CN210658881U - One-way concrete superimposed sheet - Google Patents
One-way concrete superimposed sheet Download PDFInfo
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- CN210658881U CN210658881U CN201921218738.XU CN201921218738U CN210658881U CN 210658881 U CN210658881 U CN 210658881U CN 201921218738 U CN201921218738 U CN 201921218738U CN 210658881 U CN210658881 U CN 210658881U
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- slab
- mortar layer
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Abstract
The utility model relates to a building field especially relates to an one-way concrete superimposed sheet. The technical scheme is as follows: a unidirectional concrete laminated slab comprises a plurality of prefabricated slabs which are spliced with each other, wherein a cast-in-place slab is arranged above the prefabricated slabs; the single-side grooves are formed in one side, far away from the cast-in-place plate, of each prefabricated plate, the single-side grooves of every two adjacent prefabricated plates are spliced to form a connecting groove, an inner elastic mortar layer and an outer elastic mortar layer are sequentially smeared in the grooves from inside to outside, and a plurality of alkali-resistant fiber glass mesh cloths are pressed in the inner elastic mortar layers; the prefabricated plates are fixed with reinforcing steel bars, the reinforcing steel bars are positioned in the single-side grooves, the other ends of the reinforcing steel bars extend into the single-side grooves of the adjacent prefabricated plates, and the reinforcing steel bars on the adjacent prefabricated plates are bound together. The utility model provides a can strengthen one-way concrete superimposed sheet of piece department ability of shearing has solved the problem that current superimposed sheet can't effectively avoid piece department fracture.
Description
Technical Field
The utility model relates to a building field especially relates to an one-way concrete superimposed sheet.
Background
The concrete laminated slab is formed by combining a prefabricated slab and a cast-in-place slab. During construction, the precast slabs are laid firstly, and then cast-in-place layers formed by reinforced concrete are poured on the precast slabs to form the laminated slab. The laminated slab can reduce the workload of formwork support, reduce wet operation, has controllable quality, improves the construction efficiency and shortens the construction period. Due to the reasons of hoisting, transportation and the like, the prefabricated slab of the laminated slab is formed by splicing a plurality of slabs. When the unidirectional plate is adopted for design, shearing force perpendicular to the splicing direction can occur at the splicing part of the laminated slab, and cracks are easily formed.
The invention patent with the patent application number of CN201910198320.5 discloses a PTB (polystyrene-based) mortar filling assembled one-way laminated slab bottom close joint structure and a construction method, wherein the close joint structure comprises a plurality of spliced one-way laminated slabs and concrete cast-in-place layers poured on the tops of the plurality of one-way laminated slabs, a joint is arranged between the one-way laminated slabs, the joint is respectively provided with a first PTB mortar layer and a second PTB mortar layer from top to bottom, the bottom of the second PTB mortar layer and the bottoms of the one-way laminated slabs extending to two sides of the bottom of the joint are provided with bonding layers, and the bonding layers are third PTB mortar layers or second PTB water solution layers; first PTB adhesive layer, second PTB adhesive layer and bond line and one-way superimposed sheet between to and all be equipped with a first PTB hydrosol layer between first PTB adhesive layer and the piece top. The method has the advantages of simple process, construction period saving, material saving, no need of paving and pasting the alkali-resistant glass fiber mesh cloth, effective prevention of later-stage cracking, later-stage repair cost saving, excellent quality, environmental protection and remarkable economic benefit.
However, the joints of the unidirectional composite boards are only filled with the mucilage, and cracking cannot be effectively avoided. After a long time, the joint of the laminated slab is easy to generate shear deformation, and even if the deformation is very small, the mortar layer at the joint also can generate cracks. When the mortar layer cracks, the joints of the laminated slab cannot be stably connected, and then cracks are generated at the joints of the laminated slab.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides an one-way concrete superimposed sheet that can strengthen piece department ability of shearing, has solved the problem that current superimposed sheet can't effectively avoid piece department fracture.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a unidirectional concrete laminated slab comprises a plurality of prefabricated slabs which are spliced with each other, wherein a cast-in-place slab is arranged above the prefabricated slabs; the single-side grooves are formed in one side, far away from the cast-in-place plate, of each prefabricated plate, the single-side grooves of every two adjacent prefabricated plates are spliced to form a connecting groove, an inner elastic mortar layer and an outer elastic mortar layer are sequentially smeared in the grooves from inside to outside, and a plurality of alkali-resistant fiber glass mesh cloths are pressed in the inner elastic mortar layers; the prefabricated plates are fixed with reinforcing steel bars, the reinforcing steel bars are positioned in the single-side grooves, the other ends of the reinforcing steel bars extend into the single-side grooves of the adjacent prefabricated plates, and the reinforcing steel bars on the adjacent prefabricated plates are bound together.
