Steel pipe truss with embedded web members

Abstract

The web member embedded type steel pipe truss comprises a steel pipe, grooves are formed in the two sides of the steel pipe in the length direction, and corresponding inner protrusions are arranged at the positions, corresponding to the grooves, in the steel pipe. The utility model has the advantages that the web members can be fully contacted and welded with the grooves, and as the web members are embedded into the grooves of the steel pipes, the shapes of the contact surfaces of the web members are changed, and the vertical shearing force on the welding positions in the prior art can be changed into the vertical pressure of the contact surfaces; in other words, force can be directly transmitted between the web members and the steel pipes through the web members and the groove structures, loads borne by the welding positions of the steel pipes and the web members can be shared when the steel pipe truss bears pressure, the situation that welding points are broken is avoided, and the overall strength of the steel pipe truss is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel tube trusses, in particular to a web bar embedded steel tube truss. Background Art

[0002] The steel tube truss is a spatial structure formed by connecting steel tubes and web members. The existing steel tube truss structure fixes the web members to the sides of the steel tubes by welding. The welding methods include vertex spot welding, tangent point multi-spot welding, contact line welding, etc. However, no matter which welding method is used, when the welded steel tube truss is subjected to external loads, the force between the steel tube and the web member will be directly applied to the welding point between the steel tube and the web member in the form of vertical shear force. The welding between the steel tube and the web member is at the arc tangent point, tangent position or other contact position between the two. The welding point area is very small, resulting in its own limited strength. When the load is too large, it is easy to cause the welding point to break, thereby affecting the overall strength of the steel tube truss. Utility Model Content

[0003] The purpose of the utility model is to provide a steel tube truss with embedded web bars, the top of which is embedded in a groove, and force can be transmitted between the web bars and the steel tube by the combination of the web bars and the groove structure. When the steel tube truss is load-bearing, the load borne at the welding point between the steel tube and the web bars can be shared, thereby greatly improving the connection strength between the steel tube and the web bars, and effectively improving and solving the problems in the prior art.

[0004] The technical solution adopted by the utility model to solve the technical problem is: comprising a steel pipe, grooves are provided on both sides of the steel pipe in the length direction, corresponding inner protrusions are provided inside the steel pipe corresponding to the positions of the grooves, and web bars with bent tops are provided on both sides of the steel pipe, and the tops of the web bars are embedded in the grooves and welded with the grooves. The grooves are arc-shaped grooves. The grooves are semicircular grooves. Fillers are provided inside the steel pipe. The cross-section of the steel pipe where no grooves are provided is circular. The cross-section of the steel pipe where no grooves are provided is oblong or elliptical. The cross-sectional area of ​​the inner contour of the steel pipe where the inner protrusion is provided is 70%-99% of the cross-sectional area of ​​the inner contour of the steel pipe where no inner protrusion is provided, that is, the reduction ratio of the inner protrusion of the steel pipe is 1%-30%. The cross-sectional area of ​​the inner contour of the steel pipe where the inner protrusion is provided is 90%-99% of the cross-sectional area of ​​the inner contour of the steel pipe where no inner protrusion is provided, that is, the reduction ratio of the inner protrusion of the steel pipe is 1%-10%. The depth of the groove is 0.5mm-7mm.

[0005] The positive effect of the utility model is that the web can fully contact and weld with the groove, and because the web is embedded in the groove of the steel pipe, the shape of the contact surface changes accordingly, and the vertical shear force on the welding position in the prior art can be changed into the vertical pressure on the contact surface, that is, the web and the steel pipe can be directly transmitted by the web and the groove structure, and when the steel pipe truss is under pressure, the load borne by the welding point of the steel pipe and the web can be shared, avoiding the occurrence of welding point fracture, and effectively improving the overall strength of the steel pipe truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0007] Figure 2 It is the front view of the utility model;

[0008] Figure 3 yes Figure 2 Left view of

[0009] Figure 4 yes Figure 2 A top view of

[0010] Figure 5 It is a schematic diagram of the structure in which the groove is arc-shaped;

[0011] Figure 6 It is a schematic diagram of the structure in which the groove is semicircular;

[0012] Figure 7 It is a schematic diagram of the structure in which fillers are arranged inside the steel pipe;

[0013] Figure 8 It is a structural schematic diagram of the utility model that the steel pipe adopts an oblong steel pipe;

[0014] Fig. 9 It is a structural schematic diagram that the steel pipe of the utility model adopts an elliptical steel pipe. DETAILED DESCRIPTION

[0015] The utility model discloses a web-bar embedded steel tube truss, such as Figure 1-4 As shown, it includes a steel pipe 1, and grooves 2 are provided on both sides of the length direction of the steel pipe 1. Corresponding to the position of the grooves 2, corresponding inner protrusions 3 are provided inside the steel pipe 1. Both sides of the steel pipe 1 are provided with web bars 4 with bent tops, and the tops of the web bars 4 are embedded in the grooves 2 and welded to the grooves 2. The grooves 2 refer to the area that is concave inwardly formed relative to the outer contour of the steel pipe 1.

[0016] The top of the web member 4 is embedded in the steel pipe 1, and the top of the web member 4 overlaps vertically with the groove part of the steel pipe. When the steel pipe truss bears the load, the web member 4 and the groove 2 structure directly transmit the force, which can share the load borne by the welding part of the steel pipe and the web member. In other words, the structure can change the shear force borne by the welding position of the prior art into the vertical pressure of the contact surface, that is, the web member and the steel pipe can directly transmit the force between the web member and the groove structure, and when the steel pipe truss is under pressure, it can share the load borne by the welding part of the steel pipe and the web member, thereby effectively improving the strength of the steel pipe truss. In addition, since the web member 4 is embedded in the groove 2, there is no obvious protruding structure on both sides of the outside of the steel pipe 1, which can effectively reduce the existing steel pipe trusses from being stuck to each other due to the protruding web members during stacking, transportation, and use. After the surface of the steel pipe is relatively flat, it is also easier to perform anti-rust treatment on its surface during use, and the relatively flat appearance is more beautiful when used in buildings.

