钢梁-钢筋混凝土柱全钢连接节点非线性有限元分析

NON-LINEAR FINITE ELEMENT ANALYSIS OF COMPOSITE JOINTS OF STEEL BEAM AND REINFORCED CONCRETE COLUMN WITH ALL STEEL CONNECTION

钢梁-钢筋混凝土柱组合结构(RCS)能够充分利用钢与混凝土材料的强度、刚度及延性等性能的优势。提出一种新型钢梁-钢筋混凝土柱全钢连接形式,采用有限元分析软件ANSYS对连接节点进行分析。结果表明:钢梁端部优先屈服,随后钢柱端部屈服,实现"强柱弱梁"的设计理念,且节点区采用全钢构式,延性耗能能力较好。分析了节点的受力机理,提出了节点设计的建议。

Steel beam and reinforced concrete column composite structure（ RCS） can make full use of the advantage of strength,stiffness and ductility for steel and concrete. A new type of composite joint of steel beam and concrete column with all steel connection was proposed,and the joint was analyzed by the finite software ANSYS. The results showed that the end of steel beam yielded first and then the end of steel column,which could meet the design concept of ＂strong column and weak beam＂. The ductility and hysteretic behavior were better because of all steel connection. The mechanical mechanism was analyzed,which could provide some suggestions for joint design.