CN213926977U - Prefabricated bottom plate with hidden beam and folded plate type laminated slab comprising prefabricated bottom plate - Google Patents
Prefabricated bottom plate with hidden beam and folded plate type laminated slab comprising prefabricated bottom plate Download PDFInfo
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- CN213926977U CN213926977U CN202022795484.7U CN202022795484U CN213926977U CN 213926977 U CN213926977 U CN 213926977U CN 202022795484 U CN202022795484 U CN 202022795484U CN 213926977 U CN213926977 U CN 213926977U
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- hidden beam
- steel bars
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 47
- 230000003014 reinforcing effect Effects 0.000 claims description 32
- 239000002131 composite material Substances 0.000 claims description 11
- 238000004873 anchoring Methods 0.000 claims description 8
- 108010068370 Glutens Proteins 0.000 claims description 3
- 235000021312 gluten Nutrition 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 9
- 239000004567 concrete Substances 0.000 abstract description 15
- 238000010276 construction Methods 0.000 abstract description 7
- 238000009415 formwork Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model discloses a prefabricated bottom plate with hidden beams and a folded plate type laminated slab comprising the same, which belong to the field of assembly type buildings, the prefabricated bottom plate comprises a low bottom plate, hidden beams and a high bottom plate which are sequentially connected, the lower surface of the hidden beams is lower than or flush with the lower surface of the low bottom plate, the lower surface of the high bottom plate and the lower surface of the hidden beams have a height difference, the upper surface of the hidden beams is higher than the upper surfaces of the high bottom plate and the low bottom plate, and the high bottom plate, the hidden beams and the low bottom plate are integrally cast; wherein: a closed stirrup is arranged in the hidden beam; the hidden beam is characterized by further comprising a plurality of first bottom plate reinforcing steel bars and second bottom plate reinforcing steel bars which are perpendicular to the hidden beam respectively. The utility model discloses a prefabricated bottom plate has the hidden beam and integrative pouring forms, and the component is continuous and the difference in height realizes easily at the bottom of the both sides board, does not influence cast-in-place layer concrete placement quality, and the superimposed sheet wholeness is good. And a field formwork can be omitted, the field steel bar binding procedure is simplified, and the field construction is convenient.
Description
Technical Field
The utility model relates to an assembly type structure field especially relates to a take prefabricated bottom plate of hidden beam and folded plate formula superimposed sheet including it.
Background
At present, the assembled building is widely popularized in China, and the precast concrete composite slab is widely applied to the assembled concrete building and consists of a precast bottom plate and a superposed cast-in-place layer.
In residential buildings, due to the requirements of building functions of parts such as kitchens, toilets, corridors and the like, the elevation of a floor slab needs to be reduced in design, and the floor slab forms a height difference with a peripheral floor slab. When precast concrete composite slabs are adopted at the positions, the common practice in the industry at present is to adopt a mode of locally arranging cast-in-place sections to deal with the height difference change of the floor slab.
The mode of locally arranging the cast-in-place section needs to be locally supported on a construction site, the difficulty of supporting the formwork is high, and a formwork and a support of the cast-in-place section and supports of prefabricated bottom plates on two sides of the cast-in-place section form an integral support system to bear construction load together; the precision requirement of formwork is higher, need prevent that template and both sides prefabricated bottom plate from having the gap and producing when leading to concreting and leaking thick liquid, influence concrete forming quality. Because the space of the local cast-in-place section is narrow and small, the steel bars are difficult to bind, the dense steel bars also lead to the concrete not to be easy to vibrate, the pouring quality is difficult to ensure, and the cast-in-place section and the floors on two sides have poor integrity.
