Truss connection nodes, truss structures and roofs

Abstract

The present invention relates to the technical field of steel structure, and provides a truss connection node, a truss structure and a roof. The truss connection node includes a structural column and a plug plate, the plug plate runs through the structural column, the plug plate includes an inner portion and an outer extension portion, a connecting beam is provided on the outer extension portion, a plug-in portion is provided on the connecting beam, the connecting beam is butted with the outer extension portion through the plug-in portion, and the force transmission between the connecting beam and the structural column is realized through the weld between the plug plate and the connecting beam and the structural column. The force transmission is direct, the bearing capacity is large, and the strength is high. The problems of increased cost and manufacturing trouble caused by increasing the diameter or wall thickness of the pipe wall at the connection due to insufficient strength of the intersecting node, or even using cast steel nodes, etc. are solved. At the same time, compared with the conventional intersecting welding solution, the welding difficulty can be reduced, and the on-site construction is convenient. The truss structure with the truss connection node and the roof with the truss structure also have the above-mentioned beneficial effects.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structures, and in particular to a truss connection node, a truss structure and a roof. Background Art

[0002] In the roof steel structure, the truss connection node is an important structure that bears force and load. The connection reliability of the node is an important measure to ensure the stability of the steel structure. The upper and lower chords are usually installed by intersecting welding. However, for chords with larger spans, the strength of the intersecting nodes is difficult to meet the requirements. In this case, in order to improve the bearing capacity of this part, the pipe diameter or wall thickness of the pipe wall at the connection is generally increased, and sometimes cast steel nodes are needed as a substitute. The former causes the cross-section interface to increase, and the stress concentration at the connection position makes welding difficult and the construction time long; the latter has a higher cost and a long production cycle, which increases the project cost. Summary of the invention

[0003] The present invention aims to provide a truss connection node with high strength and convenient construction, a truss structure with the truss connection node, and a roof with the truss structure.

[0004] According to one aspect of an embodiment of the present invention, a truss connection node is provided, comprising a structural column and a plug plate, wherein the plug plate passes through the structural column, the plug plate comprises an inner portion and an outer portion, the inner portion is located inside the structural column, and the outer portion extends from the outer wall surface of the structural column; a connecting beam is provided on the outer portion, a plug-in portion is provided on the connecting beam, the connecting beam is connected to the outer portion through the plug-in portion, the edge of the plug-in portion is fixedly connected to the joint of the outer portion, and the end of the connecting beam is fixedly connected to the outer surface of the structural column.

[0005] As an improvement of the above technical solution, the edge of the built-in portion is in contact with the inner wall of the structural column.

[0006] As a further improvement of the above technical solution, the built-in portion and the extended portion are an integrated structure, and the plug plate is bent along a vertical axis on the built-in portion.

[0007] As a further improvement of the above technical solution, the extending portion includes a first extending portion and a second extending portion, the first extending portion and the second extending portion are respectively located on both sides of the built-in portion, the first extending portion includes a pair of side edges parallel to each other and an outer edge connecting the side edges, the side edges form a set angle α with the vertical axis, and α is an acute angle.

[0008] As a further improvement of the above technical solution, the structural column includes a main column body and a corbel beam connected to the outer side of the main column body, and the insert plate passes through the corbel beam.

[0009] As a further improvement of the above technical solution, the corbel beam is a box-shaped structure, and the webs on both sides of the corbel beam are respectively provided with plug-in openings for the extension portion to pass through, and the extension portion of the plug-in plate extends out of the outer surface of the corbel beam from the plug-in openings.

[0010] As a further improvement of the above technical solution, inner partitions are respectively arranged on both sides of the plug plate inside the corbel beam, and the two side edges of each inner partition are respectively fixedly connected to the inner wall of the web of the corbel beam.

[0011] As a further improvement of the above technical solution, the two side edges of each of the inner partitions correspond to the two side edge positions of the connecting beam located on the plug plate.

[0012] As a further improvement of the above technical solution, a vertical stiffening plate is arranged inside the main column, and one side edge of the vertical stiffening plate corresponds to the connection between the corbel beam and the outer side of the main column, and is fixedly connected to the inner wall of the main column.

