Truss girder

Abstract

The utility model relates to the field of constructional engineering, in particular to a truss girder which comprises an upper chord beam, a lower chord beam and an inter-beam supporting structure, the inter-beam supporting structure is composed of a plurality of supporting units sequentially arranged in the length direction of the lower chord beam, and each supporting unit comprises a first inclined supporting rod and a second inclined supporting rod; the upper end of the first inclined supporting rod and the upper end of the second inclined supporting rod converge to form a connecting point, the upper end of the first inclined supporting rod and the upper end of the second inclined supporting rod are connected at the connecting point in a welded mode, and the upper end of the first inclined supporting rod and the upper end of the second inclined supporting rod are both connected with the upper chord beam in a welded mode. The lower ends of the first inclined supporting rod and the second inclined supporting rod are connected with the lower chord beam in a welded mode. The truss girder solves the problems that most acting force between an upper chord beam and a lower chord beam of an existing truss girder intensively acts on a vertical supporting column, two inclined supporting rods mainly play a role in stabilizing the structure, and the effect of a bearing end is small.

Description

Technical Field

[0001] The present application relates to the field of construction engineering, and in particular to a truss main beam. Background Art

[0002] The main beam refers to a beam that directly transfers the load on it to a column or wall through the supports at both ends. The existing truss main beam is usually composed of an upper chord beam, a lower chord beam, a vertical support column connected between the upper chord beam and the lower chord beam, and two oblique support rods arranged on both sides of the vertical support column. The vertical force between the upper chord beam and the lower chord beam is mainly borne by the vertical support column, and the two oblique support rods are symmetrically arranged on both sides of the vertical support column, which mainly play the role of enhancing the stability of the vertical support column and moderately sharing the force on the vertical support column. The main beam adopts the above-mentioned structural design, which requires a vertical support column to cooperate with two oblique support rods to bear the interaction force between the upper chord beam and the lower chord beam, and most of the force is concentrated on the vertical support column. In order to meet the load-bearing requirements, the vertical support column usually needs to use steel with a larger cross-section, which is more expensive, and the two oblique support rods mainly play the role of stabilizing the structure, and the role of the load-bearing end is relatively small. Summary of the invention

[0003] In order to overcome the problem that most of the force between the upper chord and the lower chord of the existing truss main beam is concentrated on the vertical support column, the two oblique support rods mainly play a role in stabilizing the structure, and the load-bearing end has a smaller role, the present application provides a truss main beam.

[0004] The present application provides a truss main beam, which adopts the following technical solution: a truss main beam, comprising:

[0005] Upper chord beam;

[0006] A lower chord beam, located below the upper chord beam;

[0007] The inter-beam support structure is composed of a plurality of support units sequentially arranged along the length direction of the lower chord beam, the support unit includes a first diagonal brace and a second diagonal brace, the upper end of the first diagonal brace and the upper end of the second diagonal brace converge to form a connection point, and the upper end of the first diagonal brace and the upper end of the second diagonal brace are welded and connected at the connection point, the upper end of the first diagonal brace and the upper end of the second diagonal brace are both welded and connected to the upper chord beam, and the lower ends of the first diagonal brace and the second diagonal brace are respectively welded and connected to the lower chord beam;

[0008] The first diagonal brace and the second diagonal brace are respectively arranged on both sides of a vertical virtual line passing through the connection point in the vertical direction, and the angle between the first diagonal brace and the vertical virtual line is 7°-10°, and the angle between the second diagonal brace and the vertical virtual line is 30°-40°;

[0009] The upper chord beam and the lower chord beam are both in an arc-shaped structure with two ends bent downward and the middle part convex. The ratio of the curvature radius of the upper chord beam to the length of the upper chord beam is 8-10, and the ratio of the curvature radius of the lower chord beam to the length of the upper chord beam is 11-13.

[0010] By adopting the above technical solution:

[0011] Firstly, compared with the existing support mechanism which adopts a vertical support column and two oblique support rods symmetrically arranged on both sides of the vertical support column, the structural design of the inter-beam support structure of the present application has an angle of 7°-10° between the first oblique support rod and the vertical virtual line and an angle of 30°-40° between the second oblique support rod and the vertical virtual line, so that the first oblique support rod and the second oblique support rod cooperate to bear and share the force between the upper chord beam and the lower chord beam, avoiding the problem of excessive concentration of force, and at the same time can play a good role in stabilizing the structure. There is no need to set up an independent vertical support column, which simplifies the support structure between the upper chord beam and the lower chord beam, reduces the use of steel materials, and reduces costs.

