Aluminum alloy-steel contactless combined support embedded node and manufacturing method

Abstract

The present invention discloses an embedded node of an aluminum alloy-steel contactless combined support and a manufacturing method thereof, wherein the embedded node of the support is arranged inside a reinforced concrete main structure; the embedded node of the support consists of a force transmission member and a connecting member; the material of the force transmission member is steel; the material of the connecting member is aluminum alloy; the connecting member is used to connect the aluminum alloy support; the connecting member is embedded in the concrete inside the force transmission member, and the two do not contact each other; the beneficial technical effect of the present invention is: an embedded node of an aluminum alloy-steel contactless combined support and a manufacturing method thereof are proposed, and the scheme can avoid welding operations on heterogeneous metals, and the heterogeneous metals do not contact each other, so as to prevent electrochemical reactions.

Description

Technical Field

[0001] The invention relates to a building component, in particular to an aluminum alloy-steel contactless combined support embedded node and a manufacturing method thereof. Background Art

[0002] With the progress of society, green buildings and building industrialization have gradually become the development trend of the current construction industry. Compared with steel and concrete materials, aluminum alloy materials have many advantages such as good strength, good corrosion resistance, easy processing, easy recycling, etc., and are a new type of building material with broad prospects.

[0003] In the design and construction of houses and other buildings, aluminum alloy structures are not used alone, and they often need to be connected with other materials. In particular, when aluminum alloy supports need to be installed on the main concrete structure, there is generally an embedded steel plate on the top of the concrete structure. The traditional method is to make the aluminum alloy and the embedded steel plate on the top of the concrete structure directly contact each other and connect them by welding. However, there are great differences in the physical properties of steel and aluminum. During the steel-aluminum welding process, many problems such as joint deformation and slag inclusion are prone to occur, which makes the material performance after the steel-aluminum connection lower, and electrochemical corrosion will occur, increasing the difficulty and cost of subsequent maintenance, and also affecting the service life of the structure.

[0004] In the prior art, the connection methods of steel and aluminum mainly include diffusion welding, explosion welding, brazing and other welding methods. There are also many methods to improve steel-aluminum welding, but they all have shortcomings. Therefore, there is an urgent need for a new connection method between aluminum alloy supports and prefabricated steel plates on concrete structures to avoid direct contact between aluminum alloy supports and steel plates and extend the service life of the structure. At the same time, it is also necessary to ensure that the upper aluminum alloy structure is fixed on the concrete structure and transmit pressure, tension and shear force to the concrete structure. Summary of the invention

[0005] In view of the problems in the background technology, the present invention proposes an aluminum alloy-steel contactless combined support embedded node, the innovation of which is that: the support embedded node is arranged inside the reinforced concrete main structure; the support embedded node is composed of a force transmission member and a connecting member; the material of the force transmission member is steel; the material of the connecting member is aluminum alloy; the connecting member is used to connect the aluminum alloy support;

[0006] The force transmission member is composed of a steel bottom plate, a steel pipe and an annular steel plate; the steel bottom plate is embedded in the reinforced concrete main structure, and anchor bars are arranged on the lower end surface of the steel bottom plate; the steel pipe is embedded in the reinforced concrete main structure, and the lower end of the steel pipe is fixedly connected to the upper end surface of the steel bottom plate, and the upper end surface of the steel pipe is fixedly connected to the annular steel plate;

[0007] The connecting piece is composed of an aluminum alloy support connecting plate and an aluminum alloy tube; the upper end of the aluminum alloy tube is open and the lower end is closed; a first bearing plate is arranged on the outer wall of the lower end of the aluminum alloy tube, and a second bearing plate is arranged on the outer wall of the middle part of the aluminum alloy tube;

[0008] The space inside the force transmission member forms an installation cavity, the lower part of the aluminum alloy tube is arranged in the installation cavity, the upper part of the aluminum alloy tube passes through the inner hole of the annular steel plate, and the second force bearing plate is located on the lower side of the annular steel plate; the upper end of the aluminum alloy tube is fixedly connected to the support connecting plate; the outer diameter of the first force bearing plate is larger than the inner hole diameter of the annular steel plate, and the outer diameter of the second force bearing plate is larger than the inner hole diameter of the annular steel plate; there is no contact between the force transmission member and the connecting member, and the space between the force transmission member and the connecting member is filled with concrete; the aluminum alloy support is fixedly connected to the upper end surface of the aluminum alloy support connecting plate.

