CN110130491B - Aluminum alloy beam column joint connected by channel steel reinforced ring groove rivet - Google Patents
Aluminum alloy beam column joint connected by channel steel reinforced ring groove rivet Download PDFInfo
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- CN110130491B CN110130491B CN201910312783.XA CN201910312783A CN110130491B CN 110130491 B CN110130491 B CN 110130491B CN 201910312783 A CN201910312783 A CN 201910312783A CN 110130491 B CN110130491 B CN 110130491B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2448—Connections between open section profiles
Abstract
The invention relates to an aluminum alloy beam column joint connected by a channel steel reinforced ring groove rivet, which comprises: the aluminum alloy I-shaped beam, the aluminum alloy I-shaped column, the angular stainless steel connecting piece, the ring groove rivet and the reinforcing channel steel, wherein the 4 angular stainless steel connecting pieces are arranged at the joint of the beam and the column in pairs, are respectively arranged at the upper flange and the lower flange of the beam and at the two sides of the web plate of the beam and are both connected with the flange of the column, and the 2 pairs of reinforcing channel steel are symmetrically arranged in the flange of the column. The node has the excellent performance of a common beam column node, and can be quickly assembled on a construction site; the method can overcome the problem of strength reduction of the welded joint, solve the problem of electrochemical corrosion of the bolted joint, and ensure that the joint has high bearing capacity, initial rotational rigidity, ductility and deformability. The annular groove rivet can provide higher pretightening force as a novel connecting fastener and is anti-loosening and anti-vibration. The novel node can greatly improve the mechanical property of the aluminum alloy structure and accelerate the construction speed of the aluminum alloy structure.
Description
Technical Field
The invention belongs to the technical field of metal structures in structural engineering, and relates to an assembling and connecting structure of an aluminum alloy structural member.
Background
With the development of aluminum alloy smelting technology in China, aluminum alloy structures gradually become hot spots for research and application in the field of structural engineering. Because of the good corrosion resistance, high specific strength and easy extrusion molding performance of the aluminum alloy, more than 6000 aluminum alloy structures are put into use worldwide, including large-span roof structures, aluminum alloy bridges, high-rise structures and the like. As the aluminum alloy structural member and the overall structure thereof are developed, it will be applied to the frame structure.
The biggest problem faced in using aluminium alloys as structural materials in frame structures is the connection between the members, i.e. the node problem. The welding performance of the aluminum alloy material is poor, and the aluminum alloy material is stipulated in the aluminum alloy structure design specification GB 50429-plus 2007 in China: for two types of aluminum alloy structural materials most commonly used in engineering: the weld heat affected zones of 6061-T6 and 6063-T5 require a 50% reduction in strength. Although chinese patent publications CN201610057712 and CN201610057710 relate to an aluminum alloy beam-column joint, the aluminum alloy bolts mentioned in the above two patents cannot bear a large load and cannot be made into high-strength bolts, and in many academic documents and experiments, it is found that stainless steel bolts often have a snap-in phenomenon and cannot apply reasonable pre-tightening force. Moreover, the above patent adds stiffening ribs on the aluminum alloy post, and this can hardly be done in the aluminum alloy structure because the aluminum alloy can not be welded (the welding reduction strength is very large), and naturally the stiffening ribs can not be set like the steel structure. The columns referred to in the above-mentioned patent comprise box columns, which in practice cannot be connected to the outside by means of bolts (closed cross-section), because there is no construction space, which is a common general knowledge in the field of structural engineering. Finally, the connection of the angle to the column flange is only suitable for the arrangement of a single row of rivets (bolts in the above mentioned patent), since it has been found through experimental and academic studies that: the multiple rows of rivets are not stressed at the same time, and the material is wasted.
Meanwhile, the aluminum alloy material has small elastic modulus, and generates larger deformation relative to a steel structure under the same load, so that the key problem is how to keep higher bearing capacity and initial rigidity of the beam-column node so as to improve the integrity and stability of the structure.
