Connecting joint of large-span steel grating and space pipe truss and building

Abstract

The utility model relates to the technical field of steel structures, and discloses a connecting node of a large-span steel grating and a space pipe truss. First H-shaped steel, second H-shaped steel and a first square steel pipe are wrapped outside the space pipe truss through a bracket; the large-span steel grating is connected to the second H-shaped steel through a connecting plate assembly. The dead weight of the steel grating and the wind load, snow load and the like borne by the steel grating are transmitted to the second H-shaped steel through the connecting plate assembly. The second H-shaped steel uniformly transmits force to the space pipe truss through the first H-shaped steel, the first square steel pipe and the bracket, so that the problems of overlarge bending moment and torque of a pipe truss node caused by large-span steel grating connection are avoided, the space pipe truss is ensured to only bear node acting force, and the connection problem of the large-span steel grating and the space pipe truss is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structures, in particular to a connection node and a building between a large-span steel grid and a space tube truss. Background Art

[0002] The space tube truss has the advantages of simple shape, reasonable force, simple construction, and material saving. It is widely used in large-span buildings such as stadiums, airports, theaters, and exhibition centers. Considering the overall shape, the building will use large-span steel grilles in some hollow places. The steel grilles have a large span due to the architectural shape requirements. As a result, the cross-sectional height and self-weight of the steel grilles are large, and the connection between the large-span steel grilles and the space tube truss becomes a difficult point. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, a connection node and a building between a large-span steel grating and a spatial tube truss are provided to avoid the problem of excessive bending moment and torque at the tube truss node caused by the large-span steel grating connection, ensure that the spatial tube truss only bears the node force, and solve the connection problem between the large-span steel grating and the spatial tube truss.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] The connection node between the large-span steel grille and the space tube truss includes two upper chords and one lower chord parallel to each other in the space tube truss, and the lower chord and one of the upper chords are located on the same vertical plane; a plurality of steel grilles are arranged at intervals, and the steel grilles are vertically connected to the space tube truss through the connection node; the steel grille and the other upper chord are respectively located on both sides of the vertical plane;

[0006] The invention is characterized in that: the connection node includes a support fixed on the upper chord or the lower chord, a plurality of first H-shaped steels arranged parallel to the plane where the two upper chords are located, a plurality of second H-shaped steels arranged parallel to the vertical plane, a first square steel pipe arranged parallel to the lower chord, and a connection plate assembly connected between the second H-shaped steel and the steel grating; the first H-shaped steel and the upper chord, the second H-shaped steel and the upper chord, and the first square steel pipe and the lower chord are all connected through the support, the top and bottom ends of the second H-shaped steel are respectively fixedly connected between the first H-shaped steel and the first square steel pipe, and end sealing plates are arranged at the ends of the first H-shaped steel.

[0007] According to the above technical solution, the space tube truss includes a web member and an upper chord support. The upper chord support is welded between two upper chord members in a Z-shape, and the web member is welded between the upper chord member and the lower chord member in a quadrangular pyramid shape.

[0008] According to the above technical solution, the connection points between each web member and upper chord support and the upper chord member and lower chord member in the vertical plane are the upper chord node a and the lower chord node b respectively, and the second H-shaped steel transmits the force to the upper chord node a of the spatial tube truss and the lower chord node b of the spatial tube truss through the first H-shaped steel, the first square steel tube and the support.

[0009] According to the above technical scheme, supports are respectively arranged at the upper chord node a of the spatial tube truss and the lower chord node b of the spatial tube truss; the first H-shaped steel is welded to the support at the upper chord node a of the spatial tube truss; the first square steel pipe is welded to the support at the lower chord node b of the spatial tube truss; the flange of the second H-shaped steel is connected to the support at the upper chord node a of the spatial tube truss by ordinary bolts, the upper end is connected to the lower flange of the first H-shaped steel by high-strength bolts, and the lower end is welded to the first square steel pipe.

[0010] According to the above technical solution, a vertical oblong hole is opened at the flange of the second H-shaped steel connected to the support at the position corresponding to the common bolt, and the screw rod of the common bolt is located at the center of the oblong hole after installation.

[0011] According to the above technical scheme, the support includes a supporting round steel tube, a supporting bottom plate and a supporting stiffening plate; one end of the supporting round steel tube is connected to the supporting bottom plate by a fillet weld, and the other end is connected to the upper chord or lower chord of the space tube truss by an intersecting weld; the support stiffening plate includes multiple pieces, which are arranged at equal angles and are respectively connected to the supporting round steel tube and the supporting bottom plate by fillet welds.

