Structural joint capable of being taken as skylight at turning position of steel grid frame

Abstract

The utility model relates to the technical field of steel truss roofs, in particular to a structural node capable of being taken as a skylight at a turning position of a steel truss, which comprises an upper roof truss and a lower roof truss, and a vertical rod for connecting the upper roof truss and the lower roof truss is arranged at a fall position of the upper roof truss and the lower roof truss. The upper ends of the vertical rods are directly or indirectly connected with an upper chord member and a lower chord member of the upper roof net rack, the lower ends of the vertical rods are directly or indirectly connected with an upper chord member and a lower chord member of the lower roof net rack, the array spacing of the vertical rods is equal to the modulus of a skylight, and transverse keels for supporting the skylight are welded between the vertical rods. According to the utility model, the force transmission of the steel grid structure at the turning part is simple and efficient, and the number of structural rod pieces at the turning part is greatly reduced; when the distance between the vertical rods is matched with the modulus of the skylight, the integrated design can optimize the keel quantity of the skylight, and the skylight modeling effect and the lighting quantity required by a building are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of steel grid roofs, in particular to a structural joint at the turning point of a steel grid that can take into account skylights. Background Technique

[0002] Space steel grid structures are increasingly used in the construction industry. The steel grid system can effectively reduce the total structural thickness while achieving large spans, which is beneficial to the realization of the indoor architectural effect. At the same time, due to the lighting requirements of large-span steel grid roofs, architects usually grade the roof at different elevations and set skylights at the drop-off points of each level to achieve a progressive facade effect and meet the lighting requirements. Therefore, how to design the steel grid structure at the turning point to take into account the skylight and structural stress has become the key to this structural system.

[0003] A common turning method in space steel grids is to turn both the upper and lower chords of the steel grid and then connect them. The width of the turning section is usually the same as the thickness of the steel grid, resulting in too many structural members at this point, making it appear rather bulky. At the same time, it leads to a large number of skylight keels and has a significant adverse impact on the lighting of the skylight. Content of the Utility Model

[0004] The purpose of the utility model is to provide a structural joint at the turning point of a steel grid that can take into account skylights in view of the deficiencies of the prior art. This joint can ensure simple and efficient force transmission of the steel grid structure at the turning point, and at the same time can significantly reduce the number of structural members at the turning point. And it takes into account the practice of curtain wall skylights, and the skylight keels can also be greatly optimized, and higher architectural effects and lighting can be obtained.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a structural joint at the turning point of a steel grid that can take into account skylights, including an upper roof grid and a lower roof grid. There is a vertical rod connecting the two at the drop-off point between the upper roof grid and the lower roof grid. The upper end of the vertical rod is directly or indirectly connected to the upper and lower chord rods of the upper roof grid, and the lower end of the vertical rod is directly or indirectly connected to the upper and lower chord rods of the lower roof grid. The array pitch of the vertical rods is equal to the module of the skylight, and a horizontal keel for supporting the skylight is welded between the vertical rods.

[0006] Preferably, the vertical rod is a rectangular tube, and stiffeners are provided at the welding positions corresponding to other members and the middle part of the vertical rod.

[0007] Preferably, the stiffener is a steel plate welded inside the vertical rod.

[0008] Preferably, the stiffener includes a reinforcing tube that can be inserted into the vertical rod and a reinforcing plate welded inside the reinforcing tube.

[0009] Preferably, the gap between the reinforcing tube and the vertical rod after the reinforcing tube is inserted into the vertical rod is less than 0.2 mm.

[0010] Preferably, the vertical rod is provided with plug weld holes facilitating the welding and fixing of the stiffening ribs.

[0011] Preferably, the vertical rod is provided with an external insertion plate whose elevation is aligned with the center line of the grid chord of the grid structure, and the external insertion plate is an isosceles trapezoid.

[0012] Preferably, when the upper roof grid or the lower roof grid is an orthogonal square grid, the upper and lower chord rods of the upper roof grid or the lower roof grid are connected to the vertical rod through the external insertion plate.

[0013] Preferably, when the upper roof grid or the lower roof grid is a square pyramid grid with square layout, the upper chord rod of the upper roof grid or the lower roof grid is connected to the vertical rod through the external insertion plate, and the lower chord rod of the upper roof grid or the lower roof grid is connected to two adjacent vertical rods through four diagonal rods.

[0014] Preferably, when the upper roof grid or the lower roof grid is a square pyramid grid with square layout, the grid unit of the upper roof grid or the lower roof grid close to the vertical rod is converted into an orthogonal square grid.

[0015] Preferably, the vertical rod is further provided with a diagonal brace supporting the upper chord rod of the upper roof grid or the lower roof grid.

[0016] Preferably, on the side of the upper end of the vertical rod facing away from the upper roof grid, there are an upper roof edge chord rod and an external brace supporting the upper roof edge chord rod, and the upper roof edge chord rod is a coaxial extension of the upper chord rod of the upper roof grid.

