中文摘要：

为研究钢-混凝土组合节点刚度对组合框架抗震性能的影响，首先讨论了组合节点的刚度覆其影响因素，然后通过某多层钢结构工程实例，利用Ansys有限元软件建立了纯钢框架与组合框架，分别假定刚接厦考虑节点刚度等共4种框架模型，进行了多遇地震反应谱分析及弹性时程分析，并进行了计算对比．计算结果表明，考虑钢框架的组合作用后，结构整体自振周期变短，基本自振周期降低了13．4％，说明结构整体刚度变大．但考虑节点刚度后，地震周期又有所加大。纯钢框架及组合框架基本自振周期均增大了17％，相应地震位移变大，2种模型的反应谱法分析顶层位移分别增大了8％，11％，说明组合节点刚度对结构的抗震性能是不可忽略的因素。

英文摘要：

To study the main influence of composite joints rigidity on composite frame seismic properties, this paper at first discusses composite joint rigidity and influence factors, and then through a multi - storied steel project, creates frame composite frame and different joint style four model based with finite element software ANSYS, and contrasts the results of response spectrum analysis to elastic time - history analysis. The results which take the composite effect into account show that the natural vibration period is shorter by 13.4 %, the stiffness of the structure is larger than not. But considering the rigidity of joints, the natural vibration period is larger by 17%, the drifts of earthquake are larger, and the top drifts is larger 8 % and 11%. the rigidity of composite joints can not be ignored in earthquake.