介绍了武钢1号高炉扩容大修技术改造工程设计中,对一个钢烟囱的改造加固的设计思路和设计过程,包括洞口截面的改造加固方案的选取,风荷载的计算,加固计算以及处理等等,其做法对类似的工程具有参考价值, This paper introduces the design process and design process of the rebuilding and reinforcement of a steel chimney in the engineering design of the expansion and overhaul of the blast furnace of WISCO No 1, including the selection of rebuilding and reinforcement schemes of the cross section of the hole, the calculation of the wind load, the reinforcement calculation and treatment, The practice of similar projects with reference value,