Reinforced truss and structure
By incorporating concrete composite components and movable columns into the steel pipe truss, the problem of insufficient stiffness in cold-formed thin-walled steel pipe trusses was solved, thereby improving the stability and wind resistance of large-span photovoltaic panel supports.
Patent Information
- Application Number
- CN202422920549.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Existing cold-formed thin-walled steel pipe trusses lack sufficient stiffness and exhibit significant deformation in the support of large-span photovoltaic panels, making it difficult to effectively withstand external forces such as photovoltaic panels, wind loads, and temperature effects.
The design employs a composite component with steel pipes and embedded concrete to form a reinforced truss. Through the fixed connection of the upper chord, lower chord, and web members, combined with shear-resistant and sealing components, the stiffness and load-bearing capacity of the truss are enhanced, and temperature stress is released through movable columns.
It significantly improves the stiffness and wind resistance of the truss, reduces deformation, enhances stability under external forces, and reduces the impact of temperature stress.
Smart Images
Figure CN223793771U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of structural technology, and specifically relates to a reinforced truss and structure. Background Technology
[0002] Photovoltaics plays a vital role in my country's energy development. Solar photovoltaic (PV) mounting systems are specialized supports designed for placing, installing, and securing solar panels within a solar PV power generation system. Support materials include aluminum alloy, carbon steel, and stainless steel. When the PV panels have a large span, steel trusses are used to support them. These steel trusses are typically composed of cold-formed thin-walled steel pipes, with a maximum cross-sectional dimension of no more than 300mm and a span ranging from 10m to 30m. This truss must bear the weight of the PV panels and purlins, wind loads, temperature effects, and seismic forces. However, cold-formed thin-walled steel pipe trusses suffer from low stiffness and significant deformation. Utility Model Content
[0003] This invention provides a reinforced truss and structure to achieve the goal of increasing truss stiffness and reducing deformation.
[0004] To achieve the above objectives, the present invention adopts the following technical solution.
[0005] A reinforced truss, characterized in that: the reinforced truss includes an upper chord, a lower chord, and web members; the upper chord is a steel pipe; the steel pipe is filled with concrete; the concrete is locally distributed along the length of the upper chord; the lower chord is a steel pipe or a structural steel section; the web members are structural steel sections or steel pipes; the web members include straight web members and / or diagonal web members; the upper chord is fixedly connected to the web members; the lower chord is fixedly connected to the web members.
[0006] Preferably, the concrete is locally distributed in the middle of the upper chord.
[0007] Preferably, the concrete contains reinforcing steel bars.
[0008] Preferably, the steel pipe of the upper chord is formed by fixed connection of shaped steel or steel plate; the inner wall of the steel pipe of the upper chord has a shear-resistant member, which is fixedly connected to the steel pipe.
[0009] Preferably, the concrete end has a sealing component.
[0010] Preferably, the lower chord is a steel pipe, and the steel pipe contains concrete.
[0011] Preferably, the structure includes reinforced trusses and columns; there are at least two columns arranged at intervals; the columns are connected to the reinforced trusses.
[0012] Preferably, at least one straight web member is located in the edge region of the truss; the length of the lower chord is shorter than the length of the upper chord; and the connection between the column and the reinforced truss is movable.
[0013] Preferably, the columns are steel pipe columns, steel sections, or steel-concrete composite columns.
[0014] Compared with the prior art, the present invention has the following features and beneficial effects.
[0015] 1. The upper chord of the steel pipe truss contains concrete, forming a composite member that strengthens the truss's rigidity and reduces deformation;
[0016] 2. The lower chord of the steel pipe truss contains concrete, forming a composite member that strengthens the truss's rigidity and reduces deformation;
[0017] 3. The presence of concrete inside the truss increases its self-weight and enhances its resistance to wind suction.
[0018] 4. The connection between the truss and the column is movable, which can release temperature stress and reduce the stress on the truss and column;
[0019] 5. Installing shear-resistant components or end members inside the steel pipe allows the concrete and steel pipe to work together.
[0020] 6. Reinforcing bars are installed inside the steel pipe to reduce the shrinkage and creep of the concrete and the steel pipe. Attached Figure Description
[0021] The present invention will now be described in further detail with reference to the accompanying drawings.
[0022] Figure 1 Schematic diagram of reinforced truss facade Figure 1 .
[0023] Figure 2 Schematic diagram of reinforced truss facade Figure 2 .
[0024] Figure 3 Schematic diagram of reinforced truss facade Figure 3 .
[0025] Figure 4 Schematic diagram of reinforced truss facade Figure 4 .
[0026] Figure 5 Elevation diagram of the reinforced truss structure.