[0012] According to the above technical scheme, the first stiffening plates are respectively arranged on both sides of the web of the first H-shaped steel and in the areas corresponding to the supporting round steel pipes; the second stiffening plates are respectively arranged on both sides of the web of the first H-shaped steel and in the areas corresponding to the flanges and the middle axis of the second H-shaped steel; the third stiffening plates are respectively arranged on both sides of the web of the second H-shaped steel and in the areas corresponding to the supporting ends and the middle axis; the fourth stiffening plates are respectively arranged at equal distances on both sides of the web of the second H-shaped steel and in the range from the third stiffening plate to the lower end of the connecting plate assembly, and the position and number of the fourth stiffening plates are appropriately adjusted according to the height of the steel grille, and at least 2 are arranged; the fifth stiffening plates are respectively arranged on both sides of the web of the second H-shaped steel and in the areas corresponding to the positions of the second stiffening plates at the middle axis.

[0013] According to the above technical solution, a second square steel pipe is arranged between two adjacent second H-shaped steels, at the third stiffening plate and the fourth stiffening plate; both ends of the second square steel pipe are welded to the web of the second H-shaped steel.

[0014] According to the above technical solution, the connecting plate assembly includes a first rectangular steel plate, an L-shaped steel plate and a second rectangular steel plate; the first rectangular steel plate and the second rectangular steel plate adopt on-site full penetration welds, and the L-shaped steel plate and the second rectangular steel plate adopt on-site fillet welds; the net distance between the first rectangular steel plate and the L-shaped steel plate is equal to the width of the steel grille;

[0015] According to the above technical scheme, the second rectangular steel plate is welded to the flange of the second H-shaped steel; the steel grating adopts a rectangular steel pipe, and a rectangular steel pipe end sealing plate is arranged at the end of the steel grating; after the steel grating is positioned between the first rectangular steel plate and the L-shaped steel plate by installing bolts, its web is welded to the first rectangular steel plate and the L-shaped steel plate respectively.

[0016] A building, characterized in that it comprises a connection node between the large-span steel grille and the space tube truss; the steel grille is in a straight line or a curve according to the building shape.

[0017] The utility model has the following beneficial effects:

[0018] The first H-shaped steel, the second H-shaped steel, and the first square steel pipe are supported on the outside of the space tube truss; the long-span steel grating is connected to the second H-shaped steel through the connecting plate assembly; the deadweight of the steel grating and the wind load, snow load, etc. it receives transmit the force to the second H-shaped steel through the connecting plate assembly. The second H-shaped steel transmits the force to the space tube truss evenly through the first H-shaped steel, the first square steel pipe and the support, thereby avoiding the problem of excessive bending moment and torque at the tube truss node caused by the long-span steel grating connection, ensuring that the space tube truss only bears the node force, and solving the connection problem between the long-span steel grating and the space tube truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a top view schematic diagram of a connection node provided in an embodiment of the utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of the inter-tube truss provided in the embodiment of the utility model;

[0021] Figure 3 yes Figure 1 AA section view;

[0022] Figure 4 This is a large sample drawing of an oblong hole in an embodiment provided by the utility model;

[0023] Figure 5 yes Figure 2 Detailed drawing of the support;

[0024] Figure 6 yes Figure 5 BB cross-section diagram;

[0025] Figure 7 It is a detailed diagram of the connecting plate assembly of the embodiment provided by the utility model;

[0026] Figure 8 yes Figure 3 CC profile of ;

[0027] In the figure: 1-spatial tube truss; 101-upper chord; 102-lower chord; 103-web member; 104-upper chord support; 2-steel grille; 301-first H-shaped steel; 302-second H-shaped steel; 401-first square steel pipe; 402-second square steel pipe; 5-support; 501-support round steel pipe; 502-support bottom plate; 503-support stiffening plate; 601-first stiffening plate; 602-second stiffening plate; 60 3-third stiffening plate; 604-fourth stiffening plate; 605-fifth stiffening plate; 701-ordinary bolts; 702-high-strength bolts; 703-mounting bolts; 704-long round holes; 8-connecting plate assembly; 801-first rectangular steel plate; 802-L-shaped steel plate; 803-second rectangular steel plate; 9-H-shaped steel end sealing plate; 10-rectangular steel pipe end sealing plate; a-upper chord node of spatial tube truss; b-lower chord node of spatial tube truss. DETAILED DESCRIPTION

[0028] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0029] Reference Figures 1 to 8 As shown, the utility model provides a connection node between a large-span steel grille and a space tube truss.

