A combined structure and construction method

Abstract

The application discloses a combined structure and a construction method, and the combined structure comprises a stand column and a transverse component, the stand column comprises a steel pipe, concrete, a lower end plate, an upper end plate and an upper connecting plate, the concrete is located in the steel pipe, the lower end plate is fixedly connected with the steel pipe, the upper end plate is fixedly connected with the steel pipe, the upper connecting plate is fixedly connected with the upper end plate, and the stand column is connected with the transverse component. The application has the advantages of large lateral rigidity and small deformation.

Description

Technical Field

[0001] This invention belongs to the field of structural technology, and specifically relates to a composite structure and its construction method. Background Technology

[0002] Photovoltaics plays a vital role in my country's energy development. Solar photovoltaic (PV) brackets are specialized supports designed for placing, installing, and securing solar panels in 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 typically used to support them, and the columns are usually steel pipe columns. The maximum cross-sectional dimension of the columns is typically no greater than 350mm. This structure must bear the weight of the PV panels, purlins, trusses, wind loads, temperature effects, and seismic forces. However, this structure suffers from drawbacks such as low column stiffness and significant deformation. Summary of the Invention

[0003] This invention provides a combined structure and construction method to achieve the goal of improving the rigidity of structural columns and reducing deformation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A composite structure, characterized in that: the composite structure includes columns and horizontal members; the columns include steel pipes, concrete, a lower end plate, an upper end plate, and an upper connecting plate; the concrete is located inside the steel pipe; the lower end plate is fixedly connected to the steel pipe; the upper end plate is fixedly connected to the steel pipe; the upper connecting plate is fixedly connected to the upper end plate; the columns are connected to the horizontal members.

[0006] Preferably, the concrete is continuous and in contact with both the lower and upper end plates; reinforcing steel is embedded within the concrete.

[0007] Preferably, the steel pipe is formed by fixed connection of shaped steel or steel plates; the inner wall of the steel pipe has shear-resistant members, which are fixedly connected to the steel pipe.

[0008] Preferably, the steel pipe is a cold-formed thin-walled steel pipe, and the steel pipe has tie bars that are connected to the steel pipe.

[0009] Preferably, the lower end plate has an opening.

[0010] Preferably, there is a stiffening plate between the lower end plate and the steel pipe and / or a stiffening plate between the upper end plate and the steel pipe.

[0011] Preferably, the transverse members are trusses; the trusses include top chords, bottom chords, and web members; the top chords are steel pipes or structural steel; the bottom chords are steel pipes or structural steel; the web members are structural steel or steel pipes; the web members include straight web members and / or diagonal web members; the top chords are fixedly connected to the web members; the bottom chords are fixedly connected to the web members.

[0012] Preferably, the transverse members are steel beams; the steel beams are solid-web I-shaped steel beams or honeycomb beams.

[0013] Preferably, there are at least two columns, spaced apart; the columns and the horizontal members are connected as one unit. The connection between the columns and the horizontal members is movable.

[0014] Preferably, the upper connecting plate is connected to the connector, and the connector is connected to the truss.

[0015] A construction method for a composite structure, comprising the following steps:

[0016] Step 1: Prepare materials according to design requirements: steel pipes, concrete, structural steel, steel plates, and reinforcing bars;

[0017] Step 2: Fabricate transverse structural trusses or steel beams

[0018] When the horizontal member is a truss, the steps are as follows:

[0019] 1) Lay out the lines, cut the steel pipes or sections, and process them into the upper chord, lower chord, and web members, according to the predetermined shape and length;

[0020] 2) Weld the top chord, bottom chord, and web members into a single truss;

[0021] When the horizontal member is a steel beam, the steps are as follows:

[0022] 1) Laying out and cutting steel sections and / or steel plates to process steel beams into the desired shapes and lengths;

[0023] 2) Weld the structural steel and / or steel plates into a single integral steel beam;

[0024] Step 3: Constructing steel-concrete composite columns

[0025] 1) Laying out the lines, cutting steel pipes and plates,

[0026] 2) Process the steel pipe, lower end plate, upper end plate, and upper connecting plate to the predetermined shape and length;

[0027] 3) Weld the lower end plate and the steel pipe, weld the upper end plate and the steel pipe, and weld the upper connecting plate to the upper end plate;

[0028] 4) Pour concrete through the opening in the lower end plate;

[0029] 5) Cure the concrete to the predetermined strength. Alternatively, depending on construction needs, pour the concrete first, and then weld the lower end plate and / or the upper end plate.