[0013] Another aspect of an embodiment of the present invention provides a truss structure, including a first upper chord, a second upper chord and the above-mentioned truss connection node, and the end faces of the first upper chord and the second upper chord are respectively fixedly connected to the end faces of the connecting beam.

[0014] Another aspect of the embodiment of the present invention further provides a roof comprising the above-mentioned truss structure.

[0015] The above technical solution has at least the following advantages or beneficial effects:

[0016] The truss connection node includes a structural column and a plug plate, the plug plate runs through the structural column, the plug plate includes an inner portion and an outer portion, the inner portion is located inside the structural column, and the outer portion extends from the outer wall surface of the structural column; a connecting beam is provided on the outer portion, and a plug-in portion is provided on the connecting beam, the connecting beam is butted with the outer portion through the plug-in portion, the edge of the plug-in portion is fixedly connected to the joint of the outer portion, the end of the connecting beam is fixedly connected to the outer surface of the structural column, and the force transmission between the connecting beam and the structural column is realized through the weld between the plug plate and the connecting beam and the structural column. The force transmission is direct, the bearing capacity is large, and the strength is high. The problems of increased cost and manufacturing trouble caused by increasing the diameter or wall thickness of the pipe wall at the connection due to insufficient strength of the intersecting node, or even using cast steel nodes, etc. are solved. At the same time, compared with the conventional intersecting welding solution, the welding difficulty can be reduced, which is convenient for on-site construction. The truss structure with the truss connection node and the roof with the truss structure also have the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief description of the drawings required for describing the embodiments:

[0018] Figure 1 A structural schematic diagram of an embodiment of a truss connection node;

[0019] Figure 2 for Figure 1 Schematic diagram of section 1a-1a in FIG.

[0020] Figure 3 for Figure 1 Schematic diagram of section 1b-1b in FIG.

[0021] Figure 4 for Figure 1 Schematic diagram of section 1c-1c in FIG.

[0022] Figure 5 A partial cross-sectional schematic diagram of a plug board in an embodiment;

[0023] Figure 6 A schematic diagram of an embodiment of a plug board. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connecting accessories according to the specific implementation situation. The description of the upper, lower, left, right and other directions involved in the present invention is only relative to the relative position relationship of the various components of the present invention in the drawings. The various technical features in the present invention can be combined interchangeably without conflicting with each other.

[0025] Figure 1 A structural schematic diagram of an embodiment of a truss connection node; Figure 2 for Figure 1 Schematic diagram of section 1a-1a in FIG. Figure 3 for Figure 1 Schematic diagram of section 1b-1b in FIG. Figure 4 for Figure 1 1c-1c section diagram in the figure, and refer to Figures 1 to 4 A truss structure provided by an embodiment of the present invention includes a plurality of chords and a truss connection node 200, and the ends of the chords are connected to the truss connection node 200. Of course, the truss connection node 200 can also be used to connect components such as cantilever beams.

[0026] The truss connection node 200 includes a structural column 220 and a plug plate 240, the plug plate 240 runs through the structural column 220, and the plug plate 240 includes an inner portion 242 and an outer portion 244, the inner portion 242 is located inside the structural column 220, and the outer portion 244 extends from the outer wall surface of the structural column 220; a connecting beam 260 is provided on the outer portion 244, and a plug-in portion 262 is provided on the connecting beam 260, which is specifically a slot for plugging the plug plate 240, which can be a slot with a length of 0.5 to 1 times the diameter (for example, the slot can be 0.5 times, 0.6 times, 0.7 times, 0.8 times, 0.9 times or 1 times the diameter), the connecting beam 260 is connected to the outer portion 244 through the plug-in portion 262, and the edge of the plug-in portion 262 is connected to the outer portion 2 The joint of 44 is fixedly connected (it can be fixedly connected by welding), the end of the connecting beam 260 is fixedly connected to the outer surface of the structural column 220 (it can be fixedly connected by welding), and the force transmission between the connecting beam 260 and the structural column 220 is realized through the plug plate 240 and the weld between the connecting beam 260 and the structural column 220. The force transmission is direct and the bearing capacity is large. It avoids the problems of increased cost and manufacturing trouble caused by increasing the diameter or wall thickness of the pipe wall at the connection due to insufficient strength of the intersecting node, or even using cast steel nodes. At the same time, compared with the conventional intersecting welding solution, the welding difficulty can be reduced; on site, it is only necessary to butt the truss chord with the connecting beam 260 and weld the butt weld, which greatly reduces the difficulty of on-site construction, reduces the construction time and can better ensure the welding quality.

