Beam column joint of stainless steel reinforced connection aluminum alloy column in minor axis direction

Abstract

The invention provides a stainless steel reinforced connection beam-column joint in the weak axis direction of an aluminum alloy column, which comprises an aluminum alloy column, an aluminum alloy beam, a stainless steel overhanging reinforced joint domain rib plate connecting piece, a stainless steel high-strength ring groove rivet and a stainless steel column strong axis connecting piece top plate, and is characterized in that the aluminum alloy beam is spliced in the weak axis direction of the section of the aluminum alloy column; the node domain rib plate connecting piece is connected to the flange of the aluminum alloy column through the stainless steel overhanging reinforced node domain rib plate connecting piece; the beam-column joint around the weak axis direction of the column is connected with the aluminum alloy beam and the aluminum alloy column through a stainless steel outward-extending reinforced joint domain rib plate connecting piece; the stainless steel column strong shaft connecting piece top plate is connected to the outer side of the aluminum alloy column flange; stainless steel high-strength ring groove rivets are adopted as fasteners among the aluminum alloy column, the aluminum alloy beam, the stainless steel overhanging reinforced node domain rib plate connecting piece and the stainless steel column strong shaft connecting piece top plate; friction surface treatment is conducted on the contact surfaces of the aluminum alloy and the stainless steel plate, so that it is guaranteed that large roughness exists between the plates, and an anti-sliding coefficient is provided.

Description

Technical Field

[0001] The present invention belongs to the technical field of corrosion-resistant metal structures in structural engineering, and particularly relates to a beam-column joint in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection. Background Art

[0002] Both aluminum alloy and stainless steel materials have good corrosion resistance. Under various working conditions in structural engineering, aluminum alloy structures are excellent substitutes for steel structures. Aluminum alloy materials are light and have good mechanical properties, while stainless steel materials have high strength and good ductility. The combination of the two, using stainless steel connectors to connect aluminum alloy members, is a major development trend in China's frame structures.

[0003] Ring groove rivets have been gradually popularized in structural engineering, but there has been no research and engineering application on tensile stainless steel high-strength ring groove rivets that can replace high-strength bolts. The ordinary ring groove rivets used to connect aluminum alloy members mainly bear shear force before. The tensile bearing capacity and pre-tightening force of this ordinary ring groove rivet cannot meet the requirements of the joint connection for tension. At the same time, the fastening process of ordinary break-off type ring groove rivets will produce a section of waste rivet tail, which affects the construction speed, causes waste of materials, and the process of pulling off the rivet tail will also produce a huge sound and vibration of the plate members, and long-term operation will have a certain impact on the physical and mental health of construction workers.

[0004] Achieving friction type connection is a necessary condition for seismic structures, and there are special requirements for the surface treatment method between aluminum alloy and stainless steel plates. For aluminum alloy structures, it is necessary to ensure a sufficiently large anti-slip coefficient between stainless steel and aluminum alloy plates. However, previous aluminum alloy projects lacked effective anti-slip treatment for the connection contact surfaces of the plates.

[0005] Aluminum alloy materials are not resistant to high temperatures, and welding severely reduces the material. The welding heat influence reduction coefficient of aluminum alloy specified in Chinese and European codes is 0.5. Therefore, the connection of aluminum alloy beam-column joints needs to use connectors. For the connection between the weak axis direction of an aluminum alloy column with an I-shaped cross-section and an aluminum alloy beam with an I-shaped cross-section, it is necessary to make an effective connection through construction on the basis of the beam-column joint structure in the strong axis direction of the column, and at the same time, it is necessary to ensure the requirements of the joint bending bearing capacity and rotational stiffness, and achieve the strengthened connection of the beam flange and web through construction.

[0006] In summary, how to achieve an effective connection of the beam in the weak axis direction of the aluminum alloy frame structure, provide reliable bending bearing capacity, stiffness and seismic performance for the beam-column joint in the weak axis direction of the column, and at the same time make the overall connection structure reasonably stressed and convenient for construction has become an urgent problem to be solved. Summary of the Invention

[0007] In order to overcome a series of defects existing in the prior art, the object of the present invention is to provide a beam-column joint in the weak axis direction of an aluminum alloy column with stainless steel reinforced connection for the above problems, including an aluminum alloy column 1, an aluminum alloy beam 2, a stainless steel extended reinforced joint domain rib plate connector 3, a stainless steel high-strength ring groove rivet 4, and a stainless steel column strong axis connector top plate 5, characterized in that,

