CN219952648U - Sectional bolt for prefabricated laminated slab - Google Patents
Sectional bolt for prefabricated laminated slab Download PDFInfo
- Publication number
- CN219952648U CN219952648U CN202321154693.0U CN202321154693U CN219952648U CN 219952648 U CN219952648 U CN 219952648U CN 202321154693 U CN202321154693 U CN 202321154693U CN 219952648 U CN219952648 U CN 219952648U
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- Prior art keywords
- bolt
- prefabricated laminated
- sleeve
- steel bar
- prefabricated
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- 238000010276 construction Methods 0.000 claims abstract description 24
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 238000009417 prefabrication Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a sectional bolt for a prefabricated laminated slab, which comprises the prefabricated laminated slab and a second bolt; the prefabricated laminated slab is internally embedded with a first bolt and a plurality of reinforcing steel bar sleeves; the steel bar sleeve is arranged on the first bolt; the first bolt and the second bolt are connected through a reinforcing steel bar sleeve; the sectional bolt has a simple structure and is convenient to store and transport; the installation is convenient, and the construction efficiency is improved; the prefabricated rate of superimposed sheet is high, has ensured the integrality of prefabricated plate, has reduced construction cost.
Description
Technical Field
The utility model belongs to the field of assembly type industrial building construction, and particularly relates to a sectional type bolt for a prefabricated laminated slab.
Background
Along with the great promotion of building industrialization in China and the out-of-counter of a series of supporting policies of assembled buildings, the number of assembled industrial building projects, especially the project number of an assembled concrete structure system, is rapidly increasing; in the assembled concrete structure system of the present stage, more prefabricated superimposed sheets are adopted; the prefabricated laminated slab is manufactured by installing the prefabricated slab in two parts, the bottom is the prefabricated bottom plate, the upper part is formed by concrete pouring, the prefabricated laminated slab is good in integrity, the upper surface and the lower surface of the slab are smooth, decoration of a decoration surface layer is facilitated, and the prefabricated laminated slab is suitable for high-rise buildings and large-bay buildings with high overall rigidity requirements.
At present, when the cantilever scaffold of the superimposed sheet is constructed, the superimposed floor slab at the cantilever scaffold is usually changed into a cast-in-situ floor slab, or one superimposed sheet is optimized into two superimposed sheets which are assembled, and the embedded bolts are cast in situ at the joint, so that the method is safer, but reduces the prefabrication rate, the construction process is more complicated, and the construction cost is improved to a certain extent.
The installation of the assembled concrete superimposed sheet causes great difficulty for the pre-embedding construction of the U-shaped bolts in the traditional cantilever frame erection; the U-shaped bolts are directly placed on the precast slabs to cause insufficient embedding depth and not meet the standard requirements, so that bolts are usually embedded by punching holes on the precast slabs, and the construction scheme is complex in process and can damage the integrity of the precast slabs; and the later demolding is also influenced, and a great deal of adverse effect is generated on the overall construction quality of the project.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the sectional bolt for the prefabricated laminated slab, which has the advantages of simple structure, convenience in installation, high prefabrication rate and low construction cost.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a sectional bolt for a prefabricated laminated slab comprises the prefabricated laminated slab and a second bolt; the prefabricated laminated slab is internally embedded with a first bolt and a plurality of reinforcing steel bar sleeves; the steel bar sleeve is arranged on the first bolt; the first bolt and the second bolt are connected through a reinforcing steel bar sleeve.
Preferably, the first bolt is of a U-shaped structure; a plurality of reinforcing construction ribs are arranged at the U-shaped bending position of the first bolt.
Preferably, the two U-shaped end portions of the first bolt are provided with first bolt external threads.
Preferably, the steel bar sleeve is cylindrical with a hollow middle, and an internal thread groove matched with the external thread of the first bolt is formed in the steel bar sleeve.
Preferably, the first bolt and the reinforcing bar sleeve are connected by a first bolt external thread and an internal thread groove.
Preferably, both ends of the second bolt are provided with second bolt external threads; the second bolt is connected with the steel bar sleeve through the external thread and the internal thread groove of the second bolt.
