie loop is chubby, energy dissipation capacity is strong, stiffness degradation is gentle, the bearing capacity is stable and deformation properties is good, so both seismic performance and ductility are better.
出处
《四川建筑科学研究》
北大核心
2009年第5期134-136,共3页
Sichuan Building Science
基金
国家自然科学基金资助项目(50578148)
关键词
HRB500钢筋
塑性铰区
延性
滞回曲线
HRB500 steel bar
the yield hinge region
ductility
horizontal load-displacement hysteretic loop
