带交叉钢筋异形截面短柱抗震性能试验研究及非线性分析  

Experiment and non-linear element analyses of seismic behavior of short specially shaped columns with crossed reinforcing bars

作　　者：曹万林[1] 黄选明[1] 宋文勇 田宝发 崔玉国 

机构地区：[1]北京工业大学建筑工程学院,北京100022 [2]沧州市建筑设计研究院,河北沧州061001

出　　处：《建筑结构学报》2005年第3期30-37,共8页Journal of Building Structures

基　　金：国家自然科学基金资助项目(50378005);北京市教委基金资助项目(KM200410005017);北京自然科学基金资助项目(8032005)

摘　　要：提出带暗柱异形截面短柱和带交叉钢筋异形截面短柱。通过3根Z形短柱抗震性能的试验研究,分析比较了Z形柱在两个工程轴受力方向的承载力、延性、滞回曲线和破坏特征,分析了暗柱对提高Z形短柱抗震能力的作用。进行了3根T形、3根十字形和3根L形截面短柱抗震性能的试验研究。试验表明,带暗柱异形截面短柱和带交叉钢筋异形截面短柱与普通异形截面短柱相比,承载力和延性明显提高,滞回曲线相对饱满,耗能能力增强。采用ANSYS程序对12根异形截面短柱进行了非线性有限元计算分析,计算结果与实测结果符合较好。The short specially shaped columns with concealed columns and with crossed reinforcing bars are put forward in this paper. Through the tests of seismic behavior of 3 Z-shaped column specimens, the bearing capacity, ductility, hysteresis curves and failure modes in two engineering horizontal directions of Z-shaped column are analyzed. It is proved that the concealed columns in the short Z-shaped column can greatly improve its seismic behavior. Then, based on the tests of seismic behavior of 3 T-shaped, 3 + -shaped and 3 L-shaped column specimens, the seismic behavior of the general specially shaped columns, specially shaped columns with concealed columns and specially shaped column with crossed reinforcing bars are compared respectively for each shape. It is proved that the crossed reinforcing bars in the short specially shaped columns can significantly improve its seismic behavior. Finally, by applying the proposed model, a non-linear finite element analyses is carried out for the short specially shaped columns subjected to cyclic loading. The analytical results are in good agreement with the test results.

关 键 词：钢筋混凝土 异形截面 短柱 交叉钢筋 有限元分析 抗震性能 性能试验 建筑结构 

分 类 号：TU375.3[建筑科学—结构工程] TU311.3