Vierendeel truss structure

Abstract

The utility model provides an open-web truss structure which comprises a stand column, a welding pipe barrel is arranged in the upper end of the stand column, a connecting plate is fixedly connected to the side wall of the welding pipe barrel, the edge of the connecting plate is fixedly connected to the stand column in a welded mode, an upper chord is arranged on one side of the upper end of the stand column, and the end of the upper chord is trimmed. A second opening is formed in the side wall of the welding pipe barrel, and the welding section penetrates through the second opening. According to the truss structure, a plurality of upper chords can be welded together in a thermal agent welding mode, and the stability of overall connection of the truss structure is improved.

Description

Technical Field

[0001] This invention relates to the field of truss technology, and more particularly to a hollow truss structure. Background Technology

[0002] Truss: A structure consisting of members connected to each other at both ends by hinges. A truss is a planar or spatial structure composed of straight members, generally with triangular units. Truss members mainly bear axial tension or compression, thus making full use of the strength of the material. When the span is large, it can save material, reduce self-weight, and increase stiffness compared to solid beams.

[0003] The existing truss structures are primarily made of steel. The connections between steel components are generally fixed by bolts and nuts or welding. While bolts and nuts are not conducive to improving construction efficiency, existing welding methods mostly involve welding adjacent steel components together. For example, the ends of horizontal steel components are welded to the side walls of vertical steel components, while adjacent horizontal steel components generally do not have direct contact. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses a hollow truss structure, comprising columns, with a welded tube disposed inside the upper end of each column. A connecting plate is fixedly connected to the side wall of the welded tube, and the edge of the connecting plate is welded and fixedly connected to the column. The connecting plates are welded and fixedly connected to opposite corners of the column, and four connecting plates are provided. Furthermore, slots for welding the connecting plates are pre-drilled in the column.

[0005] A top chord is provided on one side of the upper end of the column. The end of the top chord is trimmed and a welding section is reserved. A second opening is provided on the side wall of the welded tube, and the welding section penetrates through the second opening. During construction, the column is fixed in advance, and then the top chord is installed. At this time, the welding section extends into the interior of the welded tube. When there are no less than two welding sections inside the welded tube, and the other second openings need to be sealed, the adjacent top chords are finally fixedly connected by hot-melt welding. In addition, the column and the top chord are further welded together for fixation.

[0006] Preferably, a lower chord is provided below the upper chord, and several web members are welded at equal intervals between the upper and lower chords. That is, the upper chord, web members, and lower chord form a ladder structure, and each truss layer is composed of several columns and the above-mentioned structure in both directions.

[0007] Preferably, the upper chord, web members, and lower chord are all I-beams. I-beams are common building materials.

[0008] Preferably, an end plate is fixedly connected to the end of the lower chord, and the end plate is welded and fixed to the lower side wall of the column. The welding of the end plate achieves the welding of the I-beam and the column.

[0009] Preferably, the end of the upper chord is trimmed with a cut surface. The cut surface improves the aesthetics of the upper chord and also prevents obstruction by the connecting plate, allowing the upper chord to be inserted into the upper part of the column.

[0010] Preferably, the upper end of the column is provided with a first opening, and the upper chord is mounted on the first opening.

[0011] The beneficial effects of the present invention are as follows: a welded tube is provided inside the column. When the upper chord is erected at the upper end of the column, its welded section is fitted into the welded tube. Adjacent upper chords can be fixedly connected together by hot flux welding. Compared with the traditional welding method, this connection method can achieve better connection stability of the entire truss. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0013] Figure 2 This is a three-dimensional schematic diagram of the column of the present invention;

[0014] Figure 3 This is an independent schematic diagram of the internal structure of the upper end of the column of the present invention;

[0015] Figure 4 This is a schematic diagram of the end of the upper chord of the present invention;

[0016] Figure 5 This is a schematic diagram of the end of the lower chord of the present invention.

