CN214738733U - Increase girder steel and concrete slab integrated configuration of building clear height - Google Patents
Increase girder steel and concrete slab integrated configuration of building clear height Download PDFInfo
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- CN214738733U CN214738733U CN202120236432.8U CN202120236432U CN214738733U CN 214738733 U CN214738733 U CN 214738733U CN 202120236432 U CN202120236432 U CN 202120236432U CN 214738733 U CN214738733 U CN 214738733U
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Abstract
The utility model relates to a steel beam and concrete slab composite structure for increasing the building clear height, which comprises an I-shaped steel beam, a concrete floor slab, shear keys and stiffening rib plates; the plurality of I-shaped steel beams are spliced to form a steel frame structure as a main beam and a secondary beam, and the plurality of stiffening rib plates are arranged on two sides of a web plate of each I-shaped steel beam and are welded and fixed with the web plate and the flange plate of the I-shaped steel beam; the concrete floor is arranged with violently indulging crisscross floor reinforcing bar in the concrete floor, and the side reason of concrete floor is connected on steel frame construction's I-shaped steel beam, just concrete floor all sets up the shear key with I-shaped steel beam hookup location, shear key one end is flat with I-shaped steel beam lower limb board top, and the other end is flat with concrete floor lower surface end, dispose shear reinforcing bar in the shear key. The combined structure not only can solve the problem of insufficient building height reconstruction, but also has the advantages of convenient and rapid construction, low manufacturing cost, easy popularization and the like.
Description
Technical Field
The utility model relates to an old building transformation field, in particular to increase girder steel and concrete slab integrated configuration of building clear height.
Background
In the transformation and reinforcement process, the steel structure is widely applied due to the advantages of high construction speed, simple construction process, small component size and the like, generally, the building is built by adding steel columns and steel beams, then concrete floors are poured on the steel beams, for the transformation type buildings, the building year is long, the net height generally hardly meets the design requirements, and therefore the difficulty of designing is how to utilize the net height to the maximum extent.
For a conventional steel structure building, a common floor slab is arranged on the upper portion of a steel beam, the shearing resistance requirement between the floor slab and the steel beam is met by welding shearing resistant studs on the steel beam, therefore, the net height occupied by a structural part is the sum of the beam height and the plate thickness, the plate thickness is controlled to be 100-120 mm generally, the beam height is about 200-250 mm generally, the total height of the structural part is about 350mm, the conventional concrete beam can meet the requirement at the beam height of 400mm under the condition that the span is not large, the advantages of the steel structure relative to a concrete structure are not obvious in comparison, particularly for old modified buildings, the steel structure is adopted to increase the net height size of the building, and if the floor slab is still arranged on the floor surface, the requirement of the standard on the net height cannot be met.
In order to solve the above problems and increase the clear height of a building in a reconstruction project, it is necessary to develop a steel beam and concrete slab composite structure for increasing the clear height of the building.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to all sorts of problems that present transformation design exists among the above-mentioned technical background, provide a girder steel and concrete slab integrated configuration that increase the building net height to reduce the influence that structural component is to building net height, thereby realize increasing the purpose of building net height.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a steel beam and concrete slab composite structure for increasing the building clear height comprises an I-shaped steel beam, a concrete floor slab, shear keys and stiffening rib plates; the plurality of I-shaped steel beams are spliced to form a steel frame structure as a main beam and a secondary beam, and the plurality of stiffening rib plates are arranged on two sides of a web plate of each I-shaped steel beam and are welded and fixed with the web plate and the flange plate of the I-shaped steel beam; the concrete floor is arranged with violently indulging crisscross floor reinforcing bar in the concrete floor, and the side reason of concrete floor is connected on steel frame construction's I-shaped steel beam, just concrete floor all sets up the shear key with I-shaped steel beam hookup location, shear key one end is flat with I-shaped steel beam lower limb board top, and the other end is flat with concrete floor lower surface end, dispose shear reinforcing bar in the shear key.
As an optimal technical scheme of the utility model, the wide flat roof beam is chooseed for use to the I-steel roof beam.
As an optimal technical scheme of the utility model, the web both sides equidistant arrangement of stiffening rib board at every I-steel roof beam.
As an optimal technical scheme of the utility model, the stiffening rib plate interval on the every side web of I-steel roof beam is 800 ~ 1200mm, and stiffening rib plate thickness is the same with the edge of a wing board of I-steel roof beam.
As an optimal technical scheme of the utility model, concrete floor top surface is done flatly with I-steel beam top surface, perhaps reduces highly formation local falling board for I-steel beam top surface.
As an optimal technical scheme of the utility model, do not weld between floor reinforcing bar in the concrete floor and the I-shaped steel roof beam.
As an optimal technical scheme of the utility model, the shear reinforcement satisfies the requirement of standard to anchor length.
As an optimal technical scheme of the utility model, concrete floor pours the shaping with shear key an organic whole.
