Bolting assembly type cold-formed thin-walled C-shaped steel truss

Abstract

The utility model is suitable for the technical field of building structures, and provides a bolted assembly type cold-formed thin-walled C-shaped steel truss. The bolting assembly type cold-formed thin-walled C-shaped steel truss comprises a plurality of sets of frame bodies which are arranged at intervals and connected in sequence. The frame body comprises a frame main body and two upper chords, the two upper chords are arranged on the frame main body, are symmetrically arranged by taking a preset surface as a center and are connected with each other, and the upper chords are thin-walled steel parts. The wall thickness of the thin-wall section steel is relatively small, and the weight of the thin-wall section steel is lighter than that of a truss made of hot-rolled section steel and welded section steel under the condition that the same bearing capacity is met; the weight of the truss is reduced, so that the transportation cost is reduced, the transportation efficiency is improved, and the transportation limitation is reduced; and the assembly difficulty is reduced, the assembly precision is improved, and the assembly period is shortened.

Description

Technical Field

[0001] This application belongs to the field of building structure technology, and more specifically, relates to a bolted prefabricated cold-formed thin-walled C-shaped steel truss. Background Technology

[0002] A truss is a lattice structure consisting of several straight members connected at both ends by nodes. It is usually composed of members such as top chord, bottom chord, and web members. These members are connected to each other by nodes to form basic units such as triangles and quadrilaterals, which in turn constitute the entire truss structure.

[0003] In related technologies, trusses are mostly made of hot-rolled steel or welded steel, which generally makes them heavy and difficult to transport and assemble. Utility Model Content

[0004] The purpose of this application is to provide a bolted assembly cold-formed thin-walled C-shaped steel truss, which aims to solve the technical problem of excessive truss weight in related technologies.

[0005] To achieve the above objectives, according to one aspect of this application, a bolted assembled cold-formed thin-walled C-shaped steel truss is provided, comprising multiple sets of frame bodies arranged at intervals and connected in sequence; the frame body includes a frame body and two upper chords, the two upper chords are arranged on the frame body and symmetrically arranged around a preset surface and connected to each other, the upper chords being thin-walled steel members.

[0006] Optionally, the frame body includes a lower chord and two supporting connecting rods. The lower chord is located on one side of the upper chord and is a thin-walled steel member. The two supporting connecting rods are respectively connected to the two upper chords and are also connected to the lower chord.

[0007] Optionally, the support connecting rod is a hot-rolled channel steel component.

[0008] Optionally, the support connecting rod is connected to the upper chord and the lower chord via a first connecting bolt.

[0009] Optionally, the lower chord also includes a first rod body and a second rod body, the first rod body being connected to one of the two supporting connecting rods, and the second rod body being connected to the other, the first rod body and the second rod body being connected by a first connector.

[0010] Optionally, the first connecting member includes an outer channel steel and a second connecting bolt. The outer channel steel is sleeved on the first rod and the second rod and connected to the first rod and the second rod by the second connecting bolt.

[0011] Optionally, the frame also includes multiple web members, which are spaced apart between the upper chord and the frame body and connected to the upper chord and the frame body respectively.

[0012] Optionally, the web members are connected to the upper chord and the frame body via a third connecting bolt.

[0013] Optionally, the frame also includes a second connector, through which the two upper chords are connected; the second connector includes an inner channel steel and a fourth connecting bolt, the inner channel steel is fitted onto the two upper chords and connected to the two upper chords through the fourth connecting bolt.

[0014] Optionally, the bolted assembled cold-formed thin-walled C-shaped steel truss is a zinc-aluminum-magnesium steel structure.

[0015] The beneficial effects of the bolted prefabricated cold-formed thin-walled C-shaped steel truss provided in this application are as follows: Firstly, the thin-walled steel has a relatively thin wall thickness, resulting in a lighter weight compared to trusses made of hot-rolled or welded steel while maintaining the same load-bearing capacity. This lighter weight not only reduces transportation costs, improves transportation efficiency, and minimizes transportation restrictions, but also reduces assembly difficulty, improves assembly accuracy, and shortens the assembly period. Secondly, thin-walled steel has a high strength-to-weight ratio, ensuring the structural strength and stability of the truss while reducing weight. Thirdly, thin-walled steel is typically manufactured using processes such as cold bending, which, compared to hot-rolled or welded steel, not only reduces processing costs but also requires less steel to meet the same structural performance requirements, effectively reducing material costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of the frame provided in an embodiment of this application;

