CN220225921U - Keel frame connecting structure for precast floor slabs - Google Patents
Keel frame connecting structure for precast floor slabs Download PDFInfo
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- CN220225921U CN220225921U CN202320465361.8U CN202320465361U CN220225921U CN 220225921 U CN220225921 U CN 220225921U CN 202320465361 U CN202320465361 U CN 202320465361U CN 220225921 U CN220225921 U CN 220225921U
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- keel
- bending
- floor slab
- precast floor
- reinforcement
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- 238000005452 bending Methods 0.000 claims description 37
- 230000002787 reinforcement Effects 0.000 claims description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 239000012634 fragment Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model provides a keel frame connecting structure for a precast floor slab, which relates to rapid assembly of the precast floor slab, and comprises the following steps: the keel trunk is pre-buried in the prefabricated floor slab (A), and one end of the keel trunk extends out of the prefabricated floor slab (A); supporting structure sets up the fossil fragments trunk stretches out the one end of precast floor slab (A) in order to support fossil fragments trunk, in this application, with the one end pre-buried in precast floor slab (A) of fossil fragments trunk, it is provided with bearing structure to stretch out precast floor slab (A) one end, bearing structure installs on coincide roof beam (B) for precast floor slab (A) and provides the support, need not adopt the scaffold frame to support when pouring for the second time, bearing structure and fossil fragments trunk have still played the effect of increase joint strength simultaneously for precast floor slab (A) after solidifying is whole more firm.
Description
Technical Field
The utility model relates to rapid assembly of precast floor slabs, in particular to a keel frame connecting structure for precast floor slabs.
Background
The prefabricated floor slab (A) is a commonly used frame type rapid assembly group price, is formed by casting concrete twice, is cast in a prefabricated place for the first time to form the prefabricated floor slab (A), is then hoisted on the superposed beam, and is cast for the second time, so that the superposed beam and the prefabricated floor slab are connected into a whole.
The existing precast floor slab (A) adopts a reinforced keel frame as a main supporting structure, and when lap joint pouring is carried out, two ends of the precast floor slab (A) are usually required to be lapped on a superposed beam (B) and poured with concrete to form pouring nodes. According to the relevant regulations of the technical regulations of edge composite floor slab, the overlapping distance between the prefabricated floor slab (A) and the composite beam (B) is at least 250mm, so that the anchoring effect can be ensured.
In actual operation, the lap joint distance between the precast floor slab (A) and the superposed beam (B) is usually 2cm, and the requirements specified in the technical regulations of edge superposed floor slabs cannot be met, so that the built-in reinforcement keel frame of the precast floor slab (A) is used as the extension of the precast floor slab (A) to supplement the lacking length, but the reinforcement keel frame is usually built in the precast floor slab (A), when the precast floor slab (A) is installed on the superposed beam (B), the precast floor slab (A) needs to be supported by a scaffold, and the reinforcement keel frame is suspended on the superposed beam (B) instead of the surface because the reinforcement keel frame is arranged in the precast floor slab (A), and the precast floor slab (A) is only supported after concrete is solidified. This makes it necessary to maintain the use of scaffolds for a long period of time during casting, causing confusion of construction sites and increasing construction costs.
Therefore, the keel frame connecting structure applied to the precast floor slabs is lacking in the market, and the precast floor slabs (A) can be supported while the short lap joint distance is made up.
Disclosure of Invention
The utility model provides a keel frame connecting structure for a precast floor slab, which aims to support the precast floor slab and reduce the use of a scaffold on the basis of providing connecting strength for the precast floor slab.
To achieve the above object, an embodiment of the present utility model provides a keel connecting structure for a precast floor slab, comprising:
the keel trunk is pre-buried in the precast floor slab, and one end of the keel trunk extends out of the precast floor slab;
and the supporting structure is arranged at one end of the keel trunk extending out of the precast floor slab so as to support the keel trunk.
Preferably, the keel trunk comprises keel reinforcing ribs, the supporting structure comprises supporting units, each supporting unit comprises a top plate, a bottom plate and a supporting plate for connecting the top plate and the bottom plate, and the keel reinforcing ribs are fixed on the supporting plate.