[0030] Example 1

[0031] The space tube truss 1 includes two upper chords 101 and a lower chord 102 which are parallel to each other, and the lower chord and one of the upper chords are located on the same vertical plane; a plurality of steel grids 2 are arranged at intervals, and the steel grids are vertically connected to the space tube truss through connection nodes; the steel grids and the other upper chord are respectively located on both sides of the vertical plane;

[0032] The connection node comprises a support 5 fixed on the upper chord or the lower chord, a plurality of first H-shaped steels 301 arranged parallel to the plane where the two upper chords are located, a plurality of second H-shaped steels 302 arranged parallel to the vertical plane, a first square steel pipe 401 arranged parallel to the lower chord, and a connection plate assembly 8 connected between the second H-shaped steel and the steel grid; the first H-shaped steel and the upper chord, the second H-shaped steel and the upper chord, and the first square steel pipe and the lower chord are all connected by the support, and the top and bottom ends of the second H-shaped steel are fixedly connected between the first H-shaped steel and the first square steel pipe, respectively. In the embodiment shown in the figure, an H-shaped steel end sealing plate 9 is provided at the end of the first H-shaped steel.

[0033] In this embodiment, the first H-shaped steel, the second H-shaped steel, and the first square steel pipe are supported outside the space tube truss; the long-span steel grating is connected to the second H-shaped steel through the connecting plate assembly; the deadweight of the steel grating and the wind load, snow load, etc. it receives transmit the force to the second H-shaped steel through the connecting plate assembly. The second H-shaped steel transmits the force to the space tube truss evenly through the first H-shaped steel, the first square steel pipe and the support, thereby avoiding the problem of excessive bending moment and torque at the tube truss node caused by the connection of the long-span steel grating, ensuring that the space tube truss only bears the node force, and solving the connection problem between the long-span steel grating and the space tube truss.

[0034] Example 2

[0035] The structure and principle of Example 2 are similar to those of Example 1, except that a preferred structural form of a spatial tube truss is provided.

[0036] The space tube truss comprises a web member 103 and an upper chord support 104. The upper chord support is welded between two upper chord members in a Z-shaped manner, and the web member is welded between the upper chord member and the lower chord member in a quadrangular pyramid shape. In this embodiment, the upper chord member, the lower chord member, the upper chord support, and the web member are all round steel tubes.

[0037] In Example 2, preferably Figure 2 As shown, the connection points between each web member and upper chord support and the upper chord member and the lower chord member in the vertical plane are the upper chord node a and the lower chord node b respectively, and the second H-shaped steel transmits the force to the upper chord node a of the spatial tube truss and the lower chord node b of the spatial tube truss through the first H-shaped steel, the first square steel pipe and the support, thereby avoiding the problem of excessive bending moment and torque of the tube truss node caused by the connection of the long-span steel grating, ensuring that the spatial tube truss only bears the node force, and solving the connection problem between the long-span steel grating and the spatial tube truss.

[0038] Specifically, Figure 2 to Figure 4 As shown, supports are respectively provided at the upper chord node a of the spatial tube truss and the lower chord node b of the spatial tube truss; the first H-shaped steel is welded to the support at the upper chord node a of the spatial tube truss; the first square steel pipe is welded to the support at the lower chord node b of the spatial tube truss; the flange of the second H-shaped steel is connected to the support at the upper chord node a of the spatial tube truss by ordinary bolts 701, the upper end is connected to the lower flange of the first H-shaped steel by high-strength bolts 702, and the lower end is welded to the first square steel pipe.

[0039] In order to avoid the second H-shaped steel directly transferring the bending moment of the steel grid to the upper chord node a of the space tube truss through the support, as shown in Figure 3 , Figure 4 As shown, a vertical oblong hole 704 is provided on the flange of the second H-shaped steel connected to the support at a position corresponding to a common bolt. After installation, the screw rod of the common bolt is located at the center of the oblong hole.

[0040] Example 3

[0041] The structure and principle of Example 3 are similar to those of Example 1, except that a preferred support structure is provided.

[0042] The support includes a support round steel tube 501, a support bottom plate 502 and a support stiffening plate 503; one end of the support round steel tube is connected to the support bottom plate by a fillet weld, and the other end is connected to the upper chord or lower chord of the space tube truss by an intersecting weld; the support stiffening plate includes multiple pieces, which are arranged at equal angles and are respectively connected to the support round steel tube and the support bottom plate by fillet welds. In the embodiment shown in the figure, there are four support stiffening plates in total, which are arranged at 90 degrees.

