【摘要】 为研究钢梁-钢筋混凝土混合框架的抗震性能,对不同跨度的钢筋混凝土框架(RC)和钢梁-钢筋混凝土混合框架(RCS)建立了三组模型,采用大型通用有限元分析软件Sap2000,对三组模型进行了模态分析、pushover分析。结果表明,采用RCS框架,在梁高减小40%的前提下,框架的基底剪力峰值均有所增加,最多可增加34%,RCS框架的塑性铰会先出现在底层柱端,RCS结构在性能点处的层间位移略大于RC框架,但远小于规范限值。在大跨度结构中,RCS框架的适用性较RC框架结构更为广泛,能够满足工程中对结构体系更高、更大跨的需求。更多还原

【Abstract】 To study the seismic behavior of the hybrid frame with steel beam and reinforced concrete column,three groups of the models for reinforced concrete frame(RC) and steel beam reinforced concrete frame(RCS) were set up based on different spans,and Sap2000 is used for the modal analysis and pushover analysis of the models.The results show that the base shear of RCS can be increased by 34% at most with the 40% decrease of beam height;However,the plastic hinge of the RCS structure will appear in the bottom of the column firstly;The story drift of the RCS frame in the performance point is slightly higher than that of the RC frame,but lower than the limiting value.RCS has a wider application than RC in large span structures,so it can meet the requirements of larger and higher structures.更多还原