土木工程与管理学报Issue(3)：33-39,7.
核心区配箍率影响下HRB500 E梁柱节点抗震研究
Seismic Performance Research of the Beam-Column Joint with HRB500 E Under Different Core Region Stirrup Ratios
摘要
Abstract
Core region stirrups could constraint the concrete in core region and change joint’ s mechanical behavior. To investigate the seismic performance of high performance reinforcement (HRB500E) beam-column joint with different core region stirrup ratio, six full-scale specimens with low and high shear compression ratio were designed and tested under quasi-static load. The failure modes, cracks development, hysteretic curve, ductility coefficient and energy-dissipation performances of the specimens were studied in both high shear compression ratio and low shear compression ratio situation. Results indicated that:when shear compression ratio is low, with the core region stirrup ratio increasing, the hysteretic curve become plumper, and the ductility coefficient increased significantly. When shear compression ratio is high, with the stirrup ratio increasing, more complete core region joints were provided, and the bearing capacity as well as the ductility coefficient was slightly improved. In both low and high shear compression ratio situation, core region stirrups ratio could change the failure mode of the beam-column joint, and the very low stirrups ratio could result in poor energy-dissipation.关键词
梁柱节点/高性能钢筋(HRB500E)/抗震性能/核心区配箍率/剪压比Key words
beam-column joint/high performance reinforcement(HRB500 E)/seismic performance/core region stirrup ratio/shear compression ratio分类
建筑与水利引用本文复制引用
王思启,高飞,彭运动,马健..核心区配箍率影响下HRB500 E梁柱节点抗震研究[J].土木工程与管理学报,2015,(3):33-39,7.基金项目
国家自然科学基金(51378233) （51378233）
贵州省“十二五”重大科技专项(黔科合重大专项[2011]6014) （黔科合重大专项[2011]6014）
