Sawtooth roof steel truss

Abstract

The utility model discloses a sawtooth roof steel truss, including a plurality of main trusses of interval distribution, be equipped with a plurality of oblique support bars of inclination between any two adjacent main trusses, a plurality of oblique support bars are along the length direction distribution of main truss and constitute the oblique support surface of supporting both sides main truss, and the oblique support surface and a plurality of main trusses constitute sawtooth shape between. The utility model can effectively solve the poor plane external stability, the poor lighting and ventilation effect and other technical problems of the traditional steel truss roof.

Description

Technical Field

[0001] This utility model relates to the field of steel structure engineering technology, specifically to a sawtooth roof steel truss. Background Technology

[0002] In the field of modern architecture, steel truss roof systems, as an efficient and aesthetically pleasing structural form, are widely used in large-scale public buildings, especially in stadiums, exhibition centers, and airport terminals, which require large spans. Steel truss roof systems possess excellent spanning capabilities, enabling large spatial spans without relying on numerous intermediate supports, thus meeting the demand for open interior spaces in large public buildings. The system has a rational stress distribution, primarily relying on members to bear axial forces, saving significant amounts of material, improving material utilization, reducing structural self-weight, and consequently reducing requirements for foundations and supporting structures, thereby saving on project costs. Steel trusses are typically prefabricated in factories and then transported to the site for assembly; this modular construction method significantly shortens on-site work time and improves construction efficiency.

[0003] However, traditional steel truss roofs also have some drawbacks that cannot be ignored. Regarding out-of-plane stability, the compressed upper chord exhibits poor out-of-plane stability, making it difficult to effectively resist longitudinal lateral forces, especially for steel roof trusses. In terms of lighting and ventilation, traditional steel truss roofs typically employ a closed structural design, resulting in poor lighting and ventilation, requiring reliance on artificial lighting and ventilation systems, which increases building energy consumption and operating costs. Utility Model Content

[0004] The purpose of this utility model is to provide a sawtooth-shaped roof steel truss to effectively solve the technical problems of poor out-of-plane stability, poor lighting and ventilation effects of the above-mentioned traditional steel truss roofs.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0006] A sawtooth-shaped roof steel truss includes multiple main trusses distributed at intervals. Multiple inclined support rods are provided between any two adjacent main trusses. The multiple inclined support rods are distributed along the length of the main trusses and form inclined support surfaces that support the main trusses on both sides. The inclined support surfaces and the multiple main trusses form a sawtooth shape.

[0007] Optionally, the plurality of main trusses are parallel to each other, and in two adjacent main trusses, one end of the diagonal support rod is connected to the upper end of one of the main trusses, and the other end is connected to the lower end of the other main truss.

[0008] Optionally, all of the main trusses are planar trusses, each consisting of an upper chord, a lower chord, support columns, and web members. The upper and lower chords are distributed parallel to each other vertically. The support columns are connected to the ends of the upper and lower chords. One end of the web member is connected to the upper chord, and the other end is connected to the lower chord. In two adjacent main trusses, one end of the diagonal support member is connected to the upper chord of one of the main trusses, and the other end is connected to the lower chord of the other main truss.

[0009] Optionally, in two adjacent main trusses, the inner side of the upper chord of one main truss and the inner side of the lower chord of the other main truss are provided with corresponding fixing plates. One end of the diagonal support rod is fixedly connected to the fixing plate on the inner side of the upper chord of one main truss, and the other end is fixedly connected to the fixing plate on the inner side of the lower chord of the other main truss.

[0010] Optionally, multiple inclined support rods are distributed in a sawtooth pattern connected end to end along the length of the main truss to form the inclined support surface.

[0011] Optionally, the web members are provided in multiple forms, which are distributed in a serrated pattern between the upper chord and the lower chord.

[0012] Optionally, the lower chord is located above the lower end of the support column, and the upper chord, lower chord, and support column form a portal-shaped main truss.

[0013] Optionally, the inclined support surface forms a ventilation channel with the main truss on one side.

[0014] Optionally, the length of the inclined support surface may be the same as or less than the length of the main truss.

[0015] Optionally, the diagonal support rod is an I-beam, and the fixing plate is a thickened steel plate. In the same main truss, there are two fixing plates distributed at the connection positions of the diagonal support rod and the upper or lower chord.

[0016] The beneficial effects of this utility model are:

[0017] 1. In this utility model, the out-of-plane stiffness and stability of the main truss are enhanced by rationally designing the arrangement direction of the web members. Multiple diagonal support rods are set between adjacent main trusses to support the main truss. These multiple diagonal support rods form a continuous sawtooth-shaped diagonal support surface along the length of the main truss. The diagonal support surface constructs a continuous spatial force transmission path, improving the out-of-plane stability of the compressed upper chord. A ventilation channel is formed between the diagonal support and the main truss. The space between adjacent diagonal support rods is a hollow area connected to the ventilation channel, allowing for ventilation or lighting. Compared with traditional steel truss roof structures, this effectively solves problems such as poor out-of-plane stability, inadequate lighting, and poor ventilation.