Disclosure of Invention
The invention provides an aluminum alloy beam-column joint connected by a channel steel reinforced ring groove rivet and an installation method thereof, aiming at realizing effective connection of an aluminum alloy beam and a column in a frame structure and solving the problems of insufficient bearing capacity and smaller initial rotational rigidity of an aluminum alloy connection joint.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an aluminum alloy beam column node of channel steel strenghthened type annular rivet connection, includes: the aluminum alloy I-shaped beam is connected with the aluminum alloy column through the angular stainless steel connecting piece, the end face of the aluminum alloy I-shaped beam is in butt joint with the flange of the aluminum alloy column, the upper flange of the I-shaped beam is connected with the flange of the aluminum alloy column through the angular stainless steel connecting piece, the lower flange of the I-shaped beam is connected with the flange of the aluminum alloy column through the angular stainless steel connecting piece, two sides of a web plate of the I-shaped beam are connected with the flange of the aluminum alloy column through the angular stainless steel connecting piece, riveting holes are formed in the connecting positions of the angular stainless steel connecting piece and the I-shaped beam or the column and are connected through the annular groove rivets, a stainless steel reinforcing piece is arranged in the aluminum alloy column, and two ends of the stainless steel reinforcing piece are connected into a whole through the annular groove rivets corresponding to the I-shaped beam and the column.
The aluminum alloy column is an I-shaped column, and the flange is an I-shaped column flange.
The stainless steel reinforcing piece is groove-shaped stainless steel.
Four pieces of groove-shaped stainless steel are arranged in the column, the two sides of a column web plate are respectively installed corresponding to the upper flange and the lower flange of the I-shaped beam, and the groove-shaped stainless steel flanges correspond to the flanges of the I-shaped beam and are connected with the column flanges.
The stainless steel material is selected from austenite.
A method for installing aluminum alloy beam-column joints connected by channel steel reinforced ring groove rivets comprises the steps of punching holes in beam-column joint areas before assembling the joints, further punching angular stainless steel connecting pieces and channel stainless steel, and ensuring that all connecting holes are completely aligned;
further, combining the beam column, the angle stainless steel and the groove type stainless steel according to the assembly position, and using rivets to penetrate through the corresponding riveting holes to perform pre-assembly;
further, locking the ring groove rivet;
assembling the node components in sequence;
the aluminum alloy beam column joint connected by the channel steel reinforced ring groove rivet is assembled.
The order of assembly of the node components is as follows,
riveting the angular stainless steel connecting piece and the lower flange of the I-shaped beam at the position 1,
the angular stainless steel connecting piece and the upper flange of the I-shaped beam are riveted at the position 2,
the angular stainless steel connector is riveted with the post and the channel stainless steel at position 3,
the angled stainless steel connector is riveted with the post and the channel stainless steel at position 4,
riveting the two-angle stainless steel connecting piece and the I-shaped beam web plate at the position 5,
the two-angle stainless steel connecting piece and the column are respectively riveted at the position 6 and the position 7,
the channel stainless steel is riveted to the post at position 8,
the channel stainless steel is riveted to the post at position 9.
The diameter of the ring groove rivet hole is 0.5-1.0 mm larger than that of the ring groove rivet.
Compared with the prior art, the invention has the beneficial effects that:
besides the excellent performances of the common beam-column node, the node comprises the following steps: the assembly can be quickly carried out on the construction site; the method can overcome the strength reduction problem of the welded joint, solve the electrochemical corrosion problem of the bolted joint, and ensure that the joint has high bearing capacity and initial rotational rigidity. The annular groove rivet can provide higher pretightening force as a novel connecting fastener and is anti-loosening and anti-vibration. The novel node can greatly improve the mechanical property of an aluminum alloy structure, accelerate the construction speed of the aluminum alloy structure, and can help to digest the surplus capacity problem of electrolytic aluminum in China when being used in a large amount in engineering.