[0027] Figure 6 Steel pipe cross-section Figure 1 .
[0028] Figure 7 Steel pipe cross-section Figure 2 .
[0029] Figure reference numerals: A-Strengthened truss, B-Column, 1-Upper chord, 2-Lower chord, 3-Web member, 3.1-Straight web member, 3.2-Diagonal web member, 4-Concrete, 5-Reinforcing steel, 6-Shear member, 7-Sealing member. Detailed Implementation
[0030] To better understand the purpose, technical solution, and function of this utility model, a more detailed description of the utility model is provided below with reference to the accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the utility model, but are not intended to limit the utility model.
[0031] In the description of this utility model, it should be understood that the terms "comprising / including," "consisting of," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements includes not only those elements but may also include, when necessary, other elements not expressly listed, or elements inherent to such a product, apparatus, process, or method. Without further limitation, an element defined by the phrase "comprising / including…" or "consisting of…" does not exclude the presence of additional identical elements in the product, apparatus, process, or method that includes said element.
[0032] In this utility model, unless otherwise explicitly specified and limited, the term "fixed connection" should be interpreted broadly, for example, it can refer to a sleeve connection, an lap joint, a weld, a bolted connection, or a combination of the above connections; the term "movable connection" should be interpreted broadly, for example, it can refer to a bolted connection, a sliding connection, a ball bearing connection, or a combination of the above connections; the terms "installation," "connection," and "linking" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components; the term "continuous reinforcing bar" refers to a reinforcing bar that is continuous without breakage, or a reinforcing bar that is broken but with a fixed connection between the broken reinforcing bars. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0033] The present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments.
[0034] like Figure 1 , Figure 2 As shown, a reinforced truss, reinforced truss A includes an upper chord 1, a lower chord 2, and web members 3; the upper chord 1 is a steel pipe, and concrete 4 is placed inside the steel pipe. The concrete 4 is locally distributed along the length of the upper chord; the lower chord 2 is a steel pipe or a steel section; the web members 3 are steel sections or steel pipes; the web members 3 include straight web members 3.1 and diagonal web members 3.1; the upper chord 1 is fixedly connected to the web members 3; and the lower chord 2 is fixedly connected to the web members 3.
[0035] When concrete 4 is locally distributed along the length of the upper chord, the upper chord of the truss forms a locally reinforced steel-concrete composite member, effectively improving the stiffness and load-bearing capacity of the upper chord of the truss; the built-in concrete can absorb a certain amount of heat, reducing the temperature change of the steel pipe, and thus reducing temperature stress; increasing the weight of the truss, thereby enabling it to resist the upward suction force generated by wind load under extreme conditions, reducing the stress and deformation of the truss.
[0036] In practice, concrete 4 can be distributed along the entire length of the upper chord.
[0037] In practice, concrete 4 is locally distributed in the middle of the upper chord 1. The length of the concrete is 10% to 95% of the length of the upper chord 1. Under the action of its own weight and the gravity transmitted from the photovoltaic panel, the middle part experiences greater pressure. By placing the composite component in the middle, the amount of concrete used and construction can be reduced.
[0038] like Figure 4 As shown, in specific implementation, steel bars 5 are placed inside concrete 4. Steel bars 5 are longitudinal bars; or steel bars 5 are a combination of longitudinal and transverse bars, forming a steel cage. Their function is to reduce the shrinkage and creep of concrete, allowing the steel pipe and concrete to work together better. They also improve the load-bearing capacity and stiffness under temperature stress.
[0039] In practice, the diameter of the reinforcing bars should not exceed 10mm, preferably 6-14mm, and there should be no fewer than 3 bars.
[0040] In practical implementation, when the truss is made of steel pipe, the cross-sectional dimension should not exceed 350mm. The wall thickness should be 3mm to 16mm. Purpose: To reduce steel consumption.
[0041] like Figure 3 and Figure 4 As shown, in specific implementation, the concrete ends 4 have sealing components 7. The sealing components are steel plates, welded together with the steel pipe. The thickness of the steel plate for the sealing components is 6mm to 20mm. Function: To enhance the combined effect of the steel pipe and the concrete.
[0042] In practice, the size of the sealing component is not smaller than the cross-sectional size of the steel pipe, and the steel pipe is welded to the steel plate from both sides as a single unit. Function: To enhance the combined effect of the steel pipe and concrete, facilitating construction.
[0043] In practice: the sealing component has an opening. The opening size is 40mm to 250mm. Its purpose is to facilitate concrete pouring.
[0044] like Figure 3 , Figure 4 , Figure 5 As shown, in specific implementation, the lower chord is a steel pipe, and the steel pipe contains concrete 4.
