CN112681608B - Cold-formed thin-wall hollow I-shaped steel - Google Patents
Cold-formed thin-wall hollow I-shaped steel Download PDFInfo
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- CN112681608B CN112681608B CN202011543150.9A CN202011543150A CN112681608B CN 112681608 B CN112681608 B CN 112681608B CN 202011543150 A CN202011543150 A CN 202011543150A CN 112681608 B CN112681608 B CN 112681608B
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Abstract
The invention relates to the technical field of sectional materials, in particular to a cold-formed thin-wall hollow I-shaped steel which comprises an I-shaped steel assembly and reinforcing parts, wherein the I-shaped steel assembly comprises an upper wing plate and a lower wing plate, the upper wing plate and the lower wing plate are identical in specification and are fixedly connected through fixing screws, and the reinforcing parts are arranged on two sides of the I-shaped steel assembly. After the two wing plate parts are assembled, the long web and the short web form the integral hollow web framework of the hollow I-beam, so that the problem that the hollow web framework is concave and convex is solved by the connecting plates, the bearing plates and the inserting plates in the two wing plate parts, the bearing capacity of the hollow I-beam is enhanced, the upper wing plate part and the lower wing plate part slide left and right after being inserted with each other, and the upper wing plate part and the lower wing plate part can form a Z-shaped hollow I-beam, so that the adjacent hollow I-beams can be mutually clamped when being spliced, and the connection convenience and the clamping fastness of the hollow I-beam are further improved.
Description
Technical Field
The invention relates to the technical field of profiles, in particular to a cold-formed thin-wall hollow I-shaped steel.
Background
The i-steel is also called a steel Beam (english name Universal Beam) and is a long steel having an i-shaped cross section. The i-beams are mainly divided into common i-beams, light i-beams and wide-flange i-beams. The wide-flange I-steel is divided into wide-flange I-steel, medium-flange I-steel and narrow-flange I-steel according to the height ratio of the flange to the web. The former two are produced in a specification of 10-60, i.e. the corresponding height is 10-60 cm. Under the same height, the light I-shaped steel has narrow flange, thin web and light weight. The wide flange I-steel is also called H-shaped steel, and its section features that its two legs are parallel and there is no slope in the inner side of the legs. It belongs to the economic section steel, is rolled on a four-roller universal rolling mill, and is also called universal I-steel. Ordinary I-steel and light I-steel have already formed the national standard.
The traditional I-steel section is formed by assembling two C-shaped steel backs to backs. When the bearing capacity of the cold-formed thin-wall steel member is increased, but the appearance size of the section cannot be changed due to the limitation of building design, the bearing capacity can be increased only by increasing the thickness of the steel plate. In order to ensure the processing quality of the cold-bending section and reduce the processing cost (steel with overlarge thickness is easy to have brittle fracture in the cold-bending process), the wall thickness of a cold-bending thin-wall steel structure member is not required to be larger than 6mm according to the provisions in the technical specification GB50018-2002 of the cold-bending thin-wall steel structure in China, and adjacent I-shaped steels are difficult to splice in an actual building platform, so that the mutual carrying is difficult, and the welding or screw fixing of the adjacent I-shaped steels is easy to have dislocation, so that the welding error is large.
Therefore, the cold-formed thin-walled hollow i-section steel has been proposed to solve the above problems.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a cold-formed thin-wall hollow I-shaped steel.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a hollow I-steel of cold-formed thin wall, includes I-steel subassembly and reinforcement, the I-steel subassembly includes wing plate spare and lower wing plate spare, upper wing plate spare and lower wing plate spare specification are the same and through set screw fixed connection, and a plurality of is used for improving I-steel subassembly intensity the reinforcement is installed in the both sides of I-steel subassembly.
The utility model discloses a wing plate spare is including pterygoid lamina, well cavity, long web, short web, connecting plate, loading board, insert and establish board and waist type hole, the middle part fixed mounting on pterygoid lamina surface has parallel arrangement's long web and short web, and fixed mounting has the connecting plate between long web and the short web, the long web fixed mounting of connecting plate below has the loading board, and the inner wall fixed mounting that long web is close to the bottom inserts and establish the board, a plurality of relative waist type hole has all been seted up on connecting plate, loading board and the both sides of inserting and establishing the board.
Specifically, go up the pterygoid lamina still includes well cavity, well cavity is seted up on the pterygoid lamina, and the fixed gomphosis of cavity intracavity has a plurality of parallel distribution's support bar.
