CN111576710A - Prestressed concrete hollow floor slab and construction method thereof - Google Patents
Prestressed concrete hollow floor slab and construction method thereof Download PDFInfo
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- CN111576710A CN111576710A CN202010401521.3A CN202010401521A CN111576710A CN 111576710 A CN111576710 A CN 111576710A CN 202010401521 A CN202010401521 A CN 202010401521A CN 111576710 A CN111576710 A CN 111576710A
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- floor slab
- prestressed concrete
- plate body
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- hollow floor
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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
- E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
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Abstract
The invention discloses a prestressed concrete hollow floor slab and a construction method thereof, and relates to the technical field of precast floor slabs, wherein the prestressed concrete hollow floor slab comprises a slab body, transverse ribs and longitudinal ribs, wherein the transverse ribs are arranged on the top surface of the slab body, the longitudinal ribs are arranged on the top surface and the bottom surface of the slab body, the side wall of the slab body is provided with side wall grooves, and the two sides of the top surface of the slab body are provided with transverse rib grooves; the prestressed concrete hollow floor slab has the advantages that the splicing position of the floor slab is not easy to crack, the crack resistance is strong, the integrity is good, the floor slab is not easy to damage and unfilled corners, the actual production, the hoisting and the transportation are very convenient, in addition, the superposed production can be realized, the production field requirement is obviously reduced, the land cost is greatly saved, the production period is fast, the traditional floor slab production process can be continued, and the production is mature and reliable.
Description
Technical Field
The invention relates to the technical field of precast floor slabs, in particular to a prestressed concrete hollow floor slab and a construction method thereof.
Background
The hollow prefabricated component board of reinforced concrete that now commonly used is rectangular shape, and the centre is opened has the through-hole, and this kind of hollow prefabricated component board has advantages such as the cost is low, convenient construction, preparation are easy, when assembling the floor, shelves hollow prefabricated component board on wall or roof beam earlier, then hangs mould at adjacent prefabricated component board concatenation department and pours the seam with concrete, forms hollow floor, but this kind of hollow prefabricated component board assembles the floor and has not enoughly: the hanging mould at the splicing position of the adjacent prefabricated component plates is grouted by concrete, the splicing position is easy to crack and poor in crack resistance, and the seam position is easy to leak; the connection force between the adjacent prefabricated component plates is weak, the integrity of the assembled floor slab is poor, after long-time exploration and improvement, the bottoms of the two sides of the slab body are provided with lower convex blocks which are tightly leaned to play a role of a template, concrete can be directly poured in the groove-shaped cavity, and a mould is not required to be hung at the splicing position; the design improvement well solves the problems of easy cracking, poor crack resistance, poor integrity and the like at the splicing part. However, the construction brings great inconvenience to actual production, hoisting and transportation, the damage rate of the corner convex blocks is high, the production cost cannot be effectively controlled, the construction cannot be popularized all the time, and the splicing problem of the rectangular prefabricated member floor slab at the present stage is still a main technical difficulty.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a prestressed concrete hollow floor slab and a construction method thereof.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the utility model provides a hollow floor of prestressed concrete, includes the plate body, horizontal muscle, indulges the muscle, horizontal muscle sets up in the plate body top surface, indulges the muscle and sets up in plate body top surface and bottom surface, and the plate body lateral wall is equipped with the lateral wall groove, and plate body top surface both sides are equipped with horizontal muscle groove.
On the basis of the technical scheme, the transverse rib groove comprises a first transverse rib groove and a second transverse rib groove.
On the basis of the technical scheme, the first transverse rib groove and the second transverse rib groove are perpendicular to the plate body.
On the basis of the technical scheme, the first transverse rib groove is 1/3 the thickness of the plate body, the second transverse rib groove is 2/3 the thickness of the plate body, and the first transverse rib groove and the second transverse rib groove are uniformly and alternately arranged.
On the basis of the technical scheme, the two side walls of the plate body are provided with side wall grooves.
On the basis of the technical scheme, the side wall groove is parallel to the longitudinal rib and longitudinally extends to the through plate body along the plate body.
On the basis of the technical scheme, at least one through hole is formed in the plate body.