[0012] Secondly, both the upper chord beam and the lower chord beam are in an arc-shaped structure with downward bending at both ends and convex in the middle. The ratio of the curvature radius of the upper chord beam to the length of the upper chord beam is 8-10, and the ratio of the curvature radius of the lower chord beam to the length of the upper chord beam is 11-13. Cooperating with the inter-beam support structure, the truss main beam structure formed has good stability, will not have the problem of excessive stress concentration, has high torsional strength, and can carry a larger load per unit weight of steel, effectively reducing the amount of steel used and saving production costs.

[0013] The ends of the upper chord beam and the lower chord beam are both provided with mounting seats, and the mounting seats include mounting plates parallel to the end faces of the upper chord beam or the lower chord beam and a plurality of first reinforcing ribs perpendicular to the end faces of the upper chord beam or the lower chord beam, the mounting plates are welded to the end faces of the upper chord beam or the lower chord beam, one edge of the first reinforcing rib is welded to the mounting plate, and the other edge of the first reinforcing rib is welded to the side face of the upper chord beam or the lower chord beam.

[0014] A plurality of first reinforcing ribs are arranged in an annular array on the periphery of the upper chord beam or the lower chord beam.

[0015] The mounting plate is provided with a plurality of first mounting holes.

[0016] The top of the upper chord beam is connected with a plurality of groups of top connection components, and the plurality of groups of top connection components are arranged equidistantly and alternately along the length direction of the upper chord beam.

[0017] The top connection assembly includes a base, an L-shaped connecting plate and a second reinforcing rib. The base is fixed to the upper chord beam, and the L-shaped connecting plate is fixed to the base. The two side edges of the second reinforcing rib are respectively welded to the upper side and the short side of the L-shaped connecting plate, and the L-shaped connecting plate is provided with a plurality of second mounting holes.

[0018] The upper chord beam is provided with first mounting wings and third reinforcing ribs on both sides, the two side edges of the third reinforcing ribs are respectively welded to the first mounting wings and the upper chord beam, and the first mounting wings are provided with a plurality of third mounting holes.

[0019] Second mounting wings are provided on both sides of the lower chord beam, and the second mounting wings are connected to a rib plate, and the two side edges of the rib plate are respectively welded to the second mounting wings and the lower chord beam, the second mounting wings are provided with a plurality of fourth mounting holes, and the rib plate is provided with a plurality of fifth mounting holes.

[0020] The rib plate is provided with a triangular mounting portion extending in a direction away from the lower chord beam, and the fifth mounting hole is opened in the triangular mounting portion.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. Compared with the existing support mechanism that adopts a vertical support column and two oblique support rods symmetrically arranged on both sides of the vertical support column, the structural design of the inter-beam support structure of the present application has an angle of 7°-10° between the first oblique support rod and the vertical virtual line and an angle of 30°-40° between the second oblique support rod and the vertical virtual line, so that the first oblique support rod and the second oblique support rod cooperate to bear and share the force between the upper chord beam and the lower chord beam, avoiding the problem of excessive concentration of force, and at the same time can play a good role in stabilizing the structure. There is no need to set up an independent vertical support column, which simplifies the support structure between the upper chord beam and the lower chord beam, reduces the use of steel materials, and reduces costs.

[0023] 2. Both the upper chord beam and the lower chord beam are in an arc-shaped structure with both ends bent downward and the middle part convex. The ratio of the curvature radius of the upper chord beam to the length of the upper chord beam is 8-10, and the ratio of the curvature radius of the lower chord beam to the length of the upper chord beam is 11-13. The truss main beam structure formed by cooperating with the inter-beam support structure has good stability, will not have the problem of excessive stress concentration, has high torsional strength, and can carry a larger load per unit weight of steel, effectively reducing the amount of steel used and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the truss main beam of this application.

[0025] Figure 2 This application Figure 1A partial enlarged view of the D area in the middle.

[0026] Figure 3 This application Figure 1 A partial enlarged view of the E area.

