带有偏移角的型钢混凝土梁-柱节点抗震性能研究
Seismic Performance Study of Steel-Concrete Beam-Column Nodes with Offset Angles
段加超 1侯天赐 2李亚苹 1李大华2
作者信息
- 1. 马鞍山首建工程质量检测咨询有限公司,安徽 马鞍山 243000
- 2. 安徽建筑大学 土木工程学院,安徽 合肥 230601
- 折叠
摘要
为了研究带有偏移角型钢混凝土梁-柱节点的抗震性能,采用数值模拟方法,以 6°为步长,建立了从0°到30°的6 个边节点模型,进行了低周往复荷载下的拟静力试验,对各边节点的破坏形态、承载能力、滞回性能等进行了分析.结果表明:在往复荷载作用下,各边节点的梁端都形成了塑性铰并发生了破坏,但等效塑性应变区域向偏移侧转移;边节点偏移角的增加对滞回曲线的形状没有明显影响,但会提高节点的承载能力和耗能能力,导致骨架曲线外扩.
Abstract
In order to study the seismic performance of steel-concrete beam-column nodes with offset angels,utili-zing numerical simulation methods with a 6-degree increment,boundary node models are systematically estab-lished ranging from 0° to 30°.Subsequent quasi-static tests are conducted under low-cycle reversed loading,allo-wing for a comprehensive analysis of various parameters pertaining to the boundary nodes,including failure modes,load-bearing capacity,and hysteresis properties.The results indicate that,under the action of cyclic load-ing,plastic hinges formed at the beam ends of each boundary node,leading to structural damage.However,the equivalent plastic strain zone shifted towards the offset side.In terms of hysteresis performance analysis,an in-crease in the offset angle did not significantly affect the shape of the hysteresis curve,but it enhanced the nodes'load-bearing capacity and energy dissipation,resulting in the outward expansion of the skeleton curve.
关键词
型钢混凝土/梁-柱节点/有限元分析/抗震性能Key words
steel-concrete/beam-column node/finite element analysis/seismic performance引用本文复制引用
基金项目
马鞍山首建工程咨询有限公司与安徽建筑大学合作基金资助项目(HYB20220091)
出版年
2024
NETL
NSTL
万方数据