[0027] refer to Figure 5 To facilitate observation of the edge of the plug plate 240, the plug plate 240 is filled with dotted and dashed diagonal lines in the figure. The edge of the built-in portion 242 of the plug plate 240 is abutted against the inner wall of the structural column 220, thereby achieving force transmission between the plug plate 240 and the structural column 220, which helps to enhance the strength of the truss connection node.

[0028] refer to Figure 4 and Figure 6The built-in portion 242 and the extended portion 244 of the plug plate 240 can be set as an integrated structure. The whole plate is cut during processing, which can improve the reliability of the connection between the plug plate 240 and the structural column 220. The plug plate 240 is bent along a vertical axis on the built-in portion 242 to form a special-shaped bent plate, which can adapt to the installation of a chord with a set horizontal angle. The specific bending angle is set according to the horizontal angle required by the chord. In specific implementation, the plug plate 240 can extend from the outer wall surface on both sides of the structural column 220, thereby forming an extended portion on both sides of the structural column 220. The extended portion 244 includes a first extended portion 2442 and a second extended portion 2444. The first extended portion 2442 and the second extended portion 2444 are respectively located on both sides of the built-in portion 242. The first extended portion 2442 includes a pair of side edges parallel to each other and an outer edge connecting the side edges. The side edges form a set angle α with the vertical axis, and α is an acute angle. After the installation of the plug plate 240 is completed, the center line of the first extension 2442 is tilted upward relative to the vertical direction, and the connecting beams 260 and 260' are respectively assembled on the first extension 2442 and the second extension 2444. Thus, the truss connection node 200 formed after the first extension 2442 is assembled with the connecting beam 260 can be used for the installation of the upper chord of the inverted triangle truss. It is only necessary to butt the upper chord with the inclined connecting beam 260 on the first extension 2442, and then weld the butt weld. For the inverted triangle truss structure, if the upper chord is directly welded, its cross-sectional interface will be very large, making welding difficult, which is not conducive to on-site construction, resulting in an increase in engineering cost, and stress concentration at the joint position, weakened node strength, making it difficult to meet standard requirements. The truss connection node 200 of the above embodiment of the present invention is suitable for the connection of the inverted triangle truss structure, and solves the problems of excessively large cross-sectional interface, great welding difficulty, stress concentration at the joint position, and weakened node strength caused by the direct welding method. The second extension portion 2444 may extend in a horizontal direction. After the second extension portion 2444 is assembled with a corresponding connection beam 260 ′, it may be used to connect a horizontally extending chord.

[0029] At the truss connection node 200 , the reserved length D of the connection beams 260 , 260 ′ is greater than the length d of the extension portion 244 of the plug plate 240 , and may be set to D≥200+0.5-1.0d.

[0030] Also refer to Figures 2 to 4The structural column 220 includes a main column 222 and a corbel beam 224 connected to the outer sides of the main column 222. The corbel beam 224 is used to connect the chord and transfer the load from the chord. The plug plate 240 runs through the corbel beam 224, so it can be used for the installation of two chords with a spacing greater than the main column 222. The corbel beam 224 can be set as a box-shaped structure. The web plates 2244 on both sides of the corbel beam 224 are respectively provided with plug plate openings 2242 for the extension part 244 to pass through. The extension part 244 of the plug plate 240 extends out of the outer surface of the corbel beam 224 from the plug plate openings 2242. The plug plate 240 and the plug plate openings 2242 can be welded and fixed. The edge of the built-in part 242 of the plug plate 240 is close to the inner wall of the corbel beam 224, so as to realize the transmission of force between the plug plate 240 and the corbel beam 224, which helps to enhance the strength of the truss connection node. During construction, the web plate 2244 and upper and lower box plates of one side of the corbel beam 224 can be assembled first, the insert plate 240 can be installed and fixed, and then the web plate 2244 of the other side beam can be closed and the insert plate 240 can be welded and fixed to the web plate 2244 of the side beam.