[0027] Figure 4 This application Figure 2 Schematic diagram of the cross-sectional structure in the AA direction.

[0028] Figure 5 This application Figure 2 Schematic diagram of the cross-sectional structure in the CC direction.

[0029] Figure 6 This application Figure 3 Schematic diagram of the cross-sectional structure in the BB direction.

[0030] Figure 7 This application Figure 1 A partial enlarged view of the F area.

[0031] Description of reference numerals:

[0032] 1. Upper chord beam; 2. Lower chord beam; 3. Support unit; 31. First diagonal brace; 32. Second diagonal brace; 33. Connection point; 34. Vertical virtual line; 4. Mounting seat; 41. Mounting plate; 42. First mounting hole; 43. First reinforcing rib; 5. Top connection assembly; 51. Base; 52. L-shaped connecting plate; 53. Second reinforcing rib; 54. Second mounting hole; 61. First mounting wing; 62. Third reinforcing rib; 63. Third mounting hole; 71. Second mounting wing; 72. Fourth mounting hole; 73. Rib plate; 74. Fifth mounting hole; 75. Triangular mounting portion. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-Figure 7 This application is described in further detail.

[0034] Reference Figure 1-Figure 7 , the embodiment of the present application discloses a truss main beam, including:

[0035] Upper chord beam 1;

[0036] A lower chord beam 2, located below the upper chord beam 1;

[0037] Reference Figure 1, inter-beam support structure, the inter-beam support structure is composed of a plurality of support units 3 arranged in sequence along the length direction of the lower chord beam 2, the support unit 3 includes a first diagonal brace 31 and a second diagonal brace 32, the upper end of the first diagonal brace 31 and the upper end of the second diagonal brace 32 converge to form a connection point 33, and the upper end of the first diagonal brace 31 and the upper end of the second diagonal brace 32 are welded and connected at the connection point 33, the upper end of the first diagonal brace 31 and the upper end of the second diagonal brace 32 are both welded and connected to the upper chord beam 1, and the lower ends of the first diagonal brace 31 and the second diagonal brace 32 are respectively welded and connected to the lower chord beam 2. Specifically, the lower ends of the first diagonal brace 31 and the second diagonal brace 32 of two adjacent groups of support units 3 are connected by welding, and thus, the first diagonal brace 31 and the second diagonal brace 32 of two adjacent groups of support units 3 can provide each other with support in the horizontal direction, thereby improving the overall structural stability of the truss main beam;

[0038] Reference Figure 1 The first diagonal brace 31 and the second diagonal brace 32 are respectively arranged on both sides of a vertical virtual line 34 passing through the connection point 33 in the vertical direction, and the angle between the first diagonal brace 31 and the vertical virtual line 34 is 7°-10°, and the angle between the second diagonal brace 32 and the vertical virtual line 34 is 30°-40°. Specifically, the design of the angle between the first diagonal brace 31 and the vertical virtual line 34 being 7°-10° enables the first diagonal brace 31 to bear most of the vertical force between the upper chord beam 1 and the lower chord beam 2, and the remaining force in the digital direction is borne by the second diagonal brace 32, and the first diagonal brace 31 and the second diagonal brace 32 can decompose part of the force into the horizontal direction, thereby avoiding the occurrence of excessive concentration of force, and at the same time can play a good role in stabilizing the structure, without the need to set up an independent vertical support column, simplifying the support structure between the upper chord beam 1 and the lower chord beam 2, reducing steel materials, and reducing costs;

[0039] Reference Figure 1 The upper chord beam 1 and the lower chord beam 2 are both in an arc-shaped structure with two ends bent downward and the middle part convex. The ratio of the curvature radius of the upper chord beam 1 to the length of the upper chord beam 1 is 8-10, and the ratio of the curvature radius of the lower chord beam 2 to the length of the upper chord beam 1 is 11-13. Specifically, the bearing force on the upper chord beam 1 and the lower chord beam 2 is generally downward. The upper chord beam 1 and the lower chord beam 2 are both in an arc-shaped structure with two ends bent downward and the middle part convex. The aforementioned arc-shaped structure design can effectively enhance the downward torsional strength of the upper chord beam 1 and the lower chord beam 2, thereby improving the unit weight bearing strength of the upper chord beam 1 and the lower chord beam 2, and reducing the amount of steel used. At the same time, the truss main beam structure formed by cooperating with the inter-beam support structure has good stability, will not have the problem of excessive stress concentration, has high torsional strength, and can carry a larger load per unit weight of steel, effectively reducing the amount of steel used and saving production costs.

