CN212613272U - UHPC (ultra high performance polycarbonate) embedded-free steel bar superposed cast-in-place light floor slab and floor slab joint structure - Google Patents
UHPC (ultra high performance polycarbonate) embedded-free steel bar superposed cast-in-place light floor slab and floor slab joint structure Download PDFInfo
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- CN212613272U CN212613272U CN202120077556.6U CN202120077556U CN212613272U CN 212613272 U CN212613272 U CN 212613272U CN 202120077556 U CN202120077556 U CN 202120077556U CN 212613272 U CN212613272 U CN 212613272U
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Abstract
The utility model discloses a cast-in-place light floor of UHPC exempt from to bury reinforcing bar coincide, including prefabricated portion and cast-in-place portion, prefabricated portion includes UHPC roof, UHPC bottom plate and a plurality of diaphragm capsules, the diaphragm capsule sets up between UHPC roof and UHPC bottom plate, is provided with the interval between two adjacent diaphragm capsules, four bights of UHPC roof and UHPC bottom plate respectively with four diaphragm capsules integrated casting that correspond the position and form; cast-in-place concrete is filled among the multiple mould boxes to form a cast-in-place part, and the edge of the cast-in-place part is flush with the edges of the UHPC top plate and the UHPC bottom plate. The utility model discloses a floor piece structure, including first floor and the second floor of structure as above, the prefabricated portion of first floor and the prefabricated portion of second floor closely piece at the horizontal direction and form the floor piece, and the cast-in-place portion of first floor and second floor links together the two. The UHPC bottom plate and the UHPC top plate have high strength, and steel bars do not need to be arranged when cast-in-place concrete is poured, so that the construction efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of the assembly type structure, specifically speaking, the utility model relates to a UHPC exempts from to bury cast-in-place light floor of reinforcing bar coincide and floor piece structure.
Background
Compared with a reinforced concrete solid floor, the reinforced concrete cavity structure floor has the advantages of low cost, less material consumption, light weight and good sound insulation effect. The construction method of the reinforced concrete cavity structure floor slab in the prior art mainly includes the steps of erecting a bottom formwork of the cavity structure floor slab, binding reinforcing steel bars, placing side formworks, placing a mold box of the cavity structure on the bottom formwork, pouring concrete in a cavity enclosed by the bottom formwork and the side formworks, removing the side formworks and the bottom formwork after the concrete reaches a certain strength, and painting mortar on the bottom surface of the floor slab to form the integral cavity structure floor slab. The laminated cast-in-place light floor in the prior art has the following problems: firstly, when the prefabricated part is produced, a steel bar mesh and an embedded part need to be manufactured and placed, so that more time is consumed, and some structural designs can also reserve steel bars to stretch out of the prefabricated part, so that the production mold is complex and the transportation and the hoisting are inconvenient; secondly, steel bars need to be bound and placed on site, so that the construction time on site is long, and the construction efficiency is difficult to improve; and at present, the cavity structure mold box is complex in structure, low in strength and provided with extending reinforcing steel bars, so that the production cost is high, and the cavity structure mold box is inconvenient to transport and construct and easy to damage. The ultra-high performance concrete (UHPC) is a novel cement-based material with ultra-high strength, ultra-high toughness, ultra-durability and little shrinkage and creep, has excellent mechanical and physical properties, can prolong the service life of a building structure and improve the casting safety performance.
In summary, it is urgently needed to provide a UHPC embedded-free reinforced composite cast-in-place lightweight floor slab, which solves the technical problems in the prior art that a reinforced mesh needs to be placed on a prefabricated part of a composite floor slab, a production mold is complex, a cavity structure mold box structure is complex, and transportation is inconvenient.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the utility model provides a UHPC exempts from to bury cast-in-place light floor of reinforcing bar coincide, solves the prefabricated part of the coincide floor that exists among the prior art and need place reinforcing bar net piece, production mould is complicated, and cavity structure diaphragm capsule structure is complicated, the inconvenient technical problem of transportation.