[0018] 2. At the connection between the diagonal bracing and the upper or lower chord of the main truss, the node is specially reinforced by installing a thickened fixing plate to increase the stress area of ​​the connection, disperse the concentrated force transmitted from the diagonal bracing, avoid stress concentration, and improve the load-bearing capacity, stiffness and fatigue resistance of the node area.

[0019] 3. To meet the functional requirements of different areas of the roof, diagonal support rods and horizontal support rods can be installed simultaneously between two adjacent main trusses. The horizontal support rods and diagonal support rods work together to enable the roof steel structure truss system to achieve optimal stress performance in different areas and meet diverse building functions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 for Figure 1 A top-view structural diagram;

[0022] Figure 3 A three-dimensional structural diagram of the main truss;

[0023] Figure 4 This is a diagram showing the distribution structure of the diagonal support rods;

[0024] Figure 5 This is a schematic diagram of the connection between the inclined support rod and the fixed plate;

[0025] Figure 6 The diagram shows the inclined support surface forming a sawtooth pattern with the main truss.

[0026] Figure 7 A schematic diagram of the assembly of a planar support rod and a reinforcing rod;

[0027] Figure 8 This is an assembly structural diagram of the planar support rods, stiffeners, and main truss;

[0028] Attached reference numerals: 1-Main truss, 1-1-Upper chord, 1-2-Lower chord, 1-3-Web member, 1-4-Fixed plate, 2-Diagonal support rod, 3-Horizontal support surface, 3-1-Horizontal support rod, 3-2-Strengthening rod, 3-3-Connecting plate, 4-Support column, 5-Diagonal support surface, 6-Ventilation channel. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0030] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model 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 utility model.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example

[0033] A sawtooth roof steel truss includes multiple main trusses 1 spaced apart. Multiple inclined support rods 2 are provided between any two adjacent main trusses 1. The multiple inclined support rods 2 are distributed along the length of the main trusses 1 and form inclined support surfaces 5 that support the main trusses 1 on both sides. The inclined support surfaces 5 and the multiple main trusses 1 form a sawtooth shape.

[0034] In this embodiment, as Figure 1 and Figure 2 As shown, the roof steel truss includes multiple spaced main trusses 1, each main truss 1 being welded together from I-beams. Adjacent main trusses 1 are connected by welded or bolted connections of multiple inclined support rods 2, also made of I-beams. These multiple support rods 2 form an inclined support surface 5, as shown in the diagram. Figure 6 As shown, the inclined support surface 5 and multiple main trusses 1 form a sawtooth shape. The sawtooth inclined support surface 5 forms a continuous spatial force transmission path between two adjacent main trusses 1, which improves the out-of-plane stability of the compressed main truss 1. The overall structural stability is greater than that of traditional truss systems, which can adapt to large spans and complex load conditions and ensure the long-term safe use of the building.

[0035] Furthermore, the plurality of main trusses 1 are parallel to each other, and in two adjacent main trusses 1, one end of the diagonal support rod 2 is connected to the upper end of one of the main trusses 1, and the other end is connected to the lower end of the other main truss 1.

[0036] Specifically, such as Figures 3-5As shown, the multiple main trusses 1 are parallel to each other. In order to form an inclined support surface 5, one end of the inclined support rod 2 is fixedly connected to the upper end of one of the main trusses 1, and the other end is fixedly connected to the lower end of another main truss 1. In this way, the inclined support rod 2 is set at an inclination. The multiple inclined support rods 2 are continuously distributed along the length direction of the main trusses 1 to form an inclined support surface 5. The multiple inclined support surfaces 5 and the multiple main trusses 1 form a sawtooth roof steel truss.

[0037] Furthermore, all of the main trusses 1 are planar trusses. Each main truss 1 includes an upper chord 1-1, a lower chord 1-2, a support column 4, and a web member 1-3. The upper chord 1-1 and the lower chord 1-2 are distributed parallel to each other vertically. The support column 4 is connected to the ends of the upper chord 1-1 and the lower chord 1-2. One end of the web member 1-3 is connected to the upper chord 1-1, and the other end is connected to the lower chord 1-2. In two adjacent main trusses 1, one end of the diagonal support member 2 is connected to the upper chord 1-1 of one of the main trusses 1, and the other end is connected to the lower chord 1-2 of the other main truss 1.

