CN113107127A - Reinforced composite floor slab - Google Patents
Reinforced composite floor slab Download PDFInfo
- Publication number
- CN113107127A CN113107127A CN202110529639.9A CN202110529639A CN113107127A CN 113107127 A CN113107127 A CN 113107127A CN 202110529639 A CN202110529639 A CN 202110529639A CN 113107127 A CN113107127 A CN 113107127A
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- Prior art keywords
- concrete
- floor slab
- additional rigidity
- composite floor
- prefabricated
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a reinforced composite floor slab, which comprises a composite floor slab body and a plurality of additional rigidity pieces, wherein the composite floor slab body comprises a prefabricated floor slab and a plurality of concrete convex blocks arranged on the prefabricated floor slab, the additional rigidity pieces are channel steel or C-shaped steel, openings of the additional rigidity pieces are downwards arranged and cover the concrete convex blocks, end surfaces of two side walls of the additional rigidity pieces are attached to the prefabricated floor slab, and the additional rigidity pieces are detachably and fixedly connected with the concrete convex blocks. The reinforced composite floor slab designed by the scheme has good rigidity, greatly improves the efficiency in the aspects of structure, manufacturing and production process, saves resources and materials, and reduces the cost in all aspects.
Description
Technical Field
The invention relates to a composite floor slab, in particular to a reinforced composite floor slab.
Background
The prefabricated superimposed sheet of internal assembled mainstream is truss reinforcing bar superimposed sheet at present, and the superimposed floor of the current domestic mainstream has following shortcoming: (1) the truss steel bars are arranged, so that the steel bar content of the truss steel bars is high (about 50-60% higher than that of the steel bars of the traditional cast-in-situ slab); (2) the laminated slab has the advantages that the thickness of the bottom plate of the laminated slab is large (usually 60mm thick), so that the total thickness of the floor slab is large (the thickness of the bottom plate is 60mm plus the laminated layer is 80mm, the total thickness reaches 140mm, and is increased by 40% compared with the thickness of the traditional cast-in-place floor which is 100 mm), the cost is high, the self weight of the structure is heavy, and the weight of the whole house and the content of reinforcing; (3) the ribs are arranged at the slab end and the slab side of the floor slab, so that a factory production mold is complicated, and the slab side bottom mold of the bidirectional slab is complicated on site, so that the manufacturing and construction processes are complicated; (4) due to the height limitation of the truss, the difficulty of pipeline penetration on site is high, so that the site construction is complicated, the plate thickness is generally ultra-thick, and the cost is increased; (5) the plate bottom field formwork supporting and supporting density is high, so that the construction difficulty is high, and the assembly type advantage is not exerted. The problems lead to large cost increment and complex manufacturing and construction process of the laminated floor slab compared with the traditional cast-in-place floor slab.
In recent years, many companies in the industry have developed novel composite floor slabs, including prestressed slabs, PKIII slabs, rib-free composite slabs and the like, which can solve part of problems, but still are difficult to achieve a more ideal state, cannot solve most of problems at the same time, and still have a larger improvement space. Which comprises the following steps:
(1) prestressed plate: the prestressed reinforcement is adopted as the bottom reinforcement, the prestressed reinforcement slab has the advantages that truss reinforcements can be omitted, the using amount of the reinforcements is reduced, the thickness of the prestressed reinforcement slab is generally 60-70mm thick according to span requirements, the problem of the thickness of the bottom plate cannot be solved, the two-way stressed plate with no reinforcements on the plate side is difficult to realize due to the large thickness of the bottom plate, the total thickness of the floor slab is not more advantageous than that of a truss laminated slab, the total thickness of the floor slab is larger, the structure is self-weight, and the content of the reinforcements of the foundation and the structure main body.
