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通过4榀1/2比例内填秸秆泥坯砌块生态复合墙体在水平低周反复荷载作用下的抗震性能试验,研究生态复合墙体在低周反复荷载作用下的受力特点和破坏机制,对比分析不同关键因素变化的生态复合墙体的承载力、滞回特性、延性、强度退化、刚度退化和耗能等抗震性能;试验结果表明:秸秆泥坯砌块、框格、隐形框架在试验的弹性阶段、弹塑性阶段、破坏阶段依次发挥作用,使复合墙体具有多道抗震防线;框格较密的ECW-3发生“强板弱柱”弯曲型破坏,高宽比较大的ECW-4发生弯剪型破坏,均属不利破坏,在设计过程中应注重框格的划分及墙板高宽比的控制;4榀墙体从屈服阶段到破坏阶段,等效粘滞阻尼系数均有较明显的增大,都具有较强的耗能能力。
Through 4 × 1/2 ratio of straw billet block ecological composite wall under horizontal low cycle repeated loading of the seismic performance test, study the ecological composite wall under low cyclic loading force characteristics and failure mechanism , Comparative analysis of the bearing capacity, hysteretic characteristics, ductility, strength degradation, stiffness degradation and energy dissipation of the ecological composite wall with different key factors changed. The experimental results show that the straw block, sash, invisible frame The elastic stage, the elasto-plastic stage and the failure stage of the test work in sequence to make the composite wall have multiple anti-seismic defenses. The ECW-3 with dense sash has “strong column weak column” bending damage with a large aspect ratio Of the shear-bending failure of ECW-4 are both adverse damage, in the design process should pay attention to the division of the grid and the wall aspect ratio control; 4 榀 wall from the yield stage to the destruction stage, the equivalent viscous damping Coefficients are significantly increased, all have a strong energy consumption.