中文摘要：

利用有限单元方法,考虑材料的非线性,分别对拼接等强型和拼接削弱型带悬臂梁段拼接节点进行分析,考察螺栓预拉力、界面摩擦因数、悬臂段长度、螺栓孔形状、梁端构造措施等因素对2类节点抗震性能的影响.结果表明,拼接等强型节点的抗震性能对上述设计参数几乎没有依赖性,而拼接削弱型节点的抗震性能则显著依赖于各参数的改变.将预拉力由P增大为1.2P或将摩擦因数由0.3增大为0.5均造成节点塑性转动能力降低50%以上;将悬臂梁段长度由500mm减为300mm造成滑移荷载降低20.5%,增为800mm则造成螺栓不出现滑移;梁端构造加强引起节点承载力提高16.8%,塑性转角提高17.5%.因此,高强螺栓预拉力、界面摩擦因数、梁端构造措施是影响拼接削弱型节点抗震性能的关键参数,在设计中需重点关注.

英文摘要：

A finite element method was used preform non-linear analysis of equal-strength and weak-strength steel frame cantilever beam spliced joints.Bolt pre-tension,friction coefficient at the interface,cantilever beam length,bolt-hole shape and reinforcement of the column-beam connection are examined.It appears that these parameters have a small influence on the capacity of the equal strength splice joint to dissipate energy.On the other hand,the weak splice joint is greatly affected by changes in these parameters.For example,rotation at the joint decreases more than 50% when pre-tension increased 20% or when the coefficient of friction increased from 0.3 to 0.5.The strength increases 16.8% and the resistance to rotation 17.5% when the column-beam connection is reinforced.When designing weak strength joints these parameters are key to creating a successful design.