[0009] The principle of the above scheme is: after adopting the above scheme, the steel force transmission member and the aluminum alloy connecting member are connected as a whole through the concrete body. There is no contact between the force transmission member and the connecting member, electrochemical corrosion will not occur, and there is no need to weld the two materials, which can effectively avoid the negative impact of welding different materials; in addition, the lower part of the connecting member is located in the inner cavity of the force transmission member, and there is an overlapping area between the force bearing plate and the annular steel plate in the axial direction. When the connecting member is subjected to external force, the force can be effectively transmitted to the reinforced concrete main structure to ensure structural stability.

[0010] Based on the above scheme, the present invention also proposes a method for manufacturing a support embedded node. The structure of the support embedded node is as described above. The specific method includes:

[0011] 1) Build the reinforced concrete main structure formwork;

[0012] 2) Set the steel bottom plate connected with anchor bars at the corresponding position; in specific implementation, the steel bottom plate and anchor bars can be connected by perforation plug welding process;

[0013] 3) Set the steel pipe at the corresponding position and fix the lower end of the steel pipe to the upper end surface of the steel bottom plate; during implementation, the steel pipe and the steel bottom plate can be welded together;

[0014] 4) Place a concrete pad on the upper end surface of the steel bottom plate, then place the connector on the concrete pad, then set the annular steel plate at the corresponding position, and fix the lower end surface of the annular steel plate to the upper end surface of the steel pipe; in specific implementation, the annular steel plate and the steel pipe can be welded together;

[0015] 5) Pour concrete into the reinforced concrete main structure template and the installation cavity. After the concrete solidifies, the embedded node of the support is completed. When in use, the aluminum alloy support bottom plate is connected to the aluminum alloy support connecting plate. In specific implementation, the aluminum alloy support bottom plate and the aluminum alloy support connecting plate can be connected by welding or bolts. To facilitate the flow of concrete, multiple through holes can be set on the bearing plate.

[0016] Compared with the prior art, the welding operations in the aforementioned method are all performed on the same material, and there is no need to weld different materials. The operation is less difficult and can effectively avoid problems encountered when welding different materials. In addition, the method is simple to operate and can effectively improve construction efficiency and reduce construction costs.

[0017] The beneficial technical effect of the present invention is: an aluminum alloy-steel contactless combined support embedded node and a manufacturing method are proposed, which can avoid welding operations on heterogeneous metals, and the heterogeneous metals do not contact each other, which can prevent electrochemical reactions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 , a schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 2 , schematic diagram of the connecting tube structure;

[0020] Figure 3 , a schematic diagram of a half-section structure of the present invention;

[0021] The names corresponding to the various marks in the figure are: steel base plate 1, steel pipe 2, annular steel plate 3, aluminum alloy support connecting plate 4, aluminum alloy pipe 5, first bearing plate 51, second bearing plate 52, anchor bar 6. DETAILED DESCRIPTION

[0022] An aluminum alloy-steel contactless combined bearing embedded node, the innovation of which is: the bearing embedded node is arranged inside the reinforced concrete main structure; the bearing embedded node is composed of a force transmission member and a connecting member; the material of the force transmission member is steel; the material of the connecting member is aluminum alloy; the connecting member is used to connect the aluminum alloy bearing;

[0023] The force transmission member is composed of a steel bottom plate 1, a steel pipe 2 and an annular steel plate 3; the steel bottom plate 1 is pre-buried inside the reinforced concrete main structure, and an anchor bar 6 is provided on the lower end surface of the steel bottom plate 1; the steel pipe 2 is pre-buried inside the reinforced concrete main structure, and the lower end of the steel pipe 2 is fixedly connected to the upper end surface of the steel bottom plate 1, and the upper end surface of the steel pipe 2 is fixedly connected to the annular steel plate 3;

[0024] The connecting piece is composed of an aluminum alloy support connecting plate 4 and an aluminum alloy tube 5; the aluminum alloy tube 5 is open at the upper end and closed at the lower end; a first bearing plate 51 is arranged on the outer wall of the lower end of the aluminum alloy tube 5, and a second bearing plate 52 is arranged on the outer wall of the middle part of the aluminum alloy tube 5;

