角钢混凝土柱延性与抗震措施

Ductility and Seismic Fortification Measures on Angle-steel Concrete Columns

针对目前的规范或规程均尚未明确给出角钢混凝土柱的抗震构造措施这一问题,基于9根剪跨比为3、采用钢板箍的角钢混凝土柱拟静力试验获得的骨架曲线,采用能量等效法计算了试验柱的位移延性系数。结果表明,轴压比不变的试件,随钢板箍配箍率的增加,位移延性系数增大;钢板箍配箍率不变的试件,随轴压比的增加,位移延性系数减小;最后给出角钢混凝土柱抗震构造措施,为采用该类柱的结构设计提供依据。

Due to absence of seismic fortification measures on angle-steel concrete columns, based on the skeletons of 9 ASCC specimens with shear steel plate and the shear span ratio is 3 subjected to the horizontal low cyclic loading, displacement ductility factors on the specimens are calculated by energy method. The results show that axial compression ratio is constant, with the increasing of shear steel plate, displacement ductility factor becomes larger; shear steel plate is constant, with the increasing of axial compression ratio, displacement ductility factor become smaller. At last, seismic fortification measures on angle-steel concrete columns are given, these can provide the reference for structural design adopting the kind of columns.