Construction method of inner mold support system for super large wind tunnel diffusion section

Abstract

The invention belongs to the technical field of wind tunnel construction methods, andparticularly relates to a construction method of an inner mold support system for a super large wind tunnel diffusion section.Theconstruction method of the inner mold support system for the super large wind tunnel diffusion sectioncomprises the following steps that A, an inner steel cylinder formwork and a profile steel structure support frameare structurally designed and subjected to consigned machining; B, the inner steel cylinder formwork and the profile steel structure support frame are machined, pass an examination, and are transported to a construction site, a project department organizes material acceptance, and data such as the size,flatness, curvature, and chord length of each formwork are rechecked one by one according to two-dimensional code data to ensure that the design requirements are met; C, on-site positioning and line dropping of each cross section of the inner steel cylinder formwork are conducted; and D, positioning and mounting of the inner steel cylinder formwork and the profile steel structure support frame are conducted.According to the construction method of the inner mold support system for the super large wind tunnel diffusion section, the construction problem of the super large wind tunnel circular-to-square diffusion section iseffectively solved,with the method, the internal mold support system which meets the construction accuracy requirements can be built, and smooth completion of the construction is ensured.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel construction methods, and in particular relates to a construction method for an internal mold support system for a diffusion section of a super-large wind tunnel. Background technique [0002] With the development of the domestic automobile industry, more and more large-scale automobile companies and research institutes have begun to plan and build their own large-scale concrete vehicle wind tunnels. It gradually becomes a square cylindrical structure, generally more than 30 meters in length. As the inner wall of the wind tunnel flow channel, in order to ensure the quality of the flow field in the test section, such as the uniformity of the airflow velocity distribution, the deviation of the average airflow direction from the axis of the wind tunnel, the pressure gradient along the axis of the wind tunnel, the uniformity of the cross-sectional temperature distribution, the Turbulence and nois...

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Problems solved by technology

[0003] It can be seen that the construction of the automobile wind tunnel requires high construction precision on the inner wall of the wind tunnel. Therefore, the construction of the internal mold support system is the most critical step. Moreover, since the diffusion section of the wind tunnel is a gradually deformed structure, the size of each section is different. The same, so, in the construction process, the formwork system of traditional wood formwork and steel pipe scaffolding can no longer meet the requirements of on-site construction and quality accuracy

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