[0008] The aluminum alloy beam 2 is spliced in the weak axis direction of the cross-section of the aluminum alloy column 1 and is connected to the flange of the aluminum alloy column 1 through the stainless steel extended reinforced joint domain rib plate connector 3;

[0009] The beam-column joint in the weak axis direction around the column is connected to the aluminum alloy beam 2 and the aluminum alloy column 1 through the stainless steel extended reinforced joint domain rib plate connector 3;

[0010] The stainless steel column strong axis connector top plate 5 is connected to the outside of the flange of the aluminum alloy column 1 and is the top plate of the beam flange connector for the beam-column joint in the strong axis direction of the column, adapting to various connection structure forms;

[0011] The aluminum alloy column 1, the aluminum alloy beam 2, the stainless steel extended reinforced joint domain rib plate connector 3 and the stainless steel column strong axis connector top plate 5 adopt the stainless steel high-strength ring groove rivet 4 as the fastener;

[0012] The contact surfaces of the aluminum alloy and stainless steel plate members are all subjected to friction surface treatment to ensure that there is a large roughness between the plate members to provide a large anti-slip coefficient.

[0013] Preferably, both the aluminum alloy beam 2 and the aluminum alloy column 1 adopt 6061-T6 aluminum alloy with a tensile strength reaching 250 Mpa. Both the aluminum alloy beam 2 and the aluminum alloy column 1 are extruded, and there are 5 mm chamfers on their flanges and webs.

[0014] Preferably, the stainless steel extended reinforced joint domain rib plate connector 3 includes a joint domain attaching plate 301, four stainless steel rib plate connecting plates 302, two extended rib plates 303 and an extended shear plate 304 welded together. Among them,

[0015] The stainless steel rib plate connecting plates 302 are parallel to each other in pairs;

[0016] The extended rib plates 303 are vertically welded in the center of two stainless steel rib plate connecting plates 302. After welding, the stainless steel rib plate connecting plates 302 and the extended rib plates 303 are welded to the joint domain attaching plate 301. The distance between the two extended rib plates 303 is the height of a beam;

[0017] The extended shear plate 304 is vertically welded in the center of the joint domain attaching plate 301;

[0018] The width of the stainless - steel extended - strengthened joint - domain rib - plate connector 3 is equal to the web width of the aluminum alloy column 1, and the width of the extended section of the extended rib - plate 303 is the width of the flange of the aluminum alloy beam 2;

[0019] The stainless - steel rib - plate connecting plate 302, the extended shear plate 304, and the extended sections of the extended rib - plate 303 are all provided with rivet holes 305 with a diameter of 13.5 mm;

[0020] The stainless - steel rib - plate connecting plate 302 is in contact with the inner side of the flange of the aluminum alloy column 1, the extended rib - plate 303 is connected to the flange of the aluminum alloy beam 2, and they are respectively pasted on the outer sides of the upper and lower flanges of the aluminum alloy beam 2. The extended shear plate 304 is connected to the web of the aluminum alloy beam 2, and the distance between the joint - domain attaching plate 301 and the web of the aluminum alloy column 1 is the radius of the chamfer of the flange web of the aluminum alloy column 1.

[0021] Preferably, the width of the top plate 5 of the stainless - steel column strong - axis connector is equal to the width of the stainless - steel rib - plate connecting plate 302, their arranged position heights are equal, the positions of the rivet holes 305 correspond to each other, and they are connected using stainless - steel high - strength ring - groove rivets 4.

[0022] Preferably, the aluminum alloy surfaces in the contact surfaces between the stainless - steel rib - plate connecting plate 302 and the flange of the aluminum alloy column 1, between the extended rib - plate 303 and the flange of the aluminum alloy beam 2, between the extended shear plate 304 and the web of the aluminum alloy beam 2, and between the top plate 5 of the stainless - steel column strong - axis connector and the flange of the aluminum alloy column 1 are all subjected to local sand - blasting treatment;

[0023] The outer side of the stainless - steel rib - plate connecting plate 302 of the stainless - steel extended - strengthened joint - domain rib - plate connector 3, the inner side of the extended rib - plate 303, the side of the extended shear plate 304 in contact with the beam web, and the plate surfaces of the top plate 5 of the stainless - steel column strong - axis connector are subjected to arc - spraying aluminum treatment.

