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数量众多又缺乏抗震措施的村镇民居已成为我国抗震设防的薄弱环节,为解决这一问题,将日趋成熟的橡胶支座隔震技术应用到村镇低矮砌体结构民居中,分析其力学性能和设计方法。针对低矮砌体结构的特点,设计3种规格的橡胶隔震支座,通过拟动力试验研究隔震层在模拟地震作用下的破坏过程和滞回曲线,得到隔震层和支座的等效水平刚度、屈服后刚度、阻尼比等力学性能,分析其在不同强度地震作用下力学性能的变化,并对比支座的力学参数测定值。验证了按照底部剪力法对低矮砌体结构隔震支座进行设计的合理性,得到了适用于村镇低矮砌体结构的隔震支座的力学性能参数,提出了该类支座在地震作用下的破坏机理,并为制订村镇砌体结构隔震技术方面的相关规程提供试验数据和力学分析方法。
In order to solve this problem, the increasingly mature rubber bearing isolation technology is applied to the residential buildings with low masonry structure in villages and towns, and the mechanical properties and Design method According to the characteristics of the low-rise masonry structure, three kinds of rubber bearings are designed, and the failure process and hysteresis curve of the seismic isolation layer under the action of simulated earthquake are studied by pseudo-dynamic test to get the isolation layer and the support The horizontal stiffness, the stiffness after yield, the damping ratio and other mechanical properties were analyzed. The changes of mechanical properties under different seismic intensity were analyzed. The mechanical parameters of the bearing were compared. The rationality of the design of low-rise masonry-isolated bearings is verified by the method of bottom shear force. The mechanical properties of the isolated masonry with low-rise masonry structure are obtained. Earthquake damage mechanism under the action, and to provide the experimental data and mechanical analysis methods for the formulation of the relevant regulations in the field of seismic isolation technology of masonry structures in villages and towns.