Cold-formed thin-walled type steel combined truss purline

Abstract

The invention discloses a cold-formed thin-walled type steel combined truss purline. The cold-formed thin-walled type steel combined truss purline comprises an upper chord and a lower chord. A web member is arranged between the upper chord and the lower chord and composed of a plurality of intermittent web member units. Each web member unit comprises a horizontal web member perpendicular to the chords and two inclined web members. The horizontal web members and the inclined web members are fixedly connected with the upper chord and the lower chord. One ends of every two inclined web members are tightly adjacent to each other to form a V shape so that the truss purline can be formed. Zinc plates are further arranged on the joints between the web members and the upper chord and between the web members and the lower chord. The left end and the right end of the upper chord and the left end and the right end of the lower chord are provided with I-shaped support bases respectively. Upper top plates of the I-shaped support bases are fixedly connected with the upper chord. Angle braces are arranged between the lower bottom plates of the I-shaped support bases and the lower chord. The I-shaped support bases and a steel structure main beam of a building are connected. A connection mode is novel. The structure is attractive and simple, and construction speed is high; arranged zinc blocks can enhance the anti-corrosion effect and can also be used for fastening bolts, and stability of the truss purline is higher.

Description

technical field [0001] The invention relates to metal building materials, particularly to a purlin, in particular to a cold-formed thin-walled steel combined truss purlin. Background technique [0002] Truss purlins are roof load-bearing structures for buildings, and purlins are horizontal members resting on the main roof structure. The light-duty roof purlin structure generally adopts Z-shaped or C cold-formed thin-walled solid-web steel, and the purlin span is about 9m. When the span of roof purlins is greater than 12m, or when the load and purlin distance are large, the cold-formed thin-walled steel purlins cannot meet the structural force requirements, and it is usually necessary to set up purlin supports or use solid-web H-shaped steel beams or high-frequency welded H beams. Steel girders are used instead of purlins, which will cause a substantial increase in the amount of steel used in the structure and increase the cost of the building. Contents of the invention ...

AI Technical Summary

Problems solved by technology

When the span of roof purlins is greater than 12m, or when the load and purlin distance are large, the cold-formed thin-walled steel purlins cannot meet the structural force requirements, and it is usually necessary to set up purlin supports or use solid-web H-shaped steel beams or high-frequency welded H beams. Steel girders are used instead of purlins, which will cause a substantial increase in the amount of steel used in the structure and increase the cost of the building

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