(2) The truss pipe prestressed plate, the top muscle (formation steel pipe truss) of truss reinforcing bar is replaced to the metal pipe of inside grout, and the main atress muscle of bottom plate adopts the prestressing tendons. The steel pipe truss has the advantages that the steel pipe truss realizes that the rigidity of the floor slab is increased compared with that of a truss steel bar laminated slab, and the steel pipe truss is provided with the prestressed tendons, so that the thickness can be greatly reduced (the thickness is about 35-40mm) compared with that of a bottom plate (60 mm) of a common truss steel bar laminated slab, the thickness of the slab can be reduced, the weight is reduced, and hoisting, construction and material cost saving are realized. And because the rigidity is increased, the construction bottom plate can be supported less, the construction difficulty is reduced, and the cost is saved.
The prefabricated plate has the defects that the metal pipe grouted inside replaces the top rib of the truss steel bar, the cost of the steel pipe truss part is further increased compared with that of the common truss steel bar, the steel content of the prefabricated plate is too high, the diameter of the truss pipe is larger, the prefabricated plate is more difficult to pass and lay an on-site pipeline, and the thickness of the superposed layer of the prefabricated plate is larger than that of the common truss superposed plate.
Therefore, the skilled person is dedicated to develop a reinforced laminated floor slab, which can improve the rigidity of the floor slab by adding a rigidity member, and ensure that the floor slab does not crack during the processes of manufacturing, demoulding, transporting and hoisting.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a reinforced composite floor slab, wherein the additional stiffness member is arranged on the composite floor slab body, so that the additional stiffness member is tightly attached to the composite floor slab body, the stiffness of the composite floor slab is improved, the efficiency is greatly improved in the aspects of structure, manufacturing and production processes, resources and materials are saved, and the cost is reduced comprehensively.
In order to achieve the purpose, the invention provides a reinforced composite floor slab, wherein the composite floor slab body comprises a prefabricated floor slab and a plurality of concrete convex blocks arranged on the prefabricated floor slab, the additional rigidity piece is made of channel steel or C-shaped steel, the additional rigidity piece is arranged on the upper surfaces of the concrete convex blocks, and the top of the additional rigidity piece is detachably and fixedly connected with the concrete convex blocks.
Further, the additional rigidity piece is arranged with an opening facing downwards, the end faces of two side walls of the additional rigidity piece are attached to the upper surfaces of the plurality of concrete bumps, the threaded sleeves are embedded at the tops of the concrete bumps, and the tops of the additional rigidity piece and the tops of the concrete bumps are detachably and fixedly connected through bolts.
Further, the opening of the additional rigidity piece is arranged upwards, the lower surface of the bottom of the additional rigidity piece is attached to the upper surfaces of the plurality of concrete lugs, the threaded sleeves are embedded at the tops of the concrete lugs, and the top of the additional rigidity piece is detachably and fixedly connected with the tops of the concrete lugs through bolts.
Furthermore, the concrete bump and the prefabricated bottom plate are integrally cast or are fixedly connected with the prefabricated bottom plate after being prefabricated in advance, and the height of the concrete bump is equal to that of the cast-in-place superposed layer.
Further, at least one shear steel bar or shear connector is prefabricated in the concrete bump.
Furthermore, a plurality of concrete lugs are uniformly distributed in a plurality of rows, and the additional rigidity piece is arranged on the upper surfaces of the concrete lugs on one row.
Furthermore, be located two adjacent on one row between a plurality of concrete lugs pre-buried threaded rod that is equipped with on the precast floor, be equipped with the connecting thread sleeve on the threaded rod, the bolt pass additional rigidity piece with connecting thread muffjoint, the telescopic height of connecting thread with the height of concrete lug equals.
Furthermore, two side faces of the channel steel or the C-shaped steel are of porous hollow structures.
Further, a suspension point is arranged on the additional rigidity piece.
Further, the thickness of the prefabricated floor slab is 30mm to 50 mm.