As the preferred scheme of the utility model, the height in unilateral groove is 8 ~ 12mm, and the width in unilateral groove is 40 ~ 60 mm.
As the preferred scheme of the utility model, the tip that the prefabricated plate is close to one side of cast-in-place board is provided with the chamfer.
As a preferred aspect of the present invention, the size of the chamfer is 10mm x 10 mm.
As the utility model discloses a preferred scheme, the thickness of interior elasticity mortar layer is 3 ~ 4mm, and one side that interior elasticity mortar layer was kept away from to outer elasticity mortar layer and one side parallel and level that cast-in-place board was kept away from to the prefabricated plate.
As the utility model discloses a preferred scheme, be provided with the jack on the prefabricated plate, the tip of reinforcing bar inserts in the jack of adjacent prefabricated plate after stretching into the unilateral groove of adjacent prefabricated plate.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a it has interior elasticity mortar layer and outer elasticity mortar layer to fill in proper order in the recess, and interior elasticity mortar layer has impressed a plurality of alkali-resisting fiber glass net check cloth. The shearing force can be resisted effectively on the elasticity mortar layer, and alkali-resistant fiber glass net check cloth has further improved the reliability on elasticity mortar layer, avoids when the superimposed sheet receives the shearing force, and cracked condition appears in the elasticity mortar layer, and then has reduced the condition that the fracture appears in superimposed sheet piece department. The steel bars on the adjacent prefabricated plates are bound together, so that the reliability of the elastic mortar layer is further improved, and the phenomenon that the inner elastic mortar layer or the outer elastic mortar layer deforms too much is avoided, so that cracks are avoided from appearing on the inner elastic mortar layer or the outer elastic mortar layer. The steel bars also ensure that the connection between the two prefabricated plates is more reliable, the shearing force at the joint of the two prefabricated plates can be effectively reduced, and the occurrence of the split joint cracking of the laminated plate is further reduced.
2. The height of the single-side groove is 8-12 mm, the width of the single-side groove is 40-60 mm, and after the inner elastic mortar layer and the outer elastic mortar layer are filled in the groove, the two prefabricated plates are reliably connected.
3. The end part of one side of the precast slab, which is close to the cast-in-place slab, is provided with a chamfer, so that the cast-in-place slab can extend into the chamfer of the precast slab, and the precast slab and the cast-in-place slab are ensured to be reliably connected.
4. The size of the chamfer angle is 10mm, and the chamfer angle can contain most concrete, so that the connection reliability of the precast slab and the cast-in-place slab is ensured, and the condition of cracking between the precast slab and the cast-in-place slab is avoided.
5. The thickness on interior elasticity mortar layer is 3 ~ 4mm, and the elasticity mortar layer is impressed has a plurality of alkali-resistant fiber glass net check cloth, and then the intensity and the toughness of interior elasticity mortar layer can obtain guaranteeing, avoids its condition that warp, ftracture when receiving shear force effect to act on.
6. The steel bars on the prefabricated plates are inserted into the jacks of the adjacent prefabricated plates, so that the connection between the adjacent prefabricated plates is more reliable, and the condition that the inner elastic mortar layer or the outer elastic mortar layer or the laminated plate is cracked integrally is further avoided.
Drawings
FIG. 1 is a schematic structural diagram of the present invention when no insertion hole is provided on the prefabricated panel;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic structural diagram of the present invention when the prefabricated panels are not provided with jacks;
fig. 4 is a partially enlarged view at B in fig. 3.