[0017] The beneficial effects of the present utility model are as follows: A structural node at the turning point of a steel grid structure that can accommodate a skylight includes an upper roof grid and a lower roof grid. At the drop between the upper roof grid and the lower roof grid, there is a vertical rod connecting the two. The upper end of the vertical rod is directly or indirectly connected to the upper and lower chord rods of the upper roof grid, and the lower end of the vertical rod is directly or indirectly connected to the upper and lower chord rods of the lower roof grid. The array pitch of the vertical rods is equal to the module of the skylight, and a transverse keel supporting the skylight is welded between the vertical rods. The present utility model can ensure that the force transmission at the turning point of the steel grid structure is simple and efficient, and at the same time, significantly reduces the number of structural members at the turning point; when the pitch of the vertical rods matches the module of the skylight, this integrated design can also optimize the skylight keel quantity, ensuring the skylight modeling effect and lighting quantity required by the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three - dimensional structural schematic diagram of a structural node at the turning point of a steel grid structure that can accommodate a skylight of the present utility model;

[0019] Figure 2It is a schematic plan view of a structural node at the turning point of a steel grid that can accommodate a skylight in the utility model;

[0020] Figure 3 It is Figure 2 the left view of;

[0021] Figure 4 It is Figure 2 the A-A sectional view of;

[0022] Figure 5 It is a partial enlarged view of B;

[0023] Figure 6 It is a partial enlarged view of C;

[0024] Figure 7 It is a schematic structural view of an embodiment of the utility model.

[0025] Explanation of reference numerals:

[0026] 1 - upper roof grid, 2 - lower roof grid, 3 - vertical rod, 4 - horizontal keel, 5 - stiffening rib, 51 - reinforcing pipe, 52 - reinforcing plate, 6 - plug weld hole, 7 - external insertion plate, 8 - diagonal bracing rod, 9 - upper roof edge chord, 10 - external bracing rod. Specific implementation mode

[0027] The following further elaborates on the utility model in detail in conjunction with the accompanying drawings and specific embodiments, and does not limit the implementation scope of the utility model thereto.

[0028] Embodiment 1.

[0029] As Figures 1 to 6 shown, a structural node at the turning point of a steel grid that can accommodate a skylight in this embodiment includes an upper roof grid 1 and a lower roof grid 2. A vertical rod 3 connecting the two is provided at the drop between the upper roof grid 1 and the lower roof grid 2. The upper end of the vertical rod 3 is directly or indirectly connected to the upper and lower chord members of the upper roof grid 1, and the lower end of the vertical rod 3 is directly or indirectly connected to the upper and lower chord members of the lower roof grid 2. The array pitch of the vertical rods 3 is equal to the module of the skylight, and a horizontal keel 4 supporting the skylight is welded between the vertical rods 3.

[0030] The upper roof grid 1 and the lower roof grid 2 are both two-layer orthogonal grids, and the vertical rod 3 is provided with an external plug-in plate 7 whose elevation is opposite to the center line of the grid chord. The upper and lower chords of the upper roof grid 1 are connected to the upper end of the vertical rod 3 through the external plug-in plate 7, and the upper and lower chords of the lower roof grid 2 are connected to the lower end of the vertical rod 3 through the external plug-in plate 7. During construction, a groove is cut in the middle of the upper and lower chords, and the external plug-in plate 7 is inserted into the groove and welded. In order to enhance the support of the vertical rod 3 to the upper roof grid 1 or the lower roof grid 2, the vertical rod 3 is also provided with a diagonal brace 8 supporting the upper chord of the upper roof grid 1 or the lower roof grid 2.

[0031] In addition, in order to keep out rain, an upper roof edge chord 9 and an outer support rod 10 supporting the upper roof edge chord 9 are provided on the side of the upper end of the vertical rod 3 facing away from the upper roof grid 1. The upper roof edge chord 9 is a coaxial extension of the upper chord of the upper roof grid 1.

[0032] When operating the roof grid and skylight nodes of this embodiment, the upper roof grid 1 and the lower roof grid 2 are first welded separately in the factory; then the vertical rod 3 is divided into an upper and lower section, the upper section of the vertical rod 3 is welded to the upper roof grid 1, and the horizontal keel 4 connected to the upper section of the vertical rod 3 is welded, and the lower section of the vertical rod 3 is welded to the lower roof grid 2, and the horizontal keel 4 connected to the lower section of the vertical rod 3 is welded; the third step is to hoist the upper and lower roof grids welded in the second step to the roof respectively, so that the upper and lower sections of the vertical rod 3 are aligned and welded. Here, in order to facilitate the alignment or adjustment of the upper and lower sections of the vertical rod 3, the vertical rod 3 in the second step can only be spot welded with the upper and lower roof grids and the horizontal keel 4; the fourth step is to assemble the skylight after all welding is completed.