[0031] The inner partitions 2246 can be respectively arranged on both sides of the plug plate 240 in the corbel beam 224. The two side edges of each inner partition 2246 are respectively fixedly connected to the inner wall of the web 2244 of the corbel beam 224. The thickness of the inner partition 2246 can be set to be equal to the larger wall thickness of the connecting beams 260 and 260' at the corresponding position. The inner partition 2246 can be used to bear the pressure from the chord rod, thereby strengthening the strength of the webs on both sides of the corbel beam 224.

[0032] The two side edges of each inner partition 2246 correspond to the two side edge positions of the connecting beams 260 and 260' located on the insert plate 240, respectively. Figure 4 In this embodiment, the upper chord of the cross frame structure is a tubular structure. The chord connected to the left side of the corbel 224 is the upper chord of the main truss, and the chord connected to the right side is the upper chord of the truss (or the upper chord of the cantilever beam or the cantilever beam, etc.). The pipe diameter of the chord connected on the left side is larger than that of the chord on the right side, and is used for different load-bearing connections. Therefore, connecting beams 260 and connecting beams 260' of corresponding pipe diameters are arranged on both sides to connect with the corresponding upper chords, and the two sides of the inner partition plate 2246 correspond to the connection points of the connecting beams 260 and 260' on both sides and the corbel 224, respectively, so as to Figure 4 In the direction of the view shown, the inner baffle 2246 is arranged obliquely, which can enhance the bearing capacity of the connection between the connecting beam 260 and the corbel beam 224. In specific implementation, the inner baffle 2246 can be arranged in other arrangements according to the size of the connected chord rods, for example, the inner baffle 2246 can be arranged parallel to each other or perpendicular to the webs 2244 on both sides of the corbel beam 224, which can achieve the purpose of enhancing the load.

[0033] A vertical stiffening plate 226 is provided inside the main column 222 to enhance the tensile, compressive and torsional properties of the connection between the main column 222 and the corbel beam 224. Figure 4 , one side edge of the vertical stiffening plate 226 corresponds to the connection between the corbel beam 224 and the outer side of the main column 222, and is fixedly connected to the inner wall of the main column 222. In this embodiment, the box-shaped corbel beams 224 are symmetrically connected to the two sides of the main column 222, and the vertical stiffening plates 226 are respectively arranged at the connection between the beam webs 2244 on both sides of the corbel beam 224 inside the main column 222 and the main column 222. The four vertical stiffening plates 226 are parallel to each other and are respectively welded and fixed to the inner side wall of the main column 222, so as to enhance the bearing capacity at the web position of the corbel beam 224. The stiffening plate 226 can be set to be equal to the thickness of the beam web 2244.

[0034] A pouring port 2221 and an air vent 2223 are provided at the end of the main column 222. During construction, concrete material can be poured through the pouring port 2221. The air vent 2223 can ensure air circulation, facilitate the discharge of gas inside the main column 222 during pouring, ensure smooth pouring, and prevent the formation of pores.

[0035] In the embodiment of the present invention, the corbel beam 224 is also provided with an end haunch 2248 ( Figure 2 , 3 ), the strength of the bottom of the connection between the corbel beam 224 and the main column 222 can be strengthened to improve the bending and shearing resistance.

[0036] refer to Figures 1 to 4 In combination with the above embodiments, the embodiment of the present invention further provides a truss structure, which includes a first upper chord 100, a second upper chord 300 and the above truss connection node 200, and the end faces of the first upper chord 100 and the second upper chord 300 are respectively fixedly connected to the end faces of the connecting beams 260 at both ends of the structural column 220 of the truss connection node 200. The truss connection node 200 is a prefabricated part, and the first upper chord 100 and the second upper chord 300 can be directly welded to the connecting beam 260 at the construction site, thereby reducing the construction difficulty and shortening the construction period, thereby reducing the project cost. The truss connection node 200 provided with the plug plate 240 has a simple structure and appearance, direct force transmission, clear and definite force transmission path, convenient construction, high node strength, can reduce the project cost, shorten the construction period, and avoid the problems of increased cost and manufacturing trouble caused by insufficient strength of the intersecting node or even using cast steel nodes.