In the figure, 1-precast slab, 2-cast-in-place slab, 11-single-side groove, 12-chamfer, 13-jack, 3-groove, 4-inner elastic mortar layer, 41-alkali-resistant fiber glass mesh cloth, 5-outer elastic mortar layer and 6-reinforcing steel bar.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The working process is as follows:
after the precast slab 1 is hoisted in place, impurities in the groove 3 of the precast slab 1 are removed by using a steel wire, and then water is properly sprayed to the groove 3 for wetting. Then smearing elastic anti-crack mortar with the thickness of 3 mm-4 mm, pressing the alkali-resistant fiber glass mesh cloth 41 into the elastic mortar, finally smearing the groove with the elastic mortar, smoothing the surface, and sprinkling water for wetting.
Example one
A unidirectional concrete laminated slab comprises a plurality of prefabricated slabs 1 which are spliced with each other, wherein a cast-in-place slab 2 is arranged above the prefabricated slabs 1; the side, far away from the cast-in-place plate 2, of each prefabricated plate 1 is provided with a single-side groove 11, the single-side grooves 11 of two adjacent prefabricated plates 1 are spliced to form a connecting groove 3, an inner elastic mortar layer 4 and an outer elastic mortar layer 5 are sequentially smeared in the groove 3 from inside to outside, and a plurality of alkali-resistant fiber glass mesh cloths 41 are pressed in the inner elastic mortar layer 4; the prefabricated plates 1 are fixed with steel bars 6, the steel bars 6 are located in the single-side grooves 11, the other ends of the steel bars 6 extend into the single-side grooves 11 of the adjacent prefabricated plates 1, and the steel bars 6 on the adjacent prefabricated plates 1 are bound together.
The utility model discloses a recess 3 intussuseption is filled in proper order has interior elasticity mortar layer 4 and outer elasticity mortar layer 5, and interior elasticity mortar layer 4 goes into to have a plurality of alkali-resisting fiber glass net check cloth 41. The elastic mortar layer can effectively resist shearing force, the reliability of the elastic mortar layer is further improved by the alkali-resistant fiber glass gridding cloth 41, the situation that the elastic mortar layer cracks when the laminated slab is subjected to the shearing force is avoided, and the situation that the joint of the laminated slab cracks is reduced. The steel bars 6 on the adjacent prefabricated plates 1 are bound together, so that the reliability of the elastic mortar layer is further improved, and the inner elastic mortar layer 4 or the outer elastic mortar layer 5 is prevented from generating excessive deformation, so that cracks are prevented from occurring on the inner elastic mortar layer 4 or the outer elastic mortar layer 5. The steel bars 6 also ensure that the connection between the two prefabricated plates 1 is more reliable, the shearing force at the joint of the two prefabricated plates 1 can be effectively reduced, and the occurrence of the splicing and cracking conditions of the laminated plates is further reduced.
Example two
On the basis of the first embodiment, the height of the single-side groove 11 is 8-12 mm, and the width of the single-side groove 11 is 40-60 mm.
The height of the single-side groove 11 is 8-12 mm, the width of the single-side groove 11 is 40-60 mm, and after the inner elastic mortar layer 4 and the outer elastic mortar layer 5 are filled in the groove 3, the two prefabricated plates 1 are reliably connected.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the end part of the precast slab 1 close to one side of the cast-in-place slab 2 is provided with a chamfer 12.
The end part of one side of the precast slab 1 close to the cast-in-place slab 2 is provided with a chamfer 12, so that the cast-in-place slab 2 can extend into the chamfer 12 of the precast slab 1, and the precast slab 1 and the cast-in-place slab 2 are ensured to be reliably connected.
Example four
In any of the above embodiments, the chamfer 12 has a dimension of 10mm by 10 mm.
The size of the chamfer 12 is 10mm, and the chamfer 12 can contain most concrete, so that the precast slab 1 and the cast-in-place slab 2 are reliably connected, and the condition of cracking between the precast slab 1 and the cast-in-place slab 2 is avoided.
EXAMPLE five
On the basis of any one of the above embodiments, the thickness of the inner elastic mortar layer 4 is 3-4 mm, and one side of the outer elastic mortar layer 5, which is far away from the inner elastic mortar layer 4, is flush with one side of the precast slab 1, which is far away from the cast-in-place slab 2.