In order to realize the purpose, the utility model discloses the technical scheme who takes does:
a UHPC (ultra high performance concrete) embedded-free steel bar superposed cast-in-place light floor slab comprises a prefabricated part and a cast-in-place part, wherein the prefabricated part comprises a UHPC top plate, a UHPC bottom plate and a plurality of mould boxes, the mould boxes are arranged between the UHPC top plate and the UHPC bottom plate, a space is arranged between every two adjacent mould boxes, and four corners of the UHPC top plate and four corners of the UHPC bottom plate are respectively cast and formed with the four mould boxes at corresponding positions in an integrated manner; cast-in-place concrete is filled among the mould boxes to form a cast-in-place part, and the edge of the cast-in-place part is flush with the edges of the UHPC top plate and the UHPC bottom plate. In the scheme, because the UHPC bottom plate and the UHPC top plate have high strength, reinforcing steel bars do not need to be arranged when cast-in-place concrete is poured, so that the construction efficiency on site is greatly improved; the UHPC bottom plate and the UHPC top plate are connected together through four die boxes at the corners, and the UHPC bottom plate and the UHPC top plate are good in integrity, high in strength, and strong in bending resistance and pressure resistance.
On the basis of the above embodiment, in another improved embodiment, one of the mold boxes disposed at the middle position of the bottom plate is integrally cast with the UHPC top plate and the UHPC bottom plate. By the arrangement, the connection strength between the UHPC top plate and the UHPC bottom plate is further improved, and the integrity of the prefabricated part is enhanced.
In addition to the above embodiment, in another improved embodiment, at least one pouring hole is opened on the UHPC top plate, and the pouring hole is communicated with the cast-in-place part. By the arrangement, cast-in-place concrete can be poured to the intervals among the plurality of die boxes through the pouring holes, and the construction simplicity is improved.
On the basis of the above embodiment, in another modified embodiment, the inside of the mold box is provided as a cavity structure, or the inside of the mold box is filled with one of foam, polystyrene resin, ceramsite concrete or foam concrete. By the arrangement, the whole weight of the composite floor slab can be reduced, building materials are saved, and a cavity structure formwork does not need to be additionally arranged on a construction site like in the technology.
On the basis of the above embodiment, in another modified embodiment, four of the mold boxes connected to four corners of the UHPC top plate and the UHPC bottom plate are filled with UHPC concrete. By so arranging, the overall strength and integrity of the prefabricated part can be further improved.
In another improved embodiment, the cast-in-place concrete of the cast-in-place part is one of ceramsite concrete, foam concrete and fiber concrete. Set up like this, can reduce the weight of whole coincide floor on the one hand, on the other hand need not to place the reinforcing bar at the scene, reduces the operation degree of difficulty of cast in situ concrete.
On the basis of the above embodiment, in another improved embodiment, the mold box is made of metal or thermosetting plastic. Thermosetting plastics refer to plastics which cannot be softened again after being heated or cured under certain conditions and cannot be repeatedly processed, and include phenolics, aminoplasts and the like. By the arrangement, the mold box has stronger pressure resistance when cast-in-place concrete is poured; and is not easy to break in the transportation process.
On the basis of the above embodiment, in another improved embodiment, none of the plurality of die boxes disposed on the UHPC base plate exceeds the edge of the UHPC base plate. By the arrangement, the die box can not protrude out of the UHPC bottom plate, and the production and hoisting are convenient; when the edge of the UHPC bottom plate exceeds the side face of the die box, the cast-in-place concrete can completely wrap the vertical side face of the die box to form an effective protective layer for the die box.
