论文部分内容阅读
基于X形配筋增强的高强钢筋异形柱中节点和在同一条件下无X形配筋的高强钢筋异形柱中节点的低周反复荷载试验,分析对比异形柱中节点的破坏特征、滞回曲线、承载力、位移及延性、刚度退化、耗能能力等抗震性能指标。研究结果表明,配置HRB500高强钢筋异形柱中节点比配置600 MPa级高强钢筋的中节点承载能力低,但变形能力强,刚度退化延缓;在核心区应用X形配筋,可以改善高强钢筋异形柱中节点的破坏特征,增强其变形能力和耗能能力,延缓试件的刚度退化,提高异形柱中节点抗震性能,核心区应用X形配筋对配置HRB500高强钢筋的试件抗震性能提高效果更明显。
Based on the low-cycle cyclic loading tests of the joints in high-strength steel bars with special-shaped columns strengthened by X-shaped reinforcement and those with high-strength steel bars without X-shaped reinforcement under the same conditions, the failure characteristics, hysteresis curves , Bearing capacity, displacement and ductility, stiffness degradation, energy dissipation capacity and other seismic performance indicators. The results show that the nodes with HRB500 high-strength special-shaped columns are lower than those with 600-MPa high-strength reinforcing bars, but their deformability and degeneration are slowed down. When X-shaped reinforcing bars are used in the core area, The results show that the X-shaped reinforcement in the core area can improve the anti-seismic performance of the specimens with HRB500 high-strength reinforcement more obvious.