A block-detachable annular working platform and its construction method

Abstract

The invention relates to a piece-by-block detachable annular working platform and a construction method, comprising at least two triangular supports, a detachable platform is installed on the triangular supports, the front side of the detachable platform and each supporting structure The vertical poles are connected by card slots; a hook is installed on the front side of the top of the support structure pole, and a backstop device is arranged on the support structure pole at the place where the hook is installed; the outer end of the detachable platform is an upright Install a railing above the fence, the railing includes a well-shaped fence, and a handrail is installed on the upper end of the well-shaped fence; construction steps: hook position release → channel steel installation → SC structure Installation → installation of triangular support → installation of anti-retraction device → installation of detachable platform → installation of railings. The operating platform is safe and reliable, ensuring smooth assembly and welding of SC structural ring seams in nuclear power plants.

Description

technical field [0001] The invention relates to the technical field of civil construction, in particular to a block-disassembled ring-shaped operating platform and a construction method. Background technique [0002] The CAP1400 nuclear power plant is a large-scale advanced pressurized water reactor nuclear power plant with independent intellectual property rights developed on the basis of the introduction of AP1000 third-generation technology, which is the world's first nuclear power plant. [0003] The CAP1400 nuclear power plant is a double-hull structure, with a CV steel containment vessel on the inside and an SC structure on the outside. The SC structure is one of the most important structures for nuclear power plants to resist internal and external accidents. It has radiation shielding, missile protection, passive cooling, and resistance to tornadoes. In order to further improve the ability of the reactor building to resist internal and external accidents, the steel pl...

AI Technical Summary

Problems solved by technology

[0007] Manual handling: As mentioned above, the construction of the SC structure is behind the CV. The working platform of the CV is higher than the top level of the SC structure, and the width is about 1m. This part of the working platform closes the vertical space above the SC structure and cannot be installed with lifting equipment.

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