Experiment on Concrete Columns Reinforced with 500 MPa Fine-Grained Rebar under Low Cycle Reversed Loading
Experiment on Concrete Columns Reinforced with 500 MPa Fine-Grained Rebar under Low Cycle Reversed Loading
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发表时间：
2009
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通讯作者：
Z. Yong
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作者：
Z. Yong
通过对6根低周反加载混凝土柱进行试验，研究了500 MPa细粒纵筋和不同强度马镫配筋混凝土柱的破坏形态、滞回特性和骨架曲线特征、位移延性等抗震性能。基于试验的研究表明，大部分纵筋在试件处于峰值荷载时达到屈服强度，而500mpa塑性铰区箍筋只有在试件严重破坏后才会屈服。迟滞曲线呈梭形，其中一些曲线表现出轻微的挤压。所有试件均表现出较高的强度和良好的位移延性。
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 hysteretic curves are shuttle-shaped,and some of them show slight pinching.All specimens exhibited high strength and good displacement ductility.