[0038] Specifically, such as Figures 1-6 As shown, the upper chord 1-1, lower chord 1-2, support column 4, and web member 1-3 are located in the same vertical plane, making the main truss 1 a planar truss. The upper chord 1-1 and lower chord 1-2 are arranged in parallel, and are box-type members. The support column 4 is a steel column. The two ends of the upper chord 1-1 and lower chord 1-2 are fixed to the steel column by welding or bolting, forming the basic frame of the main truss 1. Multiple I-beam type web members 1-3 are fixedly installed between the main truss 1. The web members 1-3 are continuously distributed in the direction of the diagonal and the direction perpendicular to the lower chord 1-2. That is, one diagonal web member 1-3 and one vertical web member 1-3 form a group. Multiple groups are continuously distributed along the length of the main truss 1. The web members 1-3 are fixedly connected to the upper chord 1-1 and the lower chord 1-2 by welding to form a stable planar truss structure. The distribution of the web members 1-3 enhances the out-of-plane stiffness of the main truss 1 and effectively resists out-of-plane buckling.

[0039] Furthermore, in two adjacent main trusses 1, the inner side of the upper chord 1-1 of one main truss 1 and the inner side of the lower chord 1-2 of the other main truss 1 are provided with corresponding fixing plates 1-4. One end of the diagonal support rod 2 is fixedly connected to the fixing plate 1-4 on the inner side of the upper chord 1-1 of one main truss 1, and the other end is fixedly connected to the fixing plate 1-4 on the inner side of the lower chord 1-2 of the other main truss 1.

[0040] Furthermore, the inclined support rod 2 is an I-beam, and the fixing plate 1-4 is a thickened steel plate. In the same main truss 1, there are two fixing plates 1-4 at the connection positions of the inclined support rod 2 and the upper chord 1-1 or the lower chord 1-2.

[0041] Furthermore, multiple inclined support rods 2 are distributed in a sawtooth shape connected end to end along the length direction of the main truss 1 to form the inclined support surface 5.

[0042] Specifically, the multiple diagonal support rods 2 are arranged in a sawtooth pattern with their ends connected, that is, a V-shape is formed between two adjacent diagonal support rods 2.

[0043] Furthermore, the web members 1-3 are provided with multiple web members 1-3, which are distributed in a serrated manner between the upper chord member 1-1 and the lower chord member 1-2.

[0044] Specifically, such as Figure 3 As shown, the diagonal support rod 2 is also made of I-beams. In order to better connect the diagonal support rod 2 with the upper chord 1-1 and the lower chord 1-2, in this embodiment, in two adjacent main trusses 1, two thickened fixing plates 1-4 are welded to the inner side of the upper chord 1-1 of one main truss 1, and two thickened fixing plates 1-4 are welded to the inner side of the lower chord 1-2 of the other main truss 1. The fixing plates 1-4 are steel plates. One end of the diagonal support rod 2 is welded and fixed to the two fixing plates 1-4 on the inner side of the upper chord 1-1 of one main truss 1, and the other end is welded and fixed to the two fixing plates 1-4 on the inner side of the lower chord 1-2 of the other main truss 1. In this way, multiple diagonal support rods 2 are welded to the corresponding fixing plates 1-4 in sequence to form a sawtooth distribution, thus completing the installation of the diagonal support surface 5 and finally forming a sawtooth roof steel truss system in space. The structure of the fixed plates 1-4 increases the stress-bearing area of ​​the connection, effectively disperses the concentrated force transmitted from the inclined support rod 2, avoids stress concentration, improves the load-bearing capacity, stiffness and fatigue resistance of the node area, ensures the overall structural reliability, and reduces safety hazards caused by node failure.

[0045] Furthermore, the lower chord 1-2 is located above the lower end of the support column 4, and the upper chord 1-1, the lower chord 1-2 and the support column 4 form a portal-shaped main truss 1.

[0046] Furthermore, the inclined support surface 5 and the main truss 1 on one side form a ventilation channel 6.

[0047] Specifically, such as Figure 6As shown, assuming the inclined support surface 5 tilts to the right, and the right end of the inclined support surface 5 is lower than the top of the main truss 1, then the inclined support surface 5 and the main truss 1 on the right side form a triangular groove. The top surface of the roof steel truss is covered with decorative panels, and this triangular area is a ventilation channel 6. The wind can flow along the axial direction of the ventilation channel 6. At the same time, there is a hollow area between two adjacent inclined support rods 2 that is connected to the ventilation channel 6. The ventilation channel 6 creates favorable conditions for natural ventilation, improves indoor air quality and comfort, and meets the needs of modern buildings for a healthy and comfortable environment. At the same time, it can also form a good lighting channel inside the building, greatly improve the indoor lighting effect, reduce the dependence on artificial lighting, and reduce building energy consumption.