[0024] Preferably, the local sand - blasting method for the aluminum alloy surface is: using a small sand - blaster to sand - blast the area in contact with the stainless - steel plate, ensuring that the measured Ra value reaches 4 μm.

[0025] Preferably, the arc - spraying aluminum treatment method for the stainless - steel surface is: melting the coating material aluminum through an electric current, atomizing it with a high - speed air flow and spraying it out, hitting the substrate and adhering to the substrate surface to form a coating, ensuring that the measured Ra value is not less than 10 μm.

[0026] Preferably, after the surface treatment of the contacting aluminum alloy plate parts and stainless - steel plate parts, a slip - resistance coefficient test is carried out to ensure that the slip - resistance coefficient between the sand - blasted aluminum alloy and the arc - sprayed aluminum stainless - steel test plate parts processed in the same batch as the test pieces is not less than 0.6.

[0027] Preferably, considering the matching of the plate material and the rivet strength, the stainless steel high-strength ring groove rivet 4 uses an M12 short-tail type stainless steel high-strength ring groove rivet 4, with a pre-tightening force reaching 65 kN and a tensile bearing capacity reaching 120 kN.

[0028] Preferably, the fastening steps of the stainless steel high-strength ring groove rivet 4 are as follows: First, pass the stainless steel high-strength ring groove rivet 4 through the rivet hole 305 of the connecting plate and slip on the collar; Second, place the rivet gun jaws on the tail teeth of the ring groove rivet; Third, press the control switch of the rivet gun to make the anvil and the collar move relative to each other to squeeze the collar; Finally, when the riveting tool reaches the set riveting pressure, the sleeve withdraws, and the fastening process of the ring groove rivet is completed.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1) In the present invention, the beam-column joint in the weak axis direction of the aluminum alloy column is formed by extruding the beam and column members through the stainless steel extended reinforced joint domain rib plate connector. While strengthening the web joint domain of the beam-column joint connected to the strong axis of the column, the stainless steel extended reinforced joint domain rib plate connector also provides the transfer of the beam end moment in the weak axis direction of the column, meeting a certain flexural stiffness; The extended rib plate and the extended shear plate of the stainless steel extended reinforced joint domain rib plate connector are respectively connected to the flange and web of the beam, and the joint domain patch plate improves the integrity of the joint connector, and the force is more reasonable; The top plate of the stainless steel column strong axis connector strengthens the column flange, improving the shear bearing capacity of the plate member and the flexural bearing capacity and flexural stiffness of the beam-column joint in the weak axis direction of the column;

[0031] 2) In the present invention, at the connection between the aluminum alloy part and the stainless steel, the surface of the aluminum alloy plate is locally sprayed using a small sandblaster to ensure the roughness of the connection part and also ensure that the bright surface of other parts of the member is not damaged;

[0032] 3) In the present invention, at the connection between the aluminum alloy part and the stainless steel, aluminum is arc-sprayed on the stainless steel surface, achieving a large surface roughness without introducing other materials to affect the overall performance of the structure;

[0033] 4) In the present invention, stainless steel high-strength ring groove rivets are used for the fastening connection between plate members. The stainless steel high-strength ring groove rivets are different from high-strength bolts and ordinary ring groove rivets. They are mechanically installed, with a fast construction speed, and can provide a large pre-tightening force and tensile bearing capacity at the same time;

[0034] 5) In the present invention, the stainless steel high-strength ring groove rivets used are of the short-tail type, which do not generate construction waste, are fast, make no loud noise, and are friendly to construction activities;

[0035] 6) In the present invention, there is a large anti-slip coefficient and a large fastening pre-tightening force between the plate members. The joints use friction-type connections, meeting the requirements of structural earthquake resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is the overall schematic diagram of the present invention;

[0037] Figure 2 is the three-dimensional view of the connection structure of the present invention;

[0038] Figure 3 is the schematic diagram of the extended reinforced joint domain rib plate connector of the present invention;

[0039] Figure 4 is the schematic diagram of the top plate of the column strong axis connector of the present invention;

[0040] Figure 5 is the schematic diagram of the arc spraying principle of the present invention;

[0041] Figure 6 is the schematic diagram of the fastening process of the stainless steel high-strength ring groove rivet of the present invention.

