A self-supporting horizontal wind-resistant truss

Abstract

This utility model discloses a self-supporting horizontal wind-resistant truss, comprising: an upper chord, which is arranged horizontally and is not connected to the main structural columns; and a lower chord, which is arranged below the upper chord and includes an outer lower chord and an inner lower chord, which are symmetrically arranged on both sides of the central axis of the upper chord on the same horizontal plane and connected by web members. The two ends of the outer lower chord are hinged to the main structural columns on both sides. A half-circular tube sliding groove structure is provided on the main structural beam, and the inner lower chord is arranged in the half-circular tube sliding groove structure and can slide freely along the half-circular tube sliding groove structure when under stress. The wind-resistant truss of this utility model forms a simply supported truss in the horizontal plane, eliminating the influence of the support bending moment on the supporting columns at both ends. The vertical load of the truss is only its own weight, effectively reducing the truss height and reducing the cross-section of the upper chord and some web members.

Description

Technical Field

[0001] This utility model relates to the field of wind-resistant truss technology, specifically to a self-supporting horizontal wind-resistant truss. Background Technology

[0002] In large factory buildings with significant spans and floor heights, the exterior facade can be reinforced by adding horizontal wind-resistant trusses to reduce the span of wind-resistant columns and decrease the amount of steel used in the maintenance structure. Currently, wind-resistant trusses typically employ three- or four-limb space trusses. Because they simultaneously bear horizontal wind loads and vertical wall loads, these trusses require sufficient stiffness and load-bearing capacity in both the horizontal and vertical directions. Furthermore, the lower chords of these trusses are connected to the main structure, forming rigidly connected trusses at both ends on the horizontal plane. The support moments generated by these rigid connections can adversely affect the vertical members of the main structure. Replacing the horizontal truss with hinged connections to the vertical members, while ensuring it bears only horizontal wind loads and not vertical wall loads, optimizes the force transmission path and reduces the vertical dimensions of the wind-resistant truss. Utility Model Content

[0003] The purpose of this invention is to provide a self-supporting horizontal wind-resistant truss to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides a self-supporting horizontal wind-resistant truss, comprising: an upper chord, which is arranged horizontally and is not connected to the main structural columns; a lower chord, which is arranged below the upper chord and includes an outer lower chord and an inner lower chord, which are symmetrically arranged on both sides of the central axis of the upper chord on the same horizontal plane, and are connected by web members, with the two ends of the outer lower chord hinged to the main structural columns on both sides; and a main structural beam, on which a half-circular tube sliding groove structure is provided, with the inner lower chord arranged within the half-circular tube sliding groove structure, allowing the inner lower chord to slide freely along the half-circular tube sliding groove structure when under stress.

[0005] In a preferred embodiment, the upper chord, the outer lower chord, and the inner lower chord are all made of round steel pipes, and the length of the lower chord is greater than the length of the upper chord, so that the upper and lower chords form a trapezoidal truss structure on the elevation.

[0006] In a preferred embodiment, a pair of vertical ribs are provided on the main structural beam. A lower semi-circular tube groove a is fixed above the vertical ribs. The inner chord of the lower chord is placed in the lower semi-circular tube groove a. The upper semi-circular tube groove b is fastened to the inner chord of the lower chord and is opposite to and fixedly connected to the opening of the lower semi-circular tube groove a. The end of the inner chord of the lower chord extends to the outside of the half-circular tube groove structure.

[0007] In a preferred embodiment, the web members include vertical web members and horizontal web members. Multiple horizontal web members are arranged horizontally between the outer chord and the inner chord of the lower chord and are fixedly connected to the outer chord and the inner chord of the lower chord, respectively. Multiple vertical web members are fixed between the upper chord and the outer chord of the lower chord, and between the upper chord and the inner chord of the lower chord.

[0008] In a preferred embodiment, the distance by which the end of the inner lower chord extends beyond the outer side of the half-tube slide structure is greater than the displacement of the end of the inner lower chord under wind load, and a limit sealing plate is provided at the end of the inner lower chord.