On the basis of the technical scheme, the transverse ribs correspond to the transverse rib grooves one to one, and the transverse ribs do not extend out of the side walls of the plate body.
On the basis of the technical scheme, the longitudinal ribs extend out of two ends of the plate body.
On the basis of the technical scheme, the distance between the longitudinal ribs and the two ends of the plate body is 30-60 mm.
On the basis of the technical scheme, the construction method of the prestressed concrete hollow floor slab comprises the following steps:
hoisting a prestressed concrete hollow floor slab;
checking the prestressed concrete hollow floor slabs to enable the floor slabs to be orderly arranged, enabling the transverse rib grooves to correspond one to one, and enabling the notches of the adjacent side wall grooves to be matched and aligned;
placing a steel bar in the first transverse bar groove;
fourthly, laying a pipeline on the side wall groove;
binding or welding transverse bars in the first transverse bar grooves and the second transverse bar grooves of the adjacent prestressed concrete hollow floor slabs in a one-to-one correspondence manner;
sixthly, pouring concrete in the transverse rib grooves and the side wall grooves;
and step six, pouring concrete in the transverse rib grooves and the side wall grooves, solidifying and forming to finish the floor slab construction.
Compared with the prior art, the invention has the advantages that:
(1) compared with the prior art, the prestressed concrete hollow floor slab has the advantages that the splicing position of the floor slab is not easy to crack, the crack resistance is strong, the integrity is good, the corners are not easy to damage and lack corners, the actual production, hoisting and transportation are very convenient, and the technical problem that the cracking and the convenient production and transportation cannot be simultaneously achieved in the existing precast floor slab construction is solved.
(2) The prestressed concrete hollow floor slab has high hollow rate, the transverse rib groove improves the integral hollow rate on the basis of ensuring the structural strength, the self weight is reduced, and the transportation cost is reduced.
(3) In the construction process of the prestressed concrete hollow floor slab, two adjacent plates are bound or welded by reinforcing steel bars and cast-in-place, so that the anti-cracking tensile strength between the plates can be increased, and the prestressed concrete hollow floor slab is connected with the transverse bars into a whole by welding or other rigid connections, so that the construction floor slab has better integrity.
(4) The prestressed concrete hollow floor slab can realize superimposed production, obviously reduces the requirement of production field, saves a large amount of land cost, has quick production period, can continue to use the traditional floor slab production process, and is mature and reliable.
Drawings
FIG. 1 is a schematic structural view of a prestressed concrete hollow floor slab according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an end face of a prestressed concrete hollow floor slab according to an embodiment of the present invention;
FIG. 3 is a schematic side view of a prestressed concrete hollow floor slab according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a splicing construction structure of a prestressed concrete hollow floor slab according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a spliced end face structure of a prestressed concrete hollow floor slab according to an embodiment of the present invention;
fig. 6 is a schematic top view of a splicing surface of a prestressed concrete hollow floor slab according to an embodiment of the present invention.
In the figure: 1-plate body, 2-transverse rib, 3-longitudinal rib, 4-through hole, 5-side wall groove, 6-transverse rib groove frame, 7-first transverse rib groove and 8-second transverse rib groove.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic structural diagram of a prestressed concrete hollow floor slab according to an embodiment of the present invention includes a slab body 1, transverse ribs 2, and longitudinal ribs 3. At least one through hole 4 is arranged in the plate body 1, double-faced cloth ribs are adopted, transverse ribs 2 and longitudinal ribs 3 are embedded in the plate body 1, the top surface of the plate body 1 is provided with the transverse ribs 2 which are arranged in a staggered mode, the longitudinal ribs 3 are arranged, and the longitudinal ribs 3 are evenly arranged on the bottom surface of the plate body 1. Horizontal muscle groove 6 is still equipped with on plate body 1 top surface both sides, and horizontal muscle groove 6 in both sides is laid in pairs, and horizontal muscle 2 both ends all stretch into in a pair of horizontal muscle groove 6 but do not stretch out outside horizontal muscle groove 6.
Fig. 2 is a schematic structural view of an end face of a prestressed concrete hollow floor slab according to an embodiment of the present invention; horizontal muscle 2 sets up in plate body 1 top surface, indulges muscle 3 and sets up in plate body 1 top surface and bottom surface, and plate body 1 lateral wall is equipped with lateral wall groove 5.