[0017] List of reference numerals in the attached diagram:

[0018] 1. Column; 2. Top chord; 3. Web member; 4. Bottom chord; 5. First opening; 6. Connecting plate; 7. Welded tube; 8. Second opening; 9. Welded section; 10. Cross-section; 11. End plate. Detailed Implementation

[0019] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] like Figures 1 to 5As shown, a hollow truss structure includes a column 1, which is a square steel bar. A welded tube 7 is installed inside the upper end of the column 1. The lower end of the welded tube 7 is sealed. A connecting plate 6 is fixedly connected to the side wall of the welded tube 7. The edges of the connecting plates 6 are welded and fixedly connected to the column 1. Specifically, a total of four connecting plates 6 are provided, and adjacent connecting plates 6 are arranged perpendicularly. In addition, the edges of the connecting plates 6 are welded and fixed at opposite corners of the column 1. At the same time, an opening is provided at the opposite corner of the column 1 to accommodate the connecting plates 6 and facilitate welding.

[0021] An upper chord 2 is provided on one side of the upper end of the column 1. The end of the upper chord 2 is trimmed and a welding section 9 is reserved. That is, the end of the upper chord 2 is cut and a middle part is reserved. The side wall of the welded tube 7 is provided with a second opening 8, and the welding section 9 passes through the second opening 8.

[0022] During the construction and installation of the above structure, the column 1 is pre-installed and fixed. Ideally, four upper chord rods 2 are mounted on the upper end of the column 1. Then, the four upper chord rods 2 and the welded tube 7 are fixedly connected inside the welded tube 7 by hot flux welding. Of course, the two upper chord rods 2 can also be welded and fixed in the above way, but the second opening 8 should be fixed.

[0023] Below the upper chord 2, there is a lower chord 4. Several web members 3 are welded at equal intervals between the upper chord 2 and the lower chord 4. The upper chord 2, web members 3 and lower chord 4 form a ladder shape. Each truss layer is obtained by longitudinally and transversely constructing several ladder-shaped structures.

[0024] The top chord 2, web member 3, and bottom chord 4 are all I-beams. I-beams are common building materials. Furthermore, in actual construction design, the dimensions of the top chord 2, web member 3, and bottom chord 4 can be selected according to the stress requirements.

[0025] The end plate 11 is fixedly connected to the end of the lower chord 4. The end plate 11 is a rectangular plate and is fixedly connected to the lower chord 4 by welding. The end plate 11 is welded and fixed to the lower side wall of the column 1. If necessary, a through hole is opened in the end plate 11, and the through hole can become a welding area.

[0026] The end of the upper chord 2 is trimmed with a cut surface 10 to improve the aesthetics of the upper chord 2 and facilitate its assembly onto the column 1.

[0027] The upper end of the column 1 is provided with a first opening 5, and the upper chord 2 is mounted on the first opening 5.

[0028] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A hollow truss structure, characterized in that, Includes a column (1), the upper end of which is provided with a welded tube (7), and a connecting plate (6) is fixedly connected to the side wall of the welded tube (7), and the edge of the connecting plate (6) is welded and fixedly connected to the column (1). The upper end of the column (1) is provided with an upper chord (2), the end of the upper chord (2) is trimmed and a welding section (9) is reserved, the side wall of the welding tube (7) is provided with a second opening (8), and the welding section (9) passes through the second opening (8).

2. The hollow truss structure according to claim 1, characterized in that: A lower chord (4) is provided below the upper chord (2), and several web members (3) are welded at equal intervals between the upper chord (2) and the lower chord (4).

3. A hollow truss structure according to claim 2, characterized in that: The upper chord (2), web member (3) and lower chord (4) are all I-beams.

4. A hollow truss structure according to claim 2, characterized in that: The end of the lower chord (4) is fixedly connected to an end plate (11), which is welded and fixed to the lower side wall of the column (1).

5. A hollow truss structure according to claim 1, characterized in that: The end of the upper chord (2) is trimmed with a cut surface (10).

6. A hollow truss structure according to claim 1, characterized in that: The upper end of the column (1) is provided with a first opening (5), and the upper chord (2) is mounted on the first opening (5).

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