[0043] Example 4

[0044] The structure and principle of Example 4 are similar to those of Examples 1-3, except that: in order to ensure continuous force transmission, first stiffening plates 601 are respectively arranged on both sides of the web of the first H-shaped steel and in the area corresponding to the supporting round steel pipe (two first stiffening plates are arranged in the figure); second stiffening plates 602 are respectively arranged on both sides of the web of the first H-shaped steel and in the area corresponding to the flange and the middle axis of the second H-shaped steel (three second stiffening plates are arranged in the figure); third stiffening plates 603 are respectively arranged on both sides of the web of the second H-shaped steel and in the area corresponding to the end of the support and the middle axis (three third stiffening plates are arranged in the figure); fourth stiffening plates 604 are respectively arranged at equal distances on both sides of the web of the second H-shaped steel 302 and in the range from the third stiffening plate to the lower end of the connecting plate assembly, and the position and number of the fourth stiffening plates are appropriately adjusted according to the height of the steel grille, and at least two are arranged; fifth stiffening plates 605 are respectively arranged on both sides of the web of the second H-shaped steel and in the area corresponding to the position of the second stiffening plate at the middle axis (one fifth stiffening plate is arranged in the figure).

[0045] In Example 4, in order to further increase the longitudinal stiffness of the connection node and meet the curtain wall installation requirements, a plurality of second square steel pipes 402 are provided between two adjacent second H-shaped steels; preferably, the second square steel pipes are provided at the third stiffening plate and the fourth stiffening plate, and the two ends are respectively welded to the web of the second H-shaped steel. The number of second square steel pipes in the figure is 2, and the position and number of the second square steel pipes can be appropriately adjusted according to the building shape and the height of the steel grille, and are not limited to the 2 in this preferred embodiment.

[0046] In Examples 1-4, Figure 3 , Figure 7 , Figure 8As shown, the connecting plate assembly includes a first rectangular steel plate 801, an L-shaped steel plate 802 and a second rectangular steel plate 803; the first rectangular steel plate and the second rectangular steel plate adopt on-site full penetration welds, and the L-shaped steel plate and the second rectangular steel plate adopt on-site fillet welds; the net distance between the first rectangular steel plate and the L-shaped steel plate is equal to the width of the steel grille;

[0047] The second rectangular steel plate is welded to the flange of the second H-shaped steel; the steel grating adopts a rectangular steel pipe, and a rectangular steel pipe end sealing plate 10 is set at the end of the steel grating; after the steel grating is positioned between the first rectangular steel plate and the L-shaped steel plate by installing bolts 703, its web is welded to the first rectangular steel plate and the L-shaped steel plate respectively.

[0048] The present invention also provides a building, characterized in that: it includes a connection node between the large-span steel grille and the space tube truss; the steel grille is in a straight line or a curve according to the building shape. The steel grille span applicable to the connection node can reach about 25 meters, and the steel grille can be in a straight line or a curve according to the building shape.

[0049] The working principle of this utility model:

[0050] The large-span steel grating is connected to the second H-shaped steel through the connecting plate assembly; the deadweight of the steel grating and the wind load, snow load, etc. it receives transmit the force to the second H-shaped steel through the connecting plate assembly. The second H-shaped steel evenly transmits the force to the space tube truss through the first H-shaped steel, the first square steel pipe and the support, thus avoiding the problem of excessive bending moment and torque at the tube truss node caused by the large-span steel grating connection, ensuring that the space tube truss only bears the node force, and solving the connection problem between the large-span steel grating and the space tube truss.

[0051] The above are only preferred embodiments of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of patent application of the present invention still fall within the protection scope of the present invention.

Claims

1. The connection node between the large-span steel grille and the space tube truss includes two upper chords and one lower chord parallel to each other in the space tube truss, and the lower chord and one of the upper chords are located on the same vertical plane; a plurality of steel grilles are arranged at intervals, and the steel grilles are vertically connected to the space tube truss through the connection node; the steel grille and the other upper chord are respectively located on both sides of the vertical plane; Features: The connection node includes a support fixed on the upper chord or the lower chord, a plurality of first H-shaped steels arranged parallel to the plane where the two upper chords are located, a plurality of second H-shaped steels arranged parallel to the vertical plane, a first square steel pipe arranged parallel to the lower chord, and a connection plate assembly connected between the second H-shaped steel and the steel grating; the first H-shaped steel and the upper chord, the second H-shaped steel and the upper chord, and the first square steel pipe and the lower chord are all connected through the support, and the top and bottom ends of the second H-shaped steel are respectively fixedly connected between the first H-shaped steel and the first square steel pipe.