Referring to fig. 3, which is a schematic side structure view of a prestressed concrete hollow floor slab according to an embodiment of the present invention, the transverse reinforcement groove 6 includes a first transverse reinforcement groove 7 and a second transverse reinforcement groove 8. First horizontal muscle groove 7 and the equal perpendicular to plate body 1 of second horizontal muscle groove 8, first horizontal muscle groove 7 runs through lateral wall groove 5 but does not run through, and second horizontal muscle groove 8 just runs through lateral wall groove 5 for lateral wall groove 5, first horizontal muscle groove 7, the horizontal muscle groove 8 intercommunication of second create convenient condition for cast-in-place construction.
Specifically, in this embodiment, the first transverse rib groove 7 is formed by the thickness 1/6 of the plate body 1, the second transverse rib groove 8 is formed by the thickness 2/3 of the plate body 1, and the first transverse rib groove 7 and the second transverse rib groove 8 are uniformly staggered. Two side walls of the plate body 1 are provided with side wall grooves 5. The side wall grooves 5 are parallel to the longitudinal ribs 3 and extend longitudinally along the plate body 1 to penetrate through the plate body 1.
The longitudinal ribs 3 extend out of two ends of the plate body 1. The distance between the two ends of the longitudinal bar 3 extending out of the plate body 1 is 30-60mm, and the distance can be specifically determined according to the construction requirements of beam-slab combination.
Referring to fig. 4, which is a schematic diagram of a splicing construction structure of a prestressed concrete hollow floor slab in an embodiment of the present invention, a construction method of a prestressed concrete hollow floor slab includes the following steps:
hoisting a prestressed concrete hollow floor slab, adjusting the prefabricated concrete hollow floor slab to enable the bottom surface of the floor slab to face downwards, and placing the prestressed concrete hollow floor slab at a construction position;
secondly, inspecting the prestressed concrete hollow floor slabs to enable the floor slabs to be arranged orderly, wherein the transverse rib grooves 6 correspond to one another, particularly, the first transverse rib grooves 7 are spliced with the adjacent corresponding first transverse rib grooves 7, the second transverse rib grooves 8 are spliced with the adjacent corresponding second transverse rib grooves 8, the notches of the adjacent side wall grooves 5 are communicated and aligned in a matching mode, and the side wall grooves 5, the first transverse rib grooves 7 and the second transverse rib grooves 8 are ensured to be communicated without sundries blocking;
placing a steel bar in the first transverse bar groove 7;
fourthly, laying pipelines on the side wall grooves 5, and laying the pipelines in advance according to the design requirements of the arranged pipelines;
binding or welding the transverse ribs 2 in the first transverse rib groove 7 and the second transverse rib groove 8 of the adjacent prestressed concrete hollow floor slab in a one-to-one correspondence manner;
step six, pouring concrete in the transverse rib grooves 6 and the side wall grooves 5, adopting spray irrigation to pour, filling the cavity formed by the side wall grooves 5, the first transverse rib grooves 7 and the second transverse rib grooves 8 with the concrete, tamping and leveling the surface;
and sixthly, pouring concrete in the transverse rib grooves 6 and the side wall grooves 5, solidifying and forming to finish the floor slab construction.
Specifically, fig. 5 is a schematic diagram of a spliced end face structure of a prestressed concrete hollow floor slab in an embodiment of the present invention, and fig. 6 is a schematic diagram of a top view structure of a spliced face of a prestressed concrete hollow floor slab in an embodiment of the present invention, so that a pair of constructions in this embodiment can be completed. Compared with the prior art, the prestressed concrete hollow floor slab has the advantages that the splicing position of the floor slab is not easy to crack, the crack resistance is strong, the integrity is good, the corners are not easy to damage and lack corners, the actual production, hoisting and transportation are very convenient, and the technical problem that the cracking and the convenient production and transportation cannot be simultaneously achieved in the existing precast floor slab construction is solved. The prestressed concrete hollow floor slab has high hollow rate, the transverse rib groove improves the integral hollow rate on the basis of ensuring the structural strength, the self weight is reduced, and the transportation cost is reduced.
