中文摘要：

为研究预拉对穿螺栓的新型PEC柱-钢梁T形件摩擦耗能型连接中节点滞回性能,考虑轴压力、PEC柱截面形式、钢板组合截面布置方式与摩擦力大小等设计参数,采用有限元软件ABAQUS建立了5个有限元分析模型试件并对其进行循环荷载下的数值模拟,得到试件的弯矩-转角滞回曲线。结果表明：摩擦耗能型连接方式不仅满足结构耗能延性性能设计目标,且承压型强度设计还能保证必要的安全冗余度;轴向力影响较小;摩擦力影响连接的耗能能力,但对其承载能力影响不明显;钢结构翼缘卷边措施可增强混凝土的约束作用,更好地满足＂强柱弱梁＂的抗震要求;预拉对穿螺栓表现部分自复位功效,且较好实现了混凝土斜压带传力机理,相应降低了对节点域腹板的抗剪要求;所有试件破坏模式均由于T形件的加强而使得梁截面的塑性铰出现位置向T形件腹板外排螺栓附近梁截面转移,且达到破坏时对应的节点转角均超过了0.04rad,表明该节点连接能较好满足抗震转动能力的需求。

英文摘要：

To invetigate hysterstic behavior of PEC column fabricated with thin-walled built-up section-steel beam split-tee interior joint with frictional energy-dissipation connections,several design parameters as axial compression,the section configuration and layout of PEC column,the friction force were taken into account,5specimens were designed by FE software ABAQUS to simulate its mechanical performances under lateral cyclic loading.The research results show that all specimens soundly meet energy-dissipation capacity by frictional slip-type connection and its safety margin by bearing-type connection.Axial compression has little effect on the mechanical performance of connection.Frictional force affects energy-dissipation but not loading-carrying capacity.Flange crimping would confine concrete to meet seismic design principle of＂strong column weak beam＂.Through-out bolts exhibited partial self-centering functions to effectively form concrete equivalent strut in the panel zone and correspondingly alleviate shear resisting demand of steel web.The failure mode primary induced by plastic hinge formed in the steel beam section near the end bolt of split-tee web,and rotation angles all surpassed 0.04 rad at failure to verify its soundly rotational capacity for seismicity.