[0037] At the truss connection nodes, lower chord connecting beams 280, 280' for connecting the truss lower chords (or cantilever beams, etc.) 400, 400' can also be set. During construction, the fractures of the lower chords and cantilever beams can be directly welded and fixed. The lower chord connecting beams 280, 280' here can be set in an intersecting welding manner. Corresponding to the connection between the lower chords 400, 400' and the main column 220, an inner partition plate 282 can also be set inside the main column 220 to enhance the connection strength at this location.

[0038] Web connecting beams 290, 290' for fixing cantilever truss webs 500, 500' can also be provided at the truss connection nodes. During construction, the webs 500 on the main truss, the cantilever truss webs 600, and the truss webs 700 can be directly connected and fixed by fracture welding. The web connecting beams 290, 290' can be provided by intersecting welding.

[0039] The embodiment of the present invention also provides a roof, which includes the above-mentioned truss structure. The above-mentioned truss connection node 200 can increase the reliability of the connection between the steel column and the truss, reduce the welding difficulty of the original scheme of intersecting welding, and improve the node strength of this node area. Through the connection beams 260 and 260' on the corbel beam reserved by this truss connection node, only the butt weld of the truss chord round tube needs to be welded on site, which greatly reduces the construction difficulty, reduces the construction time, and can better ensure the welding quality. The project cost is reduced, the construction period is shortened, and the problems of increased cost and manufacturing trouble caused by insufficient strength of the intersecting node or even using cast steel nodes are avoided.

[0040] The above are only preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. Truss connection node, characterized by: The invention comprises a structural column and a plug plate, wherein the structural column comprises a main column body and a corbel connected to the outer side of the main column body, the corbel beam is a box-shaped structure, the plug plate passes through the corbel beam, the plug plate comprises an inner portion and an outer extension portion, the inner portion is located inside the structural column, and plug plate openings are respectively provided on the webs of the beams on both sides of the corbel beam, and the outer extension portion extends out of the outer surface of the corbel beam from the plug plate openings; a connecting beam is provided on the outer extension portion, and a plug-in portion is provided on the connecting beam, the connecting beam is butted with the outer extension portion through the plug-in portion, the edge of the plug-in portion is fixedly connected to the joint of the outer extension portion, and the end of the connecting beam is fixedly connected to the outer surface of the structural column; A vertical stiffening plate is arranged inside the main column, and an edge of one side of the vertical stiffening plate corresponds to the connection between the corbel beam and the outer side of the main column, and is fixedly connected to the inner wall of the main column.

2. The truss connection node according to claim 1, characterized in that: The edge of the built-in portion is in contact with the inner wall of the structural column.

3. The truss connection node according to claim 2, characterized in that: The built-in part and the extended part are an integrated structure, and the plug plate is bent along a vertical axis on the built-in part.

4. The truss connection node according to claim 3, characterized in that: The extending portion includes a first extending portion and a second extending portion, the first extending portion and the second extending portion are respectively located on both sides of the built-in portion, the first extending portion includes a pair of side edges parallel to each other and an outer edge connecting the side edges, the side edges form a set angle α with the vertical axis, and α is an acute angle.

5. The truss connection node according to claim 1, characterized in that: Inner partitions are respectively arranged on both sides of the plug plate inside the corbel beam, and the two side edges of each inner partition are respectively fixedly connected to the inner wall of the web of the corbel beam.

6. The truss connection node according to claim 5, characterized in that: The two side edges of each inner partition plate correspond to the two side edge positions of the connecting beam located on the plug plate.

7. Truss structure, characterized by: It comprises a first upper chord, a second upper chord and the truss connection node according to any one of claims 1 to 6, and the end surfaces of the first upper chord and the second upper chord are respectively fixedly connected to the end surfaces of the connection beam.

8. Roof, characterized in that: Comprising the truss structure as claimed in claim 7.

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