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通过工程实例，运用建筑结构加固补强的理论，解决框架结构在设沉降缝受限制条件下的扩建技术。阐述了框架梁、柱加固、基础拓宽的设计方法和加固补强的施工工艺等问题。
Through engineering examples, the reinforcement theory of building structure is applied to solve the expansion technology of the frame structure under the condition that the settlement joint is limited. The problems such as frame beam, column reinforcement, foundation widening design method and reinforcement and reinforcement construction process were expounded.