简化方法在管道支架跨距计算中的应用

第三代核电站设计中，核岛基础的预埋管道采用内外套管的型式，外层套管将和混凝土结构结合在一起。为保证预埋管在制造、运输、安装和混凝土浇灌过程中不产生较大的变形，对核电站RPE系统预埋管外管道进行了支架设置。采用简化计算方法，对两个支架之间的最大允许跨距和管道自由端的最大允许长度进行了推导计算。在此基础上计算出支架最大反作用力和管道变形的最大挠度。可供核电站其它系统管道支架最大跨距计算借鉴。

Application of Simplified Methodology in Span Calculation of Piping Supports

The internal-external casing is applied to pre-embedded pipe of nuclear island foundation in the third generation of nuclear plant design,and the external pipe is set in concrete slab.In order to guarantee within an allowable deformation of pre-embedded pipe during process of manufacture,transportation,installation and concrete casting,the settings was made for nuclear plant RPE system pre-embedded piping external pipe supporting.A simplified method is adopted in defining the maximum span distance between t...