Fabricated truss purline structure

Abstract

The utility model discloses an assembly type truss purline structure in the field of steel structure buildings, which comprises an upper chord member and a lower chord member which are parallel to each other, a diagonal web member is arranged between the upper chord member and the lower chord member, two ends of the diagonal web member are detachably connected with an upper connecting plate and a lower connecting plate respectively, and each of the upper chord member and the lower chord member comprises a pair of symmetrically arranged first angle steel. And the upper connecting plate and the lower connecting plate are respectively clamped between the vertical surfaces of the pair of first angle steels of the upper chord member and the lower chord member and are welded and fixed. The fabricated truss purline structure is stable and firm in structure, high in overall deformation resistance and high in factory prefabrication degree, and has the advantages of being high in construction progress, high in repeated utilization rate and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steel structure building, especially a kind of fabricated truss purlin structure. BACKGROUND

[0002] Truss purlin is the roof bearing structure of building, and purlin is horizontal component resting on the main structure of roof.When the building column distance (usually equal to purlin span) is greater than 12 meters, cold-bending section steel C, Z-shaped purlin cannot pass through calculation, and truss purlin can be considered in this case.Truss purlin is composed of upper chord, lower chord and web, and its main economy is "open web".

[0003] In the traditional truss purlin, upper chord and lower chord usually adopt cold-bending section steel, and web adopts thin-walled pipe;upper chord, lower chord and web are welded together and cannot be disassembled, which leads to inconvenience in disassembly and maintenance in later period, and also brings difficulty to transportation, and the traditional truss purlin has low prefabrication rate, and a large amount of welding work needs to be carried out on the assembly site, which affects construction progress and also affects the health of workers. SUMMARY

[0004] The utility model aims at providing a kind of fabricated truss purlin structure to solve the problems existing in prior art.

[0005] The utility model discloses a kind of fabricated truss purlin structure, which is characterized by comprising upper chord and lower chord which are parallel to each other, and diagonal web is arranged between the upper chord and the lower chord, and the two ends of the diagonal web are detachably connected with upper connecting plate and lower connecting plate respectively, the upper chord and the lower chord each include a pair of symmetrically arranged first angle steels, and the upper connecting plate and the lower connecting plate are respectively clamped between the vertical surface of the pair of first angle steels of the upper chord and the lower chord and welded and fixed.The fabricated truss purlin structure is stable and firm in structure, has strong overall deformation resistance, and the upper chord and the lower chord can be prefabricated in factory, and each component only needs to be simply spliced and assembled at construction site, without welding construction, so that the construction progress is fast, and the structure has high reusability.

[0006] As a further improvement of the utility model, the length of the upper chord is greater than the length of the lower chord, the bottom of the upper connecting plate located at the end of the upper chord is connected with a horizontal connecting plate, the connecting plate is detachably connected with the upper flange of the I-beam, and the connection is convenient, fast and reliable.

[0007] As a further improvement of the utility model, the lower connecting plate located at the end of the lower chord is detachably connected with a straight web between the upper chord, which further improves the structural stability of the truss purlin.

[0008] As further improvement of the utility model, the middle section of the upper chord and the lower chord is provided with the diagonal pull rod connecting hole and the first straight pull rod connecting hole, which is convenient for setting the diagonal pull rod and the straight pull rod between the adjacent truss purlins, and further improves the structural stability; the diagonal pull rod connecting hole and the first straight pull rod connecting hole are arranged at the connecting position of the upper connecting plate and the lower connecting plate, which minimizes the influence of the arrangement of the diagonal pull rod connecting hole and the first straight pull rod connecting hole on the structural strength.

[0009] As further improvement of the utility model, the end of the upper chord is provided with the second straight pull rod connecting hole, which further improves the structural stability.

[0010] As further improvement of the utility model, the third straight pull rod connecting hole is arranged at the outer side of the upper connecting plate at the end, which further improves the structural stability of the truss purlin.

[0011] As further improvement of the utility model, the cross section of the straight web and the diagonal web is L-shaped, which is high in structural strength and convenient for connection.

[0012] As further improvement of the utility model, the reinforcing plate is arranged between the inner side of the web of the I-beam and the upper wing plate and the lower wing plate, thereby improving the supporting strength.

[0013] As further improvement of the utility model, the edge angle steel is arranged at the two ends of the upper chord, thereby further improving the structural strength. ACCURACY

[0014] Figure 1 It is a schematic view of the assembled truss purlin structure of the utility model.

[0015] Figure 2 It is Figure 1 The middle K-K view.

