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为改善约束砖砌体结构的抗震性能,通过分析32个约束砖砌体墙片试验数据,得出延性系数值,并拟合出延性系数与高度和高宽比之间的关系式。结果表明,高宽比越大延性系数越小。因此,为使结构具有一定的延性,应控制高宽比;同时提出约束砖砌体结构接近倒塌时层间目标位移计算公式,并与8层约束砖砌体结构动力时程分析结果平均值进行比较,计算值与平均值是比较接近的。
In order to improve the seismic performance of constrained brick masonry structures, the values of ductility coefficients were obtained by analyzing the experimental data of 32 constrained brick masonry walls and the relation between ductility coefficient and height and aspect ratio was fitted. The results show that the larger the aspect ratio, the smaller the ductility coefficient. Therefore, in order to make the structure ductile, the aspect ratio should be controlled. At the same time, the formulas for calculating the target displacement of the constrained brick masonry structure approaching to the collapse are put forward, and are compared with the average of the dynamic time-history analysis results of the 8-layer constrained brick masonry structure Comparison, the calculated value and the average is relatively close.