[0030] Step 4: Install columns and trusses

[0031] 1) Lay out the horizontal lines and position the column at the predetermined horizontal position;

[0032] 2) Adjust the verticality and elevation of the columns until they meet the design requirements;

[0033] 3) Connect the column to the foundation;

[0034] 4) Horizontal positioning: Place the truss in the predetermined horizontal position;

[0035] 5) Adjust the verticality and elevation of the truss until the design requirements are met;

[0036] 6) Connect the truss to the columns.

[0037] Compared with the prior art, the present invention has the following characteristics and beneficial effects.

[0038] 1. Concrete is poured inside the column to form a composite structure, which increases the stiffness of the column, thereby increasing the lateral stiffness of the structure and reducing the lateral deformation of the structure.

[0039] 2. The transverse members are trusses or cellular beams, which further increases the lateral stiffness of the structure and reduces lateral deformation;

[0040] 3. The connection between the truss and the column is movable, which can release temperature stress, reduce the stress on the truss and column, and reduce lateral deformation;

[0041] 4. The steel pipe of the column is equipped with studs, shear-resistant components or end components, which enable the concrete and steel pipe to work together; the steel pipe is reinforced with steel bars to reduce the shrinkage and creep of the concrete and steel pipe.

[0042] 5. Pour concrete from the bottom end plate to make the concrete bond more tightly with the top end plate. Attached Figure Description

[0043] The present invention will now be described in further detail with reference to the accompanying drawings.

[0044] Figure 1 Schematic diagram of the composite structure elevation Figure 1 .

[0045] Figure 2 Column elevation diagram Figure 1 .

[0046] Figure 3 Column elevation diagram Figure 2 .

[0047] Figure 4 Column elevation diagram Figure 3 .

[0048] Figure 5 Schematic diagram of the composite structure elevation Figure 2 .

[0049] Figure 6 Column cross section Figure 1 .

[0050] Figure 7 Column cross section Figure 2 .

[0051] Figure 8 Schematic diagram of the lower end plate.

[0052] Attached reference numerals: A-Column, B-Transverse member, B1-Upper chord, B2-Lower chord, B3-Web member, B3.1-Straight web member, 1-Steel pipe, 2-Concrete, 3-Lower end plate, 4-Upper end plate, 5-Upper connecting plate, 6-Shear member, 7-Tie bar, 8-Opening, 9-Reinforcing bar.

[0053] To better understand the purpose, technical solution, and function of this invention, the invention will be described in further detail below with reference to the accompanying drawings. Here, illustrative embodiments and their descriptions are used to explain the invention, but are not intended to limit the invention.

[0054] In the description of this invention, it should be understood that the terms "comprising / including," "consisting of," or any other variations thereof are intended to cover a 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, where 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.

[0055] In this invention, 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] The implementation of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0057] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown. A composite structure includes a column A and a transverse member B. The column A includes a steel pipe 1, concrete 2, a lower end plate 3, an upper end plate 4, and an upper connecting plate 5. The concrete 2 is located inside the steel pipe 1. The lower end plate 3 is fixedly connected to the steel pipe 1, the upper end plate 4 is fixedly connected to the steel pipe 1, and the upper connecting plate 5 is fixedly connected to the upper end plate 4. The column A is connected to the transverse member B.

[0058] The structural mechanism is as follows: the steel pipe and concrete form a concrete-steel tube column, increasing the column's stiffness and load-bearing capacity. This, in turn, improves the overall lateral stiffness of the structure. The concrete filling inside the steel pipe prevents or reduces corrosion of the inner wall. The upper and lower end plates of the steel pipe ensure that the concrete and steel pipe share the load.

[0059] In practice, concrete 2 is continuous and in contact with the lower end plate 3 and the upper end plate 4; reinforcing bars 9 are installed inside concrete 2. Function: The reinforcing bars embedded within the concrete reduce shrinkage and creep of the concrete, improving the combined effect of the steel pipe and the concrete.

[0060] In practice, the cross-sectional dimensions of steel pipe 1 range from 80mm to 400mm. Its function is to improve the quality of concrete pouring. The wall thickness of the steel pipe ranges from 3mm to 18mm, which enhances its corrosion resistance.

[0061] In practice, concrete 2 is either self-compacting concrete or grout. Its purpose is to improve the quality of concrete pouring.

[0062] In practice, steel pipe 1 is formed by fixedly connecting structural steel or steel plates; the inner wall of steel pipe 1 has shear-resistant members 6, which are fixedly connected to steel pipe 1. The shear-resistant members are studs, reinforcing bars, or structural steel. Their function is to enhance the shear bearing capacity of the interface between the steel pipe and concrete.

