CN112302226B - Prefabricated dense rib plate - Google Patents
Prefabricated dense rib plate Download PDFInfo
- Publication number
- CN112302226B CN112302226B CN202011343934.7A CN202011343934A CN112302226B CN 112302226 B CN112302226 B CN 112302226B CN 202011343934 A CN202011343934 A CN 202011343934A CN 112302226 B CN112302226 B CN 112302226B
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- CN
- China
- Prior art keywords
- rib
- longitudinal
- transverse
- reinforced concrete
- concrete
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- 239000011150 reinforced concrete Substances 0.000 claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 239000004567 concrete Substances 0.000 claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 238000010008 shearing Methods 0.000 claims description 12
- 210000003205 muscle Anatomy 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 11
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 6
- 238000005336 cracking Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000003601 intercostal effect Effects 0.000 description 1
Classifications
-
- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
-
- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
- E04B5/046—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement with beams placed with distance from another
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The utility model provides a prefabricated close rib plate, includes reinforced concrete board, longitudinal rib, transverse rib and steel bar truss, the reinforced concrete board comprises reinforcing bar net piece and concrete, reinforced concrete board lower part is equipped with a plurality of longitudinal ribs of longitudinal arrangement, the longitudinal rib comprises longitudinal rib concrete and longitudinal rib reinforcing bar, reinforced concrete board lower part is equipped with at least one transverse arrangement the transverse rib, the transverse rib is located perpendicularly the middle part of longitudinal rib, reinforced concrete board upper portion is close to the tip position and buries at least one transverse arrangement the steel bar truss, the steel bar truss upper portion exposes the reinforced concrete board is high certainly, the longitudinal rib the transverse rib with the reinforced concrete board is pour as an organic wholely. The prefabricated dense rib plate has high rigidity, less steel consumption and low cost, and the combination of the transverse and longitudinal crossed main rib and the transverse rib can raise the deformation coordination performance between ribs and the overload capacity under the action of local load.
Description
Technical Field
The invention relates to a concrete prefabricated part, in particular to a prefabricated dense rib plate.
Background
Floor in traditional frame construction adopts the mode to pour the floor generally, and the formwork process is many, and the quality is difficult to control, if adopt assembled building, the board span is generally not more than 3 meters, otherwise need to establish the support, and floor economic nature is poor. In order to perform formwork-free rapid construction during floor construction, the inventor has disclosed that the permanent steel bar truss floor carrier plate or the closed steel carrier plate is used as a building formwork and a stress steel bar at the bottom of the floor, the formwork-free construction is performed after the construction is completed, the process is simple, the beam spacing is small, liang Genshu is large, and when the building structure is large in load and large in span, the steel consumption of the floor is large, the transverse deformation coordination of the steel carrier plate is poor, and is inconsistent with the calculation assumption of equivalent uniform load, so that the number of precast beams cannot be reduced. The unidirectional force transmission prefabricated dense rib plate with large applicable span, large load, simple construction and good integrity is not reported.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects of the prior art and providing the unidirectional force transmission prefabricated dense rib plate which has the advantages of large applicable span, large load, simple construction and good integrity.
The invention provides a prefabricated dense rib plate, which comprises a reinforced concrete plate, longitudinal ribs, transverse ribs and a reinforced truss, wherein the reinforced concrete plate consists of a reinforced net sheet and concrete, the longitudinal ribs consist of longitudinal rib concrete and longitudinal rib steel bars, the cross section of the longitudinal rib concrete is in a shape of small lower part and large upper part, the longitudinal rib steel bars are embedded in the lower part of the longitudinal rib concrete, a plurality of longitudinal ribs are longitudinally arranged on the lower part of the reinforced concrete plate, the transverse ribs consist of transverse rib concrete and transverse rib steel bars, the cross section of the transverse rib concrete is in a shape of small lower part and large upper part, the transverse rib steel bar is buried in the lower part of the transverse rib concrete, at least one transverse rib is transversely arranged on the lower part of the reinforced concrete plate, the transverse rib is vertically arranged in the middle of the longitudinal rib, the steel bar truss consists of an upper chord steel bar, a web member and a lower chord steel bar, at least one steel bar truss is transversely buried in the upper part of the reinforced concrete plate near the end part, the upper part of the steel bar truss is exposed out of the reinforced concrete plate to a certain height, and the longitudinal rib, the transverse rib and the reinforced concrete plate are cast into a whole.
