摘要
通过6个试件的低周反复加载试验,对配有500 MPa细晶钢筋的混凝土柱的抗震性能进行了研究,包括破坏形态、滞回曲线、骨架曲线、位移延性等。试验研究表明,500 MPa高强钢筋用作纵筋时,在试件达到峰值荷载时大部分能够屈服,用作箍筋时,在试件达到峰值荷载时未能屈服,但在试件破坏时能够屈服;试件的柱头水平荷载-位移滞回曲线成梭形,部分有捏缩现象;所有试件均有较高的承载力和良好的位移延性。
Tests were conducted on six columns under low cycle reversed loading to study such seismic behavior as failure patterns,characteristics of hysteretic and skeleton curve, displacement ductility of concrete columns reinforced with 500 MPa fine-grained longitudinal rebars and stirrups with different strengths. Studies based on tests indicate that most of the longitudinal rebars reached their yield strength when the specimens were under peak loading, while the 500 MPa stirrups in plastic hinge zones yielded only after the specimens were seriously damaged. The hysteretie curves are shuttle-shaped, and some of them show slight pinching. All specimens exhibited high strength and good displacement ductility.
出处
《结构工程师》
2009年第3期135-140,共6页
Structural Engineers
关键词
钢筋混凝土柱
高强钢筋
低周反复加载
滞回曲线
位移延性
reinforced concrete column, high strength rebar, low cycle reversed loading, hysteretic curve, displacement ductility