The thickness of interior elasticity mortar layer 4 is 3 ~ 4mm, and interior elasticity mortar layer 4 is impressed and has a plurality of alkali-resistant fiber glass net cloth 41, then the intensity and the toughness of interior elasticity mortar layer 4 can obtain guaranteeing, avoids its condition that warp, ftracture when receiving the shearing force effect.
EXAMPLE six
On the basis of any one of the above embodiments, the prefabricated panels 1 are provided with the insertion holes 13, and the ends of the reinforcing steel bars 6 are inserted into the insertion holes 13 of the adjacent prefabricated panels 1 after extending into the single-side grooves 11 of the adjacent prefabricated panels 1.
The steel bars 6 on the prefabricated plates 1 are inserted into the insertion holes 13 of the adjacent prefabricated plates 1, so that the connection between the adjacent prefabricated plates 1 is more reliable, and the condition that the inner elastic mortar layer 4 or the outer elastic mortar layer 5 or the laminated plate is cracked integrally is further avoided.
Claims (6)
1. A unidirectional concrete laminated slab comprises a plurality of prefabricated slabs (1) which are spliced with each other, wherein cast-in-place slabs (2) are arranged above the prefabricated slabs (1); the prefabricated slab is characterized in that a single-side groove (11) is formed in one side, far away from a cast-in-place slab (2), of each prefabricated slab (1), the single-side grooves (11) of two adjacent prefabricated slabs (1) are spliced to form a connecting groove (3), an inner elastic mortar layer (4) and an outer elastic mortar layer (5) are sequentially smeared in the groove (3) from inside to outside, and a plurality of alkali-resistant fiber glass mesh cloths (41) are pressed in the inner elastic mortar layer (4); the prefabricated plates (1) are fixed with steel bars (6), the steel bars (6) are positioned in the single-side grooves (11), the other ends of the steel bars (6) extend into the single-side grooves (11) of the adjacent prefabricated plates (1), and the steel bars (6) on the adjacent prefabricated plates (1) are bound together.
2. A unidirectional concrete composite slab as claimed in claim 1, wherein the height of the single-sided slot (11) is 8-12 mm and the width of the single-sided slot (11) is 40-60 mm.
3. A unidirectional concrete composite slab as claimed in claim 1, characterised in that the end of the precast slab (1) on the side close to the cast-in-place slab (2) is provided with a chamfer (12).
4. A unidirectional concrete composite slab as claimed in claim 3, characterised in that said chamfer (12) has dimensions of 10mm by 10 mm.
5. The unidirectional concrete composite slab as claimed in claim 1, wherein the thickness of the inner elastic mortar layer (4) is 3-4 mm, and one side of the outer elastic mortar layer (5) far away from the inner elastic mortar layer (4) is flush with one side of the precast slab (1) far away from the cast-in-place slab (2).
6. A unidirectional concrete composite slab as claimed in any one of claims 1 to 5, wherein the precast slab (1) is provided with a jack (13), and the end of the steel bar (6) is inserted into the jack (13) of the adjacent precast slab (1) after extending into the single-side groove (11) of the adjacent precast slab (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921218738.XU CN210658881U (en) | 2019-07-31 | 2019-07-31 | One-way concrete superimposed sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921218738.XU CN210658881U (en) | 2019-07-31 | 2019-07-31 | One-way concrete superimposed sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210658881U true CN210658881U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921218738.XU Expired - Fee Related CN210658881U (en) | 2019-07-31 | 2019-07-31 | One-way concrete superimposed sheet |
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| Country | Link |
|---|---|
| CN (1) | CN210658881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215248A (en) * | 2021-12-21 | 2022-03-22 | 南京长江都市建筑设计股份有限公司 | One-way laminated slab forming method, forming die and one-way laminated slab |
-
2019
- 2019-07-31 CN CN201921218738.XU patent/CN210658881U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215248A (en) * | 2021-12-21 | 2022-03-22 | 南京长江都市建筑设计股份有限公司 | One-way laminated slab forming method, forming die and one-way laminated slab |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200602 |