The prefabricated dense rib plate provided by the invention also has the following auxiliary technical characteristics:
The upper planes of the two sides of the reinforced concrete plate are provided with slopes which incline downwards.
The end part of the reinforced concrete slab is provided with a transverse concrete upturning rib, and the concrete upturning rib is higher than the upper surface of the reinforced concrete slab by a certain height.
The thickness of the reinforced concrete plate is 30 mm-60 mm.
The longitudinal rib height is greater than the transverse rib height.
The vertical shearing net piece muscle has been arranged at longitudinal rib both ends, net piece muscle upper portion exposes the reinforced concrete board is high certainly, shearing net piece muscle is formed by the reinforcing bar bending type, and the shape is the S-shaped. .
The distance between the longitudinal ribs is 300 mm-600 mm.
The height of the longitudinal ribs is 150-350 mm.
Hooks are buried at two ends in the longitudinal rib concrete, and the upper parts of the hooks are exposed out of the reinforced concrete plates at a certain height.
Compared with the prior art, the prefabricated dense rib plate provided by the invention has the following advantages:
1. The prefabricated dense rib plate has high rigidity and bearing capacity in the construction stage, and can be used for floor slab support-free construction.
2. The transverse ribs are used for connecting the longitudinal ribs of the concrete in series, so that the inter-rib deformation coordination performance is improved, and the overload capacity under the action of local load is improved.
3. The number of precast beams can be reduced by adopting the large-span precast dense rib plates, the steel consumption of the plates is small, and the engineering cost is saved.
4. The post-pouring part of the prefabricated dense rib plate and the prefabricated beam are integrally poured, and the structural integrity is good.
5. Truss steel bars are used as erection steel bars of the hogging moment steel bars of the cast-in-situ layer of the laminated slab, the shearing strength of the laminated surface of the slab is improved, and the truss steel bars are also used as upturning ribs of the series longitudinal ribs, so that the longitudinal stress in the hoisting stage is ensured to be uniform.
Drawings
FIG. 1 is a perspective view of a prefabricated rib plate according to the present invention.
Fig. 2 is a bottom view of the prefabricated rib plate of the present invention.
FIG. 3 is a cross-sectional view of a prefabricated rib according to the present invention.
FIG. 4 is a reinforcement view of a prefabricated dense rib plate according to the present invention.
Fig. 5 is a perspective view of the present invention with upturned ribs.
Fig. 6 is a detailed view of the shear resistant mesh reinforcement of the present invention.