[0042] The reference numerals in the figures are as follows:

[0043] 1 - Aluminum alloy column, 2 - Aluminum alloy beam, 3 - Stainless steel extended reinforced joint domain rib plate connector, 4 - Stainless steel high-strength ring groove rivet, 5 - Stainless steel column strong axis connector top plate; 301 - Joint domain patch plate, 302 - Stainless steel rib plate connecting plate, 303 - Extended rib plate, 304 - Extended shear plate, 305 - Rivet hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] To make the objectives, technical solutions, and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The described embodiments are some, but not all, of the embodiments of the present invention.

[0045] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0046] The embodiments described below with reference to the accompanying drawings and directional terms are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0047] In a broad embodiment of the present invention, a beam-column joint in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection includes an aluminum alloy column 1, an aluminum alloy beam 2, a stainless steel extended reinforced joint domain rib plate connector 3, a stainless steel high-strength ring groove rivet 4, and a stainless steel column strong axis connector top plate 5, and is characterized in that,

[0048] The aluminum alloy beam 2 is spliced in the weak axis direction of the cross-section of the aluminum alloy column 1 and is connected to the flange of the aluminum alloy column 1 through the stainless steel extended reinforced joint domain rib plate connector 3;

[0049] The beam-column joint in the weak axis direction around the column connects the aluminum alloy beam 2 and the aluminum alloy column 1 through the stainless steel extended reinforced joint domain rib plate connector 3;

[0050] The stainless steel column strong axis connector top plate 5 is connected to the outside of the flange of the aluminum alloy column 1 and is the top plate of the beam flange connector for the beam-column joint in the strong axis direction of the column, adapting to various connection structural forms;

[0051] The aluminum alloy column 1, the aluminum alloy beam 2, the stainless steel extended reinforced joint domain rib plate connector 3 and the stainless steel column strong axis connector top plate 5 adopt the stainless steel high-strength ring groove rivet 4 as the fastener;

[0052] The contact surfaces of the aluminum alloy and stainless steel plates are all treated with friction surfaces to ensure that there is a large roughness between the plates to provide a large anti-slip coefficient.

[0053] Preferably, both the aluminum alloy beam 2 and the aluminum alloy column 1 adopt 6061-T6 aluminum alloy with a tensile strength reaching 250 Mpa. Both the aluminum alloy beam 2 and the aluminum alloy column 1 are extruded, and there are 5-mm chamfers on their flanges and webs.

[0054] Preferably, the stainless steel extended reinforced joint domain rib plate connector 3 includes a joint domain attaching plate 301 welded together, four stainless steel rib plate connecting plates 302, two extended rib plates 303 and an extended shear plate 304. Among them,

[0055] The stainless steel rib plate connecting plates 302 are pairwise parallel to each other;

[0056] The extended rib plates 303 are vertically welded in the center of two stainless steel rib plate connecting plates 302. After welding, the stainless steel rib plate connecting plates 302 and the extended rib plates 303 are welded to the joint domain attaching plate 301. The distance between the two extended rib plates 303 is the height of a beam;

[0057] The extended shear plate 304 is vertically welded in the center of the joint domain attaching plate 301;

[0058] The width of the stainless-steel extended and strengthened joint region rib plate connector 3 is equal to the web width of the aluminum alloy column 1, and the width of the extended section of the extended rib plate 303 is the width of the flange of the aluminum alloy beam 2;

[0059] Rivet holes 305 with a diameter of 13.5 mm are arranged on the extended sections of the stainless-steel rib plate connecting plate 302, the extended shear plate 304, and the extended rib plate 303;

[0060] The stainless-steel rib plate connecting plate 302 is in contact with the inner side of the flange of the aluminum alloy column 1, the extended rib plate 303 is connected to the flange of the aluminum alloy beam 2, and they are respectively attached to the outer sides of the upper and lower flanges of the aluminum alloy beam 2. The extended shear plate 304 is connected to the web of the aluminum alloy beam 2, and the distance between the joint region attaching plate 301 and the web of the aluminum alloy column 1 is the radius of the chamfer of the flange web of the aluminum alloy column 1.

[0061] Preferably, the width of the top plate 5 of the stainless-steel column strong-axis connector is equal to the width of the stainless-steel rib plate connecting plate 302, their arranged position heights are equal, the positions of the rivet holes 305 correspond to each other, and they are connected using stainless-steel high-strength ring groove rivets 4.