As the utility model discloses an optimized technical scheme, the wide flat roof beam should be chooseed for use to the I-shaped girder steel, not only can increase net height, can also increase concrete floor's the length of shelving.
As an optimal technical scheme of the utility model, the stiffening rib plate interval should be 800 ~ 1200mm, and thickness is the same with the edge of a wing board of I-shaped steel roof beam.
As an optimal technical scheme of the utility model, concrete floor not only can do with the girder steel top flat, can also reduce certain height according to the design requirement, has reached the local purpose that falls the board.
As an optimal technical scheme of the utility model, floor reinforcing bar in the concrete floor need not with the I-shaped steel beam welding.
As an optimal technical scheme of the utility model, the shear reinforcement should satisfy the requirement of standard to anchor length.
Contrast prior art, the utility model discloses following beneficial effect has: 1) the height of the structural member can be obviously reduced, so that the aim of increasing the net height of the building is fulfilled; 2) the construction process is simple, the construction is convenient, the shear-resistant studs do not need to be welded at the tops of the I-shaped steel beams, and meanwhile, the rigidity of a steel frame structure system can be improved by the concrete floor; 3) the local plate lowering treatment can be conveniently carried out according to design requirements, and compared with the traditional process, the method is more flexible and convenient to construct; 4) compared with the prior construction scheme, the construction method has the advantages that small secondary beams for supporting the floor slab do not need to be welded at the lower part of the slab, so that the construction cost can be reduced, and the construction progress can be accelerated; 5) the scheme can adapt to different primary and secondary beam heights and has the advantages of easiness in popularization and the like.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
figure 1 is a schematic cross-sectional view of a steel beam and concrete slab combination for increasing the clear height of a building.
In the figure: 1. i-shaped steel beam, 2, concrete floor, 3, floor reinforcing steel bars, 4, shear keys, 5, shear reinforcing steel bars, 6 and stiffening rib plates.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in fig. 1, in a preferred embodiment of the present invention, there is provided a steel beam and concrete slab combination structure for increasing building clear height, which mainly comprises an i-beam 1, a concrete floor 2, shear keys 4 and stiffening ribs 6.
Wherein I-steel girder 1 has many, and different I-steel girders 1 can splice as girder and secondary beam and form steel frame construction. The specific shape of the steel frame structure needs to be designed according to the floor slab in order to stably bear the load of the floor slab. The local floor to old building demolishs construction such as change, and steel frame construction should reform transform partial phase-match with the part of floor, certainly the utility model discloses also be applicable to the floor construction of new building. The I-shaped steel beam 1 adopted in the steel frame structure is suitable for being used as a wide flat beam, so that the net height can be increased, and the laying length of the concrete floor slab 2 can be increased.
In order to improve the overall structural strength of the I-shaped steel beam 1, stiffening rib plates 6 are required to be arranged on two sides of the web plate of each I-shaped steel beam 1, and the stiffening rib plates 6 are welded and fixed with the web plate and the flange plate of the I-shaped steel beam 1 on three sides, so that the structural performance of the I-shaped steel beam 1 is improved. The elevation of the concrete floor 2 needs to be determined according to design requirements, the floor reinforcing steel bars 3 which are staggered transversely and longitudinally are arranged in the concrete floor 2 according to the design requirements, and the floor reinforcing steel bars 3 need to be bound and fixed in the template in advance before the concrete floor 2 is poured. The peripheral side edges of the concrete floor 2 are connected to the I-shaped steel beams 1 of the steel frame structure.
However, in the present invention, the concrete floor 2 is not carried on the upper flange plate of the i-beam 1 as in the conventional method, but the shear key 4 is provided at the connection position of the concrete floor 2 and the i-beam 1 to realize the load transmission between the concrete floor 2 and the i-beam 1. In the structure, the lower end of the shear key 4 is flush with the lower flange plate of the I-shaped steel beam 1, the upper end of the shear key is flush with the lower surface of the concrete floor slab 2, and the shear steel bars 5 are arranged in the shear key 4 according to the design requirement. In addition, both ends of the shear reinforcement 5 should satisfy the requirements of the related design specifications for the anchoring length. After the arrangement and binding of the internal reinforcing steel bars are finished, the concrete floor slab 2 and the shear keys 4 can be integrally cast and molded. Thus, the self weight of the concrete floor 2 and the load borne thereon can be transmitted to the steel frame structure through the shear keys 4. Meanwhile, due to the existence of the concrete floor slab, the rigidity of the steel frame structure system is also improved.
The stiffening rib plates 6 are arranged on two sides of the web plate of each I-shaped steel beam 1 at equal intervals as far as possible, and the specific intervals and the size are determined according to calculation. In the embodiment, the distance between the stiffening rib plates 6 on the web plate of each side of the I-shaped steel beam 1 is 800-1200 mm, and the thickness of the stiffening rib plates 6 is the same as the thickness of the flange plate of the I-shaped steel beam 1.
