Building outer eave special-shaped decoration piece anti-wind-pressure structure system and construction method

Abstract

The invention relates to a building outer eave special-shaped decoration piece anti-wind-pressure structure system and a construction method. The system comprises an outer eave metal curtain wall, anoval roof, roof keel purlines and multiple special-shaped decoration pieces. The system is characterized in that the special-shaped decoration pieces are uniformly distributed on the roof and the outer eave metal curtain wall, a parallel supporting rod is fixedly connected between each two adjacent special-shaped decoration pieces, a combined supporting rod is fixedly connected in an interval between the special-shaped decoration pieces adjacent to two ends of a long shaft and a short shaft of the roof, and reinforcing ribbed plates are arranged at positions where the roots of upper flanges ofthe special-shaped decoration pieces are connected with the roof, symmetrically arranged on two sides of the special-shaped decoration pieces and fixedly connected with special-shaped decoration piece keels and the roof keel purlines. The system has the advantages that the special-shaped decoration pieces form a whole, so that stress is scientific, and safety is high; connection rigidity betweenthe special-shaped decoration pieces and the roof is improved substantially, and substantial swing of the special-shaped decoration pieces under action of wind power is avoided; the system is especially suitable for buildings in windy regions, with large windward area of the special-shaped decoration pieces, high requirements on outer eave impression and strict waterproof requirements.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a wind pressure-resistant construction system and construction method of a special-shaped decorative sheet on the outer eaves of a building. Background technique [0002] Large-scale gymnasium projects mostly use metal roofs and metal outer eaves curtain wall structures. The overall shape is oval. Nearly a hundred super-large special-shaped decorative pieces are evenly distributed on the outer eaves of the building in an elliptical ring. The special-shaped decorative pieces are vertically perpendicular to the metal curtain wall of the outer eaves. The horizontal direction is vertically connected with the elliptical metal roof, and the special-shaped decorative sheet skeleton is welded with the steel structure. The traditional design scheme is to add diagonal braces at the root of the special-shaped decorative sheet to resist the bending moment force at t...

AI Technical Summary

Problems solved by technology

The traditional design scheme is to add diagonal braces at the root of the special-shaped decorative sheet to resist the bending moment force at the root when the special-shaped decorative sheet is affected by the wind, but there is no obvious limit to the swing range of the special-shaped decorative sheet

The above scheme has many disadvantages. Since the northern region is a windy area, the special-shaped decorative sheet is greatly affected by the wind. The windward area of ​​a single special-shaped decorative sheet reaches 32 square meters, and its root is seriously affected by the bending moment. The weld seam at the connection between the steel keel and the steel structure cracks The probability is extremely high, and at the same time, the sealant at the joint between the root of the flange on the special-shaped decorative sheet and the metal roof is easily torn, causing roof leakage

[0003] In addition, if diagonal braces are added to the root of the special-shaped decorative sheet, openings must be made on the metal roof and metal curtain wall. In order to meet the requirements of beautiful appearance, an independent cladding board needs to be added, and the cost will increase sharply

At the same time, due to the large increase in the number of openings, the swing range of the special-shaped decorative sheet cannot be effectively limited, and the hidden danger of leakage has increased sharply. It is necessary to consider the anti-leakage process of this part separately

To sum up, the negative impact brought by the original design method is extremely great, and it cannot meet the construction of building support structures in windy regions in the north, large windward area of ​​special-shaped decorative sheets, high requirements for exterior eaves appearance, and high waterproof requirements.

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