Therefore, the local cast-in-place mode has the problems of difficult site construction, difficult guarantee of concrete pouring quality and poor floor integrity.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a take prefabricated bottom plate of dark roof beam and folded plate formula superimposed sheet including it, the utility model discloses a prefabricated bottom plate is integrative to be prefabricated to have the dark roof beam, makes the continuous and both sides board end difference in height realize easily, does not influence cast-in-place layer concreting quality, and the superimposed sheet wholeness is good, solves local cast-in-place mode and leads to the relatively poor problem of floor wholeness.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
on one hand, the utility model provides a prefabricated bottom plate with hidden beams, as the bottom plate of a laminated slab, comprising a low bottom plate, hidden beams and a high bottom plate which are connected in sequence, wherein the lower surface of the hidden beams is lower than or flush with the lower surface of the low bottom plate, the lower surface of the high bottom plate and the lower surface of the hidden beams have a height difference, the upper surface of the hidden beams is higher than the upper surfaces of the high bottom plate and the low bottom plate, and the high bottom plate, the hidden beams and the low bottom plate are integrally cast; wherein:
a closed stirrup is arranged in the hidden beam;
the first bottom plate steel bars and the second bottom plate steel bars are perpendicular to the hidden beam respectively;
one end of the first bottom plate steel bar is positioned in the low bottom plate, and the other end of the first bottom plate steel bar penetrates through the hidden beam and is bent twice to enable the extending section to extend out of a certain anchoring length above the high bottom plate;
one end of the second bottom plate steel bar is positioned in the high bottom plate, and the other end of the second bottom plate steel bar penetrates through the hidden beam and bends the needle twice to enable the extending section to extend out of the upper portion of the low bottom plate by a certain anchoring length.
Furthermore, a plurality of longitudinal steel bars perpendicular to the closed stirrups are arranged in the hidden beam.
And the reinforcing bottom ribs are parallel to the hidden beam and arranged on the first bottom plate reinforcing steel bars or the second bottom plate reinforcing steel bars.
Furthermore, the truss structure also comprises a first truss steel bar and a second truss steel bar which are respectively positioned at two sides of the hidden beam; the bottoms of the first truss steel bars and the second truss steel bars are respectively arranged on the first bottom plate steel bars and the second bottom plate steel bars.
Furthermore, the first truss steel bar and the second truss steel bar are perpendicular to the hidden beam, the extending section of the second bottom plate steel bar is flush with the upper chord steel bar of the first truss steel bar, the extending section of the first bottom plate steel bar is flush with the upper chord steel bar of the second truss steel bar, and the length of the extending section of the first bottom plate steel bar and the length of the extending section of the second bottom plate steel bar are not less than 300 mm.
Or, the first and second truss reinforcing steel bars are parallel to the hidden beam, the extending section of the second bottom plate reinforcing steel bar is lapped on the upper chord reinforcing steel bar of the first truss reinforcing steel bar, the extending section of the first bottom plate reinforcing steel bar is lapped on the upper chord reinforcing steel bar of the second truss reinforcing steel bar, and the lengths of the extending sections of the first and second bottom plate reinforcing steel bars are not less than 200 mm.
On the other hand, the folded plate type composite slab comprises the prefabricated bottom plate with the hidden beam, and the composite layer is poured on the prefabricated bottom plate.
Furthermore, the laminated layer comprises a high-layer plate and a low-layer plate which are integrally poured and are respectively positioned on the high bottom plate and the low bottom plate, the upper surface of the hidden beam is higher than that of the bottom plate, and the upper surface of the low-layer plate is perpendicular to the end face of the hidden beam.
Further, the upper surface of the dark beam is higher than or flush with the upper surface of the high-rise plate.
The first bottom plate steel bar is positioned in the high-rise plate and is in lap joint with the extending end of the first bottom plate steel bar; the first plate surface reinforcing steel bars are positioned in the low-layer plate and are in lap joint with the extending ends of the second bottom plate reinforcing steel bars.
Further, a plurality of strengthening gluten parallel to the hidden beam are also included.
After adopting such design, the utility model discloses following advantage has at least:
the utility model discloses a prefabricated bottom plate has the hidden beam and integrative pouring forms, and the component is continuous and the difference in height realizes easily at the bottom of the both sides board, does not influence cast-in-place layer concrete placement quality, and the superimposed sheet wholeness is good. And a field formwork can be omitted, the field steel bar binding procedure is simplified, and the field construction is convenient.
