摘要
从钢筋混凝土烟囱实际特点出发,以四个大尺寸烟囱试件的试验结果为依据,讨论了不同剪跨比、不同轴压比下钢筋混凝土烟囱的滞回特性,提出了能够反映钢筋混凝土烟囱特点的四线型恢复力模型及其特征点的计算方法,有关结论可供烟囱抗震设计参考。
Based on the tested four large scale RC chimney models designed according to the
real conditions of RC chimneys, the hysterctic characteristic of RC chimney with differ-
ent shear span ratios and axial loading ratios under cyclic loading have been discussed,
from which a four-linear model of restoring force and methods for calculating the char-
acteristic points on the moment-curvature curve, i. e. cracking of concrete, yielding of
extreme edge bar on the tension side, yielding or section and ultimate state are proposed,
which can be used in the earthquake-resistant design of RC chimneys.
关键词
钢筋混凝土
烟囱
恢复力
试验
reinforced concrete
chimnev restoring force
characteristics / characteristic point