[0025] The space inside the force transmission member forms an installation cavity, the lower part of the aluminum alloy tube 5 is arranged in the installation cavity, the upper part of the aluminum alloy tube 5 passes through the inner hole of the annular steel plate 3, and the second force bearing plate 52 is located on the lower side of the annular steel plate 3; the upper end of the aluminum alloy tube 5 is fixedly connected to the support connecting plate 4; the outer diameter of the first force bearing plate 51 is larger than the inner hole diameter of the annular steel plate 3, and the outer diameter of the second force bearing plate 52 is larger than the inner hole diameter of the annular steel plate 3; there is no contact between the force transmission member and the connecting member, and the space between the force transmission member and the connecting member is filled with concrete; the aluminum alloy support is fixedly connected to the upper end surface of the aluminum alloy support connecting plate 4.

[0026] A method for manufacturing a pre-embedded support node, wherein the pre-embedded support node is arranged inside a reinforced concrete main structure; the pre-embedded support node is composed of a force transmission member and a connecting member; the material of the force transmission member is steel; the material of the connecting member is aluminum alloy; the connecting member is used to connect the aluminum alloy support;

[0027] The force transmission member is composed of a steel bottom plate 1, a steel pipe 2 and an annular steel plate 3; the steel bottom plate 1 is pre-buried inside the reinforced concrete main structure, and an anchor bar 6 is provided on the lower end surface of the steel bottom plate 1; the steel pipe 2 is pre-buried inside the reinforced concrete main structure, and the lower end of the steel pipe 2 is fixedly connected to the upper end surface of the steel bottom plate 1, and the upper end surface of the steel pipe 2 is fixedly connected to the annular steel plate 3;

[0028] The connecting piece is composed of an aluminum alloy support connecting plate 4 and an aluminum alloy tube 5; the aluminum alloy tube 5 is open at the upper end and closed at the lower end; a first bearing plate 51 is arranged on the outer wall of the lower end of the aluminum alloy tube 5, and a second bearing plate 52 is arranged on the outer wall of the middle part of the aluminum alloy tube 5;

[0029] The space inside the force transmission member forms an installation cavity, the lower part of the aluminum alloy tube 5 is arranged in the installation cavity, the upper part of the aluminum alloy tube 5 passes through the inner hole of the annular steel plate 3, and the second bearing plate 52 is located at the lower side of the annular steel plate 3; the upper end of the aluminum alloy tube 5 is fixedly connected to the support connecting plate 4; the outer diameter of the first bearing plate 51 is larger than the inner hole diameter of the annular steel plate 3, and the outer diameter of the second bearing plate 52 is larger than the inner hole diameter of the annular steel plate 3; there is no contact between the force transmission member and the connecting member, and the space between the force transmission member and the connecting member is filled with concrete; the aluminum alloy support is fixedly connected to the upper end surface of the aluminum alloy support connecting plate 4;

[0030] The innovation thereof lies in that the method comprises:

[0031] 1) Build the reinforced concrete main structure formwork;

[0032] 2) Setting the steel base plate 1 connected with the anchor bars 6 at the corresponding position;

[0033] 3) The steel pipe 2 is arranged at a corresponding position, and the lower end of the steel pipe 2 is fixedly connected to the upper end surface of the steel bottom plate 1;

[0034] 4) Place a concrete pad on the upper end surface of the steel bottom plate 1, then place the connector on the concrete pad, then set the annular steel plate 3 at the corresponding position, and fix the lower end surface of the annular steel plate 3 to the upper end surface of the steel pipe 2;

[0035] 5) Pour concrete into the reinforced concrete main structure template and the installation cavity. After the concrete solidifies, the embedded node of the support is completed. When in use, the aluminum alloy support bottom plate is connected to the aluminum alloy support connecting plate 4.