In the construction aspect, two adjacent plates are bound or welded through reinforcing steel bars and cast-in-place treatment is applied in the construction process of the prestressed concrete hollow floor slab, so that the anti-cracking tensile strength between the plates can be increased, and the prestressed concrete hollow floor slab is connected with the transverse bars into a whole through welding or other rigid connection, so that the construction floor slab has better integrity. The prestressed concrete hollow floor slab can realize superimposed production, obviously reduces the requirement of production field, saves a large amount of land cost, has quick production period, can continue to use the traditional floor slab production process, and is mature and reliable.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (11)
1. The utility model provides a hollow floor of prestressed concrete which characterized in that: including plate body (1), horizontal muscle (2), indulge muscle (3), horizontal muscle (2) set up in plate body (1) top surface, indulge muscle (3) set up in plate body (1) top surface and bottom surface, plate body (1) lateral wall is equipped with lateral wall groove (5), plate body (1) top surface both sides are equipped with horizontal muscle groove (6).
2. A prestressed concrete hollow floor slab as claimed in claim 1, wherein: the transverse rib groove (6) comprises a first transverse rib groove (7) and a second transverse rib groove (8).
3. A prestressed concrete hollow floor slab as claimed in claim 2, wherein: the first transverse rib groove (7) and the second transverse rib groove (8) are perpendicular to the plate body (1).
4. A prestressed concrete hollow floor slab as claimed in any one of claims 2 or 3, wherein: first horizontal muscle groove (7) do plate body (1) thickness 1/3, second horizontal muscle groove (8) do plate body (1) thickness 2/3, just first horizontal muscle groove (7) with the even staggered arrangement of second horizontal muscle groove (8).
5. A prestressed concrete hollow floor slab as claimed in claim 1, wherein: the two side walls of the plate body (1) are provided with the side wall grooves (5).
6. A prestressed concrete hollow floor slab as claimed in claim 1, wherein: the side wall groove (5) is parallel to the longitudinal rib (3) and longitudinally extends to penetrate through the plate body (1) along the plate body (1).
7. A prestressed concrete hollow floor slab as claimed in claim 1, wherein: at least one through hole (4) is arranged in the plate body (1).
8. A prestressed concrete hollow floor slab as claimed in claim 1, wherein: the transverse ribs (2) correspond to the transverse rib grooves (6) one by one, and the transverse ribs (2) do not extend out of the side wall of the plate body (1).
9. A prestressed concrete hollow floor slab as claimed in claim 1, wherein: the longitudinal ribs (3) extend out of two ends of the plate body (1).
10. A prestressed concrete hollow floor slab as claimed in claim 1, wherein: the distance between the longitudinal ribs (3) extending out of the two ends of the plate body (1) is 30-60 mm.
11. A construction method of a prestressed concrete hollow floor slab is characterized by comprising the following steps:
hoisting a prestressed concrete hollow floor slab;
checking the prestressed concrete hollow floor slabs to enable the floor slabs to be arranged orderly, wherein the transverse rib grooves (6) correspond to one another one by one, and the notches of the adjacent side wall grooves (5) are matched and aligned;
placing a steel bar in the first transverse bar groove (7);
fourthly, laying a pipeline on the side wall groove (5);
binding or welding the transverse ribs (2) in the first transverse rib groove (7) and the second transverse rib groove (8) of the adjacent prestressed concrete hollow floor slab in a one-to-one correspondence manner;
sixthly, pouring concrete in the transverse rib grooves (6) and the side wall grooves (5);
and sixthly, pouring concrete in the transverse rib grooves (6) and the side wall grooves (5) for solidification and forming to finish the floor slab construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010401521.3A CN111576710A (en) | 2020-05-13 | 2020-05-13 | Prestressed concrete hollow floor slab and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010401521.3A CN111576710A (en) | 2020-05-13 | 2020-05-13 | Prestressed concrete hollow floor slab and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111576710A true CN111576710A (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010401521.3A Pending CN111576710A (en) | 2020-05-13 | 2020-05-13 | Prestressed concrete hollow floor slab and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111576710A (en) |
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2020
- 2020-05-13 CN CN202010401521.3A patent/CN111576710A/en active Pending
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