Specifically, the distance between the connecting plate and the bearing plate is 0.1-0.2cm larger than the thickness of the inserted plate.
Specifically, the distance between the long web and the short web is the same as the board width of the insertion board.
Specifically, the inserting plate in the upper wing plate piece is inserted into a gap between the connecting plate in the lower wing plate piece and the bearing plate and penetrates through the waist-shaped hole through a fixing screw to be fixedly connected, and the inserting plate in the lower wing plate piece is inserted into a gap between the connecting plate in the upper wing plate piece and the bearing plate and penetrates through the waist-shaped hole through a fixing screw to be fixedly connected.
Specifically, the reinforcement includes trapezoidal seat, erects piece and block groove, trapezoidal seat internal fixation gomphosis has integrated into one piece's the piece of erectting, and erects and has seted up block groove on the piece, the both sides wall of trapezoidal seat respectively with the web in the pterygoid lamina spare and the fixed welding of pterygoid lamina.
The invention has the beneficial effects that:
1. according to the cold-formed thin-wall hollow I-beam, after the two wing plate parts are assembled, the long web and the short web form the integral hollow web framework of the hollow I-beam, so that the transverse stress of the hollow web framework is improved by the connecting plates, the bearing plates and the inserting plates in the two wing plate parts, the problem that the hollow web framework is concave and convex is effectively avoided, and the bearing capacity of the hollow I-beam is enhanced;
2. according to the cold-formed thin-wall hollow I-shaped steel, the upper wing plate part and the lower wing plate part are separately transported, so that the required strength during transportation is reduced, and the transportation speed is increased;
3. according to the cold-formed thin-wall hollow I-beam, two wing plate parts can be flexibly spliced in an actual building platform, and after the upper wing plate part and the lower wing plate part are inserted into each other, the upper wing plate part and the lower wing plate part can slide left and right, so that the upper wing plate part and the lower wing plate part can form a Z-shaped hollow I-beam, therefore, adjacent hollow I-beams can be mutually clamped and connected in a carrying mode when being spliced, the convenience and the clamping firmness of hollow I-beam connection are further improved, and the problem that welding errors are large due to the fact that adjacent I-beams are easy to misplace during welding or screw fixing is also avoided.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the overall structure of a preferred embodiment of a cold-formed thin-walled hollow I-beam according to the present invention;
FIG. 2 is a second schematic view of the overall structure of a preferred embodiment of a cold-formed thin-walled hollow I-beam according to the present invention;
FIG. 3 is a schematic structural view of the upper fender component of FIG. 1;
FIG. 4 is a schematic structural view of the reinforcement member shown in FIG. 1;
fig. 5 is a schematic front view of the structure shown in fig. 1.
In the figure: 1. the structure comprises an I-shaped steel assembly, 11, an upper wing plate member, 111, wing plates, 112, a hollow cavity, 113, a long web, 114, a short web, 115, a connecting plate, 116, a bearing plate, 117, an inserting plate, 118, a waist-shaped hole, 12, a lower wing plate member, 2, a fixing screw, 3, a reinforcing member, 31, a trapezoidal seat, 32, an erecting block, 33, a clamping groove, 4 and a supporting strip.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 5, the cold-formed thin-walled hollow i-steel of the present invention comprises an i-steel assembly 1 and a reinforcement 3, wherein the i-steel assembly 1 comprises an upper wing plate member 11 and a lower wing plate member 12, and the upper wing plate member 11 and the lower wing plate member 12 have the same specification and are fixedly connected by a fixing screw 2.
In the specific implementation process, as shown in fig. 1, 2 and 3, the upper wing plate 11 includes a wing plate 111, a hollow cavity 112, a long web 113, a short web 114, a connecting plate 115, a bearing plate 116, an insertion plate 117 and a kidney-shaped hole 118, the long web 113 and the short web 114 are fixedly installed in the middle of the surface of the wing plate 111 in parallel, the connecting plate 115 is fixedly installed between the long web 113 and the short web 114, the bearing plate 116 is fixedly installed on the long web 113 below the connecting plate 115, the insertion plate 117 is fixedly installed on the inner wall of the long web 113 near the bottom, a plurality of opposite kidney-shaped holes 118 are respectively opened on both sides of the connecting plate 115, the bearing plate 116 and the insertion plate 117, the distance between the connecting plate 115 and the bearing plate 116 is 0.1-0.2cm greater than the thickness of the insertion plate 117, the distance between the long web 113 and the short web 114 is the same as the plate width of the insertion plate 117, and the insertion plate 117 in the upper wing plate 11 is inserted into the gap between the connecting plate 115 and the lower wing plate 116 in the wing plate 12 and passes through the bearing plate fixing hole The set screw 2 is fixedly connected through the kidney-shaped hole 118, and the insertion plate 117 in the lower wing plate member 12 is inserted into the gap between the connection plate 115 in the upper wing plate member 11 and the bearing plate 116 and is fixedly connected through the kidney-shaped hole 118 by the set screw 2.
