预应力钢筒混凝土管(PCCP)耐久性设计探讨

Discussion on Durability Design of Prestressed Concrete Cylinder Pipe(PCCP)

结合预应力钢筒混凝土管(PCCP)产品标准、混凝土结构耐久性设计相关标准和文献,分析了PCCP的工程结构属性、服役环境、结构特点,强调了PCCP耐久性设计的必要性,归纳了PCCP耐久性设计的基本内容,总结了与耐久性相关的PCCP管体结构、环境作用条件、管体混凝土材料、工艺构造以及附加防腐措施等方面的技术要求,提出了不同环境条件下PCCP的耐久性设计思路。

Combined with the product standard of prestressed concrete cylinder pipe(PCCP),relevant standards and documents of concrete structure durability design,the structural attributes,service environment and structural characteristics of PCCP engineering are analyzed,and the necessity of PCCP durability design are emphasized,the basic contents and steps of PCCP durability design are summarized,the PCCP structure,environmental conditions,concrete materials,process structure,anti-corrosion measures and other technical requirements related to durability are concluded.In addition,the design ideas for the durability design of PCCP under different environmental conditions are put forward.