The utility model provides a floor piece structure, including first floor and second floor, the structure of first floor and second floor with last UHPC exempt from to bury the cast-in-place light floor of reinforcing bar coincide the same, the prefabricated portion of first floor with the prefabricated portion of second floor closely pieces together at the horizontal direction and forms the floor piece, the cast-in-place portion of first floor with the cast-in-place portion of second floor will first floor and second floor link together. In the floor splicing structure in the scheme, two UHPC (ultra high performance concrete) embedded-free steel bars are superposed and cast-in-place light floors are horizontally and densely spliced, the UHPC bottom plate is used as a bottom die, and cast-in-place concrete is poured into the space between the plurality of die boxes without additionally erecting the bottom die, so that the construction efficiency and the assembly rate are improved; the cast-in-place concrete is simultaneously connected with the plurality of mould boxes, the UHPC bottom plate and the UHPC top plate, and the combination capability between the cast-in-place concrete and the UHPC embedded-free steel bar superposed cast-in-place light floor slab is strong; when the mould box is in a cavity structure, the weight of the whole composite floor slab can be reduced; the two UHPC non-buried steel bar superposed cast-in-place light floor slabs can be connected through cast-in-place concrete, no steel bar needs to be arranged on a construction site, the construction efficiency is high, and the labor intensity is low.
The technical scheme of the utility model the beneficial technological effect who gains is:
1. the UHPC embedded-free steel bar superposed cast-in-place light floor slab has the advantages that the UHPC bottom plate and the UHPC top plate of the prefabricated part are connected together through the mold box to form a whole, the structure is simple, the integrity is good, the rigidity is high, and the bending resistance and the compression resistance are strong; the UHPC bottom plate can be directly used as a bottom die of the laminated floor slab, no additional bottom die is required to be erected, the space between the UHPC bottom plate and the UHPC top plate can be filled with concrete by pouring the concrete into the space between the plurality of die boxes, and the laminated cast-in-place floor slab is formed, so that the assembly rate of the whole building is effectively improved; a plurality of mould boxes in the plurality of mould boxes are arranged into a cavity structure, so that the weight of the whole UHPC (ultra high performance concrete) embedded-free steel bar superposed cast-in-place light floor is effectively reduced, and a superposed cavity structure floor can be formed; because the UHPC bottom plate and the UHPC top plate have high strength, no reinforcing steel bar needs to be arranged when the cast-in-place concrete is poured, and the construction efficiency on site is greatly improved.
2. The utility model discloses a coincide floor, two UHPC exempt from to bury the cast-in-place light floor level of reinforcing bar coincide and closely piece together, UHPC bottom plate is as the die block, to pouring cast in situ concrete in the interval of a plurality of diaphragm capsules can, need not to prop up in addition and establish the die block, improved efficiency of construction and assembly rate; the cast-in-place concrete is simultaneously connected with the plurality of mould boxes, the UHPC bottom plate and the UHPC top plate, and the combination capability between the cast-in-place concrete and the UHPC embedded-free steel bar superposed cast-in-place light floor slab is strong; when the mould box is in a cavity structure, the weight of the whole composite floor slab can be reduced; the two UHPC non-buried steel bar superposed cast-in-place light floor slabs can be connected through cast-in-place concrete, no steel bar needs to be arranged on a construction site, the construction efficiency is high, and the labor intensity is low.
Drawings
The accompanying drawings, which form a part hereof, 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 without undue limitation.
Fig. 1 is a schematic structural view of a prefabricated part of a UHPC embedded-free rebar laminated cast-in-place lightweight floor slab of embodiment 1;
FIG. 2 is a schematic view showing the construction of the prefabricated part of example 1 after concealing the top plate of UHPC;
FIG. 3 is a vertical sectional view of a part of a die box in a preform part of example 1;
FIG. 4 is a schematic view showing a modified example of example 1 in which a UHPC ceiling panel is hidden in a preform;
FIG. 5 is a vertical sectional view of a part of a die box in a preform in a modification of embodiment 1;
fig. 6 is a schematic structural view of a UHPC embedded-free rebar laminated cast-in-place lightweight floor slab of embodiment 2;
fig. 7 is a schematic perspective view of a floor slab joint structure according to example 3;
FIG. 8 is a front view of the floor slab joint structure of FIG. 7;
fig. 9 is a schematic perspective view of a floor panel joint structure according to example 4.