[0017] The groove 2 of the present application can be in various shapes, wherein the preferred solution is that the groove 2 is an arc-shaped groove. When the groove is arc-shaped, it can better fit with the top of the web, limit the deformation space of the web to the greatest extent, and prevent the welding position from being separated. In addition, the groove can also be in various shapes such as a semicircular groove, a trapezoidal groove, etc., as long as it can be mutually fitted with the top of the truss.

[0018] The steel pipe 1 described in the present application can be a steel pipe of various shapes such as a circular steel pipe and a rectangular steel pipe, and the cross-section of the circular steel pipe, that is, the steel pipe 1 where no groove is set, is circular. When a circular steel pipe is used, the processing process does not need to distinguish the placement angle of the steel pipe, the processing process is convenient, and the pressure bearing capacity is good. In order to reduce the overall height of the steel pipe truss, the present application can also use an oblong steel pipe or an elliptical steel pipe, that is: the cross-section of the steel pipe 1 where no groove is set is an oblong or elliptical shape. When an oblong or elliptical steel pipe is used, the vertical thickness of the steel pipe is reduced relative to the circular steel pipe, which is beneficial to reducing the vertical space occupied by the steel pipe truss, and the oblong steel pipe is relatively easier to fix with a clamp during processing.

[0019] The protrusions 3 inside the steel pipe 1 described in the present application can have a diameter reduction effect on the steel pipe 1, and the rigidity of the steel pipe at the reduced diameter locations on both sides is stronger, and the performance of the steel pipe truss in withstanding vertical pressure is effectively improved. The reduction ratio can be flexibly selected according to the applicable occasion, and the usable reduction ratio is 1%-30%, that is, the cross-sectional area of ​​the inner contour of the steel pipe 1 where the inner protrusion 3 is set is 70%-99% of the cross-sectional area of ​​the inner contour of the steel pipe 1 where the inner protrusion 3 is not set. Within this range, the steel pipe can maintain its own strength. In the above range, the most preferred reduction ratio is 1%-10%, that is, the cross-sectional area of ​​the inner contour of the steel pipe 1 where the inner protrusion 3 is set is 90%-99% of the cross-sectional area of ​​the inner contour of the steel pipe 1 where the inner protrusion 3 is not set. This preferred ratio is the best solution obtained by comprehensively evaluating factors such as steel pipe strength, material cost, and processing efficiency during actual production. It can achieve better load-bearing performance of the steel pipe truss while meeting the requirements of efficient processing.

[0020] Furthermore, in order to improve the strength of the steel pipe 1, Figure 7 As shown, a filler 5 is provided inside the steel pipe 1. The filler 5 can be made of concrete or cement mortar, etc., to further enhance the rigidity of the steel pipe 1 and the pressure bearing capacity of the steel pipe truss. The inner protrusion 3 inside the steel pipe 1 allows the filler 5 inside the steel pipe 1 to be anchored to the steel pipe 1, thereby improving the vertical bearing performance of the steel pipe truss.

[0021] The depth of the groove 2 of the utility model is preferably 0.5mm-7mm. Within this range, the groove can cooperate with the truss web of conventional diameter on the market, so that the web is embedded therein, and there is enough space for the groove and the web to fully contact and weld.

Claims

1. A web member embedded steel tube truss, characterized in that: The invention comprises a steel pipe (1), wherein grooves (2) are provided on both sides of the steel pipe (1) in the length direction, and corresponding inner protrusions (3) are provided inside the steel pipe (1) corresponding to the positions of the grooves (2). Both sides of the steel pipe (1) are provided with webs (4) with bent tops, and the tops of the webs (4) are embedded in the grooves (2) and welded to the grooves (2).

2. The web member embedded steel tube truss according to claim 1, characterized in that: The groove (2) is an arc-shaped groove.

3. The web member embedded steel tube truss according to claim 1, characterized in that: The groove (2) is a semicircular groove.

4. The web member embedded steel tube truss according to claim 1, characterized in that: A filler (5) is provided inside the steel pipe (1).

5. The web member embedded steel tube truss according to claim 1, characterized in that: The cross section of the steel pipe (1) where no groove is provided is circular.

6. The web member embedded steel tube truss according to claim 1, characterized in that: The cross-section of the steel pipe (1) where no groove is provided is an oblong or elliptical shape.

7. The web member embedded steel tube truss according to claim 1, characterized in that: The cross-sectional area of ​​the inner contour of the steel pipe (1) where the inner protrusion (3) is provided is 70%-99% of the cross-sectional area of ​​the inner contour of the steel pipe (1) where the inner protrusion (3) is not provided, that is, the reduction ratio of the inner protrusion of the steel pipe (1) is 1%-30%.

8. The web member embedded steel tube truss according to claim 1, characterized in that: The cross-sectional area of ​​the inner contour of the steel pipe (1) where the inner protrusion (3) is provided is 90%-99% of the cross-sectional area of ​​the inner contour of the steel pipe (1) where the inner protrusion (3) is not provided, that is, the reduction ratio of the inner protrusion of the steel pipe (1) is 1%-10%.

9. The web member embedded steel tube truss according to claim 1, characterized in that: The depth of the groove (2) is 0.5 mm to 7 mm.

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