[0016] Among them, 1 upper chord, 2 lower chord, 3 diagonal web, 4 upper connecting plate, 5 lower connecting plate, 6 straight web, 7 diagonal pull rod connecting hole, 8 first straight pull rod connecting hole, 9 second straight pull rod connecting hole, 10 connecting plate, 11 I-beam, 12 third straight pull rod connecting hole, 13 reinforcing plate, 14 edge angle steel. CONCRETE IMPLEMENTATION

[0017] As Figures 1-2 The assembled truss purlin structure shown in the figure, including mutually parallel upper chord 1 and lower chord 2. Upper chord 1 and lower chord 2 between the diagonal web 3. Diagonal web 3 two ends are respectively with upper connecting plate 4 and lower connecting plate 5 detachable connection. The lower connecting plate 5 between the lower chord 2 end and the upper chord 1 detachably connected with straight web 6, guarantee the structural stability of truss purlin. Straight web 6 and diagonal web 3 cross section is L-shaped, which is high in structural strength and convenient for connection.

[0018] Specifically, the upper chord 1 and the lower chord 2 each include a pair of symmetrically arranged angle steels, and the upper connecting plate 4 and the lower connecting plate 5 are respectively clamped between the vertical surfaces of the pair of angle steels of the upper chord 1 and the lower chord 2 and are welded and fixed. The middle section of the upper chord 1 and the lower chord 2 is provided with a diagonal pull rod connecting hole 7 and a first straight pull rod connecting hole 8, so as to facilitate the arrangement of diagonal pull rods and straight pull rods between adjacent truss purlins, and further improve the structural stability; the diagonal pull rod connecting hole 7 and the first straight pull rod connecting hole 8 are arranged at the connecting position of the upper connecting plate 4 and the lower connecting plate 5, so as to minimize the influence of the arrangement of the diagonal pull rod connecting hole 7 and the first straight pull rod connecting hole 8 on the structural strength. The end of the upper chord 1 is provided with a second straight pull rod connecting hole 9, so as to further improve the structural stability.

[0019] The length of the upper chord 1 is greater than the length of the lower chord 2, and the upper chord is provided with an edge angle steel 14 at both ends. The bottom of the upper connecting plate 4 at the end of the upper chord 1 is connected with a horizontal connecting plate 10, and the connecting plate 10 is detachably connected with the upper flange plate of the I-beam 11, so that the connection is convenient, fast and reliable. The outer side of the upper connecting plate 4 at the end is provided with a third straight pull rod connecting hole 12, so as to further improve the structural stability of the truss purlin. The inner side of the web of the I-beam 11 is provided with a reinforcing plate 13 between the upper flange plate and the lower flange plate, so as to improve the supporting strength.

[0020] The assembled truss purlin structure of the embodiment is stable and firm in structure, has high overall anti-deformation capacity, has high factory prefabrication degree, and has the advantages of fast construction progress, high reusability and the like.

[0021] The utility model is not limited to the above embodiment, and based on the technical scheme disclosed in the utility model, those skilled in the art can make some substitutions and deformations to some technical features according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the utility model.

Claims

1. A fabricated trussed purlin structure comprising upper and lower chord members parallel to each other, characterised in that: The upper chord and the lower chord are provided with inclined web members, the two ends of the inclined web members are respectively detachably connected with the upper connecting plates and the lower connecting plates, the upper chord and the lower chord each comprise a pair of symmetrically arranged first angle steels, and the upper connecting plates and the lower connecting plates are respectively clamped between the vertical surfaces of the pair of first angle steels of the upper chord and the lower chord and are welded and fixed.

2. The fabricated truss purlin structure according to claim 1, characterized by: The upper chord is longer than the lower chord, the bottom of the upper connecting plate at the end of the upper chord is connected with a horizontal connecting plate, and the connecting plate is detachably connected with the upper flange of the I-beam.

3. The fabricated truss purlin structure according to claim 2, characterized by: The lower connecting plate at the end of the lower chord is detachably connected with the upper chord with a straight web member.

4. The fabricated truss purlin structure according to claim 2, characterized by: The middle sections of the upper chord and the lower chord are provided with inclined pull rod connecting holes and first straight pull rod connecting holes, and the inclined pull rod connecting holes and the first straight pull rod connecting holes are arranged at the connecting positions of the upper connecting plates and the lower connecting plates.

5. The fabricated truss purlin structure according to claim 2, characterized by: The end of the upper chord is provided with a second straight pull rod connecting hole.

6. The fabricated truss purlin structure according to claim 5, characterized in that: The outer side of the upper connecting plate at the end is provided with a third straight pull rod connecting hole.

7. The fabricated truss purlin structure according to claim 3, characterized by: The cross sections of the straight web members and the inclined web members are L-shaped.

8. The fabricated truss purlin structure according to any one of claims 2-6, characterized in that: The inner side of the web of the I-beam is provided with a reinforcing plate between the upper flange and the lower flange.

9. The fabricated truss purlin structure according to any one of claims 2-6, characterized in that: The two ends of the upper chord are provided with edge closing angle steels.

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