建筑结构学报2018，Vol.39Issue(3)：56-66,11.DOI:10.14006/j.jzjgxb.2018.03.008
高强箍筋高强混凝土Z形截面柱框架节点抗震性能试验研究
Experimental research on seismic behavior of high-strength concrete Z-shaped column frame joints with high-strength stirrups
摘要
Abstract
To research the seismic behavior of high-strength concrete (HSC) Z-shaped column frame joints confined with high-strength stirrups,quasi-static tests were carried out on five 1/2-scale HSC Z-shaped column frame joint specimens with high-strength stirrups and one with normal strength stirrups.Failure patterns,hysteretic performance,skeleton curve,ductility,energy dissipation capacity,stiffness degradation,shear bearing capacity and stress magnitude of high-strength stirrups were studied.The influences of shear compression ratio,axial compression ratio,stirrup volume ratio and other parameters of Z-shaped column frame joints on the failure mode,hysteretic behavior and shear bearing capacity were analyzed.The results show that the failure modes of Z-shaped column frame joint specimens are flexural failure or flexural-shear failure influenced by design parameters.Compared with HSC Z-shaped column frame joints with ordinary strength stirrups,HSC Z-shaped column frame joints with high-strength stirrups not only have significantly improved maximum shear compression ratio control value,but also have good seismic behavior.The values of high-strength stirrup stress are given.The shear capacity of HSC Z-shaped column frame joints with high-strength stirrups can be calculated using normal formula in the JGJ 149-2017'Technical specification for concrete structures with specially shaped columns',and the solutions agree well with the experimental results.关键词
高强混凝土/高强箍筋/Z形截面柱节点/约束混凝土/拟静力试验/抗震性能Key words
high-strength concrete/high-strength stirrup/Z-shaped column joint/confined concrete/quasi-static test/seismic behavior分类
建筑与水利引用本文复制引用
崔钦淑,王建东,郭颜恺..高强箍筋高强混凝土Z形截面柱框架节点抗震性能试验研究[J].建筑结构学报,2018,39(3):56-66,11.基金项目
浙江省自然科学基金项目(LY14E080007),国家自然科学基金项目(51779227). （LY14E080007）
