CN205421713U - Last circular down rectangle edge of a wing steel reinforced concrete complex carrier bar that excels in - Google Patents

Abstract

The utility model discloses a last circular down rectangle edge of a wing steel reinforced concrete complex carrier bar that excels in mainly relates to steel construction building spandrel girder field. Including top flange, lower flange and web, the top flange includes outer circular steel pipe, be equipped with the concrete filling body rather than suiting in the circular steel pipe, the lower flange includes outer rectangle steel pipe, be equipped with the 2nd concrete filling body rather than suiting in the rectangle steel pipe, the web includes a plurality of steel sheet and circular steel tube that set up in turn, be equipped with the 3rd concrete filling body rather than suiting in the circular steel tube, top flange, web and lower flange be welded connection in proper order. The utility model has the advantages of load -carrying properties, resistance to compression and the anti -bending strength of carrier bar are effectively improved to it, not only there is apparent promotion to holistic stability, strengthens its bending resistance, antitorque, anti deformability moreover greatly.

Description

A steel-concrete composite high-strength load-bearing beam with upper circular lower rectangular flange

technical field

The utility model relates to the field of steel structure building load-bearing beams, in particular to a steel-concrete composite high-strength load-bearing beam with an upper circular lower rectangular flange.

Background technique

At present, with the rapid development of economy and society, the construction industry is advancing by leaps and bounds. People have higher and higher requirements for load-bearing components in building structures. They not only put forward higher requirements for load-bearing strength, but also continue to pursue lower consumables. and cost.

In the traditional construction industry, the load-bearing beams in general steel structures are mostly in the form of hot-rolled I-beams, hot-rolled or welded H-beams, hot-rolled square steel pipes, welded corrugated web girders, and welded box girders. Among them, if hot-rolled I-beams, hot-rolled or welded H-beams and welded corrugated web girders are used, straight steel plates or corrugated steel plates are used as webs, because the out-of-plane bending resistance of straight steel plates and corrugated steel plates is poor Therefore, the stability, bending resistance and torsional performance of the above-mentioned load-bearing beams are weak, and cannot meet the requirements of some special high-bearing structures. If the out-of-plane bending resistance of the web is improved by increasing the thickness of the web, the amount of steel used for the load-bearing beam will be greatly increased, and the self-weight of the load-bearing beam will also be increased, resulting in waste of steel and increased cost.

In addition, in terms of structure, when the upper flange of the I-beam in the prior art bears the concentrated load transmitted by the secondary beam, local yield damage or local buckling deformation will occur, which seriously affects the safety performance of the overall structure. At the same time, due to the diversity of modern building construction design, the top side of the upper flange needs to adapt to structures of different shapes, and the top surface of the upper flange is generally flat, which has poor adaptability.

Utility model content

The purpose of this utility model is to provide a steel-concrete composite high-strength load-bearing beam with a circular upper flange and a lower rectangular flange. The combination can effectively improve the load-bearing performance, compressive resistance and bending resistance of the load-bearing beam; and the web support of the composite structure not only significantly improves the overall stability, but also greatly enhances its bending, torsion and deformation resistance.

The utility model realizes above-mentioned purpose by following technical scheme:

A steel-concrete composite high-strength load-bearing beam with an upper circular lower rectangular flange, including an upper flange, a lower flange and a web, the upper flange includes an outer circular steel pipe, and the circular steel pipe is provided with a Compatible with the first concrete filling body, the lower flange includes an outer rectangular steel pipe, and the rectangular steel pipe is provided with a second concrete filling body adapted to it, and the web includes a plurality of alternately arranged steel plates and A round steel pipe, the third concrete filling body adapted to it is arranged inside the round steel pipe, and the upper flange, the web and the lower flange are sequentially welded and connected.

The diameter of the circular steel pipe is 1/2-3/4 of the width of the lower flange, and the wall thickness of the circular steel pipe is 5.0mm-10.0mm.

The rectangular steel pipe is a rolled steel pipe, the aspect ratio of the rectangular steel pipe is 1/2, and the wall thickness of the rectangular steel pipe is 6.0mm-18.0mm.