Claims

1. An aluminum alloy-steel contactless combined support embedded node, characterized in that: The support embedded node is arranged inside the reinforced concrete main structure; the support embedded node is composed of a force transmission member and a connecting member; the material of the force transmission member is steel; the material of the connecting member is aluminum alloy; the connecting member is used to connect the aluminum alloy support; The force transmission member is composed of a steel bottom plate (1), a steel pipe (2) and an annular steel plate (3); the steel bottom plate (1) is pre-buried inside the reinforced concrete main structure, and an anchor bar (6) is provided on the lower end surface of the steel bottom plate (1); the steel pipe (2) is pre-buried inside the reinforced concrete main structure, and the lower end of the steel pipe (2) is fixedly connected to the upper end surface of the steel bottom plate (1), and the upper end surface of the steel pipe (2) is fixedly connected to the annular steel plate (3); The connecting piece is composed of an aluminum alloy support connecting plate (4) and an aluminum alloy tube (5); the aluminum alloy tube (5) is open at the upper end and closed at the lower end; a first bearing plate (51) is provided on the outer wall of the lower end of the aluminum alloy tube (5), and a second bearing plate (52) is provided on the outer wall of the middle part of the aluminum alloy tube (5); The space inside the force transmission member forms an installation cavity, the lower part of the aluminum alloy tube (5) is arranged in the installation cavity, the upper part of the aluminum alloy tube (5) passes through the inner hole of the annular steel plate (3), and the second force bearing plate (52) is located on the lower side of the annular steel plate (3); the upper end of the aluminum alloy tube (5) is fixedly connected to the support connecting plate (4); the outer diameter of the first force bearing plate (51) is larger than the inner hole diameter of the annular steel plate (3), and the outer diameter of the second force bearing plate (52) is larger than the inner hole diameter of the annular steel plate (3); the force transmission member and the connecting member are not in contact, and the space between the force transmission member and the connecting member is filled with concrete; the aluminum alloy support is fixedly connected to the upper end surface of the aluminum alloy support connecting plate (4).

2. A method for manufacturing a pre-embedded support node, wherein the pre-embedded support node is arranged inside a reinforced concrete main structure; the pre-embedded support node is composed of a force transmission member and a connecting member; the material of the force transmission member is steel; the material of the connecting member is aluminum alloy; the connecting member is used to connect the aluminum alloy support; The force transmission member is composed of a steel bottom plate (1), a steel pipe (2) and an annular steel plate (3); the steel bottom plate (1) is pre-buried inside the reinforced concrete main structure, and an anchor bar (6) is provided on the lower end surface of the steel bottom plate (1); the steel pipe (2) is pre-buried inside the reinforced concrete main structure, and the lower end of the steel pipe (2) is fixedly connected to the upper end surface of the steel bottom plate (1), and the upper end surface of the steel pipe (2) is fixedly connected to the annular steel plate (3); The connecting piece is composed of an aluminum alloy support connecting plate (4) and an aluminum alloy tube (5); the aluminum alloy tube (5) is open at the upper end and closed at the lower end; a first bearing plate (51) is provided on the outer wall of the lower end of the aluminum alloy tube (5), and a second bearing plate (52) is provided on the outer wall of the middle part of the aluminum alloy tube (5); The space inside the force transmission member forms an installation cavity, the lower part of the aluminum alloy tube (5) is arranged in the installation cavity, the upper part of the aluminum alloy tube (5) passes through the inner hole of the annular steel plate (3), and the second bearing plate (52) is located on the lower side of the annular steel plate (3); the upper end of the aluminum alloy tube (5) is fixedly connected to the support connecting plate (4); the outer diameter of the first bearing plate (51) is larger than the inner hole diameter of the annular steel plate (3), and the outer diameter of the second bearing plate (52) is larger than the inner hole diameter of the annular steel plate (3); the force transmission member and the connecting member are not in contact, and the space between the force transmission member and the connecting member is filled with concrete; the aluminum alloy support is fixedly connected to the upper end surface of the aluminum alloy support connecting plate (4); Features: The method comprises: 1) Build the reinforced concrete main structure formwork; 2) placing the steel base plate (1) connected with the anchor bars (6) at a corresponding position; 3) placing the steel pipe (2) at a corresponding position and fixing the lower end of the steel pipe (2) to the upper end surface of the steel bottom plate (1); 4) placing a concrete pad on the upper end surface of the steel base plate (1), then placing the connecting piece on the concrete pad, then arranging the annular steel plate (3) at a corresponding position, and fixing the lower end surface of the annular steel plate (3) to the upper end surface of the steel pipe (2); 5) Concrete is poured into the reinforced concrete main structure formwork and the installation cavity. After the concrete solidifies, the pre-embedded node of the support is completed. When in use, the aluminum alloy support bottom plate is connected to the aluminum alloy support connecting plate (4).

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