[0062] Preferably, the aluminum alloy surfaces in the contact surfaces between the stainless-steel rib plate connecting plate 302 and the flange of the aluminum alloy column 1, between the extended rib plate 303 and the flange of the aluminum alloy beam 2, between the extended shear plate 304 and the web of the aluminum alloy beam 2, and between the top plate 5 of the stainless-steel column strong-axis connector and the flange of the aluminum alloy column 1 are all subjected to local sandblasting treatment;

[0063] The outer side of the stainless-steel rib plate connecting plate 302 of the stainless-steel extended and strengthened joint region rib plate connector 3, the inner side of the extended rib plate 303, the side of the extended shear plate 304 in contact with the beam web, and the plate surface of the top plate 5 of the stainless-steel column strong-axis connector are subjected to arc spraying aluminum treatment.

[0064] Preferably, the local sandblasting method for the aluminum alloy surface is: using a small sandblasting machine to sandblast the area in contact with the stainless-steel plate, ensuring that the measured Ra value reaches 4 μm.

[0065] Preferably, the arc spraying aluminum treatment method for the stainless-steel surface is: melting the coating material aluminum through an electric current, atomizing it with a high-speed air flow and spraying it out, hitting the substrate and adhering to the substrate surface to form a coating, ensuring that the measured Ra value is not less than 10 μm.

[0066] Preferably, after the surface treatment of the contacting aluminum alloy plate parts and stainless-steel plate parts, a slip coefficient test is carried out for inspection, ensuring that the slip coefficient between the sandblasted aluminum alloy and the arc-sprayed aluminum stainless-steel test plate parts treated in the same batch as the specimens is not less than 0.6.

[0067] Preferably, considering the matching of the plate material and the rivet strength, the stainless steel high-strength ring groove rivet 4 uses an M12 short-tail type stainless steel high-strength ring groove rivet 4, with a pre-tightening force reaching 65 kN and a tensile bearing capacity reaching 120 kN.

[0068] Preferably, the fastening steps of the stainless steel high-strength ring groove rivet 4 are as follows: First, pass the stainless steel high-strength ring groove rivet 4 through the rivet hole 305 of the connecting plate and slip on the collar; Second, place the rivet gun jaw on the tail teeth of the ring groove rivet; Third, press the control switch of the rivet gun to make the anvil and the collar move relative to each other to squeeze the collar; Finally, when the riveting tool reaches the set riveting pressure, the sleeve withdraws, completing the fastening process of the ring groove rivet.

[0069] The following combines the drawings to list the preferred embodiments of the present invention and further elaborate on the present invention in detail.

[0070] As Figure 1-4 shown, an aluminum alloy beam-column joint connected by a stainless steel extended reinforced joint domain rib plate connector 3 is a sub-structure of an aluminum alloy frame in the weak axis direction of the column, which is composed of an aluminum alloy beam 2 and an aluminum alloy column 1 connected together, with the column passing through and the beam separated. The aluminum alloy beam 2 and the aluminum alloy column 1 are connected by a stainless steel extended reinforced joint domain rib plate connector 3. The stainless steel rib plate connecting plate 302 of the stainless steel extended reinforced joint domain rib plate connector 3 is connected to the column flange, the extended rib plate 303 of the stainless steel extended reinforced joint domain rib plate connector 3 is connected to the inner side of the beam flange, and the extended shear plate 304 of the stainless steel extended reinforced joint domain rib plate connector 3 is connected to the beam web. The stainless steel column strong axis connector top plate 5 is connected to the outside of the column flange. The contact surfaces of the stainless steel extended reinforced joint domain rib plate connector 3, the stainless steel column strong axis connector top plate 5, and the plate components in the connection area of the beam and column are all treated with friction surfaces. The surface treatment method of the stainless steel extended reinforced joint domain rib plate connector 3 and the stainless steel column strong axis connector top plate 5 is arc spraying aluminum, and the surface treatment method of the aluminum alloy plate components is local sandblasting. The plate components are tightly connected by stainless steel high-strength ring groove rivets 4.

[0071] Extrude and cut the aluminum alloy members according to the corresponding lengths, and drill holes in the beam end flange and the column middle flange according to certain connection requirements. The hole diameter is 13.5 mm.

[0072] Punch holes in the stainless steel plate parts of the corresponding size, with the hole diameter being 13.5 mm. Weld the stainless steel rib plate connecting plates 302 and the extended rib plates 303 of the stainless steel extended and strengthened joint domain rib plate connector 3. The extended rib plates 303 are vertically welded between two stainless steel rib plate connecting plates 302, and the weld is located at the center of the stainless steel rib plate connecting plates 302. K-type full penetration groove welding is used. Then, weld the two welded I-shaped extended rib plate 303 connectors to the joint domain backing plate 301. The distance between the two extended rib plates 303 is the height of one beam, as Figure 6 shown. Vertically weld the extended shear plate 304 at the center of the joint domain backing plate 301, using K-type groove welding.

