双型钢混凝土转换梁柱节点抗震性能试验研究

发布时间：2018-04-24 05:21

本文选题：双型钢混凝土结构 + 转换梁柱节点　；参考：《建筑结构学报》2014年07期

【摘要】：以广东某高层建筑为工程背景,针对大跨度转换结构,提出了双型钢混凝土转换梁柱节点的构造组合形式,通过对2个转换节点的竖向和水平荷载作用下的低周反复荷载试验,研究了节点的破坏形态、承载能力、刚度、滞回特性、延性、耗能能力及关键位置钢筋和型钢的应变等性能。试验结果表明:转换梁内置双型钢腹板形成的封闭空间对混凝土有约束作用,提高了节点区混凝土的抗剪能力;双型钢混凝土转换梁柱节点的滞回曲线饱满,极限变形能力较强,承载力较高,刚度、延性和耗能能力均较好;被转换柱与双型钢混凝土梁采用"端板螺栓连接"实现了"在被转换柱底部先出现塑性铰",达到了"强梁强柱,更强节点"和"强转换层,弱框架层"目的。
[Abstract]:Taking a high-rise building in Guangdong province as the engineering background, a structural combination of double section steel reinforced concrete (SRC) transfer Liang Zhu joints is proposed for large span transfer structures. The low cycle cyclic loading tests of two transfer joints under vertical and horizontal loads are carried out. The failure mode, bearing capacity, stiffness, hysteretic characteristics, ductility, energy dissipation capacity and strain properties of steel bars and sections at key locations are studied. The test results show that the closed space formed by the inner double section steel web of the transfer beam can restrain the concrete and improve the shear resistance of the concrete in the joint area, and the hysteretic curve of the double section steel reinforced concrete transfer Liang Zhu joint is full, and the hysteretic curve of the double section steel reinforced concrete transfer Liang Zhu joint is full. The ultimate deformation capacity is stronger, the bearing capacity is higher, the stiffness, ductility and energy dissipation ability are better; The "end plate bolt connection" is used to realize the "plastic hinge at the bottom of the converted column", which achieves the purpose of "strong Liang Qiang column, stronger joint" and "strong transfer layer, weak frame layer".
【作者单位】：湖南大学土木工程学院;广东省建筑科学研究院;美国南加州大学土木工程系;
【基金】：广东省科技计划项目(粤科规划字〔2010〕170号)
【分类号】：TU398.9;TU317.1;TU352.11

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