[0063] In practical implementation, the reinforcing bar 9 includes longitudinal and transverse bars, with the longitudinal bars fixedly connected to the lower end plate 3. Its function is to enhance the bottom bending capacity and improve the bearing capacity and stiffness under temperature stress.

[0064] In practice, steel pipe 1 is a cold-formed thin-walled steel pipe, and steel pipe 1 has tie bars 7, which are connected to steel pipe 1. Function: To reduce steel pipe welding, and the tie bars enhance the combined effect of the concrete and the steel pipe.

[0065] In practice, a stiffening plate is installed between the lower end plate 3 and the steel pipe 1, and / or between the upper end plate 4 and the steel pipe 1. Function: To increase local stiffness and improve force transmission.

[0066] In practical implementation, the transverse member B is a truss, which includes an upper chord B1, a lower chord B2, and web members B3. The upper chord B1 is a steel pipe or structural steel, the lower chord B2 is a steel pipe or structural steel, and the web members B3 are structural steel or steel pipes. The web members B3 include straight web members B3.1 and / or diagonal web members B3.2. The upper chord B1 and web members B3 are fixedly connected, and the lower chord B2 and web members B3 are fixedly connected. Function: The transverse member, being a truss, enhances the overall rigidity of the structure.

[0067] In practice, the transverse component B is a steel beam; the steel beam is a solid-web I-shaped steel beam or a honeycomb beam. Its purpose is to facilitate fabrication and construction.

[0068] In practice, there should be at least two columns A, spaced apart; columns A and horizontal members B should be connected as a single unit. The connection between columns A and horizontal members B is movable. Function: To release temperature deformation and reduce temperature-induced stress.

[0069] In practice, the upper connecting plate 5 is connected to the connector 8, and the connector 8 is connected to the truss B. Purpose: To facilitate manufacturing.

[0070] In practice, the outside of the steel pipe 1 is covered with concrete or cement mortar to improve the corrosion resistance of the steel pipe concrete column.

[0071] In practice, column A and transverse member B 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 transverse members and reduce their deformation.

[0072] like Figure 8 As shown, in specific implementation, the lower end plate 3 has an opening 8. Its function is to facilitate concrete pouring, ensuring the concrete at the top of the column is dense.

[0073] A construction method for a composite structure, comprising the following steps:

[0074] Step 1: Prepare materials according to design requirements: steel pipes, concrete, structural steel, steel plates, and reinforcing bars;

[0075] Step 2: Fabricate the transverse component B truss or steel beam.

[0076] When the horizontal member B is a truss, the steps are as follows:

[0077] 1) Lay out the lines, cut the steel pipes or sections, and process them to the upper chord B1, lower chord B2, and web members B3, according to the predetermined shape and length;

[0078] 2) Weld the upper chord B1, lower chord B2, and web member B3 into a single integral truss B;

[0079] When the horizontal member B is a steel beam, the steps are as follows:

[0080] 1) Laying out and cutting steel sections and / or steel plates to process steel beams into the desired shapes and lengths;

[0081] 2) Weld the structural steel and / or steel plates into a single integral steel beam;

[0082] Step 3: Constructing Steel-Pipe Concrete Column A

[0083] 1) Laying out the lines, cutting steel pipes and plates,

[0084] 2) Process steel pipe 1, lower end plate 3, upper end plate 4, and upper connecting plate 5 to the predetermined shape and length;

[0085] 3) Weld the lower end plate 3 and the steel pipe 1, weld the upper end plate 4 and the steel pipe 1, and weld the upper connecting plate 5 to the upper end plate 4.

[0086] 4) Pour concrete 2 through the opening 8 in the lower end plate 3;

[0087] 5) Cure the concrete to the predetermined strength.

[0088] Alternatively, depending on construction needs, concrete 2 can be poured first, followed by welding of the lower end plate 3 and / or the upper end plate 4.

[0089] Step 4: Install column A and truss B

[0090] 1) Lay out the horizontal lines and position the column A at the predetermined horizontal position;

[0091] 2) Adjust the verticality and elevation of column A until the design requirements are met;

[0092] 3) Connect column A to the foundation;

[0093] 4) Horizontal positioning: Place truss B in the predetermined horizontal position;

[0094] 5) Adjust the verticality and elevation of truss B until the design requirements are met;

[0095] 6) Connect truss B to column A.

