带楼板的钢梁和CFT柱抗弯连接的抗震分析

Seismic Behavior of Steel Beams and CFT Column Moment-Resisting Connections with Floor Slabs

对4个带楼板的钢管混凝土柱连接进行抗震性能分析,包括2个内部和2个外部节点。研究目的主要是对台湾地区广泛采用的钢梁组合楼板的性能进行分析。其次对梁末端楔形翼缘或者较大剪切键等连接处的抗震性能也进行了研究,以避免如Northridge地震后出现的那种不可预料的脆性破坏导致的梁翼缘焊缝完全熔透。此外,通过试验研究,推导了评估此类节点连接力-变形特性的分析模型。同时还对板域剪力转换区的楼板作用进行了研究。

This research investigates the seismic performance of four steel beams to concrete filled steel tube （CFT） column connections With floor slabs, including two interior and two exterior joints. The objective of this research is to evaluate firstly the composite effect of the steel beam and floor slab commonly used in Taiwan in practice. Secondly, the seismic behavior of new connection details such as the taper flange or larger shear tab in the beam-end is investigated to prevent complete joint penetration welds （CJP） of the girder flanges from the unexpected brittle failure found in the latter after the Northridge earthquake.