[0018] Figure 2 A partial schematic diagram showing the structure of the first connector and the lower chord used in conjunction with an embodiment of this application;

[0019] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 4 A partial schematic diagram showing the structure of the second connector and the upper chord used in conjunction with an embodiment of this application;

[0021] The details of the reference numerals used in the above figures are as follows:

[0022] 100. Frame;

[0023] 110. Frame body; 111. Lower chord; 111a. First rod; 111b. Second rod; 112. Support connecting rod;

[0024] 120. Top chord;

[0025] 130. First connecting bolt;

[0026] 140. First connecting piece; 141. Outer channel steel; 142. Second connecting bolt;

[0027] 150. Web member;

[0028] 160. Third connecting bolt;

[0029] 170. Second connecting piece; 171. Inner sleeve channel steel; 172. Fourth connecting bolt. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly or indirectly on that other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to that other element. 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.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] As described in the background section, a truss is a lattice structure composed of several straight members connected at both ends by nodes. It typically consists of members such as top chords, bottom chords, and web members, which are interconnected at nodes to form basic units such as triangles and quadrilaterals, thus constituting the entire truss structure. In related technologies, trusses are mostly made of hot-rolled or welded steel sections, which generally result in heavy trusses, making them unsuitable for transportation and assembly.

[0035] Reference Figure 1 To address the aforementioned problems, according to one aspect of this application, an embodiment of this application provides a bolted assembled cold-formed thin-walled C-shaped steel truss. The bolted assembled cold-formed thin-walled C-shaped steel truss includes multiple sets of frame bodies 100 that are spaced apart and connected sequentially. Each frame body 100 includes a frame body 110 and two upper chords 120. The two upper chords 120 are disposed on the frame body 110 and are symmetrically arranged around a predetermined surface and connected to each other. The upper chords 120 are thin-walled steel components.

[0036] In this embodiment, multiple sets of frame bodies 100 are spaced apart and connected to each other in the horizontal direction. In other embodiments, the multiple sets of frame bodies 100 may also be spaced apart in the vertical direction or in an inclined direction that intersects with the horizontal and vertical directions. Two upper chord members 120 may be fixedly installed on the frame body 110 by welding. The frame body 110 serves to support the upper chord members 120. The preset surface is a vertical surface. In other embodiments, the preset surface may also be a horizontal surface or an inclined surface that intersects with the vertical and horizontal surfaces. The upper chord members 120 are made of thin-walled steel.

[0037] In this application, firstly, thin-walled steel has a relatively thin wall thickness, resulting in a lighter weight compared to trusses made of hot-rolled or welded steel while maintaining the same load-bearing capacity. This lighter weight not only reduces transportation costs, improves efficiency, and minimizes restrictions, but also simplifies assembly, increases precision, and shortens the assembly time. Secondly, thin-walled steel has a higher strength-to-weight ratio, ensuring structural strength and stability while reducing weight. Thirdly, thin-walled steel is typically manufactured using cold-forming processes, which lowers processing costs compared to hot-rolled or welded steel. Furthermore, it requires less steel to meet the same structural performance requirements, effectively reducing material costs.

[0038] Reference Figure 1 In one embodiment, the frame body 110 includes a lower chord 111 and two supporting connecting rods 112. The lower chord 111 is located on one side of the upper chord 120 and is a thin-walled steel member. The two supporting connecting rods 112 are respectively connected to the two upper chords 120 and are both connected to the lower chord 111.

[0039] In this embodiment, the lower chord 111 is located below the upper chord 120 and is arranged horizontally; the supporting connecting rod 112 is located between the upper chord 120 and the lower chord 111 and is arranged vertically. The two supporting connecting rods 112 are fixedly connected to the two upper chords 120 respectively, and both are fixedly connected to the lower chord 111; the lower chord 111 is made of thin-walled steel. In other embodiments, the lower chord 111 may also be located to the left, right, or above the upper chord 120.