The round steel pipe is a seamless hot-rolled structural steel pipe with a wall thickness of 6.0 mm to 12.0 mm, the diameter of the round steel pipe is 5/8 to 7/8 of the width of the lower flange, and the steel plate is a rolled structure Steel plate and its thickness is 6.0mm～18.0mm.

The steel plate is connected to the round steel pipe by fillet welding, and the upper flange, the web and the lower flange are sequentially connected by fillet welding.

Compared with the prior art, the beneficial effects of the utility model are:

1. The upper flange adopts a circular structure to enhance the load-bearing of the top, and can adapt to the diversified top structure design of the building.

The round steel pipe and the third concrete filling body in the inner layer can effectively improve the overall stability of the web, and enhance its bending resistance, shear resistance, torsion resistance and deformation resistance.

The lower flange is a rectangular structure, which makes the whole more solid and stable.

The arrangement of the first concrete filling body, the second concrete filling body and the third concrete filling body can effectively reduce the processing cost.

In summary, the utility model has the advantages of good load-bearing performance, high safety factor, and durable compression, and the structural characteristics of steel tube composite concrete make it easy to realize standardized control of design and quality, large-scale operation of production, and series of products The optimized layout is conducive to improving production efficiency, saving production and construction costs, and obtaining better economic benefits on the premise of ensuring the strength of components.

2. The size setting of the above circular steel pipe, rectangular steel pipe, round steel pipe and steel plate takes into account the cost of consumables and the optimal range of load-bearing strength.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model.

Accompanying drawing 2 is the transverse sectional view of the utility model.

Accompanying drawing 3 is the A-A sectional view of accompanying drawing 2 of the present utility model.

Accompanying drawing 4 is the B-B sectional view of accompanying drawing 2 of the utility model.

Accompanying drawing 5 is the C-C sectional view of accompanying drawing 2 of the present utility model.

Labels shown in the accompanying drawings:

1. Upper flange; 11. Round steel pipe; 12. First concrete filling body;

2. Lower flange; 21. Rectangular steel pipe; 22. Second concrete filling body;

3. Web plate; 31. Steel plate; 32. Round steel pipe; 33. The third concrete filling body.

detailed description

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

The utility model describes a steel-concrete composite high-strength load-bearing beam with an upper circular lower rectangular flange. The main structure includes an upper flange 1, a lower flange 2 and a web 3. The upper flange 1 includes an outer circle Shaped steel pipe 12 adopts a circular structure to enhance the load-bearing of the top, and can adapt to the diversified top structure design of the building. The circular steel pipe 12 is provided with a first concrete filling body 13 corresponding thereto, and the lower flange 2 includes an outer rectangular steel pipe 21, and the rectangular structure makes the whole more solid and stable. The rectangular steel pipe 21 is provided with a second concrete filling body 22 adapted to it, and the web 3 includes a plurality of alternately arranged steel plates 31 and round steel pipes 32, which can effectively improve the overall stability of the web 3 and enhance its Resistance to bending, shearing, torsion and deformation. The round steel pipe 32 is provided with a third concrete filling body 33 corresponding thereto. The arrangement of the first concrete filling body 13 , the second concrete filling body 22 and the third concrete filling body 33 can effectively reduce the processing cost. The upper flange 1, the web 3 and the lower flange 2 are connected by welding in sequence.

To sum up, compared with the traditional I-beam, the utility model has better overall stability, higher bearing capacity, stronger bending resistance, shear resistance, torsion resistance and deformation resistance. At the same time, the high-strength load-bearing beam can effectively improve the safety performance of the structure under the premise of reducing costs. The process of processing the steel-concrete combined upper flange and composite web is simple, can realize standardized design and factory production, and has good economy and practicability.

The diameter of the circular steel pipe 11 is 1/2-3/4 of the width of the lower flange 2, and the wall thickness of the circular steel pipe 11 is 5.0mm-10.0mm. The rectangular steel pipe 21 is a rolled steel pipe, the aspect ratio of the rectangular steel pipe 21 is 1/2, and the wall thickness of the rectangular steel pipe 21 is 6.0mm˜18.0mm. The round steel pipe 32 is a seamless hot-rolled structural steel pipe with a wall thickness of 6.0 mm to 12.0 mm. The diameter of the round steel pipe 32 is 5/8 to 7/8 of the width of the lower flange 2. The steel plate 31 It is a rolled structural steel plate 31 with a thickness of 6.0 mm to 18.0 mm. The design of the above-mentioned dimensions has undergone repeated engineering tests, and has sufficient durable compression resistance and resistance to deformation, and saves production costs.

