Steel truss structure based on double-spliced C-shaped steel

Abstract

The steel truss structure comprises a truss body and a plurality of supporting columns, the truss body comprises an upper chord member, a lower chord member and a plurality of web members, the web members comprise straight web members and diagonal web members, and the upper chord member and the lower chord member are each formed by double splicing of two pieces of C-shaped steel back to back; the upper end of the supporting column is clamped between the two C-shaped steels forming the upper chord member, the lower end of the supporting column downwards penetrates out of the position between the two C-shaped steels forming the lower chord member, and the front side face and the rear side face of the supporting column are fixedly connected with the backs of the adjacent C-shaped steels forming the upper chord member and the lower chord member through bolts respectively. According to the utility model, the installation work can be simplified, full bolt connection can be realized, the steel consumption of the steel truss can be effectively reduced, the manufacturing cost of the steel truss can be obviously reduced, the light weight of the steel truss can be realized, and particularly, factory-like prefabrication production and disassembly and reutilization can be realized; and the machining and assembling efficiency and the recycling value of the steel truss can be obviously improved.

Description

Technical Field

[0001] This utility model relates to a steel truss structure based on double-section C-shaped steel, belonging to the field of steel truss structure design technology. Background Technology

[0002] Steel trusses are trusses made of steel and are now widely used in steel roof truss systems. Existing steel truss structures include... Figure 1 As shown, the truss body 1 includes a truss body 1 and support columns 2 for supporting the truss body 1. The truss body 1 typically includes an upper chord 1-1, a lower chord 1-2, and web members 1-3 connecting the upper chord 1-1 and the lower chord 1-2. The web members 1-3 include vertically arranged straight web members 1-3a and diagonally arranged oblique web members 1-3b. The support columns 2 are typically vertically arranged in the middle and at both ends of the truss body 1 and are connected to both the upper chord 1-1 and the lower chord 1-2 constituting the truss body 1.

[0003] In steel roof truss systems, the upper and lower chords of the steel truss structure are typically constructed using double C-shaped steel sections, each consisting of two back-to-back C-shaped steel sections. However, in existing technologies, please refer to [link to previous text]. Figure 2 As shown, to achieve a fixed connection between the support column 2 and the upper chord 1-1 and lower chord 1-2, which are composed of double-section C-shaped steel, a connecting plate A3 is typically welded to one or both sides of the support column 2. The connecting plate A3 is then sandwiched between the backs of the two C-shaped steel sections constituting the upper chord 1-1 and lower chord 1-2, and finally fixed with bolts 4. Alternatively, in the prior art, to achieve a fixed connection between the straight web members 1-3a and diagonal web members 1-3b and the upper chord 1-1 and lower chord 1-2, a fixed connecting plate B5 needs to be sandwiched between the two C-shaped steel sections constituting the upper chord 1-1 and lower chord 1-2. Both the straight web members 1-3a and diagonal web members 1-3b must be composed of double-section C-shaped steel. This is achieved by simultaneously sandwiching the fixed connecting plate B5 between the double-section C-shaped steel sections constituting the straight web members 1-3a and diagonal web members 1-3b. 5. This indirectly achieves a fixed connection between the straight web members 1-3a and slanted web members 1-3b and the upper chord member 1-1 and the lower chord member 1-2.

[0004] Clearly, the existing steel truss structure based on double-section C-shaped steel requires a large number of connecting plates A3 and B5, which not only has many problems such as high steel consumption, high cost, heavy weight, and complex assembly operation, but also unreliable connection strength, increased complexity of prefabrication and reduced on-site assembly efficiency. In particular, multiple parts need to be welded for fixation, which not only has high welding cost, but is also inconvenient to disassemble after the service life, resulting in low reuse value. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, the purpose of this utility model is to provide a steel truss structure based on double-section C-shaped steel that can significantly reduce steel consumption, facilitate on-site installation, enable fully prefabricated processing in the factory, facilitate transportation, facilitate disassembly and reuse, ensure reliable connection strength, and achieve high economic efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A steel truss structure based on double-section C-shaped steel includes a truss body and several supporting columns. The truss body includes an upper chord, a lower chord, and several web members. The web members include straight web members and diagonal web members, and both the upper chord and the lower chord are composed of two C-shaped steel sections back-to-back. The supporting column is characterized in that its upper end is sandwiched between the two C-shaped steel sections forming the upper chord, and its lower end extends downward through the two C-shaped steel sections forming the lower chord. The front and rear sides of the supporting column are respectively fixedly connected to the backs of the adjacent C-shaped steel sections forming the upper and lower chords by bolts.

[0008] In one embodiment, the upper ends of the straight web member and the diagonal web member are clamped between two C-shaped steels forming the upper chord, and the lower ends of the straight web member and the diagonal web member are clamped between two C-shaped steels forming the lower chord. The front and rear sides of the straight web member and the diagonal web member are respectively fixedly connected to the back of the adjacent C-shaped steels forming the upper and lower chords by bolts.

[0009] In a preferred embodiment, the straight web members and the diagonal web members are each independently selected from rectangular steel or C-shaped steel.

[0010] In a preferred embodiment, the support column is made of rectangular steel, H-beam steel, or I-beam steel.

