CN215106121U - One-way superimposed sheet piece department joint construction - Google Patents
One-way superimposed sheet piece department joint construction Download PDFInfo
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- CN215106121U CN215106121U CN202120476134.6U CN202120476134U CN215106121U CN 215106121 U CN215106121 U CN 215106121U CN 202120476134 U CN202120476134 U CN 202120476134U CN 215106121 U CN215106121 U CN 215106121U
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Abstract
The utility model relates to a joint connecting structure of one-way superimposed sheets, which comprises an upper cast-in-place layer and a lower prefabricated layer, wherein the lower prefabricated layer comprises more than two prefabricated sheets, and adjacent prefabricated sheets are spliced and connected; splicing seams exist at the splicing positions of adjacent prefabricated plates, transverse reinforcing steel bars and longitudinal reinforcing steel bars are included in cast-in-place layers at the upper parts of the splicing seams, the transverse reinforcing steel bars are positioned right above the splicing seams and perpendicular to the splicing seams, and the longitudinal reinforcing steel bars are parallel to the splicing seams; the bottom of the lower prefabricated layer is provided with a square groove, the square groove is positioned at the position of the abutted seam and is arranged in a full-length mode along the length direction of the prefabricated plate, and a steel bar net piece filled with cement mortar and leveled is arranged in the square groove. The utility model discloses can guarantee that the cast-in-place in piece position upper portion in situ can not lead to the fracture because of the atress, can avoid superimposed sheet piece position lower part again to appear non-atress crack in later stage use, influence the outward appearance, this joint construction is simple simultaneously, can satisfy structure atress structure requirement, can make the mill prefabricated again and site operation simple to operate.
Description
Technical Field
The utility model belongs to the building structure field, concretely relates to joint construction of one-way superimposed sheet piece department.
Background
With the rapid development of economy, the concepts of environmental protection and sustainable development are more and more deeply focused, the market application proportion of prefabricated structures with the characteristics of low carbon, green, environmental protection, energy conservation and the like is gradually increased, the prefabricated buildings are greatly promoted in recent years by the country, the prefabricated structures are particularly most applied to multi-story and high-rise residences, and the prefabricated structures are prefabricated concrete structure systems. Main structure includes horizontal component system and vertical component system among the prefabricated concrete structure system, and horizontal component system is the superimposed sheet system mainly, and the superimposed sheet system includes one-way superimposed sheet and two-way superimposed sheet, and one-way superimposed sheet system uses more generally, and when a floor size is great, for example positions such as sitting room, dining room and bedroom in the house, need assemble two or more prefabricated plates with a board split, when installation superimposed sheet prefabricated part like this, will have the piece in concatenation department, and this piece needs to carry out special construction and handles. With the gradual increase of concrete assembly type project engineering examples and the gradual development of technology, a connecting structure in a cast-in-place layer at the top of a splicing seam is mature, the probability of cracks generated at the bottom of a laminated slab at the position of the splicing seam in the construction process can be greatly reduced through special structure treatment, but in the later use process, even a main body is capped for a while, the bottom of the splicing seam generates tiny cracks, particularly, after the bottom of the slab is subjected to putty scraping treatment, the tiny cracks are obvious, the cracks are not stress cracks, the safety of the main body structure is not influenced, the appearance and the later use are influenced, in order to prevent the cracks generated at the later stage of the position of the splicing seam, various structural measures are still researched, and a reliable and simple connecting structure is not provided.
Disclosure of Invention
In order to solve the difficult problem that the piece position later stage uses and produces the fracture easily at the bottom of one-way superimposed sheet board, the utility model provides a one-way superimposed sheet piece department joint construction has simple structure, the characteristics of construction maneuverability is strong.
The utility model adopts the following technical proposal: a joint connecting structure of a one-way laminated slab comprises an upper cast-in-place layer and a lower prefabricated layer, wherein the lower prefabricated layer comprises more than two prefabricated slabs, and adjacent prefabricated slabs are spliced and connected; the cast-in-place layer at the upper part of the seam position comprises a transverse steel bar and a longitudinal steel bar, the transverse steel bar is positioned right above the seam and is vertical to the seam, and the longitudinal steel bar is parallel to the seam. The bottom of the lower prefabricated layer is provided with a square groove, the square groove is positioned at the splicing position and is arranged in a full-length mode along the length direction of the prefabricated plate, and a steel bar net piece is arranged in the square groove and cement mortar is filled in the square groove.