The steel plate 31 is connected to the round steel pipe 32 by fillet welding, and the upper flange 1 , the web 3 and the lower flange 2 are connected by fillet welding in sequence.

Embodiment 1: The utility model describes a steel-concrete composite high-strength load-bearing beam with an upper circular lower rectangular flange. The main structure includes an upper flange 1, a lower flange 2 and a web 3. The lower flange 2 and the The width of the upper flange 1 corresponds. The upper flange 1 includes an outer circular steel pipe 12, the diameter of which is 1/2 of the lower flange 2, and the wall thickness of the circular steel pipe 12 is 8.0 mm. The circular steel pipe 12 is provided with a first concrete filling body 13 corresponding thereto, and the lower flange 2 includes an outer rectangular steel pipe 21, the rectangular steel pipe 21 is a rolled steel pipe, and the rectangular steel pipe 21 The aspect ratio is 1/2, and the wall thickness of the rectangular steel pipe 21 is 15.0 mm. The rectangular steel pipe 21 is provided with a second concrete filling body 22 adapted to it. The web 3 includes a plurality of alternately arranged steel plates 31 and round steel pipes 32. The steel plates 31 are connected to the round steel pipes 32 by fillet welding. The weld strength should not be lower than the yield strength of the steel plate 31. The steel plate 31 is a rolled structural steel plate 31 and its thickness is 16 mm. The round steel pipe 32 is a seamless hot-rolled structural steel pipe and its wall thickness is 10.0 mm. The diameter of the round steel pipe 32 is the width of the lower flange 2 3/4 of that, the round steel pipe 32 is provided with a third concrete filling body 33 corresponding thereto, and the upper flange 1, web 3 and lower flange 2 are sequentially connected by fillet welding. The fillet weld strength should not be lower than the yield strength of steel plate 31.

Claims (5)

1. A steel-concrete composite high-strength load-bearing beam with an upper circular lower rectangular flange, comprising an upper flange (1), a lower flange (2) and a web (3), characterized in that: the upper flange (1 ) includes an outer circular steel pipe (11), the circular steel pipe (11) is provided with a first concrete filling body (12) adapted to it, and the lower flange (2) includes an outer rectangular steel pipe (21), the rectangular steel pipe (21) is provided with a second concrete filling body (22) adapted to it, and the web (3) includes a plurality of alternately arranged steel plates (31) and round steel pipes (32) , the round steel pipe (32) is provided with a third concrete filling body (33) adapted to it, and the upper flange (1), web (3) and lower flange (2) are sequentially welded and connected. 2. A steel-concrete composite high-strength load-bearing beam with an upper circular lower rectangular flange according to claim 1, characterized in that: the diameter of the circular steel pipe (11) is 1/2 of the width of the lower flange (2) ~3/4, the wall thickness of the round steel pipe (11) is 5.0mm~10.0mm. 3. A steel-concrete composite high-strength load-bearing beam with upper circular lower rectangular flange according to claim 1, characterized in that: the rectangular steel pipe (21) is a rolled steel pipe, and the height and width of the rectangular steel pipe (21) The ratio is 1/2, and the wall thickness of the rectangular steel pipe (21) is 6.0 mm to 18.0 mm. 4. A steel-concrete composite high-strength load-bearing beam with an upper circular lower rectangular flange according to claim 1, characterized in that: the round steel pipe (32) is a seamless hot-rolled structural steel pipe and its wall thickness is 6.0mm ～12.0mm, the diameter of the round steel pipe (32) is 5/8～7/8 of the width of the lower flange (2), the steel plate (31) is a rolled structural steel plate (31) and its thickness is 6.0mm ~18.0mm. 5. A steel-concrete composite high-strength load-bearing beam with an upper circular lower rectangular flange according to claim 1, characterized in that: the steel plate (31) is connected to the round steel pipe (32) by fillet welding, and the upper flange ( 1), the web (3) and the lower flange (2) are connected by fillet welding in sequence.