[0011] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0012] The steel truss structure based on double-section C-shaped steel provided by this utility model allows for direct connection between the supporting columns and web members and the upper and lower chords. Through ingenious structural design, it eliminates the numerous connecting plates found in existing technologies, simplifying on-site assembly, enabling all-bolted connections, and effectively reducing steel consumption (preliminary estimate of saving 1-2 kg of steel per square meter). This significantly reduces costs, achieves lightweight steel trusses, and facilitates factory prefabrication, transportation, disassembly, and reuse, thereby significantly improving the processing and assembly efficiency and reuse value of steel trusses. Therefore, compared to existing technologies, this utility model possesses strong practicality and significant economic value. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of a steel truss;

[0014] Figure 2 This is a schematic diagram of an existing steel truss structure based on double-section C-shaped steel.

[0015] Figure 3 This is a schematic diagram of a steel truss structure based on double-section C-shaped steel provided by an embodiment of the present invention;

[0016] The labels in the diagram are as follows: 1. Truss body; 1-1. Top chord; 1-2. Bottom chord; 1-3. Web member; 1-3a. Straight web member; 1-3b. Diagonal web member; 2. Support column; 3. Connecting plate A; 4. Bolt; 5. Connecting plate B. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Furthermore, it should be noted that the terminology used in this utility model is for the purpose of describing specific embodiments only and is not intended to limit the utility model. Unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by those skilled in the art. The terms "inner," "outer," "upper," "lower," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Example

[0019] Please see Figure 1 and Figure 3 As shown, this utility model provides a steel truss structure based on double-section C-shaped steel, including a truss body 1 and several support columns 2. The truss body 1 includes an upper chord 1-1, a lower chord 1-2, and several web members 1-3. The web members 1-3 include straight web members 1-3a and diagonal web members 1-3b. The upper chord 1-1 and the lower chord 1-2 are both composed of two C-shaped steel sections back-to-back. The upper end of the support column 2 is sandwiched between the two C-shaped steel sections constituting the upper chord 1-1, and the lower end of the support column 2 extends downward through the two C-shaped steel sections constituting the lower chord 1-2. The front and rear sides of the support column 2 are respectively fixedly connected to the back of the adjacent C-shaped steel sections constituting the upper and lower chords by bolts.

[0020] Additionally, please see Figure 3As shown, in this embodiment, the upper ends of the straight web member 1-3a and the oblique web member 1-3b are both sandwiched between the two C-shaped steels that constitute the upper chord member 1-1, and the lower ends of the straight web member 1-3a and the oblique web member 1-3b are both sandwiched between the two C-shaped steels that constitute the lower chord member 1-2. Furthermore, the front and rear sides of the straight web member 1-3a and the oblique web member 1-3b are respectively fixedly connected to the back of the adjacent C-shaped steels that constitute the upper and lower chord members by bolts.

[0021] In this embodiment, the straight web members 1-3a and the diagonal web members 1-3b are respectively selected from rectangular steel or C-shaped steel.

[0022] In this embodiment, the support column 2 can be made of rectangular steel, such as... Figure 3 As shown, H-beams or I-beams can also be used, as long as the two connecting surfaces of the H-beams or I-beams are placed in a front-to-back direction.

[0023] As can be seen from the above, the steel truss structure based on double-section C-shaped steel provided by this utility model allows for direct connection between the supporting columns and web members and the upper and lower chords. Through ingenious structural design, it eliminates the numerous connecting plates found in existing technologies, simplifying on-site assembly, enabling all-bolted connections, and effectively reducing steel consumption (preliminary estimate: 1-2 kg of steel can be saved per square meter). This significantly reduces costs, achieves lightweight steel trusses, and, most importantly, enables factory prefabrication, facilitating transportation, disassembly, and reuse. It also significantly improves the processing and assembly efficiency and reuse value of steel trusses. Therefore, compared to existing technologies, this utility model possesses strong practicality and significant economic value.

[0024] Finally, it should be pointed out that the above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel truss structure based on double-section C-shaped steel, comprising a truss body and several supporting columns, wherein the truss body includes an upper chord, a lower chord, and several web members, the web members including straight web members and diagonal web members, and both the upper chord and the lower chord are composed of two C-shaped steel sections back-to-back; characterized in that: The upper end of the support column is sandwiched between the two C-shaped steels that form the upper chord, and the lower end of the support column extends downward through the two C-shaped steels that form the lower chord. The front and rear sides of the support column are respectively fixedly connected to the back of the adjacent C-shaped steels that form the upper and lower chords by bolts.

2. The steel truss structure based on double-section C-shaped steel according to claim 1, characterized in that: The upper ends of the straight web members and the diagonal web members are sandwiched between the two C-shaped steels that form the upper chord, and the lower ends of the straight web members and the diagonal web members are sandwiched between the two C-shaped steels that form the lower chord. The front and rear sides of the straight web members and the diagonal web members are respectively fixedly connected to the back of the adjacent C-shaped steels that form the upper and lower chords by bolts.

3. The steel truss structure based on double-section C-shaped steel according to claim 1 or 2, characterized in that: The straight web members and the diagonal web members are each made of rectangular steel or C-shaped steel independently.

4. The steel truss structure based on double-section C-shaped steel according to claim 1, characterized in that: The support columns are made of rectangular steel, H-beams, or I-beams.

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