Preferably, the second bolt is sleeved with a PVC sleeve.
Preferably, the PVC sleeve inner diameter matches the second bolt diameter.
Preferably, a water stop ring is arranged at the joint of the second bolt and the reinforcing steel bar sleeve.
Preferably, the inner diameter of the water stop ring matches the diameter of the second bolt.
Compared with the prior art, the utility model has the following beneficial effects:
a sectional bolt for a prefabricated laminated slab comprises the prefabricated laminated slab and a second bolt; the prefabricated laminated slab is internally embedded with a first bolt and a plurality of reinforcing steel bar sleeves; the steel bar sleeve is arranged on the first bolt; the first bolt and the second bolt are connected through a reinforcing steel bar sleeve; the sectional type bolt is simple in structure, convenient to install and convenient to store and transport.
The first bolts and the plurality of reinforcing steel bar sleeves are pre-buried in the prefabricated laminated slab in advance; the integrity of the prefabricated laminated slab is guaranteed, the prefabrication rate of the sectional bolts is improved, the installation and transportation of constructors are convenient, and the construction efficiency is improved.
The first bolt is of a U-shaped structure; a plurality of reinforcing construction ribs are arranged at the U-shaped bending position of the first bolt; the reinforcing construction ribs are pre-buried above the first bolts, so that the first bolts are effectively and reliably anchored in the prefabricated laminated slab; the stability of the first bolt on the prefabricated laminated slab is improved, and the integral structure of the sectional type bolt is firmer.
Wherein, the two U-shaped end parts of the first bolt are provided with first bolt external threads; the steel bar sleeve is cylindrical with a hollow middle part; an internal thread groove matched with the external thread of the first bolt is formed in the reinforcing steel bar sleeve; the first bolt is connected with the reinforcing steel bar sleeve through the external thread and the internal thread groove of the first bolt; the two are connected through threads, so that the structure is more stable, the assembly and disassembly of workers are convenient, and the construction efficiency can be effectively improved.
The two ends of the second bolt are provided with second bolt external threads; the second bolt is connected with the steel bar sleeve through the external thread and the internal thread groove of the second bolt; the two are connected through the screw, so that the structure is more stable, in the subsequent construction process, workers can conveniently dismantle the second bolt, recycling is performed, and the construction cost is effectively reduced.
The second bolt is sleeved with a PVC sleeve; the inner diameter of the PVC sleeve is matched with the diameter of the second bolt; the PVC sleeve can protect the second bolt from being damaged, so that the second bolt can be recycled, the construction cost is reduced, and the material is saved.
A water stop ring is arranged at the joint of the second bolt and the steel bar sleeve; the inner diameter of the water stop ring is matched with the diameter of the second bolt; the water stop ring effectively reduces the leakage risk of the watershed.
Compared with the prior art, the method for embedding the first bolt and the reinforcing steel bar sleeve in advance in the prefabricated laminated slab ensures the integrity of the prefabricated laminated slab, the first bolt and the second bolt are connected in a segmented mode, the plate surface outlet part of the bolt can not influence the construction processes of transportation, stacking, hoisting and the like of the prefabricated laminated slab, the leakage risk is reduced by the water stop ring, and the second bolt is recovered by the PVC sleeve.
Other features and advantages of the present utility model will be disclosed in the following detailed description of the utility model and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present utility model.
Fig. 2 is a schematic structural view of a first bolt in embodiment 1 of the present utility model.
Fig. 3 is a plan view of a reinforcing bar sleeve according to embodiment 1 of the present utility model.
Fig. 4 is a schematic structural view of a second bolt in embodiment 1 of the present utility model.
FIG. 5 is a schematic view showing the structure of a PVC sleeve in example 1 of the present utility model.
Fig. 6 is a schematic structural view of embodiment 2 of the present utility model.
FIG. 7 is a top view of the water stop ring of example 2 of the present utility model.
The reference numerals are explained as follows:
precast composite slab 1, concrete 2, first bolt 3, first bolt external screw thread 31, second bolt 4, second bolt external screw thread 41, reinforcing bar sleeve 5, internal thread groove 51, reinforcing structure muscle 6, PVC sleeve 7, water stop ring 8.