Preferably, the keel main body further comprises a plurality of keel steel bar groups, each keel steel bar group comprises two keel steel bars which are arranged up and down, one ends of the two keel steel bars are used for being embedded in the prefabricated floor slab, and the other ends of the two keel steel bars are bent in opposite directions to form a first bending;
the keel reinforcement sets further comprise keel transverse reinforcement units, each keel transverse reinforcement unit comprises two keel transverse reinforcements, one keel transverse reinforcement is hooked with the keel reinforcement above the middle of each keel reinforcement set, and the other keel transverse reinforcement is hooked with the keel reinforcement below the middle of each keel reinforcement set;
the keel reinforcing steel bar set further comprises a closed-loop reinforcing steel bar, two ends of the closed-loop reinforcing steel bar are respectively bent to form a second bending and a third bending, and the second bending and the third bending are respectively hooked with the two keel transverse reinforcing steel bars;
the supporting structure is provided with a through hole for the keel transverse rib to pass through.
Preferably, the keel frame connecting structure for the precast floor slab further comprises a stirrup, one end of the stirrup is used for being embedded in the superposed beam, the other end of the stirrup is bent to form a fourth bending, and the fourth bending is hooked with any keel transverse rib.
Preferably, the keel steel bar is used for bending one end pre-buried in the precast floor slab to form a fifth bending.
Preferably, the bending angles of the first, second, third, fourth and fifth bends are greater than ninety degrees.
The scheme of the utility model has the following beneficial effects:
in this application, with the one end pre-buried in precast floor slab of fossil fragments trunk, stretch out precast floor slab one end and be provided with bearing structure, bearing structure installs for precast floor slab and provides the support on the coincide roof beam, need not adopt the scaffold frame to support when pouring for the second time, bearing structure and fossil fragments trunk have still played the effect of increase joint strength simultaneously for whole after solidifying is more firm.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a construction schematic of the present utility model;
fig. 2 is an enlarged view of the S portion of fig. 1;
fig. 3 is a schematic view of the connection of the support unit to the keel reinforcement.
[ reference numerals description ]
1-keel reinforcing ribs, 11-keel reinforcing bars, 13-keel transverse ribs, 14-closed loop ribs, 15-stirrups and 2-supporting units;
a-prefabricating floor slabs and B-superposed beams.
Description of the embodiments
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, the embodiment of the utility model provides a keel frame connecting structure for a precast floor slab, which comprises a keel main body, wherein one end of the keel main body is embedded in a precast floor slab a, the other end of the keel main body extends out of the precast floor slab a, a supporting structure is arranged at one end of the keel main body extending out of the precast floor slab a, and the gravity of the precast floor slab a acts on a superposed beam B through the keel main body and the supporting structure, so that the supporting structure plays a role in supporting a scaffold, the precast floor slab a is not needed to be supported by the scaffold in the installation process of the precast floor slab a, the extending length of the embedded keel main body can be controlled by casting the precast floor slab a for the first time, the requirement of a design rule is met, the precast floor slab a can be supported by the supporting structure in the second casting process, the lower space of the precast floor slab a is regulated, the use of the scaffold can be avoided, and the cost is reduced.
The keel backbone comprises keel reinforcing ribs 1 and keel reinforcing bar groups. The supporting structure comprises supporting units 2, each supporting unit 2 comprises a top plate, a bottom plate and a supporting plate for connecting the top plate and the bottom plate, one end of each keel reinforcing rib 1 is embedded in the prefabricated floor slab A, and the other end of each keel reinforcing rib is fixed on the supporting plate. The keel reinforcing rib 1 plays a role in supporting the prefabricated floor slab A, and the purpose of supporting is achieved through the supporting unit 2.
In this embodiment, each support structure comprises two support units 2, the bottom plates of the two support units 2 being interconnected. The supporting plate is also provided with a through hole. The whole supporting unit 2 is I-shaped, and the bottom plate increases the area of contact of backup pad and superimposed beam B, reduces contact pressure, is favorable to protecting superimposed beam B.
Each group of keel steel bars comprises two keel steel bars 11 which are arranged up and down, one ends of the two keel steel bars 11 are embedded in the prefabricated floor slab A, and the other ends of the two keel steel bars are bent in opposite directions to form a first bending.
The keel reinforcement sets further comprise keel transverse reinforcement units, each keel transverse reinforcement unit comprises two keel transverse reinforcements 13, and the two keel transverse reinforcements 13 are respectively hooked with the keel reinforcements 11 through first bending formed by the keel reinforcements 11.
Preferably, the keel ribs 13 may pass through the through holes to prevent the support plate from obstructing the keel ribs 13.