Reference numerals:
1-UHPC top plate, 2-mould box, 3-UHPC bottom plate, 4-pouring hole, 5-prefabricated part, 6-cast-in-place part, 01-first floor, 02-second floor and 03-floor piece.
Detailed Description
The present invention will be described in detail with reference to the drawings, which are provided for illustrative and explanatory purposes only and should not be construed as limiting the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
Example 1
Referring to the illustrations of fig. 1 to 3, the UHPC-embedded-free steel bar superposed cast-in-place lightweight floor slab in the embodiment includes a prefabricated part and a cast-in-place part (not shown in the drawings), wherein the prefabricated part includes a UHPC top plate, a UHPC bottom plate and a plurality of mold boxes, the mold boxes are arranged between the UHPC top plate and the UHPC bottom plate, a space is arranged between two adjacent mold boxes, and four corners of the UHPC top plate and the UHPC bottom plate are respectively cast and molded with four mold boxes at corresponding positions; cast-in-place concrete is filled among the multiple mould boxes to form a cast-in-place part, and the edge of the cast-in-place part is flush with the edges of the UHPC top plate and the UHPC bottom plate. In the scheme, because the UHPC bottom plate and the UHPC top plate have high strength, reinforcing steel bars do not need to be arranged when cast-in-place concrete is poured, so that the construction efficiency on site is greatly improved; the UHPC bottom plate and the UHPC top plate are connected together through four die boxes at the corners, and the UHPC bottom plate and the UHPC top plate are good in integrity, high in strength, and strong in bending resistance and pressure resistance.
Referring to the schematic diagram of fig. 3, in the present embodiment, four corners of the UHPC top plate and the UHPC bottom plate are respectively integrally cast with side walls of four mold boxes, and the interior of the mold boxes is configured as a cavity structure; this makes it possible to reduce the weight of the entire preform. In other embodiments, the interior of the membrane shell may be filled with one of polystyrene resin/ceramsite concrete/foam concrete, which can reduce the weight of the entire floor slab.
On the basis of the embodiment, in another improved embodiment, one of the mold boxes arranged at the middle position of the bottom plate is integrally cast and molded with the UHPC top plate and the UHPC bottom plate. By the arrangement, the connection strength between the UHPC top plate and the UHPC bottom plate is further improved, and the integrity of the prefabricated part is enhanced.
Referring to the schematic drawings of fig. 4 and 5, in another modified embodiment, four mold boxes connected with four corners of a UHPC top plate and a UHPC bottom plate are filled with UHPC concrete, and other mold boxes are hollow. With the adoption of the arrangement, the four die boxes at the four corners can connect the UHPC top plate and the UHPC bottom plate into a whole, so that the integral strength and the integrity of the prefabricated part can be further improved, and the whole weight of the prefabricated part can be reduced by other die boxes.
In a further improved embodiment, the interior of the mould box may also be filled with concrete. By the arrangement, the whole weight of the composite floor slab can be reduced, building materials are saved, and a cavity structure formwork does not need to be additionally arranged on a construction site like in the technology.
In the embodiment, the die box is made of metal materials, so that the forming is fast, the preparation is convenient, and the impact resistance is strong. In other improved embodiments, the mold box may be made of a thermosetting plastic. By the arrangement, the mold box has stronger pressure resistance when cast-in-place concrete is poured; and is not easy to break in the transportation process.
