A separated finite element model for mechanical analysis of a reinforced concrete beam (RCB) was established in this paper and a stiffness matrix with 4-node sticking units was deduced.

• 摘要为对钢筋混凝土梁进行动力破损评估，建立了钢筋混凝土梁的分离式有限元模型，推导了四节点矩形粘结单元的刚度矩阵。