[0045] The lower chord of the truss forms a reinforced steel-concrete composite member, effectively improving the stiffness and load-bearing capacity of the lower chord. The embedded concrete absorbs heat, reducing temperature changes in the steel tubes and thus reducing temperature stress. The increased weight of the truss also helps it resist the upward suction force generated by wind loads in extreme conditions, reducing stress and deformation. Together with the upper chord, it forms an integral truss, enhancing overall stiffness and load-bearing capacity.
[0046] In practice, the lower chord can be partially or fully filled with concrete; reinforcing bars can be placed inside the concrete, and shear-resistant members can be installed on the steel pipe wall. This improves the load-bearing capacity and stiffness under temperature stress.
[0047] like Figure 6 As shown, in specific implementation, the truss steel pipe is formed by fixed connection of shaped steel or steel plates; the inner wall of the steel pipe has shear-resistant members 6, which are fixedly connected to the steel pipe.
[0048] Shear-resistant components include studs, reinforcing bars, and structural steel parts, welded together with structural steel or steel plates. Function: To enhance the combined action of concrete and steel pipes, and to facilitate fabrication.
[0049] like Figure 7 As shown, in practical implementation, the truss steel pipe is composed of cold-formed thin-walled steel pipes, and the shear-resistant components are reinforcing bars or bolts that penetrate the steel pipe wall. Function: To enhance the combined effect of the concrete and steel pipes, and to facilitate fabrication.
[0050] like Figure 5 As shown, the reinforced truss A is connected to the column B as a whole. There are two columns B, which are arranged at intervals. The column B is connected to the reinforced truss A to form a reinforced truss structure.
[0051] In practice, at least one straight web member 3.1 is located in the edge area of the truss. Its function is to facilitate force transmission. In practice, the length of the lower chord member 2 is shorter than the length of the upper chord member 1. Its function is to facilitate construction.
[0052] In practice, column B and reinforced truss A are connected by diagonal members, which are steel components and can be arranged on one or both sides. Their function is to further enhance the lateral stiffness of the structure and reduce lateral deformation; to reduce the spacing between the supports of the reinforced truss and thus reduce its deformation.
[0053] In practice, the connection between column B and reinforced truss A is movable. The connection can be made using bolts, movable supports, or specialized connectors. This facilitates the release of temperature stress and reduces stress on the truss and column.
[0054] In practice, column B is a steel column, a steel-concrete composite column, or a steel-concrete composite column.
[0055] In practice, the sealing component 7 with the opening is welded to the truss steel pipe as a whole, and then welded to other steel pipes of the truss. Then, concrete 4 is poured into the steel pipes of the upper chord 1 and / or the lower chord 2 and cured to the predetermined strength.
[0056] In practice, between step one and step two, the shear-resistant component is welded to the inner wall of the steel pipe to form a single unit.
[0057] The above embodiments only illustrate several implementation methods of this patent, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A reinforced truss, characterized in that: The reinforced truss (A) includes an upper chord (1), a lower chord (2), and web members (3); the upper chord (1) is a steel pipe; the steel pipe contains concrete (4); the concrete (4) is locally distributed along the length of the upper chord; the lower chord (2) is a steel pipe or a steel section; the web members (3) are steel sections or steel pipes; the web members (3) include straight web members (3.1) and / or diagonal web members (3.2); the upper chord (1) is fixedly connected to the web members (3); the lower chord (2) is fixedly connected to the web members (3).
2. The reinforced truss according to claim 1, characterized in that: The concrete (4) is partially distributed in the middle of the upper chord (1).
3. The reinforced truss according to claim 1, characterized in that: The concrete (4) contains reinforcing bars (5).
4. The reinforced truss according to claim 1, characterized in that: The steel pipe of the upper chord (1) is formed by fixed connection of steel sections or steel plates; the inner wall of the steel pipe of the upper chord (1) has a shear-resistant member (6), which is fixedly connected to the steel pipe.
5. The reinforced truss according to claim 1, characterized in that: The concrete (4) has a sealing element (7) at its end.
6. The reinforced truss according to claim 1, characterized in that: The lower chord is a steel pipe, and the steel pipe contains concrete (4).
7. A reinforced truss structure, characterized in that: The reinforced truss structure includes the reinforced truss (A) as described in claim 1 and columns (B); there are at least two columns (B) arranged at intervals; the columns (B) are connected to the reinforced truss (A).
8. The reinforced truss structure according to claim 7, characterized in that: At least one straight web member (3.1) is located in the edge region of the truss; the connection between the column (B) and the reinforced truss (A) is movable.
9. The reinforced truss structure according to claim 7, characterized in that: The column (B) is a steel column, a steel-concrete composite column, or a steel-concrete composite column.