针对实际工程加固改造中增设梁的情况,采用增设钢牛腿来加强节点,使节点满足结构受力性能要求。对钢牛腿的连接节点作法进行力学分析,并结合工程事例加以验算,结果表明:该作法的力学分析方法是安全可靠的,这将为从事建筑结构加固改造的相关设计人员提供了参考。 In order to reinforce the actual project in the case of additional beams, the use of additional steel legs to strengthen the node, the node to meet the requirements of the performance of the structure. The mechanical analysis of steel nodal connections and the calculation of engineering cases are carried out. The results show that the method of mechanical analysis is safe and reliable, which will provide reference for relevant designers engaged in strengthening and rebuilding of building structures.