Spherical connection node for bidirectional cross truss and construction method thereof

Abstract

The application discloses a spherical connecting node for a bidirectional intersecting truss and a construction method thereof, which comprises a first chord, supporting corbels connected to opposite sides of the first chord, an arc-shaped plate, two ends of the arc-shaped plate in an arc direction being connected to the top of the first chord, an inner arc surface of the arc-shaped plate facing the top of the first chord, opposite sides of the arc-shaped plate in a width direction extending downward to form arc-shaped flanges, the arc-shaped flanges being connected to an end surface of the supporting corbels away from the first chord, a support installed on the top of the first chord and the supporting corbels and supported on the inner arc surface of the arc-shaped plate and the arc-shaped flanges, a plurality of first web members connected to the outer arc surface of the arc-shaped plate, a second chord coaxially arranged with the supporting corbels, the second chord being connected to the arc-shaped flanges, and a plurality of second web members connected to the outer arc surface of the arc-shaped flanges. The application solves the problems of low safety degree or complicated processing of the existing intersecting node of a plane truss.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a spherical connection node for a two-way cross truss and its construction method. Background Technology

[0002] H-section planar truss structures are a common structural system in large-span steel structures. In H-section planar truss structures with diagonal web members at perpendicular intersections, there are numerous members. One common connection method is as follows: the main truss and secondary trusses are connected by connecting plates. These connecting plates are generally quite thick. Considering factors such as the regular shape of the connecting plates during fabrication and the welding of thin plates onto thick plates, the connecting plates typically break the chord members. When connecting the connecting plates to the secondary trusses, if the internal forces of the secondary truss members are small, bolts can be used to connect them to the secondary truss chords or diagonal web members. If the internal forces of the secondary truss members are large, welding can be used to connect them to the secondary truss chords or web members. A connecting plate is placed on the connecting plate at a position corresponding to the flange of the H-section to transfer the force from the flange to the connecting plate. Generally, the internal forces of the main truss chords are large. Using a connection plate connection method, which breaks the main truss chords, will reduce the safety of the main chords. A second common construction method for connecting primary and secondary trusses involves welding the secondary truss flange to the primary truss flange using a folded plate, then installing a connecting plate on top, and finally welding the secondary truss diagonal web members to the connecting plate. However, due to the diverse cross-sectional types of the secondary truss and truss chord members, especially in roof trusses with a certain slope, the bending angles of the folded plates connecting the secondary truss flange and the primary truss flange vary greatly, leading to complex and difficult fabrication. Therefore, the above-mentioned construction methods all have shortcomings, necessitating improvements to the construction methods for connecting nodes of intersecting planar trusses. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a spherical connection node for bidirectional intersecting trusses and its construction method are provided to solve the problems of low safety or cumbersome processing of existing planar truss intersection nodes.

[0004] To achieve the above objectives, a spherical connection node for a two-way intersecting truss is provided, comprising:

[0005] The first chord of the first truss;

[0006] Support brackets are provided on opposite sides of the first chord.

[0007] An arc-shaped plate, wherein the two ends of the arc-shaped plate are respectively connected to the top of the first chord, the inner arc surface of the arc-shaped plate is set facing the top of the first chord, and the opposite sides of the arc-shaped plate in the width direction extend downward to form arc-shaped flanges, and the arc-shaped flanges are connected to the end face of the supporting bracket away from the first chord.

[0008] The bracket is installed on top of the first chord and the supporting bracket and is supported on the inner arc surface of the arc plate and the arc flange;

[0009] The first web members of the first truss are respectively connected to the outer arc surface of the arc-shaped plate;

[0010] The second chord of the second truss is coaxially arranged with the supporting bracket, and the second chord is connected to the arc-shaped flange;

[0011] The second truss has multiple second web members, which are respectively connected to the outer arc surface of the arc-shaped flange.

[0012] Furthermore, the dimensions of the cross-section of the supporting bracket are adapted to the dimensions of the cross-section of the first chord.

[0013] Furthermore, the first chord, the first web member, the supporting bracket, the second chord, and the second web member are all H-beams.

