双钢板内填混凝土短肢组合剪力墙抗震性能试验研究

发布时间：2018-04-04 13:45

本文选题：组合剪力墙　切入点：滞回性能　出处：《土木工程学报》2017年01期

【摘要】：为了研究双钢板内填混凝土短肢组合剪力墙的抗震性能,进行了2层半单跨1/3缩尺试件的低周反复加载试验,分析了试件在循环荷载作用下的破坏机理、滞回性能、延性、刚度退化规律以及耗能能力。试验结果表明:双钢板内填混凝土短肢组合剪力墙滞回曲线饱满,耗能能力强,延性好,水平刚度较大;循环荷载作用下,连梁腹板首先屈服进入塑形,接着连梁两端翼缘、柱脚和剪力墙底部进入塑性;第2层连梁两端翼缘拉断,导致试件失效;剪力墙的线刚度远高于连梁的线刚度,水平荷载作用下连梁两端弯矩大,为结构的薄弱部位;为避免剪力墙自由边底部与梁连接部位发生破坏,在自由边处应设置边柱加强;试件达到峰值荷载时,顶点位移角为1/50;双钢板内填混凝土短肢剪力墙试件底层变形比2层小,耗能相对2层少;弹性范围内同一水平荷载作用下,连梁腹板的剪应变最大,边柱柱脚的正应变较大,剪力墙钢板的剪应变较小。ABAQUS有限元分析结果与试验结果吻合较好。
[Abstract]:In order to study the seismic performance of concrete filled steel double short pier shear walls, the 2 storey semi single span 1/3 scale low cycle reversed loading experiment, analysis of specimens under cyclic loading and failure mechanism, hysteretic behavior, ductility, stiffness degradation and energy dissipation capacity. Experimental results show that double plate concrete filled short pier shear wall plump hysteretic curve, energy dissipation capacity, good ductility, horizontal stiffness; under cyclic loading, the beam web first yield into shape, then the beam ends of flange, into the bottom column and shear wall plastic layer; second ends of beam flange break, cause specimen failure; shear wall stiffness is much higher than the beam line stiffness under horizontal load moment for both ends of the beams, the weak parts of the structure; in order to avoid the shear wall at the bottom of the free edge connected with the beam position will collapse, in the free edges Set the edge column specimens strengthened; peak load, displacement angle is 1/50; double plate concrete filled short shear wall specimen bottom deformation than the 2 layer, 2 layer energy consumption relatively less; the load within the elastic range under the same level, the maximum shear strain of beam webs, side column foot strain is large, the steel plate shear wall shear strain smaller.ABAQUS finite element analysis results agree well with the experimental results.

【作者单位】：苏州科技大学江苏省结构工程重点实验室;
【基金】：国家自然科学基金(51078248) 江苏省高校自然科学研究重大项目(15KJA560002)
【分类号】：TU398.2;TU352.11

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