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A kind of steel arched roof structure of nuclear power plant and its assembly construction method

A construction method and technology of nuclear power plants, applied in the direction of arched beams, roofs, building components, etc., can solve the problems of long hoisting equipment time, high safety risks, and high construction costs, so as to simplify the assembly construction process, meet assembly error requirements, and meet The effect of deformation control requirements

Active Publication Date: 2021-06-08
CHINA NUCLEAR IND HUAXING CONSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • A kind of steel arched roof structure of nuclear power plant and its assembly construction method
  • A kind of steel arched roof structure of nuclear power plant and its assembly construction method
  • A kind of steel arched roof structure of nuclear power plant and its assembly construction method

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Embodiment Construction

[0037] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] Such as Figure 1-11As shown, a steel arched roof structure of a nuclear power plant of the present invention includes an arched main beam 1, an arched secondary beam unit 2 and a roof structure panel 3, and the arched main beam 1 is an arched welded H with a straight section at the end Shaped steel is formed by segmental assembly of the first curved H-shaped steel 1-1, the second curved H-shaped steel 1-2 and the third curved H-shaped steel 1-3, wherein the first curved H-shaped steel 1-1 is the lower end Arc-shaped H-shaped steel with vertical section, the two lower ends of arc-shaped H-shaped steel with vertical section are symmetrically arranged at both ends of the arched main beam 1, and two second arc-shaped H-shaped steel 1-2 are respectively welded to the two first The upper end of the arc-shaped H-shaped steel 1-1, the third ar...

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Abstract

The invention discloses a steel arched roof structure of a nuclear power plant and an assembly construction method thereof. The arched main girders of the steel arched roof structure are distributed in parallel at intervals and connected by arched secondary beam units to form an arched roof skeleton, and the roof structure panels are welded on the The upper surface of the arched roof skeleton forms a sealed steel arched roof structure. The steel arched roof structure assembly construction method is through the assembly of the arched main beam plane assembly, the arrangement of the assembly support system, the vertical assembly of the main beam plane assembly and the four-pipe column support, the vertical assembly of the arched main beam, the assembly of the arched secondary beam unit, Positioning accuracy adjustment, assembly of the arched roof frame, assembly of roof structure panels and assembly of the entire arched roof, and finally dismantling and assembling the support system and assembly positioning system, and finally assembling into a steel arched roof structure; this assembly construction method can significantly reduce structural deformation, It simplifies the construction process, improves the installation accuracy, and improves the construction efficiency, and can be applied to the construction field 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B7/10E04C3/40E04G21/14E04G25/00
CPCE04B7/102E04C3/40E04G21/142E04G25/00
Inventor 刘林沈振曹荣华王明涛
Owner CHINA NUCLEAR IND HUAXING CONSTR
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