It should be noted that: when the hollow I-steel is conveyed, the upper wing plate piece 11 and the lower wing plate piece 12 are separately conveyed, so that the required strength during conveying is reduced, and the conveying speed is increased; when the hollow I-beam is used and assembled, the inserting plate 117 in the upper wing plate 11 is inserted into the gap between the connecting plate 115 and the bearing plate 116 in the lower wing plate 12 and fixedly connected through the waist-shaped hole 118 by the fixing screw 2, and the inserting plate 117 in the lower wing plate 12 is inserted into the gap between the connecting plate 115 and the bearing plate 116 in the upper wing plate 11 and fixedly connected through the waist-shaped hole 118 by the fixing screw 2, so that the long web 113 and the short web 114 in the two wing plates form the integral hollow web framework of the hollow I-beam, and therefore the connecting plate 115, the bearing plate 116 and the inserting plate 117 in the two wing plates improve the transverse stress of the hollow web framework, effectively avoid the problem that the hollow web framework is concave and convex, and strengthen the bearing capacity of the hollow I-beam.
And in the actual assembling process: according to the practical building platform, the two wing plate pieces can be flexibly spliced, after the upper wing plate piece 11 and the lower wing plate piece 12 are inserted into each other, the upper wing plate piece and the lower wing plate piece can slide left and right (the sliding range can correspond to the waist-shaped hole 118 on the intermediate plates between the upper wing plate piece and the lower wing plate piece to the maximum extent), so that the upper wing plate piece 11 and the lower wing plate piece 12 can form a Z-shaped hollow I-shaped steel, adjacent hollow I-shaped steels can be clamped mutually when spliced, the convenience and the clamping firmness of hollow I-shaped steel connection are further improved, and the problem that welding errors are large due to the fact that adjacent I-shaped steels are easily staggered during welding or screw fixation is also avoided.
The upper wing plate 11 further includes a hollow cavity 112, the hollow cavity 112 is disposed on the wing plate 111, and a plurality of support bars 4 distributed in parallel are fixedly embedded in the hollow cavity 112, so as to improve the carrying capacity of the wing plate 111.
Referring to fig. 4 and 5, a plurality of reinforcing members 3 for improving the strength of the i-steel assembly 1 are installed at two sides of the i-steel assembly 1, each reinforcing member 3 includes a trapezoidal seat 31, an erecting block 32 and a clamping groove 33, the integrally formed erecting block 32 is fixedly embedded in the trapezoidal seat 31, the erecting block 32 is provided with the clamping groove 33, and two side walls of the trapezoidal seat 31 are respectively fixedly welded with a web plate and a wing plate in a wing plate.
It should be noted that: the trapezoidal seat 31 improves the connection fixity of the web plate and the wing plate in the wing plate, and the clamping groove 33 formed in the erection block 32 is convenient for other steel materials to be mounted and welded on the erection block 32, so that the convenience is improved.
