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本文通过16个配筋砌块砌体剪力墙连梁的伪静力试验研究了配筋砌块连梁的抗震性能,考察了跨高比和配筋率两个影响因素。探讨了不同影响因素下连梁在水平往复荷载作用下的破坏特征、承载能力、滞回性能、骨架曲线、延性、耗能比等问题;对比了砌块连梁和混凝土连梁通过配筋加强后的相应特征的异同。试验结果表明:配筋砌块连梁破坏反映了砌块组砌的特点,从破坏形态角度可分为剪切、弯曲和剪弯三种类型;由滞回曲线可以看出,配筋砌块连梁具有良好的抗震性能,所得的归一化骨架曲线为进一步进行配筋砌块剪力墙结构整体工作的计算分析提供必要的数据。
In this paper, the seismic performance of reinforced concrete block beams is studied by means of pseudo-static tests of 16 reinforced block masonry shear walls coupled beams. The influence factors of span ratio and reinforcement ratio are investigated. The failure characteristics, load bearing capacity, hysteretic behavior, skeleton curve, ductility and energy dissipation ratio under the influence of horizontal and vertical loads under different influence factors were discussed. Compared with reinforced concrete beams and concrete beams Similarities and differences between the corresponding features. The test results show that the failure of reinforced concrete block beams reflects the characteristics of block construction, and can be divided into three types of shear, bending and shear bending from the perspective of failure mode. It can be seen from the hysteresis curve that reinforced block The even beam has good anti-seismic performance. The normalized skeleton curve obtained from the experiment provides the necessary data for further calculation and analysis of the overall work of reinforced block shear wall structure.