[0040] The lower chord 111 is a thin-walled steel member, just like the upper chord 120, fully leveraging the high strength-to-weight ratio of thin-walled steel. While ensuring structural strength and stability, it further reduces the overall weight of the truss. Simultaneously, the good machinability and formability of thin-walled steel facilitate the fabrication of members of various shapes and sizes according to design requirements, meeting the needs of different projects. Furthermore, the above structural design facilitates modular design and manufacturing of the truss; the upper chord 120, lower chord 111, and supporting connecting rod 112 can be prefabricated into standard modules in the factory and then quickly assembled on-site. This not only reduces on-site construction workload and time, improving construction efficiency, but also helps ensure construction quality.

[0041] Reference Figure 1In one embodiment, the upper chord 120 is arranged along a first direction, the lower chord 111 is arranged along a second direction, and the support connecting rod 112 is arranged along a third direction, which is perpendicular to the second direction. The support connecting rod 112 has a first end and a second end arranged opposite to each other. The first end is located on the side of the second end closer to the upper chord 120. The first direction gradually inclines towards the support connecting rod 112 from the first end to the second end. The first direction intersects with the second direction and the third direction.

[0042] In this embodiment, the first direction is an inclined direction that intersects the horizontal and vertical directions, the second direction is parallel to the horizontal direction, the third direction is parallel to the vertical direction, and the first end is located above the second end.

[0043] The upper chord 120, lower chord 111, and supporting connecting rod 112 are interconnected to form a triangular structural unit, which not only enhances the overall stability of the truss structure, but also allows the load to be reasonably distributed along the direction of each member during the transmission process, avoiding the phenomenon of force concentration, and further improving the stability and load-bearing capacity of the truss structure.

[0044] Reference Figure 1 In one embodiment, the support connecting rod 112 is a hot-rolled channel steel component. In this embodiment, the support connecting rod 112 is made of hot-rolled channel steel.

[0045] On the one hand, hot-rolled channel steel, processed by hot rolling, possesses high strength and rigidity. As a supporting connecting rod 112, it plays a stabilizing role in the truss structure, effectively bearing the loads transmitted from the upper chord 120 and lower chord 111. This effectively solves the problem of load transition between the upper chord 120 and lower chord 111, ensuring the integrity and stability of the entire truss under various external forces and improving its load-bearing capacity. On the other hand, hot-rolled channel steel has a regular shape and size, and its two flanges and web provide convenient planes and structures for connection. When connected to the upper chord 120 and lower chord 111, it can be firmly connected by welding, bolting, or other methods. The connection process is relatively simple and convenient for construction, improving the efficiency and quality of the connection while ensuring the reliability of the connection between the members.

[0046] Reference Figure 1 In one embodiment, the support connecting rod 112 is connected to the upper chord 120 and the lower chord 111 by a first connecting bolt 130.

[0047] In this embodiment, the upper chord 120, lower chord 111, and supporting connecting rod 112 are all provided with connecting through holes for the first connecting bolt 130 to pass through. On the one hand, using the first connecting bolt 130 for connection not only simplifies the connection method, increases assembly speed, and shortens the assembly cycle, but also facilitates disassembly, providing convenience for subsequent maintenance, repair, and replacement operations. On the other hand, using the first connecting bolt 130 for connection not only firmly connects the upper chord 120, lower chord 111, and supporting connecting rod 112 together, ensuring the structural strength and stability of the truss, but also allows for a certain degree of relative displacement and rotation between the members, thus accommodating truss deformation to a certain extent. Furthermore, using the first connecting bolt 130 for connection also helps reduce costs.

[0048] In addition, to address the problem of hole wall tearing caused by insufficient local bearing pressure in the upper chord 120 and lower chord 111, the first connecting bolt 130 has a washer for contacting the upper chord 120 or the lower chord 111.

[0049] Reference Figure 1 and Figure 2 In one embodiment, the lower chord 111 further includes a first rod body 111a and a second rod body 111b. The first rod body 111a is connected to one of the two supporting connecting rods 112, and the second rod body 111b is connected to the other. The first rod body 111a and the second rod body 111b are connected by a first connector 140.

[0050] In this embodiment, both the first rod 111a and the second rod 111b are arranged horizontally. The first rod 111a is fixedly connected to one of the two supporting connecting rods 112, and the second rod 111b is fixedly connected to the other supporting connecting rod 112. The first connecting member 140 can be a bolt connection structure, a pin connection structure, or a key connection structure.