The transverse reinforcing steel bars are arranged in a plurality of spaced ways, the longitudinal reinforcing steel bars are arranged in two spaced ways, and the two longitudinal reinforcing steel bars are respectively positioned on two sides right above the splicing seam.
The width of the square groove is 200mm, the thickness of the square groove is 15mm, the diameter of a steel bar in the steel bar net piece is 4mm, and the distance between the steel bars is 50mm multiplied by 50 mm.
The upper corners of the spliced seam positions of the lower prefabricated layers are provided with triangular notches of 20mmx20mm along the length direction of the prefabricated plates in a whole length mode, and cast-in-place concrete is filled in the triangular notches; the square notch is internally provided with a reinforcing steel bar net piece which is filled by cement mortar and is leveled, the diameter of the reinforcing steel bar net piece is 4mm, and the distance between the reinforcing steel bar net piece and the reinforcing steel bar net piece is 50x 50. The square notch of 100mmx15mm of prefabricated part piece department lower part of superimposed sheet, when the mill is prefabricated, the easy detachable cystosepiment of installation on the superimposed sheet steel mould, and this breach bottom surface is the mat surface, has stronger bonding with the later stage cement mortar of filling out practicality.
The utility model discloses the superiority of technique lies in: the joint structure of the splicing positions of the two unidirectional superimposed sheets is enhanced, the bottom splicing positions of the superimposed sheets can be reduced by a large percentage, and cracks appear in the using process, and meanwhile, the easily detachable foam is arranged through the lower gap of the splicing positions of the prefabricated parts, so that the factory prefabrication and production are convenient, the foam is detached after field installation, the reinforcing mesh is additionally arranged inside, and the field construction is convenient. The connecting structure is simple, can meet the structural stress structure requirement, and can also facilitate factory prefabrication and field construction and installation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the utility model discloses a reinforcing bar schematic diagram of arranging.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. Comprises an upper cast-in-situ layer and a lower prefabricated layer.
As shown in attached figures 1-2, the utility model comprises a lower prefabricated layer 1 and an upper cast-in-place layer 2 of the one-way laminated slab, wherein the lower prefabricated layer 1 comprises more than two prefabricated slabs, and adjacent prefabricated slabs are spliced and connected; a splicing seam 4 exists at the splicing position of the adjacent prefabricated plates; when prefabricating the prefabricated slab of the lower prefabricated layer 1 in a factory at a joint position, a triangular notch of 20x20mm is arranged at the upper part of the prefabricated slab, a square notch 3 of 100x15mm is arranged at the lower part of the prefabricated slab, the top surface of the square notch 3 needs to be a rough surface, the square notch 3 is filled with foam materials which are easy to disassemble, the foam materials are poured together, after the cast-in-place layer of the laminated slab is poured at the later stage, a reinforcing mesh 7 is arranged, the diameter of the reinforcing mesh 7 is preferably 4mm, the distance between the reinforcing mesh and the mesh is 50x50mm, horizontal reinforcing steel bars of the mesh pass through the joint 4, and the notch 3 is filled with cement mortar of M10. The upper cast-in-place layer 2 at the seam splicing position comprises transverse steel bars and longitudinal steel bars, the transverse steel bars are positioned right above the seam splicing and vertical to the seam splicing, and the longitudinal steel bars are parallel to the seam splicing. The transverse steel bars 6 on the splicing seams 4 of the prefabricated parts penetrate through the splicing seams 4 (the transverse steel bars 6 cross the splicing seams 4 right above the splicing seams 4), the length of each side is not less than 300mm, the diameter and the distance of the steel bars are the same as those of the transverse steel bars 9 of the prefabricated plates at the bottoms of the laminated plates, the upper parts of the transverse steel bars 6 are provided with the longitudinal steel bars 5, and the diameter of the longitudinal steel bars is the same as that of the longitudinal steel bars 8 of the prefabricated plates at the bottoms of the laminated plates.
According to the embodiment, a prefabricated part 1 at the lower part of a laminated slab is prefabricated in a factory, longitudinal ribs 8 and transverse ribs 9 at the bottom of the laminated slab and truss reinforcing steel bars 12 are bound on a steel mold of the laminated slab, a detachable foam slab with the specification of 100x15mm is arranged at the lower part of the position of a splicing seam 4, a groove is formed in the surface of the foam slab, the top concrete of a notch 3 is guaranteed to be a rough surface after the detachable foam slab is poured, a 20x20mm notch is formed in the upper part of the position of the splicing seam 4, the concrete is poured in the factory, and the concrete is transported to the site for hoisting and installation after the concrete is maintained to reach the designed strength; after the prefabricated part 1 is installed, binding and installing the upper parts of the positions of the abutted seams 4 to connect reinforcing steel bars 5 and 6, then binding and installing composite slab gluten 10 and 11, casting the concrete of the cast-in-situ layer 2 in situ, and ensuring the compactness of the triangular gap concrete at the upper parts of the abutted seams 4 as much as possible during casting; and finally, after the strength of the cast-in-place layer concrete reaches the design requirement, removing the support, removing the foam material in the gap 3, laying a reinforcing mesh 7, and filling and leveling the gap 3 by using M10 cement mortar.
