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整体预应力板柱结构是依靠摩擦节点相联接的“半刚接”结构体系。本文利用3层结构模型进行了系统的动力试验,给出了结构从弹性阶段直至破坏全过程动力特性的测定结果,最后以静力推拉试验给出了滞回曲线,采用变刚度的等效线性化方法分析了结构的振动,并与试验结果进行了比较。目的在于研究该结构体系在简谐强迫振动下的动力特性、刚度和阻尼等振动参数的变化规律以及确定该结构体系的抗震性能。
The overall prestressed slab structure is a “semi-rigid” structural system that is connected by friction nodes. In this paper, a three-layer structure model was used to test the dynamics of the system, and the measurement results of the dynamic characteristics of the structure from the elastic stage to the failure process were given. Finally, the hysteresis curve was given by the static push-pull test, and the equivalent linearity of variable stiffness was used. The method analyzes the vibration of the structure and compares it with the test results. The purpose is to study the dynamic characteristics of the structural system under harmonic forced vibration, such as the variation of vibration parameters such as stiffness and damping, and to determine the seismic performance of the structural system.