[0014] Furthermore, a first force transmission plate is connected between the upper and lower flanges of the first chord, and the first force transmission plate is located below the end of the arc-shaped plate.

[0015] Furthermore, the bracket includes two support plates arranged in a cross shape. The support plates are erected on the top of the first chord and supported on the inner arc surface of the arc plate. The two ends of one support plate extend to the top of the support bracket and are supported on the inner arc surface of the arc flange.

[0016] Furthermore, the support plate is centrally located in the middle of the arc-shaped plate, and second force transmission plates are formed at opposite ends of the support plate. The second force transmission plates are supported on the arc-shaped plate or the arc-shaped flange, and are located below the first web member or the second web member.

[0017] This invention provides a construction method for a spherical connection node for a two-way cross truss, comprising the following steps:

[0018] Support brackets are connected to the opposite sides of the first chord.

[0019] A bracket is installed on the top of the first chord and the supporting bracket;

[0020] An arc-shaped plate is installed on the bracket, and the two ends of the arc-shaped plate in the arc direction are respectively connected to the top of the first chord. The arc-shaped flanges on the opposite sides of the arc-shaped plate are connected to the end face of the supporting bracket away from the first chord, so that the inner arc surface of the arc-shaped plate faces the top of the first chord.

[0021] Multiple first web members of the first truss are connected to the outer arc surface of the arc-shaped plate;

[0022] The second chord of the second truss is connected to the arc-shaped flange, such that the second chord is coaxial with the supporting bracket;

[0023] The second web members of the second truss are respectively connected to the outer arc surface of the arc-shaped flange.

[0024] The beneficial effects of this invention are as follows: In the spherical connection node for a two-way cross truss, a supporting bracket extends from the first chord of the node, corresponding to the second chord of the second truss. An arc-shaped plate is installed on the first chord of the first truss and the supporting bracket. The arc-shaped flange of the arc-shaped plate is curved into a spherical shape, and the arc-shaped plate intersects the arc-shaped flange in a cross shape. The arc-shaped plate is then welded to the first web members (vertical and diagonal web members) of the first truss, and even the second chord of the second truss. The first chord of the first truss is not broken, thus maintaining the structural load-bearing capacity and safety. Furthermore, the use of an arc-shaped plate connection, with a spherical arc-shaped flange, results in a simple construction, easily standardized specifications, convenient and quick processing, and promotes the widespread application of H-section planar truss structural systems. Attached Figure Description

[0025] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 This is a structural schematic diagram of a spherical connection node for a bidirectional cross truss according to an embodiment of the present invention.

[0027] Figures 2 to 4 This is a schematic diagram illustrating the construction steps of a spherical connection node for a bidirectional cross truss according to an embodiment of the present invention. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Reference Figures 1 to 4 As shown, the present invention provides a spherical connection node for a two-way cross truss, comprising: a first chord 11, a first web member 12, a second chord 21, a second web member 22, a supporting bracket 31, and an arc plate 4.

[0031] In this embodiment, the first chord 11, the first web member 12, the supporting bracket 31, the second chord 21, and the second web member 22 are all H-beams.

[0032] The first chord 11 of the first truss is arranged along a first direction. Support brackets 31 are respectively connected to opposite sides of the first chord 11. The cross-sectional dimensions of the support brackets 31 are adapted to the cross-sectional dimensions of the first chord 11.

[0033] In this embodiment, the specifications and dimensions of the supporting bracket are adapted to the specifications and dimensions of the first chord, such as the plate thickness and outer diameter of the supporting bracket.

[0034] The arc-shaped plate 4 is arc-shaped. The inner arc surface of the arc-shaped plate 4 faces the top of the first chord 11. Both ends of the arc-shaped plate 4 in the arc direction are connected to the top of the first chord 11. The inner arc surface of the arc-shaped plate faces the upper flange of the first chord. Both ends of the arc-shaped plate are welded to the upper flange of the first chord. The opposite sides of the arc-shaped plate 4 in the width direction extend downward to form arc-shaped flanges 41. The arc-shaped flanges 41 are connected to the end face of the supporting bracket 31 away from the first chord 11.

