结合工程实例探讨砖混结构二次加固改造过程中所涉及的关键技术,研讨相关的设计思路和方法,包括托换梁的设计与构造,竖向承重结构的加固设计以及楼梯拆换技术。总结了进行砖混结构托换施工时应注意的若干技术问题,可供今后同类工程在进行结构加固改造设计与施工时参考。 The key technologies involved in the process of rebuilding brick masonry structures are discussed in connection with engineering examples. Relevant design ideas and methods are discussed, including the design and construction of underpinning beams, the reinforcement design of vertical load-bearing structures, and the stair-changing technology. Summarized some technical problems that should be paid attention to when undertaking masonry structure underpinning construction, which can be used for reference in design and construction of similar projects in the future.