[0073] When performing local sandblasting on the beam and column plate parts in the area connected to the stainless steel extended and strengthened joint domain rib plate connector 3 and the stainless steel column strong axis connector top plate 5, use a handheld small sandblaster, adopt white fused alumina for sandblasting, and set the sandblasting pressure to 0.8 MPa. After sandblasting, use a surface roughness meter to measure the roughness, ensuring that the Ra value is not less than 4 μm, as Figure 5 shown.

[0074] When performing arc spraying aluminum on the surface of the plate parts of the stainless steel extended and strengthened joint domain rib plate connector 3 and the stainless steel column strong axis connector top plate 5 connected to the beam and column, use a surface roughness meter to measure the roughness after arc spraying aluminum, ensuring that the Ra value is not less than 10 μm.

[0075] Conduct a slip coefficient test on the aluminum alloy plate parts and stainless steel plate parts used for the slip test, ensuring that the slip coefficient between the sandblasted aluminum alloy and arc-sprayed aluminum stainless steel test plate parts processed in the same batch as the test pieces is not less than 0.6.

[0076] Place the aluminum alloy beam 2, aluminum alloy column 1, 2 stainless steel extended and strengthened joint domain rib plate connectors 3, and 4 stainless steel column strong axis connector top plates 5 in the Figure 1 position. Fix the aluminum alloy column 1 or first splice it with the lower structure, and then use stainless steel high-strength ring groove rivets 4 for fastening connection. The fastening process is divided into four steps, as Figure 6 shown. The first step is to pass the stainless steel high-strength ring groove rivet 4 through the rivet hole 305 of the connecting plate and put on the collar; the second step is to place the riveting gun claw on the tail tooth of the ring groove rivet; the third step is to press the control switch of the riveting gun to make the anvil and the collar move relative to each other to squeeze the collar; the fourth step is that the riveting tool reaches the set riveting pressure and the sleeve withdraws, completing the fastening process of the stainless steel high-strength ring groove rivet 4.

[0077] The structure and assembly process of this joint can be widely applied in various aluminum alloy frame structures, including single-layer aluminum alloy frames and multi-layer aluminum alloy frames.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A beam-column node in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection, comprising an aluminum alloy column (1), an aluminum alloy beam (2), a stainless steel outwardly reinforced node domain rib plate connector (3), a stainless steel high-strength annular groove rivet (4) and a stainless steel column strong axis connector top plate (5), characterized in that: The aluminum alloy beam (2) is spliced ​​in the weak axis direction of the cross section of the aluminum alloy column (1), and is connected to the flange of the aluminum alloy column (1) through a stainless steel outwardly extended reinforced node domain rib plate connector (3); The beam-column node around the weak axis of the column is connected to the aluminum alloy beam (2) and the aluminum alloy column (1) via a stainless steel outwardly reinforced node domain rib plate connector (3); The top plate (5) of the stainless steel column strong axis connector is connected to the outer side of the flange of the aluminum alloy column (1) and is the top plate of the beam flange connector of the beam-column node in the strong axis direction of the column, and is adaptable to various connection structural forms; Stainless steel high-strength annular groove rivets (4) are used as fasteners between the aluminum alloy column (1), the aluminum alloy beam (2), the stainless steel outwardly reinforced node domain rib plate connector (3) and the stainless steel column strong axis connector top plate (5); The contact surfaces of the aluminum alloy and stainless steel plates are subjected to friction surface treatment to ensure that there is a large roughness between the plates to provide a large anti-slip coefficient.

2. A beam-column node in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection according to claim 1, characterized in that: The aluminum alloy beam (2) and the aluminum alloy column (1) are both made of 6061-T6 aluminum alloy with a tensile strength of 250 MPa. The aluminum alloy beam (2) and the aluminum alloy column (1) are both extruded, and their flanges and webs are chamfered with 5 mm.