[0009] In a preferred embodiment, multiple wind-resistant columns 7 are spaced apart on the outer side of the lower chord outer chord 2.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The wind-resistant truss of this invention is a three-limb spatial truss. The outer and inner lower chords and horizontal web members form the main horizontal load-bearing truss. The upper chord, outer and inner lower chords, and vertical web members form the stabilizing truss, bearing the truss's self-weight and providing necessary vertical stiffness. The wind-resistant truss forms a simply supported truss in the horizontal plane. The horizontal plane of the truss serves as the main load-bearing surface and is hinged to the vertical members at both ends. The main structure only bears the concentrated force transmitted from the truss. The truss does not bear wall loads, eliminating the influence of support bending moments on the end support columns. The vertical load of the truss is only its own weight, effectively reducing the truss height and decreasing the cross-section of the upper chord and some web members. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the elevation structure of the self-supporting horizontal wind-resistant truss of this utility model;

[0013] Figure 2 for Figure 1 Cross-sectional view along the AA direction;

[0014] Figure 3 for Figure 1 Cross-sectional view along the BB direction;

[0015] Figure 4 A schematic diagram of a half-circular tube slide groove structure set on the main structural beam of this utility model;

[0016] Figure 5 for Figure 4 Cross-sectional view along the CC direction;

[0017] Figure 6 This is an exploded view of the half-circular tube chute structure of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Top chord; 2. Lower chord outer chord; 3. Lower chord inner chord; 4. Vertical web member; 5. Horizontal web member; 6. Main structural beam; 7. Wind-resistant column; 8. Vertical rib; 9a. Lower semi-circular tube groove; 9b. Upper semi-circular tube groove; 10. Main structural column; 11. Limiting plate. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] like Figures 1 to 6 As shown, the self-supporting horizontal wind-resistant truss of the preferred embodiment of this utility model includes: an upper chord 1, a lower chord, a half-shaped circular tube sliding groove structure, and wind-resistant columns 7. The upper chord 1 is arranged in the horizontal direction and is not connected to the main structural columns 10. The lower chord is arranged below the upper chord 1 and includes an outer lower chord 2 and an inner lower chord 3. The outer lower chord 2 and the inner lower chord 3 are symmetrically arranged on both sides of the central axis of the upper chord 1 on the same horizontal plane, and the upper chord 1 and the lower chord are connected by web members. The two ends of the outer lower chord 2 are hinged to the main structural columns 10 on both sides. The main structural beam 6 is equipped with a half-circular tube sliding groove structure. The inner chord 3 of the lower chord is set in the half-circular tube sliding groove structure, and the inner chord 3 of the lower chord can slide freely along the half-circular tube sliding groove structure when under force, thereby releasing the degree of freedom and making the wind-resistant truss form a simply supported truss in the horizontal plane.

[0022] Furthermore, a pair of vertical ribs 8 are provided on the main structural beam 6. A lower semi-circular tube groove 9a is fixed above the vertical ribs 8. The inner chord of the lower chord 3 is placed in the lower semi-circular tube groove 9a. The upper semi-circular tube groove 9b is fastened to the inner chord of the lower chord 3 and is opposite to and fixedly connected to the opening of the lower semi-circular tube groove 9a. The end of the inner chord of the lower chord 3 extends to the outside of the half-circular tube groove structure.

[0023] Furthermore, the upper chord, the outer lower chord, and the inner lower chord are all made of round steel pipes. The length of the lower chord is greater than the length of the upper chord 1, so that the upper chord 1 and the lower chord form a trapezoidal truss structure on the elevation.

[0024] Furthermore, the web members include vertical web members 4 and horizontal web members 5. Multiple horizontal web members 5 are arranged horizontally between the outer lower chord 2 and the inner lower chord 3, and are fixedly connected to the outer lower chord 2 and the inner lower chord 3, respectively. Multiple vertical web members 4 are fixed between the upper chord 1 and the outer lower chord 2, and between the upper chord 1 and the inner lower chord 3. The upper chord, the outer lower chord 2 and the inner lower chord 3, the vertical web members 4 and the horizontal web members 5 form a three-limb spatial truss. The upper chord 1, web members, outer lower chord 2 and inner lower chord 3 together form a vertically stable structure, bearing the truss's self-weight and providing the necessary vertical stiffness.