Drawings
FIG. 1 is a front view of a T-node.
FIG. 2 is a cross node elevation view.
FIG. 3 is a side view of a node.
Fig. 4 is a top view of a node.
Fig. 5 is a schematic view of a channel type stainless steel.
Fig. 6 is a sequence of assembling the respective components of the node.
FIG. 7 is a schematic illustration of a ring groove rivet locking process.
Fig. 8 is a diagram illustrating a riveting sequence.
Reference numerals: 11. an aluminum alloy pillar; 12. an aluminum alloy beam; 13. an angular stainless steel connector; 14. a ring groove rivet; 15. a trough type stainless steel; 21. riveting guns; 22. a rivet stem; 23. a collar; 24. the panel is to be fastened.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail by the accompanying drawings and specific embodiments.
The invention relates to an aluminum alloy beam column node which has high bearing capacity and high initial rotational rigidity, is connected by a ring groove rivet and is reinforced by 2 pairs of groove type stainless steel, and can be widely applied to aluminum alloy frames and even heavy-load aluminum alloy structures.
The invention comprises the following components: aluminum alloy I-shaped beam, aluminum alloy I-shaped column, angular stainless steel connecting piece, groove type stainless steel and ring groove rivet for connecting beam column members. The node can be applied to a T-shaped node (namely, a side column node) or a cross-shaped node (namely, a center column node) according to the position of the node in the frame structure.
The 4 angular stainless steel connecting pieces are arranged at the joint of the beam and the column in pairs, are respectively arranged at the upper flange and the lower flange of the beam and at the two sides of the web plate of the beam and are connected with the flanges of the column. In consideration of matching with the strength of the aluminum alloy structure and the cost, the stainless steel material is preferably selected from austenite. The mechanical property of the joint can be greatly improved by using stainless steel as a connecting piece compared with the aluminum alloy, and according to related experiments, the bearing capacity is improved by more than 30%, and the initial rotational rigidity is improved by more than 10%.
4 channel type stainless steel is the most important structural component of this strenghthened type node, and it has solved because the unsuitable welding of aluminum alloy material and can't set up the problem of stiffener in the node region. The flange of the channel steel can play a role similar to that of the base plate, and the tensile, compression and bending resistance of the flange of the column is enhanced; meanwhile, the web plate of the channel steel can play a role of a node domain stiffening rib in a traditional steel beam column node, and the node domain shear resistance is increasedThe ability to deform. Thickness t of channel steel platebEqual to the thickness of the flange of the column, and the height H of the webcEqual to the height of the column web and the width b of the flange of the channel steelcShould be the same width as the flange of the post. Through experimental study, the node that carries out channel-section steel reinforcement compares in ordinary beam column node, and bearing capacity promotes and reaches more than 20%.
Before the nodes are assembled, firstly, the beam-column node domain is punched. According to the actual diameter and the engineering condition of annular groove rivet, the aperture is generally 0.5 ~ 1.0mm bigger than the diameter of annular groove rivet, because annular groove rivet machining precision is higher, need not reserve too big rivet hole. And then the angle-shaped stainless steel connecting piece and the channel steel are punched, and all the connecting holes are ensured to be completely aligned.
Furthermore, the beam column, the angle stainless steel and the groove type stainless steel are combined according to the assembly position, and rivets penetrate through corresponding bolt holes to be pre-assembled. The pre-assembly can play a role in positioning and check whether the bolt holes which are drilled in advance meet the assembly requirement or not.
Further, locking of the annular groove rivet is carried out. The locking of annular rivet uses is dedicated riveter, and the locking process divide into four steps roughly, and annular rivet locking process is: firstly, a rivet penetrates through a rivet hole of a plate to be fastened and is sleeved with a lantern ring; secondly, inserting a gun mouth of the rivet gun into the tail part of the rivet to enable the rivet gun to be engaged with the threads at the tail part of the rivet; the third step and the fourth step are automatically completed by the rivet gun, the rivet gun automatically breaks the tail part of the rivet backwards after the trigger is pulled, and fastening force between the rivet and the plate is generated by the breaking force.