The keel reinforced bar group further comprises a closed-loop reinforced bar 14, two ends of the closed-loop reinforced bar 14 are respectively bent to form a second bending and a third bending, and the closed-loop reinforced bar 14 is connected with the two keel transverse bars 13 through the second bending and the third bending.
The keel frame connecting structure for the prefabricated floor slab further comprises stirrups 15, one ends of the stirrups 15 are embedded in the superposed beams B, the other ends of the stirrups 15 are bent to form fourth bending, and the stirrups 15 are hooked with any keel transverse ribs 13 through the fourth bending.
In this embodiment, the hook joint of stirrup 15 and fossil fragments transverse reinforcement 13 can prevent that fossil fragments trunk and stirrup 15 from breaking away from in vertical direction, and the hook joint between fossil fragments reinforcing bar 11 and fossil fragments transverse reinforcement 13, stirrup 15 can prevent that fossil fragments trunk and stirrup 15 from taking place to break away from in the horizontal direction, guarantees that fossil fragments trunk still has the effect of preventing breaking away from when being supported by bearing structure, security when reinforcing construction.
Preferably, the keel steel bar 11 is used for bending one end pre-buried in the precast floor slab A to form a fifth bending, so as to enhance the anchoring effect of the keel steel bar 11 and the precast floor slab A.
Preferably, the bending angles of the first, second, third, fourth and fifth bends are greater than ninety degrees. In this embodiment, the bending angle is one hundred eighty degrees.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.
Claims (6)
1. A keel frame connection for precast floor slabs comprising:
the keel trunk is pre-buried in the prefabricated floor slab (A), and one end of the keel trunk extends out of the prefabricated floor slab (A);
and the supporting structure is arranged at one end of the keel trunk extending out of the precast floor slab (A) so as to support the keel trunk.
2. A keel connecting structure for precast floor slabs according to claim 1, wherein: the keel main body comprises a keel reinforcing rib (1), the supporting structure comprises a supporting unit (2), the supporting unit (2) comprises a top plate, a bottom plate and a supporting plate connected with the top plate and the bottom plate, and the keel reinforcing rib (1) is fixed on the supporting plate.
3. A keel connecting structure for precast floor slabs according to claim 2, wherein: the keel main body further comprises a plurality of keel steel bar groups, each keel steel bar group comprises two keel steel bars (11) which are arranged up and down, one ends of the two keel steel bars (11) are used for being embedded in the prefabricated floor slab (A), and the other ends of the two keel steel bars are bent in opposite directions to form first bending;
the keel reinforcement sets further comprise keel transverse reinforcement units, each keel transverse reinforcement unit comprises two keel transverse reinforcement (13), one keel transverse reinforcement (13) is hooked with the keel reinforcement (11) above in each keel reinforcement set, and the other keel transverse reinforcement (13) is hooked with the keel reinforcement (11) below in each keel reinforcement set;
the keel reinforcement set further comprises closed-loop ribs (14), two ends of each closed-loop rib (14) are respectively bent to form a second bending and a third bending, and the second bending and the third bending are respectively hooked with the two keel transverse ribs (13);
the supporting structure is provided with a through hole for the keel transverse rib (13) to pass through.
4. A keel connecting structure for precast floor slabs according to claim 3, wherein: the keel frame connecting structure for the prefabricated floor slab further comprises stirrups (15), one ends of the stirrups (15) are embedded in the superposed beams (B), the other ends of the stirrups are bent to form fourth bending, and the fourth bending is hooked with any keel transverse rib (13).
5. The keel connecting structure for the precast floor plank of claim 4, wherein: the keel steel bars (11) are used for bending one end embedded in the prefabricated floor slab (A) to form a fifth bending.
6. A keel connecting structure for precast floor slabs as defined in claim 5, wherein: the bending angles of the first bending, the second bending, the third bending, the fourth bending and the fifth bending are larger than ninety degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320465361.8U CN220225921U (en) | 2023-03-13 | 2023-03-13 | Keel frame connecting structure for precast floor slabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320465361.8U CN220225921U (en) | 2023-03-13 | 2023-03-13 | Keel frame connecting structure for precast floor slabs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220225921U true CN220225921U (en) | 2023-12-22 |
Family
ID=89179284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320465361.8U Active CN220225921U (en) | 2023-03-13 | 2023-03-13 | Keel frame connecting structure for precast floor slabs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220225921U (en) |
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2023
- 2023-03-13 CN CN202320465361.8U patent/CN220225921U/en active Active
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