The invention has the beneficial effects that: according to the composite floor slab, the plurality of additional rigidity pieces are arranged on the composite floor slab body, and the additional rigidity pieces are directly attached to the surface of the composite floor slab body, so that the additional rigidity pieces and the composite floor slab body are integrated, the overall thickness of the whole composite floor slab on a mechanical model when the composite floor slab is stressed is increased, the overall rigidity of the composite floor slab is improved, and damage caused by uneven local stress during hoisting can be avoided. The composite floor slab also needs auxiliary support when the composite floor slab is cast in place after being installed, the additional rigidity piece does not interfere with the composite floor slab body, the additional rigidity piece does not need to be detached when the composite floor slab is poured, the additional rigidity piece is detached after the composite floor slab is poured, the construction process is saved, and the production efficiency is improved.
Compared with the traditional structure, the cast-in-place laminated layer has the advantages that truss steel bars are omitted, the using amount of the steel bars is saved, the pipe penetrating is easier in site construction, the thickness of the cast-in-place laminated layer can be reduced, and the material cost is reduced. Because the additional rigidity part and the composite floor slab body are integrated, the whole thickness of the composite floor slab on a mechanical model when the composite floor slab is stressed is increased, the thickness of the prefabricated floor slab can be reduced, and the material cost is reduced.
Because the thickness of prefabricated floor and cast-in-place coincide layer all reduces, can realize the holistic thickness reduction of coincide floor, reduce the reinforcing bar content of basis and structural stress main part, reduce total cost.
Because the prefabricated floor becomes thin, the side-close splicing bidirectional plate can be realized, a post-pouring belt is not required to be arranged between the two plates, the close splicing adopts the lap joint of the steel bars to form the bidirectional plate, and the factory production and the field construction are simplified.
Drawings
FIG. 1 is a schematic view of a reinforced composite floor slab according to the present invention;
FIG. 2 is a schematic view of the installation of a reinforced composite floor slab of the present invention;
FIG. 3 is a schematic view of the construction of the additional stiffness member of the present invention;
FIG. 4 is a schematic view of the installation of the additional stiffness member of the present invention;
fig. 5 is a schematic structural view of the concrete bump according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example one
As shown in fig. 1 to 5, a reinforced composite floor slab comprises a composite floor slab body 1 and a plurality of additional rigidity members 2, wherein the composite floor slab body 1 comprises a prefabricated floor slab 3 and a plurality of concrete convex blocks 4 arranged on the prefabricated floor slab 3, the concrete convex blocks and the prefabricated base plate are integrally cast or are fixedly connected with the prefabricated base plate after being prefabricated in advance, in the implementation, the concrete convex blocks are arranged when the prefabricated base plate is cast after being prefabricated, the prefabricated base plate is formed into a whole after concrete of the prefabricated base plate is solidified, the height of the concrete convex blocks 4 is equal to that of a cast-in-place laminated layer, and the design has the advantage that the height of the concrete convex blocks 4 can be used as a scale of the cast-in-place laminated layer in the cast-in-place process.
At least one shear steel bar 5 or a shear connector is prefabricated in the concrete bump 4, preferably, the concrete bump 4 is square, and the shear steel bars 5 are arranged at four corners of the square concrete bump 4. A plurality of concrete lugs 4 are uniformly distributed in multiple rows
The additional stiffness part 2 is a channel steel or a C-shaped steel, two side faces of the channel steel or the C-shaped steel are of porous hollow structures, specifically are trussed, namely the two side walls of the channel steel or the C-shaped steel are provided with the porous hollow structures, and the tube part of the embodiment is preferably long and straight C-shaped steel.
The openings of the C-shaped steel are downwards arranged on the concrete bumps 4 positioned on one row, and the end surfaces of two side walls of the C-shaped steel are directly attached to the upper surfaces of the concrete bumps below the C-shaped steel. A threaded rod 7 is pre-buried on the precast floor slab between two adjacent concrete lugs on one row, a connecting threaded sleeve 8 is arranged on the threaded rod, and the bolt penetrates through the additional rigidity piece to be connected with the connecting threaded sleeve.