Drawings
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
FIG. 1 is a schematic structural diagram of an embodiment of a prefabricated floor with hidden beams according to the present invention; the truss steel bars on the two sides of the hidden beam are parallel to the hidden beam;
FIG. 2 is a schematic diagram of a folded plate composite slab with a composite layer poured on a prefabricated base plate according to the embodiment of FIG. 1;
FIG. 3 is a schematic structural diagram of another embodiment of the prefabricated floor with hidden beams according to the present invention; the truss steel bars on the two sides of the hidden beam are perpendicular to the hidden beam;
fig. 4 is a schematic structural view of a folded plate type composite slab with a composite layer poured on a prefabricated base plate of the embodiment of fig. 3.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The utility model provides an embodiment of a prefabricated bottom plate with a hidden beam, as shown in fig. 1 to 4, the prefabricated bottom plate 1 comprises a low bottom plate 12, a hidden beam 3 and a high bottom plate 11 which are sequentially connected, the lower surface of the hidden beam 3 is lower than or flush with the lower surface of the low bottom plate 12, the lower surface of the high bottom plate 11 and the lower surface of the hidden beam 3 have a height difference, the upper surface of the hidden beam 3 is higher than the upper surfaces of the high bottom plate 11 and the low bottom plate 12, and the high bottom plate 11, the hidden beam 3 and the low bottom plate 12 are integrally poured; wherein: the hidden beam 3 is internally provided with a closed stirrup 32; the hidden beam structure also comprises a plurality of first bottom plate reinforcing steel bars 16 and second bottom plate reinforcing steel bars 15 which are respectively vertical to the hidden beam 3; one end of a first bottom plate steel bar 16 is positioned in the low bottom plate 12, and the other end of the first bottom plate steel bar penetrates through the hidden beam 3 and is bent twice to enable the extending section to extend out of a certain anchoring length above the high bottom plate 11; one end of the second bottom plate steel bar 15 is positioned in the high bottom plate 11, and the other end of the second bottom plate steel bar penetrates through the hidden beam 3 and bends the needle twice to enable the extending section to extend out for a certain anchoring length above the low bottom plate 12.
The utility model discloses take prefabricated bottom plate an organic whole of dark roof beam to pour and form, the component is continuous and the difference in height realizes easily at the bottom of the both sides board, does not influence cast-in-place layer concrete placement quality, and the superimposed sheet wholeness is good. And a field formwork can be omitted, the field steel bar binding procedure is simplified, and the field construction is convenient.
The prefabricated bottom plate 1 of the utility model is composed of a high bottom plate 11 and a low bottom plate 12 with different elevations, the high bottom plate 11 and the low bottom plate 12 are distributed at two sides of the prefabricated hidden beam 3, the lower surface of the low bottom plate 12 with the low elevation can be flush with the lower surface of the prefabricated hidden beam 3, and is higher than the bottom surface of the prefabricated hidden beam 3 by a certain height according to the design requirement; the lower surface of the high-elevation precast bottom plate 11 is higher than the bottom surface of the precast hidden beam 3 by a certain height according to the design requirement. The first bottom plate reinforcing steel bars 16 and the second bottom plate reinforcing steel bars 15 of the high bottom plate 11 and the low bottom plate 12 extend to the edge of the prefabricated hidden beam, then are bent upwards by a certain length and horizontally extend out by a certain anchoring overlap length.
The utility model discloses well first bottom plate reinforcing bar 16, the section of stretching out of second bottom plate reinforcing bar 15 all indicate the reinforcing bar section that corresponding bottom plate reinforcing bar level stretches out after buckling twice.
Furthermore, a plurality of longitudinal steel bars 31 perpendicular to the closed stirrups 32 are arranged in the hidden beam 3, and 4 longitudinal steel bars 31 can be arranged and can be respectively positioned at the inner corners of the stirrups 32.
Furthermore, the hidden beam structure also comprises a plurality of reinforcing bottom ribs which are parallel to the hidden beam and are arranged on the first bottom plate reinforcing steel bars 16 or the second bottom plate reinforcing steel bars 15.
In order to further strengthen the integrity and the strength, the hidden beam further comprises a first truss reinforcing steel bar 13 and a second truss reinforcing steel bar 14 which are respectively positioned at two sides of the hidden beam, wherein the first truss reinforcing steel bar 13 and the second truss reinforcing steel bar 14 are respectively arranged on a first bottom plate reinforcing steel bar 16 and a second bottom plate reinforcing steel bar 15.
The arrangement of the truss steel bars has two modes:
one way is as follows: first truss reinforcing bar 13, second truss reinforcing bar 14 all are perpendicular with hidden beam 3, and the stretch out section of second bottom plate reinforcing bar 15 flushes with the last chord reinforcing bar of first truss reinforcing bar 13, and the stretch out section of first bottom plate reinforcing bar 16 flushes with the last chord reinforcing bar of second truss reinforcing bar 14, and the length of the stretch out section of first bottom plate reinforcing bar 16, second bottom plate reinforcing bar 15 should not all be less than 300 mm.