The order of assembly of the node assemblies is shown in fig. 6. Meanwhile, in order to reduce the loss of the pretightening force of the annular groove rivet, attention should be paid to the rivet locking sequence in the assembling process of each plate, and according to a large number of tests and related research results, the locking sequence of the annular groove rivet is carried out according to the principle of 'center first, two sides later and diagonal angle'.
The order of assembly of the node components is as follows,
riveting the angular stainless steel connecting piece and the lower flange of the I-shaped beam at the position 1,
the angular stainless steel connecting piece and the upper flange of the I-shaped beam are riveted at the position 2,
the angular stainless steel connector is riveted with the post and the channel stainless steel at position 3,
the angled stainless steel connector is riveted with the post and the channel stainless steel at position 4,
riveting the two-angle stainless steel connecting piece and the I-shaped beam web plate at the position 5,
the two-angle stainless steel connecting piece and the column are respectively riveted at the position 6 and the position 7,
the channel stainless steel is riveted to the post at position 8,
the channel stainless steel is riveted to the post at position 9.
The annular groove rivet passing through the flange of the channel steel is changed into a longer annular groove rivet due to the fact that the thickness of the locked plate is increased compared with that of a common node.
So far, the aluminum alloy beam column joint connected by the channel steel reinforced ring groove rivet is assembled.
The joint assembling process can be widely applied to various aluminum alloy frame structures, including single-layer aluminum alloy frames and multi-layer aluminum alloy frames. One end of the aluminum alloy frame column is fixed or connected with the lower layer structure before the node domain is formally assembled.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. An aluminum alloy beam column joint connected by channel steel reinforced ring groove rivets, which consists of an aluminum alloy I-shaped beam, an aluminum alloy I-shaped column, an angular stainless steel connecting piece used for connecting beam column components, channel stainless steel and ring groove rivets, wherein the aluminum alloy I-shaped beam is connected with the aluminum alloy I-shaped column by the angular stainless steel connecting piece, the end surface of the aluminum alloy I-shaped beam is butted with the flange of the aluminum alloy I-shaped column, the upper flange of the I-shaped beam is connected with the flange of the aluminum alloy I-shaped column by the angular stainless steel connecting piece, the lower flange of the I-shaped beam is connected with the flange of the aluminum alloy I-shaped column by the angular stainless steel connecting piece, two sides of a web plate of the I-shaped beam are connected with the flange of the aluminum alloy I-shaped column by the angular stainless steel connecting piece, riveting holes are arranged at the connecting positions of the angular stainless steel connecting piece and the I-shaped, the method is characterized in that: a stainless steel reinforcing piece is arranged in the aluminum alloy I-shaped column, and two ends of the stainless steel reinforcing piece are riveted on the aluminum alloy I-shaped column through rivets of a connecting ring groove of the I-shaped beam and the column;
the stainless steel reinforcing piece is groove-shaped stainless steel; four pieces of groove-shaped stainless steel are arranged in the column, two sides of a column web plate are respectively installed corresponding to the upper flange and the lower flange of the I-shaped beam, and the groove-shaped stainless steel flanges correspond to the flanges of the I-shaped beam and are connected with the column flanges; the web plate of the channel steel plays a role of a node domain stiffening rib in the traditional steel beam column node, and the capability of resisting shear deformation of the node domain is improved; the thickness of channel-section steel plate equals with column flange thickness, and the web height is equal to column web height, and channel-section steel flange width is the same with column flange width.
2. The aluminum alloy beam column joint connected by the channel steel reinforced ring groove rivet according to claim 1, which is characterized in that: the stainless steel material is selected from austenite.