And a suspension point 9 is arranged on the top surface of the C-shaped steel, and the suspension point 9 is specifically a welded steel suspension ring.
The additional rigidity piece 2 with fixed connection can be dismantled to concrete lug 4, and is concrete, C shaped steel and concrete lug 4 pass through bolted connection, and the pre-buried threaded sleeve 6 of top surface of concrete lug 4 also is equipped with the through-hole in the corresponding position of C shaped steel top surface, and bolted connection passes through-hole and pre-buried threaded sleeve connection 6 in proper order, and after the transportation was accomplished the installation, can dismantle additional rigidity piece 2 through dismantling the bolt, carry out the process of follow-up cast-in-place coincide layer. Because the additional rigidity piece 2 is arranged and the additional rigidity piece 2 is attached to the close surface of the composite floor slab body 1, in the hoisting process, the concrete bump 4 and the additional rigidity piece 2 equivalently increase the mechanical bearing thickness of the prefabricated floor slab 3, the thickness of the prefabricated floor slab 3 can be reduced to 30mm to 50mm, preferably 40mm, compared with the prior art, the thickness of the cast-in-place composite layer can be reduced to 70mm due to the arrangement of the concrete bump 4 and the shear steel bar 5 in the concrete bump 4.
Example two
As shown in fig. 1 to 5, a reinforced composite floor slab comprises a composite floor slab body 1 and a plurality of additional rigidity members 2, wherein the composite floor slab body 1 comprises a prefabricated floor slab 3 and a plurality of concrete convex blocks 4 arranged on the prefabricated floor slab 3, and the concrete convex blocks and the prefabricated base plate are integrally cast or are fixedly connected with the prefabricated base plate after being prefabricated in advance.
At least one shear steel bar 5 is prefabricated in the concrete bump 4, preferably, the concrete bump 4 is in a square shape, and the shear steel bars 5 are arranged at four corners of the square concrete bump 4. A plurality of concrete lugs 4 are uniformly distributed in multiple rows
The additional rigidity part 2 is channel steel or C-shaped steel, two side faces of the channel steel or the C-shaped steel are of porous hollow structures, specifically are trusses, the pipe part of the embodiment is preferably long and straight C-shaped steel,
the openings of the C-shaped steel are upwards arranged on the concrete bumps 4 positioned on one row, and the lower surface of the bottom of the C-shaped steel is directly attached to the upper surfaces of the concrete bumps below the C-shaped steel. An additional threaded sleeve is pre-buried on the precast floor slab between two adjacent concrete lugs on one row, and the bolt penetrates through the additional rigidity piece to be connected with the additional threaded sleeve.
The bottom in the groove of the C-shaped steel is provided with a suspension point (not shown in the figure), and the suspension point is specifically a welded steel suspension ring.
The additional rigidity piece 2 and the concrete bump 4 can be dismantled fixed connection, and specifically, C shaped steel passes through bolted connection with the concrete bump 4, and the pre-buried threaded sleeve (not shown in the figure) of top surface of concrete bump 4, and the corresponding position of C shaped steel top surface is equipped with the through-hole, and the bolt passes through the through-hole and is connected with pre-buried threaded sleeve, and after the transportation completion installation, can will be through dismantling the bolt and can dismantle additional rigidity piece 2, carry out the process of follow-up cast-in-place coincide layer. Because the additional rigidity piece 2 is arranged and the additional rigidity piece 2 is attached to the close surface of the composite floor slab body 1, in the hoisting process, the concrete bump 4 and the additional rigidity piece 2 equivalently increase the mechanical bearing thickness of the prefabricated floor slab 3, the thickness of the prefabricated floor slab 3 can be reduced to 30mm to 50mm, preferably 40mm, compared with the prior art, the thickness of the cast-in-place composite layer can be reduced to 70mm due to the arrangement of the concrete bump 4 and the shear steel bar 5 in the concrete bump 4.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a strengthen coincide floor, includes coincide floor body and a plurality of additional rigidity piece, characterized by: coincide floor body includes prefabricated floor and establishes a plurality of concrete lugs on the prefabricated floor, additional rigidity spare is channel-section steel or C shaped steel, the upper surface of a plurality of concrete lugs is located to the additional rigidity spare, the top of additional rigidity spare with fixed connection can be dismantled to the concrete lug.