Fig. 7 is a perspective view of truss rebar of the present invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1 to 5, in an embodiment of the prefabricated dense rib plate provided by the invention, the prefabricated dense rib plate comprises a reinforced concrete plate 1, a longitudinal rib 2, a transverse rib 3 and a reinforced truss 4, wherein the reinforced concrete plate 1 consists of a reinforced net 11 and a reinforced concrete 12, the longitudinal rib 2 consists of a longitudinal rib concrete 21 and a longitudinal rib reinforced bar 22, the cross section of the longitudinal rib concrete 21 is in a small-down large shape, the longitudinal rib reinforced bar 22 is embedded in the lower part of the longitudinal rib concrete 21, a plurality of longitudinal ribs 2 are longitudinally arranged in the lower part of the reinforced concrete plate 1, the transverse rib 3 consists of a transverse rib concrete 31 and a transverse rib reinforced bar 32, the cross section of the transverse rib concrete 31 is in a small-down large shape, the transverse rib reinforced bar 32 is embedded in the lower part of the transverse rib concrete 31, at least one transverse rib 3 is transversely arranged in the lower part of the reinforced concrete plate 1, the transverse rib 3 is vertically arranged in the middle part of the longitudinal rib 2, the longitudinal rib 4 consists of an upper chord rib 41, a web member 42 and a lower chord rib 43, and at least one transverse rib 4 is embedded in the upper part of the reinforced concrete plate 1, and a certain height of the reinforced bar 1 is exposed at the upper part of the reinforced bar plate 1. The steel bar truss 4 is used as a erection steel bar of a cast-in-situ layer hogging moment steel bar of the laminated slab, improves the shearing strength of a laminated surface of the slab, is also used as an upturned rib of a series longitudinal rib, ensures that each longitudinal stress is uniform in a hoisting stage, the longitudinal rib 2 is beneficial to improving the rigidity and strength of the slab and effectively improving the bearing capacity, the transverse rib 3 can prevent the sheet from cracking in the processes of drawing and hoisting in the construction stage, improves the intercostal deformation coordination performance in the use process and improves the overload capacity under the action of local load, and the vertical shear-resistant net rib 23 is beneficial to improving the end shearing resistance.
Referring to fig. 3, in an embodiment of the prefabricated rib according to the present invention, the upper planes of both sides of the reinforced concrete slab 1 are provided with slopes 13 inclined downward. The slope 13 is used for placing anti-cracking ribs at the plate joint during later construction, so that the protection layers of the anti-cracking ribs are reduced as much as possible.
Referring to fig. 5, in an embodiment of a prefabricated dense rib provided by the present invention, a concrete upturning rib 14 is disposed at an end of the reinforced concrete slab 1, and the concrete upturning rib 14 is higher than an upper surface of the reinforced concrete slab 1 by a certain height. The upturning ribs 14 are equivalent to the truss steel bars 4, and improve transverse stress performance and prevent plate cracking during demolding and hoisting.
Referring to fig. 4, in an embodiment of the prefabricated dense rib provided by the invention, the rib height of the longitudinal rib 2 is greater than the rib height of the transverse rib 3, vertical shearing-resistant net ribs 23 are arranged at two ends of the longitudinal rib 2, the upper parts of the net ribs 23 are exposed out of the reinforced concrete slab 1 by a certain height, and the shearing-resistant net ribs 23 are formed by bending steel bars and are in an S shape. The vertical shearing-resistant net rib 23 meets the shearing strength requirement of the end part when the shearing force is large.
Referring to fig. 4, in an embodiment of the prefabricated rib according to the present invention, hooks 24 are embedded at two ends of the longitudinal rib concrete 21, the upper parts of the hooks 24 are exposed out of the reinforced concrete slab 1 by a certain height, and the hooks 24 are used for hoisting.
Referring to fig. 1 to 5, in an embodiment of the prefabricated rib according to the present invention, the pitch of the longitudinal ribs 2 is 300mm to 600mm, the height of the longitudinal ribs 2 is 150mm to 350mm, and the thickness of the reinforced concrete slab 1 is 30mm to 60mm. When the distance between the longitudinal ribs 2 is 300-600 mm and the height is 150-350 mm, the optimal height and the minimum reinforcement under different spans and different loads can be met, and the economy is better.
In the present invention, all "certain height, certain inclination" means a length necessary for satisfying design requirements, that is, a length necessary for adapting to connection and strength requirements, which is clear to a person skilled in the art, and is set as required.