3. The aluminum alloy beam column joint connected by the channel steel reinforced ring groove rivet according to claim 1, which is characterized in that: the diameter of the ring groove rivet hole is 0.5-1.0 mm larger than that of the ring groove rivet.
4. A method for installing a channel steel reinforced ring groove rivet connected aluminum alloy beam column joint according to any one of claims 1 to 3, which comprises the following steps:
before the nodes are assembled, firstly, punching is carried out on the node areas of the beam columns, and then the angle stainless steel connecting pieces and the groove type stainless steel are punched, and all connecting holes are ensured to be completely aligned;
further, combining the beam column, the angle stainless steel and the groove type stainless steel according to the assembly position, and using rivets to penetrate through the corresponding riveting holes to perform pre-assembly;
further, locking the ring groove rivet;
assembling the node components in sequence;
the aluminum alloy beam column joint connected by the channel steel reinforced ring groove rivet is assembled.
5. The method for installing the aluminum alloy beam-column joint connected by the channel steel reinforced ring groove rivet according to claim 4, wherein the method comprises the following steps: the order of assembly of the node components is as follows,
riveting a first angular stainless steel connecting piece and a lower flange of an aluminum alloy I-shaped beam at a position 1, wherein the position 1 is a riveting area of the lower flange of the I-shaped beam;
riveting the second angular stainless steel connecting piece and the upper flange of the aluminum alloy I-shaped beam at a position 2, wherein the position 2 is a riveting area of the upper flange of the I-shaped beam;
riveting the first angular stainless steel connecting piece, the aluminum alloy I-shaped column and the groove-shaped stainless steel at a position 3, wherein the position 3 is a riveting area of a flange at the node area side of the I-shaped column below the I-shaped beam;
riveting the second angular stainless steel connecting piece, the aluminum alloy I-shaped column and the groove-shaped stainless steel at a position 4, wherein the position 4 is a riveting area of a flange on the joint area side of the I-shaped column above the I-shaped beam;
riveting the third and fourth triangular stainless steel connecting pieces and the aluminum alloy I-shaped beam web plate at positions 5, wherein the positions 5 are the front side and the rear side of the web plate of the I-shaped beam at the node area;
riveting a third stainless steel connecting piece, a fourth stainless steel connecting piece and the aluminum alloy I-shaped column at a position 6 and a position 7 respectively, wherein the position 6 is a riveting area on the front side of the middle part of the side flange of the node area of the I-shaped column; the position 7 is a riveting area at the rear side of the middle part of the flange at the side of the node area of the I-shaped column;
riveting the first channel type stainless steel, the second channel type stainless steel and the aluminum alloy I-shaped column at a position 8, wherein the position 8 is a riveting area of the flange of the I-shaped column far away from the node area side on the front side and the rear side above the I-shaped beam;
and riveting the third groove-shaped stainless steel and the fourth groove-shaped stainless steel with the column at a position 9, wherein the position 9 is a riveting area of the flange of the I-shaped column far away from the node area side at the front side and the rear side above the I-shaped beam.
6. The method for installing the aluminum alloy beam-column joint connected by the channel steel reinforced ring groove rivet according to claim 4, wherein the method comprises the following steps: the locking process of the ring groove rivet comprises the following steps: firstly, a rivet penetrates through a rivet hole of a plate to be fastened and is sleeved with a lantern ring; secondly, inserting a gun mouth of the rivet gun into the tail part of the rivet to enable the rivet gun to be engaged with the threads at the tail part of the rivet; the third step and the fourth step are automatically completed by the rivet gun, the rivet gun automatically breaks the tail part of the rivet backwards after the trigger is pulled, and fastening force between the rivet and the plate is generated by the breaking force.
7. The method for installing the aluminum alloy beam-column joint connected by the channel steel reinforced ring groove rivet according to claim 4, wherein the method comprises the following steps: the riveting sequence of the riveting holes is as follows: the center riveting, the two-side riveting and the riveting are carried out along opposite angles.
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