Referring to the schematic of FIG. 1, none of the plurality of cartridges disposed on the UHPC base plate exceeds the edge of the UHPC base plate. By the arrangement, the die box can not protrude out of the UHPC bottom plate, and the production and hoisting are convenient; when the edge of the UHPC bottom plate exceeds the side face of the die box, the cast-in-place concrete can completely wrap the vertical side face of the die box to form an effective protective layer for the die box.
Example 2
Referring to the schematic view of fig. 6, the UHPC composite cast-in-place lightweight floor slab without embedded steel bars in this embodiment includes a prefabricated part and a cast-in-place part (not shown). The preform of embodiment 2 is substantially the same in structure as embodiment 1, except that: at least one pouring hole is formed in the UHPC top plate and communicated with the cast-in-place part. By the arrangement, cast-in-place concrete can be poured to the intervals among the plurality of die boxes through the pouring holes, and the construction simplicity is improved.
Example 3
Referring to the schematic drawings of fig. 7 and 8, the floor slab joint structure in this embodiment includes a first floor slab and a second floor slab, the structures of the first floor slab and the second floor slab are the same as the structure of the UHPC embedded-free steel bar laminated cast-in-place lightweight floor slab in embodiment 1, the precast sections of the first floor slab and the second floor slab are closely jointed in the horizontal direction to form a floor slab joint, and the cast-in-place section of the first floor slab and the cast-in-place section of the second floor slab connect the first floor slab and the second floor slab together. The cast-in-place concrete of the cast-in-place part in this embodiment is ceramsite concrete, and in other embodiments, foam concrete or fiber concrete may be used. Set up like this, can reduce the weight of whole coincide floor on the one hand, on the other hand need not to place the reinforcing bar at the scene, reduces the operation degree of difficulty of cast in situ concrete.
Referring to the schematic drawings of fig. 1 and fig. 7, the construction steps of the floor slab joint structure in the embodiment are briefly described:
firstly, arranging a vertical support, hoisting and positioning a first floor slab, and placing the first floor slab on the top side of the vertical support;
then, hoisting a second floor slab to be placed on the top side of the vertical support, and positioning the second floor slab on one side of the first floor slab to form close splicing in the horizontal direction;
and finally, erecting templates on the peripheries of the first floor slab and the second floor slab, inserting the concrete conveying pipe into the space between the mold boxes, pumping concrete between the UHPC top plate and the UHPC bottom plate, and curing and forming.
In the floor splicing structure in the scheme, two UHPC (ultra high performance concrete) embedded-free steel bars are superposed and cast-in-place light floors are horizontally and densely spliced, the UHPC bottom plate is used as a bottom die, and cast-in-place concrete is poured into the space between the plurality of die boxes without additionally erecting the bottom die, so that the construction efficiency and the assembly rate are improved; the cast-in-place concrete is simultaneously connected with the plurality of mould boxes, the UHPC bottom plate and the UHPC top plate, and the combination capability between the cast-in-place concrete and the UHPC embedded-free steel bar superposed cast-in-place light floor slab is strong; when the mould box is in a cavity structure, the weight of the whole composite floor slab can be reduced; the two UHPC non-buried steel bar superposed cast-in-place light floor slabs can be connected through cast-in-place concrete, no steel bar needs to be arranged on a construction site, the construction efficiency is high, and the labor intensity is low.
Example 4
Referring to the schematic diagram of fig. 9, the floor slab joint structure in this embodiment includes a first floor slab and a second floor slab, the structures of the first floor slab and the second floor slab are the same as the structure of the UHPC cast-in-place lightweight floor slab without embedded steel bars in embodiment 2, the prefabricated part of the first floor slab and the prefabricated part of the second floor slab are closely jointed in the horizontal direction to form a floor slab joint, and cast-in-place concrete is poured between the UHPC top plate and the UHPC bottom plate of the mold box of the first floor slab and the second floor slab through the pouring hole to form a cast-in-place part, so as to connect the first floor slab and the second floor slab together.
