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云南许多少数民族地区农民自建房多为两层及以下采用配原竹代替钢筋的砌体结构,为验证其抗震性能,通过对配竹筋的混凝土砌块墙进行低周往复荷载试验研究,得到其滞回性能、延性、耗能能力和刚度退化等指标。得到墙体采用简易抗震构造措施后,其滞回曲线呈梭形,同时其最大水平抗剪承载力也大大提高,其延性系数较小,出现超筋破坏,但整体来说抗震性能得到提高,说明其是一种有效的简易抗震措施,对农村自建房的抗震有重要意义。
In many ethnic minority areas in Yunnan, peasants self-built houses are mostly two-story and below masonry structures with original bamboo instead of steel bars. In order to verify its seismic performance, low-cycle cyclic loading tests on bamboo- Get its hysteresis performance, ductility, energy consumption and stiffness degradation and other indicators. After the simple earthquake-resistant structure is adopted, the hysteretic curve of the wall is fusiform, and its maximum horizontal shear capacity is also greatly increased. The ductility coefficient is small and the super-reinforcement failure appears, but the seismic performance as a whole is improved It is an effective simple earthquake-resistant measure, which is of great significance to the earthquake resistance of self-built houses in rural areas.