[0035] In this embodiment, one end of the arc-shaped flange completely covers one end face of the supporting bracket.

[0036] The bracket 5 is installed on top of the first chord 11 and the supporting bracket 31. The bracket 5 is supported on the inner arc surface of the arc plate 4 and the arc flange 41.

[0037] The first web members 12 of the first truss are respectively connected to the outer arc surface of the arc plate 4.

[0038] The second chord 21 of the second truss is coaxially arranged with the supporting bracket 31. The second chord 21 is connected to the curved flange 41.

[0039] In this embodiment, the dimensions of the second chord are smaller than those of the supporting bracket. The outer diameter of the second chord is smaller than that of the supporting bracket. The upper flange of the second chord is coplanar with the upper flange of the supporting bracket. The upper and lower flanges of the supporting bracket are coplanar with the upper and lower flanges of the first chord, respectively.

[0040] The second web members 22 of the second truss are respectively connected to the outer arc surface of the arc flange 41.

[0041] The first web member is set perpendicular to the outer arc surface of the arc-shaped plate, and the second web member is set perpendicular to the outer arc surface of the arc-shaped flange.

[0042] In a preferred embodiment, a first force transmission plate a is connected between the upper and lower flanges of the first chord 11. The first force transmission plate a is located below the end of the arc-shaped plate 4.

[0043] In a preferred embodiment, the bracket 5 includes two support plates 51. The two support plates 51 are arranged in a cross shape. The support plates 51 are erected on the top of the first chord 11. The support plates 51 are supported on the inner arc surface of the arc-shaped plate 4. Both ends of one support plate 51 extend to the top of the support bracket 31. The support plate 51 is supported on the inner arc surface of the arc-shaped flange 41.

[0044] The support plate 51 is centrally located in the middle of the arc-shaped plate 4. The width of the arc-shaped plate is adapted to the width of the upper and lower flanges of the first chord. The support plate is centrally located in the middle of the upper and lower flanges of the first chord. The support plate is positioned along the length direction of the first chord. Another support plate is positioned along the width direction of the first chord, i.e., along the length direction of the second chord.

[0045] In this embodiment, second force transmission plates 52 are formed at opposite ends of the support plate 51. The second force transmission plates 52 are supported on the arc-shaped plate 4 or the arc-shaped flange 41. The second force transmission plates 52 are disposed below the first web member 12 or the second web member 22.

[0046] This invention provides a construction method for a spherical connection node for a two-way cross truss, comprising the following steps:

[0047] S1, support brackets 31 are connected to the opposite sides of the first chord 11 respectively.

[0048] S2. Install bracket 5 on the top of the first chord 11 and the supporting bracket 31.

[0049] S3. Install the arc plate 4 on the bracket 5, and connect the two ends of the arc plate 4 in the arc direction to the top of the first chord 11 respectively. Connect the arc flanges 41 on the opposite sides of the arc plate 4 to the end face of the support bracket 31 away from the first chord 11, so that the inner arc surface of the arc plate 4 faces the top of the first chord 11.

[0050] S4, multiple first web members 12 of the first truss are connected to the outer arc surface of the arc plate 4.

[0051] S5. Connect the second chord 21 of the second truss to the arc-shaped flange 41, so that the second chord 21 and the supporting bracket 31 are coaxially arranged.

[0052] S6. Connect the multiple second web members 22 of the second truss to the outer arc surface of the arc flange 41 respectively.

[0053] The spherical connection node for a two-way cross truss of the present invention features a supporting bracket extending from the first chord of the node, corresponding to the second chord of the second truss. An arc-shaped plate is mounted on the first chord of the first truss and the supporting bracket. The arc-shaped flange of the plate is curved into a spherical shape, and the arc-shaped plate intersects the arc-shaped flange in a cross shape. The arc-shaped plate is then welded to the first web members (vertical and diagonal web members) of the first truss, and even to the second chord of the second truss. The first chord of the first truss is not broken, thus maintaining the structural load-bearing capacity and safety. Furthermore, the use of an arc-shaped plate connection, with its spherical arc-shaped flange, results in a simple construction, easily standardized specifications, convenient and quick processing, and promotes the widespread application of H-section planar truss structural systems.