3. A beam-column node in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection according to claim 2, characterized in that: The stainless steel outwardly reinforced node rib plate connector (3) comprises a node rib plate (301), four stainless steel rib plate connecting plates (302), two outwardly reinforced rib plates (303) and an outwardly reinforced shear plate (304) which are welded together, wherein: The stainless steel rib connecting plates (302) are parallel to each other; The extended ribs (303) are vertically welded to the center of two stainless steel rib connecting plates (302). The welded stainless steel rib connecting plates (302) and extended ribs (303) are welded to the node domain plate (301). The distance between the two extended ribs (303) is the height of a beam. The extended shear plate (304) is vertically welded to the center of the node area plate (301); The width of the stainless steel outwardly extended reinforced node domain rib plate connector (3) is equal to the web width of the aluminum alloy column (1), and the width of the outwardly extended section of the outwardly extended rib plate (303) is equal to the width of the flange of the aluminum alloy beam (2); The stainless steel rib connecting plate (302), the extended shear plate (304) and the extended section of the extended rib (303) are all provided with rivet holes (305) with a diameter of 13.5 mm; The stainless steel rib connecting plate (302) is in contact with the inner side of the flange of the aluminum alloy column (1), the extended rib plate (303) is connected to the flange of the aluminum alloy beam (2), and is respectively attached to the outer sides of the upper and lower flanges of the aluminum alloy beam (2), the extended shear plate (304) is connected to the web of the aluminum alloy beam (2), and the distance between the node domain plate (301) and the web of the aluminum alloy column (1) is the radius of the chamfer of the flange web of the aluminum alloy column (1).

4. A beam-column node in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection according to claim 3, characterized in that: The width of the top plate (5) of the stainless steel column strong axis connector is equal to the width of the stainless steel rib plate connecting plate (302), the two are arranged at the same height, the positions of the rivet holes (305) correspond, and the stainless steel high-strength ring groove rivets (4) are used for connection.

5. A beam-column node in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection according to claim 4, characterized in that: The aluminum alloy surfaces of the contact surface between the stainless steel rib plate connecting plate (302) and the flange of the aluminum alloy column (1), the contact surface between the extended rib plate (303) and the flange of the aluminum alloy beam (2), the contact surface between the extended shear plate (304) and the web of the aluminum alloy beam (2), and the contact surface between the top plate (5) of the stainless steel column strong axis connector and the flange of the aluminum alloy column (1) are all locally sandblasted; The outer side of the stainless steel rib connecting plate (302) of the stainless steel extended reinforced node domain rib connecting member (3), the side of the inner extended shear plate (304) of the extended rib (303) in contact with the beam web, and the plate surface of the top plate (5) of the stainless steel column strong axis connecting member are subjected to arc spraying aluminum treatment.

6. A beam-column node in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection according to claim 5, characterized in that: The local sandblasting method of the aluminum alloy surface is: use a small sandblasting machine to sandblast the area that contacts the stainless steel plate to ensure that the measured Ra value reaches 4μm.

7. A beam-column node in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection according to claim 5, characterized in that: Arc spraying aluminum treatment method for stainless steel surface is: the coating material aluminum is melted by electric current, atomized and sprayed by high-speed airflow, hits the substrate and adheres to the substrate surface to form a coating, ensuring that the measured Ra value is not less than 10μm.

8. The beam-column node in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection according to claim 5, characterized in that: After surface treatment, the contacting aluminum alloy plates and stainless steel plates are subjected to anti-slip coefficient test to ensure that the anti-slip coefficient between the sandblasted aluminum alloy and arc sprayed aluminum stainless steel test plates processed in the same batch as the test pieces is not less than 0.

6.

9. A beam-column node in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection according to any one of claims 1 to 8, characterized in that: Taking into account the matching of the plate material and the rivet strength, the stainless steel high-strength ring groove rivet (4) uses an M12 short-tail stainless steel high-strength ring groove rivet (4), with a preload force of 65 kN and a tensile bearing capacity of 120 kN.

10. A beam-column node in the weak axis direction of an aluminum alloy column with a stainless steel reinforced connection according to claim 9, characterized in that: The fastening steps of the stainless steel high-strength ring groove rivet (4) are as follows: first, the stainless steel high-strength ring groove rivet (4) is passed through the rivet hole (305) of the connecting plate and inserted into the sleeve; second, the rivet gun claw is placed on the tail tooth of the ring groove rivet; third, the rivet gun control switch is pressed to make the anvil and the sleeve move relative to each other to squeeze the sleeve; finally, the riveting tool reaches the set riveting pressure, the sleeve is withdrawn, and the fastening process of the ring groove rivet is completed.

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