RC梁柱节点抗剪机理及承载力计算方法综述
Review of studies on shear resisting mechanisms and calculation methods of shear capacity of RC beam-column joints
赵雯桐 1岳亚新 1薛茹 1王志远1
作者信息
- 1. 郑州航空工业管理学院土木建筑学院,郑州 450046
- 折叠
摘要
对国内外关于框架结构中梁柱节点抗震性能研究成果进行总结归纳,分析了加载过程中节点的破坏形态及其抗剪机理,总结了典型的梁柱节点抗剪承载力计算模型,并基于各国规范对比了现有的抗剪承载力计算模型的适用性.对比了美国规范ACI 318-19、欧洲规范EC2的抗剪承载力计算的差异,指出了《混凝土结构设计规范》(GB 50010-2010)(2015年版)建议的梁柱节点抗剪承载力计算结果相对保守.建议适量增加节点核心区配箍率,从而提高钢筋与核心区混凝土的粘结性能,减少纵筋的粘结滑移现象.
Abstract
The research results on the seismic performance of beam-column joints in frame structures at home and abroad were summarized.The failure modes and shear resisting mechanism of joints during loading were analyzed.The typical calculation models of shear capacity of beam-column joints were summarized.The applicability of the existing calculation models of shear capacity was compared based on the specifications of various countries.The differences of shear capacity calculation between American code ACI 318-19 and European code EC2 were compared.It is pointed out that the calculation results of shear capacity of beam-column joints recommended by Code for design of concrete structures(GB 50010-2010)(2015 edition)are relatively conservative.It is suggested to increase the stirrup ratio in the core area of the joint,so as to improve the bonding performance between the steel bar and the concrete in the core area and reduce the bond slip phenomenon of the longitudinal reinforcement.
关键词
RC梁柱节点/破坏形态/抗剪机理/计算模型/抗剪承载力Key words
RC beam-column joint/failure mode/shear resisting mechanism/calculation model/shear capacity引用本文复制引用
基金项目
河南省科技攻关计划(232102320177)
河南省科技攻关计划(222102320070)
河南省高等学校重点科研项目(22A560006)
出版年
2024
NETL
NSTL
万方数据