[0054] The spherical connection node for bidirectional cross trusses of the present invention has a simple structure, easy-to-classify specifications, reduces the types, is easy to process and manufacture, and has wide applicability. It is applicable to trusses where the members are not coplanar or intersecting trusses have included angles.

[0055] The spherical connection node for a bidirectional cross truss of the present invention welds the second chord and the second web member of the second truss to the arcuate flange. The internal forces of the web plates of the first and second web members are transmitted through the support plate, and the internal forces of the flanges of the first and second web members are supported by the arched shell force of the arcuate plate and the arcuate flange. A second force transmission plate is added locally on the inner arc surface of the arcuate plate and the arcuate flange at the position corresponding to the flange of the first and second web members to enhance the out-of-plane stability of the arcuate plate and the arcuate flange.

[0056] The curved plate is made by pressing a steel plate into a spherical shape using a mold, and then welding it to the support. The curved flange is also made by pressing a steel plate into a spherical shape using a mold, and then welding it to the support. The curved plate and the curved flange have the same thickness as the upper and lower flanges of the first chord, respectively.

[0057] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A spherical connection node for a bidirectional cross truss, characterized in that, include: The first chord of the first truss; Support brackets are provided on opposite sides of the first chord. An arc-shaped plate, wherein the two ends of the arc-shaped plate are respectively connected to the top of the first chord, the inner arc surface of the arc-shaped plate is set facing the top of the first chord, and the opposite sides of the arc-shaped plate in the width direction extend downward to form arc-shaped flanges, and the arc-shaped flanges are connected to the end face of the supporting bracket away from the first chord. The bracket is installed on top of the first chord and the supporting bracket and is supported on the inner arc surface of the arc plate and the arc flange; The first web members of the first truss are respectively connected to the outer arc surface of the arc-shaped plate; The second chord of the second truss is coaxially arranged with the supporting bracket, and the second chord is connected to the arc-shaped flange; The second truss has multiple second web members, which are respectively connected to the outer arc surface of the arc-shaped flange; The bracket includes two support plates arranged in a cross shape. The support plates are erected on the top of the first chord and supported on the inner arc surface of the arc plate. The two ends of one support plate extend to the top of the support bracket and are supported on the inner arc surface of the arc flange. The support plate is centrally located in the middle of the arc-shaped plate, and second force transmission plates are formed at opposite ends of the support plate. The second force transmission plates are supported on the arc-shaped plate or the arc-shaped flange, and are located below the first web member or the second web member.

2. The spherical connection node for a bidirectional cross truss according to claim 1, characterized in that, The dimensions of the cross-section of the supporting bracket are adapted to the dimensions of the cross-section of the first chord.

3. The spherical connection node for a bidirectional cross truss according to claim 1, characterized in that, The first chord, the first web member, the supporting bracket, the second chord, and the second web member are all H-beams.

4. The spherical connection node for a bidirectional cross truss according to claim 3, characterized in that, A first force transmission plate is connected between the upper and lower flanges of the first chord, and the first force transmission plate is located below the end of the arc-shaped plate.

5. A construction method for a spherical connection node for a bidirectional cross truss as described in any one of claims 1 to 4, characterized in that, Includes the following steps: Support brackets are connected to the opposite sides of the first chord. A bracket is installed on the top of the first chord and the supporting bracket; An arc-shaped plate is installed on the bracket, and the two ends of the arc-shaped plate in the arc direction are respectively connected to the top of the first chord. The arc-shaped flanges on the opposite sides of the arc-shaped plate are connected to the end face of the supporting bracket away from the first chord, so that the inner arc surface of the arc-shaped plate faces the top of the first chord. Multiple first web members of the first truss are connected to the outer arc surface of the arc-shaped plate; The second chord of the second truss is connected to the arc-shaped flange, such that the second chord is coaxial with the supporting bracket; The second web members of the second truss are respectively connected to the outer arc surface of the arc-shaped flange.

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