摘要
为了研究改善强梁弱柱式结构的抗震性能,通过四榀柱配有矩形螺旋箍筋的钢筋混凝土单元框架模型的低周反复荷载试验,对柱配有单向及复合螺旋箍筋,且轴压比及剪跨比都较大的“强梁弱柱”型框架结构,在强度、刚度、延性及耗能等方面的性能进行了探讨。在理论上对Gibson单分量模型进行了一定扩展并考虑了塑性区的影响,编制了电算程序,对试验模型进行了弹塑性全过程分析,计算结果与试验基本吻合。
To improve the earthquake-resistant properties of the strong beam and
weak column frames structures. Four single span and single storey reinforced concrete
frames with greater ratio of axial compression, ratio of moment to shear and so on,
which column has the square spiral stirrups (including simple and overlapping square
spiral stirrups), their strength, stiffness, ductilities and energy dissipation capacity have
been discussed, and the Gibson element model has been expanded to consider the
inelastic range affect, in which a cumputer calculating program about nonlinear
throughout analysis of reinforced concrete frames of strong beam and week column are
made, and the test models are analysed, the result of test and calculating are basically
consistent.
关键词
框架
抗震
混凝土
梁
柱
framed structures
earthquake resistant behavior / strong beam
weak column