The principle of the cold-formed thin-wall hollow I-shaped steel provided by the invention is as follows:
when the hollow I-steel is conveyed, the upper wing plate piece 11 and the lower wing plate piece 12 are separately conveyed, so that the required strength during conveying is reduced, and the conveying speed is increased; when the hollow I-beam is used and assembled, the inserting plate 117 in the upper wing plate 11 is inserted into the gap between the connecting plate 115 and the bearing plate 116 in the lower wing plate 12 and fixedly connected with the waist-shaped hole 118 through the fixing screw 2, and the inserting plate 117 in the lower wing plate 12 is inserted into the gap between the connecting plate 115 and the bearing plate 116 in the upper wing plate 11 and fixedly connected with the waist-shaped hole 118 through the fixing screw 2, so that the long web 113 and the short web 114 in the two wing plates form the hollow web framework of the hollow I-beam whole body, and therefore the connecting plate 115, the bearing plate 116 and the inserting plate 117 in the two wing plates improve the transverse stress of the hollow web framework, effectively avoid the problem of concave-convex of the hollow web framework, strengthen the bearing capacity of the hollow I-beam, and flexibly splice the two wing plates according to an actual building platform, after the upper wing plate 11 and the lower wing plate 12 are inserted with each other, can the horizontal slip, thereby go up wing plate spare 11 and lower wing plate spare 12 and can constitute the hollow I-steel of a "Z" style of calligraphy, thereby adjacent hollow I-steel is when the concatenation, can carry on the joint each other, the convenience and the joint fastness that hollow I-steel is connected have further been improved, the problem that adjacent I-steel welding or fix with screw misplace easily and lead to welding error big has also been avoided simultaneously, and trapezoidal seat 31 has improved the fixity that web and pterygoid lamina in the pterygoid lamina spare are connected on the one hand, on the other hand erects the block groove 33 that piece 32 was seted up, so that other steel carry on the welding and erect on piece 32, the convenience has been improved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The cold-formed thin-wall hollow I-steel is characterized by comprising the following components:
the I-steel assembly (1) comprises an upper wing plate piece (11) and a lower wing plate piece (12), wherein the upper wing plate piece (11) and the lower wing plate piece (12) have the same specification and are fixedly connected through a fixing screw (2);
the reinforcing pieces (3) are used for improving the strength of the I-steel assembly (1), and the reinforcing pieces (3) are arranged on two sides of the I-steel assembly (1);
the upper wing plate part (11) comprises a wing plate (111), a hollow cavity (112), a long web plate (113), a short web plate (114), a connecting plate (115), a bearing plate (116), an inserting plate (117) and a waist-shaped hole (118), wherein the long web plate (113) and the short web plate (114) which are arranged in parallel are fixedly installed in the middle of the surface of the wing plate (111), the connecting plate (115) is fixedly installed between the long web plate (113) and the short web plate (114), the bearing plate (116) is fixedly installed on the long web plate (113) below the connecting plate (115), the inserting plate (117) is fixedly installed on the inner wall, close to the bottom, of the long web plate (113), and a plurality of opposite waist-shaped holes (118) are formed in two sides of the connecting plate (115), the bearing plate (116) and the inserting plate (117);
the inserting plate (117) in the upper wing plate piece (11) is inserted into a gap between the connecting plate (115) in the lower wing plate piece (12) and the bearing plate (116) and penetrates through the waist-shaped hole (118) through the fixing screw (2) for fixed connection, and the inserting plate (117) in the lower wing plate piece (12) is inserted into a gap between the connecting plate (115) in the upper wing plate piece (11) and the bearing plate (116) and penetrates through the waist-shaped hole (118) through the fixing screw (2) for fixed connection.
2. The cold-formed thin-walled hollow i-steel of claim 1, wherein: the upper wing plate piece (11) further comprises a hollow cavity (112), the hollow cavity (112) is formed in the wing plate (111), and a plurality of support bars (4) which are distributed in parallel are fixedly embedded in the hollow cavity (112).
3. The cold-formed thin-walled hollow i-steel according to claim 1, characterized in that: the distance between the connecting plate (115) and the bearing plate (116) is 0.1-0.2cm larger than the thickness of the inserting plate (117).
4. The cold-formed thin-walled hollow i-steel of claim 1, wherein: the distance between the long web (113) and the short web (114) is the same as the board width of the inserted board (117).
5. The cold-formed thin-walled hollow i-steel of claim 1, wherein: the reinforcing piece (3) comprises a trapezoidal seat (31), an erecting block (32) and a clamping groove (33), the integrally formed erecting block (32) is embedded into the trapezoidal seat (31) in a fixed mode, the clamping groove (33) is formed in the erecting block (32), and two side walls of the trapezoidal seat (31) are respectively fixedly welded with a web plate and a wing plate in a wing plate.
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| CN202011543150.9A CN112681608B (en) | 2020-12-22 | 2020-12-22 | Cold-formed thin-wall hollow I-shaped steel |
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| CN202011543150.9A CN112681608B (en) | 2020-12-22 | 2020-12-22 | Cold-formed thin-wall hollow I-shaped steel |
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| CN112681608B true CN112681608B (en) | 2022-07-05 |
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| CN114192944B (en) * | 2021-12-28 | 2023-09-22 | 江苏新蓝天钢结构有限公司 | Full penetration back-gouging-free I-steel welding method introducing welding pre-deformation |
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