The other mode is as follows: first truss reinforcing bar 13, second truss reinforcing bar 14 all are parallel with hidden beam 3, and the extension overlap joint of second bottom plate reinforcing bar 15 is on the last chord reinforcing bar of first truss reinforcing bar 13, and the extension overlap joint of first bottom plate reinforcing bar 16 is on the last chord reinforcing bar of second truss reinforcing bar 14, and the length of the extension of first bottom plate reinforcing bar 16, second bottom plate reinforcing bar 15 should not all be less than 200 mm.
On the other hand, the folded plate type composite slab comprises the prefabricated bottom plate with the hidden beam, and the laminated layer 2 is poured on the prefabricated bottom plate.
Further, the laminated layer 2 comprises a high-layer plate 22 and a low-layer plate 21 which are integrally poured, the upper surface of the hidden beam 3 is higher than the upper surface of the low-layer plate 21, and the upper surface of the low-layer plate 21 is perpendicular to the end surface of the hidden beam 3.
The cast-in-place concrete laminated layer 2 of the utility model consists of high-layer plates 22 and low-layer plates 21 with different elevations, the high-layer plates 22 and the low-layer plates 21 are distributed at two sides of the prefabricated hidden beam 3, the top surface of the high-level plates 22 can be flush with the top surface of the prefabricated hidden beam 3, and the top surface of the high-level plates is lower than the top surface of the prefabricated hidden beam 3 by a certain height according to the design requirement; the top surface of the low-layer plate 21 with low elevation is lower than the top surface of the prefabricated hidden beam 3 by a certain height according to the design requirement; the second face reinforcing steel bars 24 and the first face reinforcing steel bars 23 of the high-layer plate 22 and the low-layer plate 21 are respectively in lap joint with the first plate bottom reinforcing steel bars 16 and the second plate bottom reinforcing steel bars 15.
Further, a plurality of strengthening gluten parallel to the hidden beam are also included.
One example of the method for manufacturing the folded plate type laminated slab may be: :
1) preparing a prefabricated base plate production mold platform: and setting the elevation difference of the die table according to the elevation difference of the low bottom plate 12 and the high bottom plate 11 of the prefabricated bottom plate 1, and setting hidden beam side dies on two sides of the prefabricated hidden beam 3.
2) Binding the prefabricated hidden beam and the prefabricated bottom plate steel bars: firstly binding stirrups 32 and longitudinal steel bars 31 of the prefabricated hidden beam 3 on a production mould table; and then binding plate bottom steel bars and truss steel bars of the prefabricated bottom plate 1, and bending the first plate bottom steel bars 16 and the second plate bottom steel bars 15 of the low bottom plate 12 and the high bottom plate 11 upwards by a certain length after extending to the edge of the prefabricated hidden beam 3 and horizontally extending out of a section of anchoring lap joint length.
3) Pouring and maintaining concrete of the prefabricated hidden beam and the prefabricated bottom plate: and (5) concrete of the prefabricated hidden beam 3 and the prefabricated bottom plate 1 is poured and then maintained.
4) Binding the cast-in-place concrete laminated layer steel bars: binding reinforcing steel bars of a cast-in-place concrete superposed layer 2 on the prefabricated bottom plate 1; the second face reinforcing steel bars 24 and the first face reinforcing steel bars 23 of the high-layer plate 22 and the low-layer plate 21 are respectively in lap joint with the first plate bottom reinforcing steel bars 16 and the second plate bottom reinforcing steel bars 15.
5) Pouring and maintaining cast-in-place laminated layer concrete: and pouring cast-in-place laminated concrete, and performing concrete maintenance after the high-layer plate 22 and the low-layer plate 21 reach the designed elevation to complete the construction of the laminated slab.
The above description is only for the preferred embodiment of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make various modifications, equivalent changes and modifications using the above-described technical content, all of which fall within the scope of the present invention.
Claims (10)
1. A prefabricated bottom plate with a hidden beam is used as a bottom plate of a laminated slab and is characterized by comprising a low bottom plate, a hidden beam and a high bottom plate which are sequentially connected, wherein the lower surface of the hidden beam is lower than or flush with the lower surface of the low bottom plate, the lower surface of the high bottom plate and the lower surface of the hidden beam have a height difference, the upper surface of the hidden beam is higher than the upper surfaces of the high bottom plate and the low bottom plate, and the high bottom plate, the hidden beam and the low bottom plate are integrally cast; wherein:
a closed stirrup is arranged in the hidden beam;
the first bottom plate steel bars and the second bottom plate steel bars are perpendicular to the hidden beam respectively;
one end of the first bottom plate steel bar is positioned in the low bottom plate, and the other end of the first bottom plate steel bar penetrates through the hidden beam and is bent twice to enable the extending section to extend out of a certain anchoring length above the high bottom plate;
one end of the second bottom plate steel bar is positioned in the high bottom plate, and the other end of the second bottom plate steel bar penetrates through the hidden beam and is bent twice to enable the extending section to extend out of the upper portion of the low bottom plate by a certain anchoring length.