Detailed Description
The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the embodiments, other examples that a person skilled in the art would obtain without making any inventive effort fall within the scope of the utility model.
In the following description, directional or positional relationships such as the terms "inner", "outer", "upper", "lower", "left", "right", etc., are presented for convenience in describing the embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
Example 1:
as shown in fig. 1, a sectional type bolt for a prefabricated laminated slab is provided with a prefabricated laminated slab 1 and a second bolt 4 from bottom to top; the first bolt 3 and the plurality of reinforcing steel bar sleeves 5 are pre-buried in the prefabricated laminated slab 1, wherein the reinforcing steel bar sleeves 5 are installed on the first bolt 3; the first bolt 3 and the second bolt 4 are connected through a reinforcing sleeve 5; the exposed part of the second bolt 4 is poured with concrete 2 above the prefabricated laminated slab 1; the sectional type bolt is simple in structure and convenient to install and transport.
The shape of the first bolt 3 is in a U-shaped structure; a plurality of reinforcing construction ribs 6 are arranged at the U-shaped bending position of the first bolt 3; the reinforcing construction ribs 6 are embedded above the first bolts, so that the first bolts 3 are effectively and reliably anchored in the prefabricated laminated slab 1, and the embedded depth of the first bolts 3 is ensured by adopting the two reinforcing construction ribs 6.
As shown in fig. 2, the two U-shaped ends of the first bolt 3 are provided with first bolt external threads 31; as shown in fig. 3, the steel bar sleeve 5 is cylindrical in shape, hollow in the middle and provided with an internal thread groove 51; as shown in fig. 1, the reinforcing sleeve 5 and the first bolt 3 are connected through the internal thread groove 51 and the external thread 31, and the connection of the parts is more stable and is not easy to be broken by the threaded connection.
As shown in fig. 4, the second bolt 4 is cylindrical, the middle is solid, the two ends are provided with second bolt external threads 41, and one end of the second bolt 4 is connected with the reinforcing steel bar sleeve 5 through the bolt external threads 41 and the internal thread groove 51 as shown in fig. 1 and 3, so that mechanical connection is formed, and the whole stress stability is ensured not to be damaged.
As shown in fig. 5, the PVC sleeve 7 is made of PVC, and the diameter of the sleeve is matched with that of the second bolt 4; and in combination with the illustration of fig. 1, the PVC sleeve 7 is sleeved outside the second bolt 4 and is assembled at the joint of the second bolt 4 and the reinforcing steel bar sleeve 5, so that the concrete 2 and the second bolt 4 can be effectively isolated, the later-stage second bolt 4 can be ensured to be successfully recycled, the resources are saved, and the cost is reduced.
Example 2:
as shown in fig. 7, the water stop ring 8 is refined by a high polymer inorganic water-absorbing expansion material and rubber; the inner diameter of the water stop ring 8 is matched with the diameter of the second bolt 4; referring to fig. 6, the PVC sleeve 7 of example 1 was replaced with a water ring 8; the water stop ring 8 is arranged at the joint of the second bolt 4 and the steel bar sleeve 5; the water stop ring 8 can absorb water and expand after meeting water, the expansion rate is more than or equal to 200 percent, and the water stop effect can be completely achieved by self-expanding and compacting the gap between the concrete 2 and the second bolt 4.
The water stop ring 8 in this embodiment replaces the PVC sleeve in embodiment 1; in addition, other contents can be referred to embodiment 1.
The concrete construction steps are as follows:
1. firstly, connecting a first bolt 3 with a reinforcing steel bar sleeve 5, wherein the connection depth is controlled to be 18mm, and then, integrally embedding the connected first bolt 3 and the reinforcing steel bar sleeve 5 in a prefabricated laminated plate 1 to integrally produce the prefabricated laminated plate 1; in order to ensure that the first bolt 3 is effectively and reliably anchored in the prefabricated laminated slab 1, two reinforcing construction ribs 6 are arranged at the U-shaped bending part of the first bolt 3, the diameter is 18mm, the length is 1.5m, and the proper adjustment of the part according to the actual size of the laminated slab is not satisfied; two strong construction ribs 6 are bound with the horizontal ribs of the prefabricated laminated slab 1 to strengthen the anchoring of the first bolt 3 of the embedded part.