[0033] The curtain wall skylight is installed on the vertical rod 3 and the horizontal keel 4. The vertical rod 3 of this embodiment adopts a rectangular tube. After the assembly welding is completed, along the vertical direction, in order to enhance the strength of the vertical rod 3, the vertical rod 3 is provided with stiffening ribs 5 at the welding positions corresponding to other rods and in the middle of the vertical rod 3, that is, the middle of the vertical rod 3 and the positions corresponding to the vertical rod 3 where the outer plug-in plate 7, the diagonal brace 8, the upper roof chord 9, and the outer brace 10 are welded are all provided with stiffening ribs 5.

[0034] Because the stiffening ribs 5 are inserted from both ends of the vertical rod 3, in order to facilitate the positioning of the stiffening ribs 5 in the vertical rod 3, the stiffening ribs 5 include a stiffening tube 51 that can be inserted into the vertical rod 3 and a stiffening plate 52 welded in the stiffening tube 51, and the vertical rod 3 is provided with a plug welding hole 6 for convenient welding and fixing of the stiffening ribs 5; in order to enable the stiffening ribs 5 to play a reinforcing role, the outer wall of the stiffening ribs 5 is preferably able to fit the inner wall of the vertical rod 3.

[0035] Embodiment 2.

[0036] As Figure 7 shown, when the upper roof space frame 1 or the lower roof space frame 2 is a square pyramid space frame placed upright, two methods can be used to connect the upper roof space frame 1 or the lower roof space frame 2 with the vertical rod 3. One method is that the upper chord of the upper roof space frame 1 or the lower roof space frame 2 is connected to the vertical rod 3 through the external insertion plate 7, and the lower chord of the upper roof space frame 1 or the lower roof space frame 2 is connected to two adjacent vertical rods 3 through four diagonal rods; the other method is that the space frame unit of the upper roof space frame 1 or the lower roof space frame 2 close to the vertical rod 3 is converted into an orthogonal square grid, and then the connection method of Embodiment 1 is adopted.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and for the convenience of describing the technical solutions, the front, back, left, right, up, middle, down and other orientations used are based on the attached drawings, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A structural node of a steel grid that can be used as a skylight at the turning point, characterized in that: It comprises an upper roof grid and a lower roof grid. A vertical rod connecting the upper roof grid and the lower roof grid is arranged at the height difference between the two. The upper end of the vertical rod is directly or indirectly connected to the upper and lower chord rods of the upper roof grid. The lower end of the vertical rod is directly or indirectly connected to the upper and lower chord rods of the lower roof grid. The array spacing of the vertical rods is equal to the module of the skylight. A horizontal keel supporting the skylight is welded between the vertical rods.

2. According to claim 1, the turning point of the steel grid can also be a structural node of the skylight, characterized in that: The vertical rod is a rectangular tube, and stiffening ribs are arranged in the vertical rod at welding positions corresponding to other rods and in the middle of the vertical rod.

3. According to claim 2, the turning point of the steel grid can also be a structural node of the skylight, characterized in that: The reinforcing rib comprises a reinforcing tube which can be inserted into the vertical rod and a reinforcing plate welded into the reinforcing tube. After the reinforcing tube is inserted into the vertical rod, a gap between the two is less than 0.2 mm.

4. According to claim 2, the turning point of the steel grid can also be a structural node of the skylight, characterized in that: The vertical rod is provided with a plug welding hole for facilitating welding and fixing of the stiffening rib.

5. According to claim 1, the turning point of the steel grid can also be a structural node of the skylight, characterized in that: The vertical rod is provided with an outer plug-in plate whose elevation is opposite to the center line of the grid chord rod, and the outer plug-in plate is an isosceles trapezoid.

6. The turning point of the steel grid according to claim 5 can also be a structural node of the skylight, characterized in that: When the upper roof grid or the lower roof grid is an orthogonal grid, the upper and lower chords of the upper roof grid or the lower roof grid are connected to the vertical rods through the external plug-in plates.

7. According to claim 5, the turning point of the steel grid can also be a structural node of the skylight, characterized in that: When the upper roof grid or the lower roof grid is an upright tetrahedral grid, the upper chord of the upper roof grid or the lower roof grid is connected to the vertical rods through the external plug-in plate, and the lower chord of the upper roof grid or the lower roof grid is connected to two adjacent vertical rods through four diagonal rods.

8. The turning point of the steel grid according to claim 1 can also be a structural node of the skylight, characterized in that: When the upper roof grid or the lower roof grid is an upright quadrangular pyramid grid, grid units of the upper roof grid or the lower roof grid close to the vertical rods are converted into orthogonal upright grids.

9. The turning point of the steel grid according to claim 1 can also be a structural node of the skylight, characterized in that: The vertical rod is also provided with an oblique support rod for supporting the upper roof grid or the upper chord rod of the lower roof grid.

10. The turning point of the steel grid according to claim 1 can also be a structural node of the skylight, characterized in that: An upper roof edge chord and an outer support rod supporting the upper roof edge chord are arranged on the side of the upper end of the vertical rod away from the upper roof grid, and the upper roof edge chord is a coaxial extension of the upper chord of the upper roof grid.

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