Wide-body steel bar truss with alternate web members

Abstract

The utility model discloses a web member alternating wide-body steel bar truss, which comprises an upper chord rib and a lower chord rib, web member ribs are arranged between the upper chord rib and the lower chord rib, the web member ribs are respectively connected with the upper chord rib and the lower chord rib to form a truss unit, and two truss units are spliced into a triangular truss by sharing the upper chord rib. Or a plurality of truss units are spliced into the continuous truss by alternately sharing the upper chord ribs and the lower chord ribs, and the connecting points of the web member ribs and the upper chord ribs or the lower chord ribs in the adjacent truss units are arranged in a staggered mode. According to the utility model, a wide-body steel bar truss can be produced, the problem of node conflict of the upper chord or the lower chord caused by the angle of the web member is effectively avoided, and mechanical production is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to building structure technical field especially relates to a kind of abdominal pole alternation wide body steel bar truss. BACKGROUND

[0002] At present, the steel bar truss used in building field is generally axisymmetric triangular steel bar truss, which is produced by special steel bar truss equipment, and web bar and upper and lower chord are connected by resistance pressure welding, wherein, due to the existence of two sides of web bar converging at a point at upper chord node, web bar needs to extend a certain distance from node due to resistance pressure welding process, in order to prevent collision of two sides of web bar, the angle of web bar is limited, so that the distance between lower chord of steel bar truss can only be 80mm wide.

[0003] However, in the use of building structure, especially in floor, generally, the steel bar spacing of 200mm can meet the use requirement, and the steel bar is wasted seriously by using the existing technology of 80mm wide steel bar truss, and the economy is poor. SUMMARY

[0004] In view of the above problems of prior art, the utility model provides a wide body type misplacement steel bar truss to solve the problems of limited spacing of lower chord, serious waste of steel bar and poor economy.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A kind of abdominal pole alternation wide body steel bar truss, including upper chord and lower chord, web bar is arranged between upper chord and lower chord, web bar is connected with upper chord and lower chord respectively to form a truss unit, two truss units are spliced into triangular truss by sharing upper chord, or multiple truss units are spliced into continuous truss by alternately sharing upper chord and lower chord, wherein, the connecting point of web bar and upper chord or lower chord in adjacent truss unit is staggered.

[0007] As optimization, the web bar is continuous and in wave shape, and the wave crest and wave trough are connected with upper chord and lower chord respectively.

[0008] Compared with prior art, the utility model has the following beneficial effects:

[0009] The utility model,

[0010] 1, the spacing of lower chord is no longer limited, and the mechanized production mode of wide body truss can be realized, which is suitable for producing wide body steel bar truss.

[0011] 2. The wide body truss is applied to the building structure, relative to the traditional triangular truss reinforcement is more reasonable, the steel consumption is lower, the economy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure schematic view of triangular truss in the utility model;

[0013] Figure 2 It is the structure schematic view of continuous truss in the utility model;

[0014] In the drawing, 1 is upper chord, 2 is lower chord, 3 is web member. DETAILED DESCRIPTION

[0015] The utility model will be further explained in detail in combination with the drawings.

[0016] Specific implementation:

[0017] Example one, see Figure 1 In order to solve the problems existing in prior art, increase the spacing of lower chord of steel truss, reduce the steel consumption, reduce the construction cost. A kind of web member alternate wide body steel truss structure is proposed, left and right two sides web member stagger half wavelength each other, so that wide body steel truss can be realized in production, effectively avoid the problem of upper chord node conflict caused by web member angle, realize mechanized production.

[0018] Specifically, the web member alternate wide body steel truss proposed in the utility model includes one upper chord 1 and two lower chords 2, the upper chord 1 and the lower chord 2 are parallel and are distributed in triangle, web member 3 is arranged between the upper chord 1 and the two lower chords 2, respectively forming two truss units, the two truss units share the upper chord 1, wherein the web member 3 on both sides of the upper chord 1 is connected with the upper chord 1 and is connected with the two lower chords 2 respectively, the connecting point of the web member 3 on both sides of the upper chord 1 with the upper chord 1 is staggered or staggered, so that the web member 3 on both sides is no longer interfered at the connection of the upper chord 1, so that the collision of the web member 3 at the upper chord 1 is avoided, therefore, the spacing between the two lower chords 2 can be designed according to the steel consumption, break through the limitation of traditional technology 80mm, so that the steel consumption of wide body steel truss is greatly saved under the premise of meeting the strength requirement, and the economy is improved.

[0019] Specifically, in the embodiment, the web member 3 adopts continuous and wave-shaped steel bars, the wave crest and wave trough are connected with the upper chord 1 and the lower chord 2 respectively, the wave-shaped web member 3 structure is simple, the bearing capacity is larger, and it is easy to produce and weld. Of course, in actual production, it can also be designed as a non-continuous form or other structure form according to needs.

[0020] In addition, in the embodiment, the distance between the connecting points of the web member 3 on both sides of the top chord 1 and the top chord 1 is staggered along the length direction of the top chord 1, and the distance is equal to half of the wavelength of the web member 3, so that the stress of the structure is more uniform, and the standard production is easy, and in practical application, the staggered distance is not limited to this, and can be set according to actual needs, but the premise is that the web members 3 on both sides do not interfere with each other.

[0021] Furthermore, in practical application, the connecting points of the web member 3 and the top chord 1 and the bottom chord 2 can be located in the plane of the top chord 1 and the bottom chord 2, or on the same side or the opposite side of the plane, and can be flexibly set according to the stress of the structure.

[0022] Embodiment two, as shown in the drawings, is different from embodiment one, Figure 2

[0023] In the embodiment, the top chord 1 and the bottom chord 2 are continuously and alternately distributed, the web member 3 is arranged between each top chord 1 and bottom chord 2 to form a truss unit, and a plurality of truss units are continuously distributed and alternately share the top chord 1 and the bottom chord 2 to form a continuous truss, and the connecting points of the web member 3 of adjacent truss units and the top chord 1 and the bottom chord 2 are staggered, so that the spacing between the adjacent top chord 1 and the adjacent bottom chord 2 has a larger setting range and can be flexibly set according to needs, without being limited by the welding interference of the web member 3, and the flexibility is improved.

[0024] In summary, the utility model,

[0025] 1. The spacing of the bottom chord is no longer limited, and the mechanized production mode of the wide-body truss can be realized, and the wide-body steel bar truss is suitable for production.

[0026] 2. The wide-body truss is applied to a building structure, and compared with the traditional triangular truss reinforcement, the wide-body truss is more reasonable and has lower steel consumption, and the economy is improved.

[0027] Although the embodiments of the utility model have been shown and described, for those skilled in the art, various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and basis of the utility model, the scope of the utility model is defined by the appended claims and their equivalents, therefore, the embodiments of the utility model are only for the description of the utility model, and the embodiments of the utility model do not constitute a limitation on the utility model in any aspect.​

Claims

1. A web alternate wide flange steel joist, characterized by, The upper chord and the lower chord are provided with web bars, the web bars are connected with the upper chord and the lower chord to form a truss unit, a plurality of truss units are spliced into a continuous truss by alternately sharing the upper chord and the lower chord, the connecting points of the web bars and the upper chord or the lower chord in adjacent truss units are staggered, the web bars are continuous and in a wave shape, the wave crests and the wave troughs of the web bars are connected with the upper chord and the lower chord respectively, and the distance by which the connecting points of the web bars on both sides of the upper chord and the upper chord are staggered along the length direction of the upper chord is equal to half the wavelength of the web bars.

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