Nuclear power station steel arch roof structure and assembly construction method thereof

Abstract

The invention discloses a nuclear power station steel arch roof structure and an assembly construction method thereof. The steel arch roof structure is characterized in that arch main beams are distributed in parallel at intervals and are connected through arch secondary beam units to form an arch roof framework, and a roof structure panel is welded on the upper surface of the arch roof frameworkto form a sealed steel arch roof structure. The steel arch roof structure assembly construction method comprises the steps of arch main beam plane assembly part assembly, assembly supporting system arrangement, main beam plane assembly part and four tubular column support vertical assembly, arch main beam vertical assembly, arch secondary beam unit assembly, positioning precision adjustment, archroof framework assembly, roof structure panel assembly and whole arch roof assembly, and finally assembly supporting system and assembly positioning system disassembly, so that the steel arch roof structure is assembled finally. The assembly construction method can remarkably reduce structural deformation, simplify construction procedures, improve installation precision and improve construction efficiency, and can be applied to the field of building construction of the same type of structure.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a steel arched roof structure of a nuclear power plant and an assembly construction method thereof. Background technique [0002] As the roof structure of the new reactor type nuclear power plant, the steel arched roof structure needs to ensure the sealing performance of the roof while meeting the structural requirements. In the construction of nuclear power plants that have been built or are currently under construction, there is no precedent for this type of roof structure; In the construction of similar structures, on-site assembly of small parts is often used, which has disadvantages such as cumbersome assembly process, difficult to control precision, long assembly cycle, frequent use of hoisting equipment, long time for high-altitude operations, and high safety risks. The steel arched roof is a single-curved arc structure with large span, high heigh...

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Problems solved by technology

[0002] As the roof structure of the new reactor type nuclear power plant, the steel arched roof structure needs to ensure the sealing performance of the roof while meeting the structural requirements. In the construction of nuclear power plants that have been built or are currently under construction, there is no precedent for this type of roof structure; In the construction of similar structures, on-site assembly of small parts is often used, which has disadvantages such as cumbersome assembly process, difficult to control precision, long assembly cycle, frequent use of hoisting equipment, long time for high-altitude operations, and high safety risks.

The steel arched roof is a single-curved arc structure with large span, high height, thin panels, and heavy weight. The assembly is difficult and risky, and the construction process is complicated. The construction method of on-site assembly of small parts will take a long time for the hoisting equipment. Moreover, there are many cross-constructions, high construction costs, and difficult to predict construction safety and quality risks

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