Claims (7)
1. The utility model provides a prefabricated close floor, includes reinforced concrete board, longitudinal rib, transverse rib and steel bar truss, its characterized in that: the reinforced concrete slab consists of a reinforced net sheet and concrete, the longitudinal ribs consist of longitudinal rib concrete and longitudinal rib steel bars, the cross sections of the longitudinal rib concrete are small at the bottom and large at the top, the longitudinal rib steel bars are embedded in the lower parts of the longitudinal rib concrete, the longitudinal ribs are longitudinally arranged on the lower parts of the reinforced concrete slab, the transverse ribs consist of transverse rib concrete and transverse rib steel bars, the cross sections of the transverse rib concrete are small at the bottom and large at the top, the transverse rib steel bars are embedded in the lower parts of the transverse rib concrete, at least one transverse rib is transversely arranged on the lower parts of the reinforced concrete slab, the transverse ribs are vertically arranged in the middle parts of the longitudinal ribs, the reinforced trusses consist of upper chord steel bars, web members and lower chord steel bars, at least one reinforced truss is transversely embedded in the position, close to the end parts, of the upper parts of the reinforced trusses are exposed out of the reinforced concrete slab, and the longitudinal ribs, the transverse ribs and the reinforced concrete slab are cast into a whole; the end part of the reinforced concrete slab is provided with a transverse concrete upturning rib, and the concrete upturning rib is higher than the upper surface of the reinforced concrete slab by a certain height; the vertical shearing net piece muscle has been arranged at longitudinal rib both ends, net piece muscle upper portion exposes the reinforced concrete board is high certainly, shearing net piece muscle is formed by the reinforcing bar bending type, and the shape is the S-shaped.
2. A prefabricated rib according to claim 1, wherein: the upper planes of the two sides of the reinforced concrete plate are provided with slopes which incline downwards.
3. A prefabricated rib according to claim 1, wherein: the thickness of the reinforced concrete plate is 30 mm-60 mm.
4. A prefabricated rib according to claim 1, wherein: the longitudinal rib height is greater than the transverse rib height.
5. A prefabricated rib according to claim 1, wherein: the distance between the longitudinal ribs is 300 mm-600 mm.
6. A prefabricated rib according to claim 1, wherein: the height of the longitudinal ribs is 150-350 mm.
7. A prefabricated rib according to claim 1, wherein: hooks are buried at two ends in the longitudinal rib concrete, and the upper parts of the hooks are exposed out of the reinforced concrete plates at a certain height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011343934.7A CN112302226B (en) | 2020-11-26 | 2020-11-26 | Prefabricated dense rib plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011343934.7A CN112302226B (en) | 2020-11-26 | 2020-11-26 | Prefabricated dense rib plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112302226A CN112302226A (en) | 2021-02-02 |
| CN112302226B true CN112302226B (en) | 2024-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011343934.7A Active CN112302226B (en) | 2020-11-26 | 2020-11-26 | Prefabricated dense rib plate |
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| Country | Link |
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| CN (1) | CN112302226B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482211B (en) * | 2021-08-22 | 2024-08-30 | 宁波优造建筑科技有限公司 | Prefabricated dense rib plate with shelving pick |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214006187U (en) * | 2020-11-26 | 2021-08-20 | 宁波优造建筑科技有限公司 | Prefabricated dense rib plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EA029731B1 (en) * | 2012-05-08 | 2018-05-31 | Куншан Эколоджикал Билдинг Текнолоджи Ко., Лтд. | Method of casting in-situ steel wire mesh cement slab with spliced rack and suspended formwork |
| CN202990196U (en) * | 2012-09-17 | 2013-06-12 | 杨众 | Partially prestressed prefabricated thin plate |
| CN108086553A (en) * | 2017-12-17 | 2018-05-29 | 湖南诚友绿色建材科技有限公司 | A kind of Lightweight core mould combined reinforced bar truss fabrication plate |
| CN111705987B (en) * | 2020-06-23 | 2025-04-01 | 中建研科技股份有限公司 | A large-span prefabricated ribbed prestressed hollow bidirectional composite slab |
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- 2020-11-26 CN CN202011343934.7A patent/CN112302226B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214006187U (en) * | 2020-11-26 | 2021-08-20 | 宁波优造建筑科技有限公司 | Prefabricated dense rib plate |
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| CN112302226A (en) | 2021-02-02 |
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