The construction method of the floor slab joint structure in this embodiment is different from that in embodiment 3 in that cast-in-place concrete is conveyed through a pouring hole formed in a UHPC top plate, and other steps are the same.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A UHPC (ultra high performance concrete) embedded-free steel bar superposed cast-in-place light floor slab is characterized by comprising a prefabricated part and a cast-in-place part, wherein the prefabricated part comprises a UHPC top plate, a UHPC bottom plate and a plurality of mould boxes, the mould boxes are arranged between the UHPC top plate and the UHPC bottom plate, a space is arranged between every two adjacent mould boxes, and four corners of the UHPC top plate and four corners of the UHPC bottom plate are respectively cast and formed with four mould boxes at corresponding positions in an integrated manner; cast-in-place concrete is filled among the mould boxes to form a cast-in-place part, and the edge of the cast-in-place part is flush with the edges of the UHPC top plate and the UHPC bottom plate.
2. The UHPC composite cast-in-place lightweight floor slab without the embedded steel bars as claimed in claim 1, wherein one of the mould boxes arranged at the middle position of the bottom plate is integrally cast and formed with the UHPC top plate and the UHPC bottom plate.
3. The UHPC embedded-free steel bar superposition cast-in-place lightweight floor slab as claimed in claim 2, wherein the UHPC top slab is provided with at least one pouring hole, and the pouring hole is communicated with the cast-in-place part.
4. The UHPC embedded-free steel bar superposition cast-in-place lightweight floor slab as claimed in any one of claims 1-3, wherein the inside of the mould box is provided with a cavity structure, or the inside of the mould box is filled with one of foam, polystyrene resin, ceramsite concrete or foam concrete.
5. The UHPC composite cast-in-place lightweight floor slab without embedded steel bars as claimed in claim 4, wherein the four mould boxes connected with the four corners of the UHPC top plate and the UHPC bottom plate are filled with UHPC concrete.
6. The UHPC embedded-free reinforced bar superposed cast-in-place lightweight floor slab as recited in claim 4, wherein the cast-in-place concrete of the cast-in-place part is one of ceramsite concrete, foam concrete or fiber concrete.
7. The UHPC composite cast-in-place lightweight floor slab without embedded steel bars as claimed in claim 4, wherein the mould box is made of metal or thermosetting plastic.
8. The UHPC composite cast-in-place lightweight floor slab of claim 4, wherein the plurality of mould boxes arranged on the UHPC bottom plate do not exceed the edge of the UHPC bottom plate.
9. A floor slab joint structure, comprising a first floor slab and a second floor slab, wherein the first floor slab and the second floor slab have the same structure as the UHPC embedded-free steel bar laminated cast-in-place lightweight floor slab of any one of claims 1 to 8, the precast part of the first floor slab and the precast part of the second floor slab are closely jointed in the horizontal direction to form a floor slab joint, and the cast-in-place part of the first floor slab and the cast-in-place part of the second floor slab connect the first floor slab and the second floor slab together.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120077556.6U CN212613272U (en) | 2021-01-13 | 2021-01-13 | UHPC (ultra high performance polycarbonate) embedded-free steel bar superposed cast-in-place light floor slab and floor slab joint structure |
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| CN202120077556.6U CN212613272U (en) | 2021-01-13 | 2021-01-13 | UHPC (ultra high performance polycarbonate) embedded-free steel bar superposed cast-in-place light floor slab and floor slab joint structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653232A (en) * | 2021-07-23 | 2021-11-16 | 福建建祥建筑科技有限责任公司 | Assembly type building floor plate and installation and construction method thereof |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653232A (en) * | 2021-07-23 | 2021-11-16 | 福建建祥建筑科技有限责任公司 | Assembly type building floor plate and installation and construction method thereof |
| CN113653232B (en) * | 2021-07-23 | 2022-09-27 | 福建建祥建筑科技有限责任公司 | Assembly type building floor plate and installation and construction method thereof |
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