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预应力板柱结构是一种预制装配武钢筋混凝土无梁楼盖建筑体系,其楼盖通过双向水平预应力组装而成,所以这种建筑体系的抗震安全性是有争议的。为了研究这种预制装配结构的抗震性能,进行了1/3比例空间的(三维)结构模型在反复水平力作用下的试验研究和弹塑性金过程分析,并对现有这类建筑进行了原型结构动力特性实测。本文在试验和计算的基础上讨论了这种结构体系的固有周期、振型、刚度、强度、破坏特征、变形、延性和层间剪力分布,并提出了简化计算模型和其抗震设计参数的某些建议。
The prestressed slab column structure is a kind of prefabricated assembly system with reinforced concrete beamless floor. The floor of the slab is assembled by bidirectional horizontal prestressing, so the seismic safety of this kind of building system is controversial. In order to study the seismic performance of this prefabricated assembly structure, a 1/3 scale spatial (3D) structural model was tested under repeated horizontal forces, and elastoplastic gold process analysis was performed. Prototypes of these existing structures were also prototyped. Structural dynamic characteristics measured. Based on the experiments and calculations, this paper discusses the inherent period, vibration mode, stiffness, strength, failure characteristics, deformation, ductility, and interlayer shear distribution of this structural system, and proposes a simplified calculation model and its seismic design parameters. Some suggestions.