The utility model discloses an upper portion and lower part at the prefabricated part of superimposed sheet all set up breach and connecting reinforcement, the easy detachable foam material of lower part breach packing during the mill is prefabricated, make things convenient for prefabricated component's mill prefabrication, transportation and field installation, treat that the cast-in-place layer of superimposed sheet accomplishes and demolish the support back, lay the reinforcing bar net piece at the position that easily produces the fracture again, and trowel with cement mortar, can effectively avoid two superimposed sheets because of installation error, just form the crack after demolising the support, can avoid the later stage to look for at the bottom of the board and can also follow the piece seam position and crack after scraping putty.
The utility model discloses can satisfy the atress requirement of one-way superimposed sheet, the while simple structure, prefabricated component mill prefabrication, transportation and on-the-spot installation are all more convenient, and on-the-spot maneuverability is strong, has general suitability.
Claims (4)
1. The utility model provides a one-way superimposed sheet piece department joint construction which characterized in that: the prefabricated concrete slab comprises an upper cast-in-place layer and a lower prefabricated layer, wherein the lower prefabricated layer comprises more than two prefabricated slabs, and adjacent prefabricated slabs are spliced and connected; splicing seams exist at the splicing positions of adjacent prefabricated plates, transverse reinforcing steel bars and longitudinal reinforcing steel bars are included in cast-in-place layers at the upper parts of the splicing seams, the transverse reinforcing steel bars are positioned right above the splicing seams and perpendicular to the splicing seams, and the longitudinal reinforcing steel bars are parallel to the splicing seams; the bottom of the lower prefabricated layer is provided with a square groove, the square groove is positioned at the splicing position and is arranged in a full-length mode along the length direction of the prefabricated plate, and a steel bar net piece is arranged in the square groove and cement mortar is filled in the square groove.
2. The one-way superimposed sheet patchwork joint connection structure of claim 1, wherein: the transverse reinforcing steel bars are arranged in a plurality of spaced ways, the longitudinal reinforcing steel bars are arranged in two spaced ways, and the two longitudinal reinforcing steel bars are respectively positioned on two sides right above the splicing seam.
3. The one-way superimposed sheet patchwork joint connection structure of claim 1, wherein: the width of the square groove is 200mm, the thickness of the square groove is 15mm, the diameter of a steel bar in the steel bar net piece is 4mm, and the distance between the steel bars is 50mm multiplied by 50 mm.
4. The one-way superimposed sheet patchwork connecting structure of claim 1, 2 or 3, wherein: the upper corners of the lower prefabricated layer at the abutted seam positions are provided with triangular notches of 20mmx20mm throughout along the length direction of the prefabricated plate, and cast-in-place concrete is filled in the triangular notches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120476134.6U CN215106121U (en) | 2021-03-05 | 2021-03-05 | One-way superimposed sheet piece department joint construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120476134.6U CN215106121U (en) | 2021-03-05 | 2021-03-05 | One-way superimposed sheet piece department joint construction |
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| Publication Number | Publication Date |
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| CN215106121U true CN215106121U (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120476134.6U Active CN215106121U (en) | 2021-03-05 | 2021-03-05 | One-way superimposed sheet piece department joint construction |
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| CN (1) | CN215106121U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197718A (en) * | 2021-12-21 | 2022-03-18 | 南京长江都市建筑设计股份有限公司 | Floor structure of prefabricated building and building with floor structure |
| CN115012572A (en) * | 2022-06-06 | 2022-09-06 | 中国二十冶集团有限公司 | On-site construction method of prefabricated laminated slab of prefabricated building |
-
2021
- 2021-03-05 CN CN202120476134.6U patent/CN215106121U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197718A (en) * | 2021-12-21 | 2022-03-18 | 南京长江都市建筑设计股份有限公司 | Floor structure of prefabricated building and building with floor structure |
| CN115012572A (en) * | 2022-06-06 | 2022-09-06 | 中国二十冶集团有限公司 | On-site construction method of prefabricated laminated slab of prefabricated building |
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