[0048] Furthermore, the length of the inclined support surface 5 is the same as or less than the length of the main truss 1.

[0049] In this embodiment, if ventilation and lighting are required at all locations of the roof steel truss, then the length of the inclined support surface 5 must be consistent with the length of the main truss 1. For example... Figure 1 and Figure 2 As shown, if certain parts of the roof steel truss may not require lighting and ventilation, then in this case, the length of the inclined support surface 5 needs to be less than the length of the main truss 1. A horizontal support rod 3-1 is installed on one side of the inclined support surface 5. The horizontal support rod 3-1 is an I-beam or box-type rod, and both ends of the horizontal support rod 3-1 are welded and fixed to the upper chord members 1-1 of the main truss 1 on both sides. Figure 7 and Figure 8 As shown, a connecting plate 3-3 is welded to the side of the lower chord 1-2 of the main truss 1 and the lower side of the horizontal support rod 3-1, respectively. Then, the two ends of the reinforcing rod 3-2, which is composed of two channel steels, are welded or bolted to the corresponding connecting plate 3-3, thereby completing the installation of the horizontal support surface 3. Horizontal support rods 3-1 and reinforcing rods 3-2 are set up to meet the functional requirements of different areas of the roof. They cooperate with the diagonal support rods 2 to optimize the stress performance in areas without lighting and ventilation requirements. This allows the entire roof steel structure truss system to flexibly adapt to diverse building functional requirements, such as the functional differences of different production areas in industrial plants and the conversion of multifunctional spaces in large commercial buildings.

[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A sawtooth roof steel truss, characterized by, It includes multiple main trusses (1) spaced apart, and multiple inclined support rods (2) are provided between any two adjacent main trusses (1). The multiple inclined support rods (2) are distributed along the length of the main trusses (1) and form inclined support surfaces (5) that support the main trusses (1) on both sides. The inclined support surfaces (5) and the multiple main trusses (1) form a sawtooth shape.

2. A sawtooth roof steel truss according to claim 1, wherein The plurality of main trusses (1) are parallel to each other. In two adjacent main trusses (1), one end of the diagonal support rod (2) is connected to the upper end of one of the main trusses (1), and the other end is connected to the lower end of the other main truss (1).

3. A sawtooth roof steel truss according to claim 2, wherein, The multiple main trusses (1) are all planar trusses. The main truss (1) includes an upper chord (1-1), a lower chord (1-2), a support column (4), and a web member (1-3). The upper chord (1-1) and the lower chord (1-2) are distributed parallel to each other vertically. The support column (4) is connected to the ends of the upper chord (1-1) and the lower chord (1-2). One end of the web member (1-3) is connected to the upper chord (1-1), and the other end is connected to the lower chord (1-2). In two adjacent main trusses (1), one end of the diagonal support member (2) is connected to the upper chord (1-1) of one of the main trusses (1), and the other end is connected to the lower chord (1-2) of the other main truss (1).

4. A sawtooth roof steel truss according to claim 3, wherein In two adjacent main trusses (1), the inner side of the upper chord (1-1) of one main truss (1) and the inner side of the lower chord (1-2) of the other main truss (1) are provided with corresponding fixing plates (1-4). One end of the diagonal support rod (2) is fixedly connected to the fixing plate (1-4) on the inner side of the upper chord (1-2) of one main truss (1), and the other end is fixedly connected to the fixing plate (1-4) on the inner side of the lower chord (1-2) of the other main truss (1).

5. A sawtooth roof steel truss according to claim 1, wherein Multiple inclined support rods (1) are distributed in a sawtooth shape with their ends connected, along the length of the main truss (1) to form the inclined support surface (5).

6. A sawtooth roof steel truss according to claim 3, wherein The web members (1-3) are provided in multiple forms, and the multiple web members (1-3) are distributed in a sawtooth shape between the upper chord (1-2) and the lower chord (1-3).

7. A sawtooth roof steel truss according to claim 3, wherein The lower chord (1-2) is located above the lower end of the support column (4), and the upper chord (1-1), the lower chord (1-2) and the support column (4) form a portal-shaped main truss (1).

8. A sawtooth roof steel truss according to claim 5, wherein, The inclined support surface (5) and the main truss (1) on one side form a ventilation channel (6).

9. A sawtooth roof steel truss according to claim 8, wherein, The length of the inclined support surface (5) is the same as or less than the length of the main truss (1).

10. A sawtooth roof steel truss according to claim 4, wherein, The inclined support rod (2) is an I-beam, and the fixing plate (1-4) is a thickened steel plate. In the same main truss (1), there are two fixing plates (1-4) at the connection positions of the inclined support rod (2) and the upper chord (1-1) or the lower chord (1-2).

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