[0025] Furthermore, multiple vertically arranged wind-resistant columns 7 are provided at intervals on the outer side of the lower chord outer chord 2, and the wind-resistant columns 7 are fixedly connected to the lower chord outer chord 2.

[0026] During installation, the inner lower chord member 3 is placed in the lower semi-circular tube groove 9a pre-installed on the main structure beam 6. After the wind-resistant truss is installed, the upper semi-circular tube groove 9b is fastened onto the inner lower chord member 3 and spot-welded to the lower semi-circular tube groove 9a to ensure that the inner lower chord member 3 can slide freely along the cavity between the lower semi-circular tube groove 9a and the upper semi-circular tube groove 9b when under load. The distance by which the end of the inner lower chord member 3 extends beyond the outer side of the semi-circular tube groove structure is greater than the displacement of the end of the inner lower chord member 3 under wind load. In addition, a limit sealing plate 11 is provided at the end of the inner lower chord member 3 to prevent the wind-resistant truss from falling off.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-supporting horizontal wind-resistant truss, characterized in that: include: The upper chord (1) is arranged in a horizontal direction and is not connected to the main structural column (10); The lower chord is located below the upper chord (1). The lower chord includes an outer lower chord (2) and an inner lower chord (3). The outer lower chord (2) and the inner lower chord (3) are symmetrically arranged on both sides of the central axis of the upper chord (1) on the same horizontal plane. The upper chord (1) and the lower chord are connected by a web member. The two ends of the outer lower chord (2) are hinged to the main structural columns (10) on both sides. The half-type circular tube slide structure is provided on the main structure beam (6). The inner chord of the lower chord (3) is set in the half-type circular tube slide structure, and the inner chord of the lower chord (3) can slide freely along the half-type circular tube slide structure when under force.

2. The self-supporting horizontal wind-resistant truss according to claim 1, characterized in that: The upper chord, the outer lower chord (2), and the inner lower chord (3) are all made of round steel pipes. The length of the lower chord is greater than the length of the upper chord (1), so that the upper chord (1) and the lower chord form a trapezoidal truss structure on the elevation.

3. The self-supporting horizontal wind-resistant truss according to claim 2, characterized in that: A pair of vertical ribs (8) are provided on the main structural beam (6). A lower semi-circular tube groove (9a) is fixed above the vertical ribs (8). The inner chord of the lower chord (3) is placed in the lower semi-circular tube groove (9a). The upper semi-circular tube groove (9b) is fastened on the inner chord of the lower chord (3) and is opposite to and fixedly connected to the opening of the lower semi-circular tube groove (9a). The end of the inner chord of the lower chord (3) extends to the outside of the half-circular tube groove structure.

4. The self-supporting horizontal wind-resistant truss according to claim 3, characterized in that: The web members include vertical web members (4) and horizontal web members (5). Multiple horizontal web members (5) are arranged horizontally between the outer chord (2) and the inner chord (3) of the lower chord, and are fixedly connected to the outer chord (2) and the inner chord (3) of the lower chord, respectively. Multiple vertical web members (4) are fixed between the upper chord (1) and the outer chord (2) of the lower chord, and between the upper chord (1) and the inner chord (3) of the lower chord, respectively.

5. The self-supporting horizontal wind-resistant truss according to claim 4, characterized in that: The distance by which the end of the inner chord of the lower chord (3) extends outward from the outside of the half-shaped circular tube slide structure is greater than the displacement of the end of the inner chord of the lower chord (3) under wind load, and a limit sealing plate (11) is provided at the end of the inner chord of the lower chord (3).

6. The self-supporting horizontal wind-resistant truss according to claim 5, characterized in that: Multiple wind-resistant columns (7) are spaced apart on the outer side of the lower chord outer chord (2).

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