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对钢筋混凝土平面夹心节点(核心区混凝土强度与梁相同)与传统节点(核心区混凝土强度与柱相同)的抗震性能进行了对比分析,内容涉及裂缝开展及试件损伤过程、失效模式、位移延性、核心区抗压承载力、核心区抗剪承载力、滞回耗能性能、梁筋粘结锚固性能、核心区剪切变形等方面。研究显示夹心节点综合抗震性能接近传统节点,但抗剪承载力、梁筋粘结锚固性能等相对较弱。
The seismic performance of reinforced concrete plane center joints (the core strength of concrete is the same as that of beam) is compared with that of the traditional joints (core strength and column strength), including the crack initiation and specimen damage process, failure mode, displacement ductility , Compressive capacity in core zone, shear strength in core zone, energy dissipation in hysteretic zone, bond and anchorage performance in beam reinforcement, and shear deformation in core zone. The results show that the composite seismic performance of the sandwich joints is close to that of the traditional joints, but the shear strength and the bonding and anchorage performance of the beams are relatively weak.