[0040] Reference Figure 1 and Figure 7 The ends of the upper chord beam 1 and the lower chord beam 2 are both provided with mounting seats 4, and the mounting seats 4 include mounting plates 41 parallel to the end faces of the upper chord beam 1 or the lower chord beam 2 and a plurality of first reinforcing ribs 43 perpendicular to the end faces of the upper chord beam 1 or the lower chord beam 2, the mounting plates 41 are welded to the end faces of the upper chord beam 1 or the lower chord beam 2, one edge of the first reinforcing rib 43 is welded to the mounting plates 41, and the other edge of the first reinforcing rib 43 is welded to the side faces of the upper chord beam 1 or the lower chord beam 2. Specifically, the stress at the installation point of the truss main beam and the house column is usually more concentrated, and the setting of the mounting seat 4 facilitates the installation of the truss main beam, and the setting of the first reinforcing rib 43 can effectively enhance the overall structural strength of the mounting seat 4 and reduce the structural stability of the installation point of the truss main beam and the house column.

[0041] Reference Figure 7 A plurality of first reinforcing ribs 43 are arranged in a circular array on the periphery of the upper chord beam 1 or the lower chord beam 2. Specifically, the number of the first reinforcing ribs 43 is eight, and eight first reinforcing ribs 43 are arranged in a circular array on the periphery of the upper chord beam 1 or the lower chord beam 2, thereby effectively enhancing the structural strength and structural stability of the connection between the mounting seat 4 and the upper chord beam 1 or the lower chord beam 2, and improving the overall bearing strength of the present application.

[0042] Reference Figure 7 The mounting plate 41 is provided with a plurality of first mounting holes 42 to facilitate efficient installation of the truss main beam.

[0043] Reference Figure 2 and Figure 5 The top of the upper chord beam 1 is connected with a plurality of groups of top connection components 5, which are arranged equidistantly along the length direction of the upper chord beam 1 and are reserved for roof support and installation to facilitate the fixed installation of the roof cross bars.

[0044] The top connection assembly 5 includes a base 51, an L-shaped connection plate 52 and a second reinforcement rib 53. The base 51 is fixed to the upper chord beam 1, and the L-shaped connection plate 52 is fixed to the base 51. The two side edges of the second reinforcement rib 53 are respectively welded to the upper side and the short side of the L-shaped connection plate 52, and the L-shaped connection plate 52 is provided with a plurality of second mounting holes 54. The L-shaped connection plate 52 and the second reinforcement rib 53 can effectively enhance the overall structural strength of the top connection assembly 5, thereby improving the overall bearing performance of the truss main beam of the present application.

[0045] Reference Figure 2 and Figure 4A first mounting wing 61 and a third reinforcing rib 62 are provided on both sides of the upper chord beam 1. The two side edges of the third reinforcing rib 62 are respectively welded to the first mounting wing 61 and the upper chord beam 1, and the first mounting wing 61 is provided with a plurality of third mounting holes 63. Specifically, the first mounting wing 61 can be used for installation or support with the roof diagonal support rod to enhance the installation stability of the roof.

[0046] Reference Figure 3 and Figure 6 The lower chord beam 2 is provided with second mounting wings 71 on both sides, and the second mounting wings 71 are connected with rib plates 73, and the two side edges of the rib plates 73 are respectively welded to the second mounting wings 71 and the lower chord beam 2, the second mounting wings 71 are provided with a plurality of fourth mounting holes 72, and the rib plates 73 are provided with a plurality of fifth mounting holes 74. Specifically, the second mounting wings 71 can be used for the installation of the diagonal connecting rod, thereby providing more effective diagonal support for the roof and enhancing the installation stability of the roof.