[0096] 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 inventive concept, and these all fall within the protection scope of this invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A composite structure, characterized in that: The combined structure includes a column (A) and a transverse member (B); the column (A) includes a steel pipe (1), concrete (2), a lower end plate (3), an upper end plate (4), and an upper connecting plate (5); the concrete (2) is located inside the steel pipe (1); the lower end plate (3) is fixedly connected to the steel pipe (1); the upper end plate (4) is fixedly connected to the steel pipe (1); the upper connecting plate (5) is fixedly connected to the upper end plate (4); the column (A) is connected to the transverse member (B).

2. The combined structure according to claim 1, characterized in that: The concrete (2) is continuous and in contact with the lower end plate (3) and the upper end plate (4); the concrete (2) contains reinforcing bars (9).

3. The combined structure according to claim 1, characterized in that: The steel pipe (1) is formed by fixed connection of shaped steel or steel plate; the inner wall of the steel pipe (1) has a shear-resistant member (6), which is fixedly connected to the steel pipe (1).

4. The combined structure according to claim 1, characterized in that: The steel pipe (1) is a cold-formed thin-walled steel pipe, and the steel pipe (1) has tie bars (7), which are connected to the steel pipe (1).

5. The combined structure according to claim 1, characterized in that: The lower end plate (3) has an opening (8).

6. The combined structure according to claim 1, characterized in that: There is a stiffening plate between the lower end plate (3) and the steel pipe (1) and / or there is a stiffening plate between the upper end plate (4) and the steel pipe (1).

7. The combined structure according to claim 1, characterized in that: The transverse member (B) is a truss; the truss includes an upper chord (B1), a lower chord (B2), and web members (B3); the upper chord (B1) is a steel pipe or a steel section; the lower chord (B2) is a steel pipe or a steel section; the web members (B3) are steel sections or steel pipes; the web members (B3) include straight web members (B3.1) and / or diagonal web members (B3.2); the upper chord (B1) is fixedly connected to the web members (B3); the lower chord (B2) is fixedly connected to the web members (B3).

8. The combined structure according to claim 1, characterized in that: The transverse member (B) is a steel beam; the steel beam is a solid-web "I"-shaped steel beam or a honeycomb beam.

9. The combined structure according to claim 1, characterized in that: There are at least two uprights (A) arranged at intervals; the uprights (A) are connected to the transverse members (B) as a single unit. The connection between the uprights (A) and the transverse members (B) is movable.

10. The combined structure according to claim 1, characterized in that: The upper connecting plate (5) is connected to the connector (8), and the connector (8) is connected to the truss (B).

11. A construction method for a composite structure, characterized in that, The construction steps are as follows: Step 1: Prepare materials according to design requirements: steel pipes, concrete (4), structural steel, steel plates, and reinforcing bars; Step 2: Fabricate transverse components (B) trusses or steel beams When the horizontal member (B) is a truss, the steps are as follows: 1) Lay out the lines, cut the steel pipes or sections, and process them to the upper chord (B1), lower chord (B2), and web members (B3) according to the predetermined shape and length; 2) Weld the top chord (B1), bottom chord (B2), and web members (B3) into a single integral truss (B); When the horizontal member (B) is a steel beam, the steps are as follows: 1) Laying out and cutting steel sections and / or steel plates to process steel beams into the desired shapes and lengths; 2) Weld the structural steel and / or steel plates into a single integral steel beam; Step 3: Constructing the steel-concrete composite column (A) 1) Laying out the lines, cutting steel pipes and plates, 2) Process the steel pipe (1), lower end plate (3), upper end plate (4), and upper connecting plate (5) to the predetermined shape and length; 3) Weld the lower end plate (3) and the steel pipe (1), weld the upper end plate (4) and the steel pipe (1), and weld the upper connecting plate (5) to the upper end plate (4); 4) Pour concrete (2) through the opening (8) in the lower end plate (3); 5) Cure the concrete to the predetermined strength. Alternatively, depending on the construction needs, concrete (2) may be poured first, followed by welding of the lower end plate (3) and / or the upper end plate (4). Step 4: Install the columns (A) and trusses (B). 1) Lay out the horizontal lines and position the column (A) at the predetermined horizontal position; 2) Adjust the verticality and elevation of the column (A) until the design requirements are met; 3) Connect the column (A) to the foundation; 4) Horizontal positioning: Place the truss (B) in the predetermined horizontal position; 5) Adjust the verticality and vertical elevation of truss (B) until the design requirements are met; 6) Connect the truss (B) to the column (A).

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