2. The precast floor slab with hidden beams according to claim 1, wherein longitudinal reinforcing bars perpendicular to the closed stirrups are further provided in the hidden beams.
3. The precast floor slab with the hidden beam according to claim 1, further comprising a plurality of reinforcing bottom ribs, wherein the reinforcing bottom ribs are parallel to the hidden beam and are arranged on the first floor reinforcing steel bars or the second floor reinforcing steel bars.
4. The precast floor slab with the hidden beam according to any one of claims 1 to 3, further comprising first and second truss reinforcing bars respectively located at both sides of the hidden beam; the bottoms of the first truss steel bars and the second truss steel bars are respectively arranged on the first bottom plate steel bars and the second bottom plate steel bars.
5. The precast floor slab with hidden beams according to claim 4, wherein the first and second truss reinforcements are perpendicular to the hidden beam, the extension section of the second floor reinforcement is flush with the upper chord reinforcement of the first truss reinforcement, the extension section of the first floor reinforcement is flush with the upper chord reinforcement of the second truss reinforcement, and the extension sections of the first and second floor reinforcements are not less than 300mm in length;
or, the first and second truss reinforcing steel bars are parallel to the hidden beam, the extending section of the second bottom plate reinforcing steel bar is lapped on the upper chord reinforcing steel bar of the first truss reinforcing steel bar, the extending section of the first bottom plate reinforcing steel bar is lapped on the upper chord reinforcing steel bar of the second truss reinforcing steel bar, and the lengths of the extending sections of the first and second bottom plate reinforcing steel bars are not less than 200 mm.
6. A folded plate type composite slab, comprising the prefabricated bottom plate with the hidden beam as claimed in any one of claims 1 to 5, wherein a laminated layer is further cast on the prefabricated bottom plate.
7. The folding plate type composite slab according to claim 6, wherein the laminated layer comprises a high-layer plate and a low-layer plate which are integrally cast and are respectively positioned on the high bottom plate and the low bottom plate, the upper surface of the hidden beam is higher than the upper surface of the bottom-layer plate, and the upper surface of the low-layer plate is perpendicular to the end surface of the hidden beam.
8. The folding plate type laminated slab according to claim 7, wherein the upper surface of the hidden beam is higher than or flush with the upper surface of the high-rise plate.
9. A folded plate laminated slab according to claim 7 or 8, further comprising a plurality of first plate-like reinforcing bars and second plate-like reinforcing bars,
the second plate surface steel bar is positioned in the high-layer plate and is lapped with the extending end of the first bottom plate steel bar;
the first plate surface reinforcing steel bars are positioned in the low-layer plate and are in lap joint with the extending ends of the second bottom plate reinforcing steel bars.
10. A folded plate laminated slab according to claim 9, further comprising a plurality of reinforcement gluten parallel to the hidden beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022795484.7U CN213926977U (en) | 2020-11-27 | 2020-11-27 | Prefabricated bottom plate with hidden beam and folded plate type laminated slab comprising prefabricated bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022795484.7U CN213926977U (en) | 2020-11-27 | 2020-11-27 | Prefabricated bottom plate with hidden beam and folded plate type laminated slab comprising prefabricated bottom plate |
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| Publication Number | Publication Date |
|---|---|
| CN213926977U true CN213926977U (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022795484.7U Expired - Fee Related CN213926977U (en) | 2020-11-27 | 2020-11-27 | Prefabricated bottom plate with hidden beam and folded plate type laminated slab comprising prefabricated bottom plate |
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| Country | Link |
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| CN (1) | CN213926977U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704078A (en) * | 2022-05-01 | 2022-07-05 | 山西三建集团有限公司 | Method for supporting staggered platform side formwork with beams arranged between high-low floor slabs |
-
2020
- 2020-11-27 CN CN202022795484.7U patent/CN213926977U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704078A (en) * | 2022-05-01 | 2022-07-05 | 山西三建集团有限公司 | Method for supporting staggered platform side formwork with beams arranged between high-low floor slabs |
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