2. The connection node between the large-span steel grid and the space tube truss according to claim 1, characterized in that: The space tube truss comprises a web member and an upper chord support, wherein the upper chord support is welded between two upper chord members in a Z-shape, and the web member is welded between the upper chord member and the lower chord member in a quadrangular pyramid shape.

3. The connection node between the large-span steel grid and the space tube truss according to claim 2 is characterized in that: The connection points of each web member and upper chord support with the upper chord member and lower chord member in the vertical plane are the upper chord node a and the lower chord node b respectively. The second H-shaped steel transmits the force to the upper chord node a of the spatial tube truss and the lower chord node b of the spatial tube truss through the first H-shaped steel, the first square steel tube and the support.

4. The connection node between the large-span steel grid and the space tube truss according to claim 3 is characterized by: Supports are respectively arranged at the upper chord node a of the spatial tube truss and the lower chord node b of the spatial tube truss; the first H-shaped steel is welded to the support at the upper chord node a of the spatial tube truss; the first square steel pipe is welded to the support at the lower chord node b of the spatial tube truss; the flange of the second H-shaped steel is connected to the support at the upper chord node a of the spatial tube truss by ordinary bolts, the upper end is connected to the lower flange of the first H-shaped steel by high-strength bolts, and the lower end is welded to the first square steel pipe.

5. The connection node between the large-span steel grid and the space tube truss according to claim 4 is characterized in that: A vertical oblong hole is provided on the flange of the second H-shaped steel connected to the support at a position corresponding to the common bolt. After installation, the screw rod of the common bolt is located at the center of the oblong hole.

6. The connection node between the large-span steel grid and the space tube truss according to any one of claims 1 to 5, characterized in that: The support includes a supporting round steel pipe, a supporting bottom plate and a supporting stiffening plate; one end of the supporting round steel pipe is connected to the supporting bottom plate by a fillet weld, and the other end is connected to the upper chord or lower chord of the space tube truss by an intersecting weld; the supporting stiffening plate includes multiple pieces, which are arranged at equal angles and are respectively connected to the supporting round steel pipe and the supporting bottom plate by fillet welds.

7. The connection node between the large-span steel grid and the space tube truss according to any one of claims 1 to 5, characterized in that: The first stiffening plates are respectively arranged on both sides of the web of the first H-shaped steel and in the areas corresponding to the supporting round steel pipes; the second stiffening plates are respectively arranged on both sides of the web of the first H-shaped steel and in the areas corresponding to the flanges and the middle axis of the second H-shaped steel; the third stiffening plates are respectively arranged on both sides of the web of the second H-shaped steel and in the areas corresponding to the ends and the middle axis of the supports; the fourth stiffening plates are respectively arranged at equal distances on both sides of the web of the second H-shaped steel and in the range from the third stiffening plate to the lower end of the connecting plate assembly, and the position and number of the fourth stiffening plates are appropriately adjusted according to the height of the steel grille, and at least 2 are arranged; the fifth stiffening plates are respectively arranged on both sides of the web of the second H-shaped steel and in the areas corresponding to the positions of the second stiffening plates at the middle axis.

8. The connection node between the large-span steel grid and the space tube truss according to claim 7, characterized in that: A second square steel pipe is arranged between two adjacent second H-shaped steels at the third stiffening plate and the fourth stiffening plate; two ends of the second square steel pipe are respectively welded to the web of the second H-shaped steel.

9. The connection node between the large-span steel grid and the space tube truss according to claim 1, characterized in that: The connecting plate assembly includes a first rectangular steel plate, an L-shaped steel plate and a second rectangular steel plate; the first rectangular steel plate and the second rectangular steel plate adopt on-site full penetration welds, and the L-shaped steel plate and the second rectangular steel plate adopt on-site fillet welds; the net distance between the first rectangular steel plate and the L-shaped steel plate is equal to the width of the steel grille; The second rectangular steel plate is welded to the flange of the second H-shaped steel; the steel grating adopts a rectangular steel pipe, and a rectangular steel pipe end sealing plate is arranged at the end of the steel grating; after the steel grating is positioned between the first rectangular steel plate and the L-shaped steel plate by installing bolts, its web is welded to the first rectangular steel plate and the L-shaped steel plate respectively.

10. A building, characterized in that: It comprises a connection node between a large-span steel grille and a space tube truss as described in any one of claims 1 to 9; the steel grille is in a straight line or a curved line according to the building shape.

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