【摘要】 PCCP管道在国内外有压输水工程中广泛使用，管道断丝是威胁管道结构安全的主要因素。以PCCP管道断丝数量、管外预应力外加固和内贴碳纤维加固作为切入点，建立PCCP管道有限元模型，模拟PCCP断丝管在内水荷载作用和加固措施的应力变形特点，分析管道加固技术合理性和可行性，为PCCP管道缺陷处理提供理论依据。对断丝管节采取相应工程措施后达到预期质量目标，可为其他类似工程提供借鉴。更多还原

【Abstract】 Prestressed Concrete Cylinder Pipe(PCCP)is widely used in domestic and foreign pressurized water supply project, Breakage of prestressed wire in PCCP is the main defect that endangers the safety of pipeline structure. Research on the study to the number of broken wires, strengthened by external prestressing and carbon fiber reinforcement as starting point, numerical simulation of the stress deformation characteristic under internal pressure load and reinforcement measures by finite element modeling, analyzed the reinforcement of technical rationality and feasibility, as the theoretical foundation of pipeline rehabilitation and defect treatment. Expected results of the project after taking the corresponding measures, the experience provides reference to the same kind of construction project.更多还原