Nuclear power station steel lining variable cross-section special-shaped lining plate structure and manufacturing method thereof

Abstract

The invention discloses a nuclear power station steel lining variable cross-section special-shaped lining plate structure and a manufacturing method thereof. A lining plate comprises a bottom plate ring section, a truncated cone, a gallery lining, a top plate ring section, a gallery top plate and a first inner shell lining layer. The lower end and the upper end of the truncated cone are fixedly connected with the bottom plate ring section and the first gallery lining layer respectively to form a first part of the lining plate, the second gallery lining layer is connected with the top plate ring section to form a second part of the lining plate, and the gallery top plate and the first inner shell lining layer form a third part of the lining plate; each part is manufactured into a plurality of block plates in a workshop, the block plates are sequentially welded and connected into a whole on site, and then the whole is fixedly connected with the bottom plate and the lower end of the second layer of the containment steel lining cylinder in the nuclear power station. By optimizing layering and blocking and secondary splicing, welding deformation of the variable-cross-section special-shaped lining plate is effectively controlled, the field welding work amount is reduced, and the cross construction time of prestressed gallery construction is shortened.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a steel lining variable-section special-shaped lining plate structure of a nuclear power station and a manufacturing method thereof. Background technique [0002] In the construction of nuclear power plants, the bottom ring section, truncated cone, corridor lining, corridor roof and inner shell cylinder of the nuclear island steel lining are part of the steel lining of the reactor building containment, and its main function is to resist abnormal accidents. The proliferation of nuclear pollution under working conditions is the third anti-leakage barrier for nuclear power plants, and it belongs to nuclear safety equipment with nuclear quality assurance level I and nuclear safety level II. [0003] The bottom ring section, truncated cone, corridor lining, corridor roof and inner shell cylinder of nuclear island containment steel lining have complex structur...

AI Technical Summary

Problems solved by technology

Due to the large number of sub-plates and the many cross welds and T-shaped weld joints, the site installation welding volume is large, the construction period is long, and the duration of cross-construction with the inner shell civil engineering is long. Restricted, there are steel barriers, occupying the construction period of the critical path

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