The utility model discloses in, because concrete floor 2 need not as for the top of I-steel roof beam 1, consequently concrete floor 2 not only can do flat with I-steel roof beam 1 top surface, can also reduce certain height for I-steel roof beam 1 according to the design requirement, concrete floor 2 top surface elevation is less than the top surface elevation of I-steel roof beam 1 promptly to reach the local mesh that falls the board.
In addition, the floor slab reinforcing steel bars 3 in the concrete floor slab 2 do not need to be welded with the I-shaped steel beam 1, so that the construction procedures are reduced, and the construction efficiency is improved.
Based on the above content, the utility model also provides a concrete construction method of girder steel and concrete slab integrated configuration that increases the building clear height as follows:
step 1: according to design requirements, stiffening rib plates are welded on two sides of a steel beam web plate when an I-shaped steel beam is processed, and then the steel frame structure is formed by assembling on site according to design drawings.
Step 2: a template is erected on the lower portion of a concrete floor according to a designed floor, the sealing performance of the connecting position of the template and an I-shaped steel beam is required to be noticed during formwork erection, slurry leakage during concrete pouring is prevented, then floor reinforcing steel bars and shear reinforcing steel bars are bound on the template, and the floor reinforcing steel bars do not need to be welded with the I-shaped steel beam.
And step 3: and pouring concrete with specified marks and vibrating the concrete to be compact, and removing the template when the strength of the concrete reaches the design requirement to form the concrete floor slab integrally erected on the steel frame structure and the shear keys.
The scheme can effectively solve the problem that the building clear height is not enough, the construction steps are basically consistent with the traditional concrete construction process, the construction is simple and rapid, and the method can have the advantages of low construction cost, easiness in popularization and the like.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A steel beam and concrete slab combined structure for increasing the building clear height is characterized by comprising an I-shaped steel beam (1), a concrete floor (2), shear keys (4) and stiffening rib plates (6); the I-shaped steel beams (1) are spliced to form a steel frame structure as a main beam and a secondary beam, and the plurality of stiffening rib plates (6) are arranged on two sides of a web plate of each I-shaped steel beam (1) and are welded and fixed with the web plate and a flange plate of each I-shaped steel beam (1); it violently indulges crisscross floor reinforcing bar (3) to be arranged in concrete floor (2), and the side reason of concrete floor (2) is connected on steel frame construction's I-shaped steel roof beam (1), just concrete floor (2) all set up shear key (4) with I-shaped steel roof beam (1) hookup location, shear key (4) one end is flat-topped with I-shaped steel roof beam (1) lower flange board, and the other end is flat at the bottom of concrete floor (2) lower surface, dispose shear reinforcing bar (5) in shear key (4).
2. A steel beam and concrete panel assembly structure for increasing the building clear height according to claim 1 wherein said i-section steel beam (1) is a flat beam.
3. A steel beam and concrete panel combination structure for increasing the building clear height according to claim 1 wherein said stiffening ribs (6) are equally spaced on either side of the web of each i-section steel beam (1).
4. A steel beam and concrete slab combination structure for increasing the building clear height according to claim 1, wherein the distance between the stiffening rib plates (6) on the web plate of each side of the i-shaped steel beam (1) is 800-1200 mm, and the thickness of the stiffening rib plates (6) is the same as the thickness of the flange plate of the i-shaped steel beam (1).
5. A steel beam and concrete slab composite structure for increasing the building clear height according to claim 1, wherein the top surface of the concrete floor slab (2) is made flat with the top surface of the i-shaped steel beam (1), or is lowered to a height relative to the top surface of the i-shaped steel beam (1) to form a local lowering plate.
6. A steel beam and concrete slab composite structure for increasing the building clear height according to claim 1, wherein the floor reinforcing bars (3) in the concrete floor (2) are not welded with the i-shaped steel beams (1).
7. A steel beam and concrete panel combination structure for increasing the building clear height according to claim 1, wherein the shear reinforcement (5) meets the requirements of the specification for anchoring length.
8. A steel beam and concrete slab composite structure for increasing the building clear height according to claim 1, wherein the concrete floor slab (2) is integrally cast with the shear keys (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120236432.8U CN214738733U (en) | 2021-01-27 | 2021-01-27 | Increase girder steel and concrete slab integrated configuration of building clear height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120236432.8U CN214738733U (en) | 2021-01-27 | 2021-01-27 | Increase girder steel and concrete slab integrated configuration of building clear height |
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| Publication Number | Publication Date |
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| CN214738733U true CN214738733U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120236432.8U Active CN214738733U (en) | 2021-01-27 | 2021-01-27 | Increase girder steel and concrete slab integrated configuration of building clear height |
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| CN (1) | CN214738733U (en) |
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2021
- 2021-01-27 CN CN202120236432.8U patent/CN214738733U/en active Active
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