[0051] On the one hand, dividing the lower chord 111 into a first member 111a and a second member 111b, connected by a first connector 140, not only facilitates manufacturing and processing but also transportation and facilitates handling and assembly by construction personnel. On the other hand, during actual assembly, construction personnel can select appropriate first connectors 140 and adjust the lengths of the first member 111a and the second member 111b according to specific project requirements and stress conditions to optimize the mechanical properties of the lower chord 111, enabling it to better withstand loads from different directions, thereby improving the stability and reliability of the entire truss structure. Furthermore, during the use of the truss, if a part of the lower chord 111 is damaged or requires repair, only the first connector 140 needs to be disassembled to easily replace or repair the damaged member, without needing to dismantle and replace the entire lower chord 111, reducing maintenance costs and difficulty.

[0052] Reference Figure 2 In one embodiment, the first connector 140 includes an outer grooved steel 141 and a second connecting bolt 142. The outer grooved steel 141 is sleeved on the first rod body 111a and the second rod body 111b, and is connected to the first rod body 111a and the second rod body 111b by the second connecting bolt 142.

[0053] In this embodiment, the first rod 111a, the second rod 111b, and the outer sleeve grooved steel 141 are all provided with connecting through holes for the second connecting bolts 142 to pass through. On the one hand, the above structural design not only helps to improve assembly efficiency but also facilitates disassembly and maintenance; in addition, it facilitates procurement and helps control material costs. On the other hand, the outer sleeve grooved steel 141, fitted onto the first rod 111a and the second rod 111b, provides a larger contact area, making the force transmission more uniform. The tightening with the second connecting bolts 142 effectively enhances the connection strength between the first rod 111a and the second rod 111b, ensuring that the rods do not easily experience relative displacement or loosening under various loads, thus contributing to the stability of the entire truss structure.

[0054] Reference Figure 1 and Figure 3 In one embodiment, the frame 100 further includes a plurality of web members 150, which are spaced apart between the upper chord 120 and the frame body 110, and are respectively connected to the upper chord 120 and the frame body 110.

[0055] In this embodiment, multiple web members 150 are spaced apart along the second direction. Two web members 150 located at the two side edges are fixedly connected to two supporting connecting rods 112, and the remaining web members 150 are fixedly connected to the lower chord 111. The web members 150, together with the upper chord 120 and the frame body 110, enhance the structural stability of the truss, optimize the force transmission path, and improve the structural strength of the truss.

[0056] Reference Figure 1 and Figure 3 In one embodiment, the length direction of the web member 150 intersects with the first direction, the second direction, and the third direction. In this embodiment, the length direction of the web member 150 intersects with both the horizontal and vertical directions, i.e., it is inclined. The web member 150 not only enhances the shear resistance of the truss but also improves the spatial stability of the truss.

[0057] Reference Figure 1 and Figure 3 In one embodiment, two adjacent web members 150 are arranged intersecting. This structural design improves the overall stability and load-bearing capacity of the truss.

[0058] Reference Figure 1 and Figure 3 In one embodiment, the web member 150 is connected to the upper chord member 120 and the frame body 110 by a third connecting bolt 160.

[0059] In this embodiment, the upper chord 120, lower chord 111, supporting connecting rod 112, and web member 150 are all provided with connecting through holes for the third connecting bolt 160 to pass through. On the one hand, using the third connecting bolt 160 for connection not only simplifies the connection method, increases assembly speed, and shortens the assembly cycle, but also facilitates disassembly, providing convenience for subsequent maintenance, repair, and replacement operations. On the other hand, using the third connecting bolt 160 not only firmly connects the web member 150, upper chord 120, and frame body 110 together, ensuring the structural strength and stability of the truss, but also allows for a certain degree of relative displacement and rotation between the members, thus accommodating truss deformation to a certain extent. Furthermore, using the third connecting bolt 160 for connection also helps reduce costs.

[0060] In addition, to address the problem of hole wall tearing caused by insufficient local bearing pressure in the upper chord 120 and lower chord 111, the third connecting bolt 160 has a washer for contacting the upper chord 120 and lower chord 111.

[0061] Reference Figure 1 and Figure 4In one embodiment, the frame 100 further includes a second connector 170, through which the two upper chords 120 are connected; the second connector 170 includes an inner channel steel 171 and a fourth connecting bolt 172, the inner channel steel 171 is sleeved on the two upper chords 120 and connected to the two upper chords 120 through the fourth connecting bolt 172.