[0047] Reference Figure 3 and Figure 6 The rib plate 73 is provided with a triangular mounting portion 75 extending in a direction away from the lower chord beam 2, and the fifth mounting hole 74 is provided in the triangular mounting portion 75. Specifically, the setting of the triangular mounting portion 75 can reserve a larger mounting position for the installation of the inclined support member of the roof.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A truss main beam, characterized in that: include: Upper chord beam (1); A lower chord beam (2) located below the upper chord beam (1); An inter-beam support structure, the inter-beam support structure is composed of a plurality of support units (3) arranged in sequence along the length direction of the lower chord beam (2), the support unit (3) comprising a first diagonal brace (31) and a second diagonal brace (32), the upper end of the first diagonal brace (31) and the upper end of the second diagonal brace (32) converge to form a connection point (33), and the upper end of the first diagonal brace (31) and the upper end of the second diagonal brace (32) are welded and connected at the connection point (33), the upper end of the first diagonal brace (31) and the upper end of the second diagonal brace (32) are both welded and connected to the upper chord beam (1), and the lower ends of the first diagonal brace (31) and the second diagonal brace (32) are respectively welded and connected to the lower chord beam (2); The first diagonal brace (31) and the second diagonal brace (32) are arranged on both sides of a vertical virtual line (34) passing through the connection point (33) in the vertical direction, and the angle between the first diagonal brace (31) and the vertical virtual line (34) is 7°-10°, and the angle between the second diagonal brace (32) and the vertical virtual line (34) is 30°-40°; The upper chord beam (1) and the lower chord beam (2) are both in an arc-shaped structure with two ends bent downward and a middle portion convex, the ratio of the radius of curvature of the upper chord beam (1) to the length of the upper chord beam (1) is 8-10, and the ratio of the radius of curvature of the lower chord beam (2) to the length of the upper chord beam (1) is 11-13.

2. The truss main beam according to claim 1, characterized in that: The ends of the upper chord beam (1) and the lower chord beam (2) are both provided with mounting seats (4), the mounting seats (4) comprising a mounting plate (41) parallel to the end surface of the upper chord beam (1) or the lower chord beam (2) and a plurality of first reinforcing ribs (43) perpendicular to the end surface of the upper chord beam (1) or the lower chord beam (2), the mounting plate (41) being welded to the end surface of the upper chord beam (1) or the lower chord beam (2), one edge of the first reinforcing rib (43) being welded to the mounting plate (41), and the other edge of the first reinforcing rib (43) being welded to the side surface of the upper chord beam (1) or the lower chord beam (2).

3. The truss main beam according to claim 2, characterized in that: A plurality of first reinforcing ribs (43) are arranged in an annular array on the periphery of the upper chord beam (1) or the lower chord beam (2).

4. The truss main beam according to claim 2, characterized in that: The mounting plate (41) is provided with a plurality of first mounting holes (42).

5. The truss main beam according to claim 1, characterized in that: The top of the upper chord beam (1) is connected to a plurality of groups of top connection components (5), and the plurality of groups of top connection components (5) are arranged at equal intervals along the length direction of the upper chord beam (1).

6. The truss main beam according to claim 5, characterized in that: The top connection assembly (5) comprises a base (51), an L-shaped connection plate (52) and a second reinforcing rib (53); the base (51) is fixed to the upper chord beam (1); the L-shaped connection plate (52) is fixed to the base (51); two side edges of the second reinforcing rib (53) are respectively welded to the upper side and the short side of the L-shaped connection plate (52); and the L-shaped connection plate (52) is provided with a plurality of second mounting holes (54).

7. The truss main beam according to claim 1 or 6, characterized in that: The upper chord beam (1) is provided with a first mounting wing (61) and a third reinforcing rib (62) on both sides, the two side edges of the third reinforcing rib (62) are respectively welded to the first mounting wing (61) and the upper chord beam (1), and the first mounting wing (61) is provided with a plurality of third mounting holes (63).

8. The truss main beam according to claim 1 or 6, characterized in that: Second mounting wings (71) are provided on both sides of the lower chord beam (2), and the second mounting wings (71) are connected to a rib plate (73), and two side edges of the rib plate (73) are respectively welded to the second mounting wings (71) and the lower chord beam (2), the second mounting wings (71) are provided with a plurality of fourth mounting holes (72), and the rib plate (73) is provided with a plurality of fifth mounting holes (74).

9. The truss main beam according to claim 8, characterized in that: The rib plate (73) is provided with a triangular mounting portion (75) extending in a direction away from the lower chord beam (2), and the fifth mounting hole (74) is provided in the triangular mounting portion (75).

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