重庆大学学报2025，Vol.48Issue(3)：81-93,13.DOI:10.11835/j.issn.1000-582X.2025.03.007
Q960高强钢锥形削弱梁柱节点滞回性能及恢复力模型
Hysteretic behavior and restoring force model of Q960 high strength steel weakened beam-column joints
摘要
Abstract
To study the hysteretic behavior of a new kind of high-performance steel produced by HBIS(Hebei-Iron-and-Steel),three beam-column joints with different connection forms were designed and tested under quasi-static loading conditions.The experimental results show that the"taper weakened"joint exhibits fully developed ductility and excellent energy dissipation capacity,while the"composite"joint shows significantly improved seismic performance.Based on the test results,a trilinear restoring force model considering stiffness degradation was established,with the skeleton curve fitted to key experimental feature points.The hysteretic curve expression was derived using an exponential differential equation.The reconstructed model achieved an analytic error within 10%,effectively capturing the hysteretic response of the jonts.关键词
恢复力模型/梁柱节点/抗震性能/Q960高强钢/削弱型构造Key words
restoring force model/beam-column joint/seismic performance/Q960 high strength steel/weakened form分类
土木建筑引用本文复制引用
聂诗东,龙泓州,叶曦雨,邓颜智,陈振业,马成,潘进..Q960高强钢锥形削弱梁柱节点滞回性能及恢复力模型[J].重庆大学学报,2025,48(3):81-93,13.基金项目
高性能建筑结构钢设计应用基础研究(H20200688) （H20200688）
高等学校学科创新引智计划项目(B18062).Supported by Fundamental Research on Design and application of High-performance Building Strucrura Steel(H20200688),111 Project(B18062). （B18062）