[0062] In this embodiment, both upper chord members 120 and the inner sleeve channel steel 171 are provided with connecting through holes for the fourth connecting bolt 172 to pass through. On the one hand, the above structural design not only helps to improve assembly efficiency, but also facilitates disassembly and maintenance; in addition, it facilitates procurement and helps control material costs. On the other hand, the inner sleeve channel steel 171, fitted onto the two upper chord members 120, provides a larger contact area, making the force transmission more uniform. The fourth connecting bolt 172, when tightened, effectively enhances the connection strength between the two upper chord members 120, ensuring that the members do not easily undergo relative displacement or loosening under various loads, thus improving the stability of the entire truss structure.

[0063] Reference Figure 1 In one embodiment, the bolted prefabricated cold-formed thin-walled C-shaped steel truss is a zinc-aluminum-magnesium steel structure. In this embodiment, all components of the bolted prefabricated cold-formed thin-walled C-shaped steel truss are made of zinc-aluminum-magnesium-copper materials, and are all finished products shipped from the factory, eliminating the need for secondary galvanizing or painting. This not only reduces the risk of environmental pollution but also improves construction efficiency.

[0064] In summary, implementing the bolted prefabricated cold-formed thin-walled C-shaped steel truss provided in this embodiment has at least the following beneficial technical effects: Firstly, the thin-walled steel has a relatively thin wall thickness, resulting in a lighter weight compared to trusses made of hot-rolled or welded steel while maintaining the same load-bearing capacity. This lighter weight not only reduces transportation costs, improves transportation efficiency, and reduces transportation restrictions, but also reduces assembly difficulty, improves assembly accuracy, and shortens the assembly period. Secondly, thin-walled steel has a high strength-to-weight ratio, ensuring the structural strength and stability of the truss while reducing weight. Thirdly, thin-walled steel is typically manufactured using cold-forming processes, which, compared to hot-rolled or welded steel, not only reduces processing costs but also requires less steel to meet the same structural performance requirements, effectively reducing material costs.

[0065] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bolted fabricated cold-formed thin-walled C-steel truss, characterized in that, The rack body comprises a lower chord and two support connecting rods, the lower chord is located on one side of the upper chord, and the lower chord is a thin-walled steel piece; the two support connecting rods are respectively connected with the two upper chords and are both connected with the lower chord.

2. The cold-formed thin-walled C-steel truss of claim 1, wherein, The support connecting rod is a hot-rolled channel steel piece.

3. The bolted fabricated cold-formed thin-walled C-steel truss according to claim 2, wherein, The support connecting rod is connected with the upper chord and the lower chord through a first connecting bolt.

4. The bolted fabricated cold-formed thin-walled C-steel truss according to claim 2, wherein, The lower chord further comprises a first rod body and a second rod body, the first rod body is connected with one of the two support connecting rods, the second rod body is connected with the other one, and the first rod body and the second rod body are connected through a first connecting piece.

5. The cold-formed thin-walled C-steel truss of claim 2, wherein, The first connecting piece comprises an outer sleeve channel steel and a second connecting bolt, the outer sleeve channel steel is sleeved on the first rod body and the second rod body and is connected with the first rod body and the second rod body through the second connecting bolt.

6. The bolted fabricated cold-formed thin-walled C-steel truss according to claim 5, wherein, The rack body further comprises a plurality of web rods, the plurality of web rods are arranged at intervals between the upper chord and the rack body and are respectively connected with the upper chord and the rack body.

7. The cold-formed thin-walled C-Channel truss of claim 1, wherein, The web rod is connected with the upper chord and the rack body through a third connecting bolt.

8. The bolted fabricated cold-formed thin-walled C-steel truss according to claim 7, wherein, The rack body further comprises a second connecting piece, the two upper chords are connected through the second connecting piece; the second connecting piece comprises an inner sleeve channel steel and a fourth connecting bolt, the inner sleeve channel steel is sleeved on the two upper chords and is connected with the two upper chords through the fourth connecting bolt.

9. The cold-formed thin-walled C-Channel truss of claim 1, wherein, The bolted assembly type cold-formed thin-walled C-shaped steel truss is a zinc-aluminum-magnesium steel structure.

10. The cold-formed thin-walled C-Channel truss of any one of claims 1 to 9, wherein, ​

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