论文部分内容阅读
通过对3片不同竖向压应力下的蒸压粉煤灰多孔砖墙体在低周反复荷载作用下的试验研究,分析了竖向压应力对该种材料墙体的破坏特征及其刚度、滞回曲线、延性等抗震性能的影响.试验结果表明:随着竖向压应力的增加,墙体的抗裂性能、极限承载能力均有明显提高,但延性会显著降低.为此,提出了蒸压粉煤灰砖组合墙抗剪强度计算公式,该公式能较好地符合竖向压应力对墙体抗剪强度的影响规律.
Through the experimental research on the autoclaved fly ash porous brick with three different vertical compressive stresses under low cyclic loading, the failure characteristics and stiffness of the material wall by vertical compressive stress are analyzed. Hysteresis curve and ductility.The experimental results show that with the increase of vertical compressive stress, the crack resistance and the ultimate bearing capacity of the wall are obviously improved, but the ductility will be significantly reduced.Therefore, The calculation formula of the shear strength of the autoclaved fly ash brick composite wall can well meet the rule of vertical compressive stress on the shear strength of the wall.