2. A reinforced composite floor slab as claimed in claim 1, wherein: the opening of the additional rigidity piece is arranged downwards, the end faces of two side walls of the additional rigidity piece are attached to the upper surfaces of the plurality of concrete lugs, the threaded sleeves are embedded at the tops of the concrete lugs, and the tops of the additional rigidity piece and the tops of the concrete lugs are detachably and fixedly connected through bolts.
3. A reinforced composite floor slab as claimed in claim 1, wherein: the opening of the additional rigidity piece is arranged upwards, the lower surface of the bottom of the additional rigidity piece is attached to the upper surfaces of the concrete convex blocks, threaded sleeves are embedded at the tops of the concrete convex blocks, and the tops of the additional rigidity piece and the tops of the concrete convex blocks are detachably and fixedly connected through bolts.
4. A reinforced composite floor slab as claimed in any one of claims 1 to 3, wherein: the concrete bump and the prefabricated bottom plate are integrally cast or prefabricated in advance and then fixedly connected with the prefabricated bottom plate, and the height of the concrete bump is equal to that of the cast-in-place superposed layer.
5. A reinforced composite floor slab as claimed in any one of claims 1 to 3, wherein: at least one shear steel bar or shear connector is prefabricated in the concrete bump.
6. A reinforced composite floor slab as claimed in any one of claims 1 to 3, wherein: the concrete lugs are uniformly arranged in multiple rows, and the additional rigidity piece is arranged on the upper surfaces of the concrete lugs in one row.
7. A reinforced composite floor slab as claimed in any one of claims 6, wherein: be located two adjacent on one row between a plurality of concrete lugs prefabricated floor is last pre-buried to be equipped with the threaded rod, be equipped with the connecting thread sleeve on the threaded rod, the bolt pass additional rigidity piece with connecting thread muffjoint, the telescopic height of connecting thread with the height of concrete lug equals.
8. A reinforced composite floor slab as claimed in any one of claims 1 to 3, wherein: and two side surfaces of the channel steel or the C-shaped steel are of porous hollow structures.
9. A reinforced composite floor slab as claimed in any one of claims 1 to 3, wherein: and suspension points are arranged on the additional rigidity piece.
10. A reinforced composite floor slab as claimed in any one of claims 1 to 3, wherein: the thickness of the prefabricated floor slab is 30mm to 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110529639.9A CN113107127A (en) | 2021-05-14 | 2021-05-14 | Reinforced composite floor slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110529639.9A CN113107127A (en) | 2021-05-14 | 2021-05-14 | Reinforced composite floor slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113107127A true CN113107127A (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110529639.9A Pending CN113107127A (en) | 2021-05-14 | 2021-05-14 | Reinforced composite floor slab |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700153A (en) * | 2021-08-31 | 2021-11-26 | 筑友智造建设科技集团有限公司 | Connecting structure of assembled laminated slab and combination beam and construction method thereof |
| CN114000631A (en) * | 2021-11-23 | 2022-02-01 | 重庆大学 | Rotary detachable steel frame and laminated plate connecting structure |
-
2021
- 2021-05-14 CN CN202110529639.9A patent/CN113107127A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700153A (en) * | 2021-08-31 | 2021-11-26 | 筑友智造建设科技集团有限公司 | Connecting structure of assembled laminated slab and combination beam and construction method thereof |
| CN114000631A (en) * | 2021-11-23 | 2022-02-01 | 重庆大学 | Rotary detachable steel frame and laminated plate connecting structure |
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