2. After the prefabricated laminated slab 1 is produced, transported to the site and hoisted in place, the second bolts 4 are screwed into the reinforcing steel bar sleeves 5, and the prefabricated laminated slab is required to be completely screwed into 18mm.
3. According to different using functions of rooms, a PVC sleeve 7 is sleeved on the second bolt 4 in a non-wading room, and a water stop ring 8 is sleeved on the second bolt 4 in a water room.
4. And after the concrete 2 is poured and the strength meets the requirement, cantilever I-steel can be erected in a conventional mode, after the I-steel is dismantled, the second bolt 4 in the water room adopts a cutting measure, and the second bolt 4 is unscrewed from the non-wading room for recycling.
5. And (3) after the second bolt 4 is screwed out, repairing the hole of the concrete 2, chiseling the PVC sleeve 7, cleaning the hole, wetting, filling micro-expansion cement mortar, tamping, and curing.
While the utility model has been described in terms of embodiments, it will be appreciated by those skilled in the art that the utility model is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present utility model are intended to be included within the scope of the appended claims.
Claims (10)
1. A segmented bolt for prefabricated laminated slabs, characterized by comprising a prefabricated laminated slab (1) and a second bolt (4); a first bolt (3) and a plurality of reinforcing steel bar sleeves (5) are embedded in the prefabricated laminated slab (1); the steel bar sleeve (5) is arranged on the first bolt (3); the first bolt (3) and the second bolt (4) are connected through a reinforcing sleeve (5).
2. A segmented bolt for prefabricated laminated slabs according to claim 1, characterized in that said first bolt (3) has a U-shaped structure; a plurality of reinforcing construction ribs (6) are arranged at the U-shaped bending position of the first bolt (3).
3. A segmented bolt for prefabricated laminated slabs according to claim 2, characterized in that the two U-shaped ends of the first bolt (3) are provided with first external screw threads (31).
4. The sectional type bolt for the prefabricated laminated slab according to claim 1, wherein the steel bar sleeve (5) is cylindrical with a hollowed-out middle, and an inner thread groove (51) matched with the outer thread (31) of the first bolt is formed in the steel bar sleeve (5).
5. A segmented bolt for prefabricated laminated slabs according to claim 4, characterized in that the first bolt (3) and the reinforcing sleeve (5) are connected by means of a first bolt external thread (31) and an internal thread groove (51).
6. A segmented bolt for prefabricated laminated slabs according to claim 1, characterized in that the second bolt (4) is provided with second external screw threads (41) at both ends; the second bolt (4) is connected with the reinforcing sleeve (5) through the second bolt external thread (41) and the internal thread groove (51).
7. A segmented bolt for prefabricated laminated slabs according to any of the claims 1-6, characterized in that the second bolt (4) is sheathed with a PVC sleeve (7).
8. A segmented bolt for prefabricated laminated slabs according to claim 7, characterized in that the PVC sleeve (7) has an inner diameter matching the diameter of the second bolt (4).
9. A segmented bolt for prefabricated laminated slabs according to any of the claims 1-6, characterized in that the connection of the second bolt (4) with the reinforcement sleeve (5) is provided with a water stop ring (8).
10. A segmented bolt for prefabricated laminated slabs according to claim 9, characterized in that the inner diameter of the water stop ring (8) matches the diameter of the second bolt (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321154693.0U CN219952648U (en) | 2023-05-15 | 2023-05-15 | Sectional bolt for prefabricated laminated slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321154693.0U CN219952648U (en) | 2023-05-15 | 2023-05-15 | Sectional bolt for prefabricated laminated slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219952648U true CN219952648U (en) | 2023-11-03 |
Family
ID=88550164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321154693.0U Active CN219952648U (en) | 2023-05-15 | 2023-05-15 | Sectional bolt for prefabricated laminated slab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219952648U (en) |
-
2023
- 2023-05-15 CN CN202321154693.0U patent/CN219952648U/en active Active
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