CN110080456B - Superimposed sheet bottom plate connected by end dowel bars and construction process thereof - Google Patents
Superimposed sheet bottom plate connected by end dowel bars and construction process thereof Download PDFInfo
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- CN110080456B CN110080456B CN201910343353.4A CN201910343353A CN110080456B CN 110080456 B CN110080456 B CN 110080456B CN 201910343353 A CN201910343353 A CN 201910343353A CN 110080456 B CN110080456 B CN 110080456B
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- CN
- China
- Prior art keywords
- bottom plate
- sleeve
- laminated slab
- slab bottom
- plate body
- Prior art date
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- 238000010276 construction Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 16
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000009415 formwork Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/28—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups combinations of materials fully covered by groups E04C2/04 and E04C2/08
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Panels For Use In Building Construction (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a laminated slab bottom plate connected by end dowel bars and a construction process thereof, comprising a laminated slab bottom plate body, wherein a group of sleeves are pre-embedded at the end of the laminated slab bottom plate body, and each sleeve is obliquely arranged; the sleeve is internally provided with a dowel bar, and the bottom end of the dowel bar is positioned at the outer side of the sleeve. The invention has the characteristics of convenient installation and reliable connection.
Description
Technical Field
The invention relates to a laminated slab bottom plate, in particular to a laminated slab bottom plate connected by end dowel bars and a construction process thereof.
Background
In response to building industrialization, more and more building elements are prefabricated in factories, wherein the horizontal element is one of the elements which are prefabricated in the factory at the earliest, because the prefabricated horizontal element has less influence on the earthquake resistance of the whole structure, and the horizontal element is simpler to manufacture and install. At present, the most widely used horizontal member prefabrication is a composite floor slab, which is an assembled integral floor slab formed by superposing a composite slab bottom plate and cast-in-situ reinforced concrete. According to the technical specification of assembly type structure (JGJ 1-2014) 6.6.4, longitudinal stress steel bars at the plate end of the laminated plate are preferably extended from the plate end and anchored into post-cast concrete of a supporting beam or a wall, the anchoring length is not less than 5d (d is the diameter of the longitudinal stress steel bars), and the longitudinal stress steel bars are preferably extended beyond the center line of a support, so that the longitudinal stress steel bars need to extend out of the laminated plate in a whole row like a beard, commonly called as a 'beard' steel bar. In order to solve the problems that precast concrete is damaged and unfilled at an angle caused by bending and deformation in the manufacturing, transportation and hoisting processes of the laminated slab bottom plate, and the mounting is troublesome caused by the fact that the 'Huzi' rib crosses with the upper longitudinal rib of the laminated slab supporting beam when the laminated slab bottom plate is hoisted in place; in the patent with the patent grant publication number of CN 207988291U and the patent name of a unidirectional laminated slab bottom plate with no ribs at the plate end, a ' the end part of the unidirectional laminated slab bottom plate does not extend out of the ' Huzi ' ribs, a plurality of mechanical connecting sleeves are embedded at the end part of the unidirectional laminated slab bottom plate, one end of each mechanical connecting sleeve is in equal-strength connection with longitudinal stress reinforcing steel bars in the unidirectional laminated slab bottom plate, and the other end of each mechanical connecting sleeve is in equal-strength connection with anchoring reinforcing steel bars. The technical scheme is used for solving the problems. However, after the laminated slab bottom plate is hoisted in place, as the connecting steel bars are required to be installed at the side ends of the laminated slab bottom plate, and the side ends of the connecting steel bars are beams or walls, the space of the beams or walls is smaller, the number of the steel bars is large, the operation of the connecting steel bars is inconvenient when the connecting steel bars are screwed up in a rotating way, the installation of the connecting steel bars is troublesome, and the reliability of connection is difficult to ensure. Therefore, the prior art has the problems that the installation is troublesome and the construction quality is difficult to ensure.
Disclosure of Invention
The invention aims to provide a laminated slab bottom plate connected by end dowel bars and a construction process thereof. The invention has the characteristics of convenient installation and reliable connection.
The technical scheme of the invention is as follows: the laminated slab bottom plate comprises a laminated slab bottom plate body, wherein a group of sleeves are pre-embedded at the end part of the laminated slab bottom plate body, and each sleeve is obliquely arranged; the sleeve is internally provided with a dowel bar, and the bottom end of the dowel bar is positioned below the sleeve.
In the laminated slab bottom plate connected with the end dowel bars, the inner wall of the sleeve is of an internal thread structure.
In the laminated slab bottom plate connected with the end dowel bars, the dowel bars comprise threaded rods matched with the sleeves of the internal thread structures, the lower ends of the threaded rods are provided with anchoring reinforcing bars, and the upper ends of the threaded rods are provided with nuts.
In the laminated slab bottom plate connected with the end dowel bars, the inner wall of the sleeve is of a smooth structure; the dowel bar is a connecting steel bar with a bending structure.
In the laminated slab bottom plate connected with the end dowel bars, the inclined included angle between the sleeve and the horizontal plane of the laminated slab bottom plate body is 20-60 degrees.
In the laminated slab bottom plate connected with the end dowel bars, the inclined included angle between the sleeve and the horizontal plane of the laminated slab bottom plate body is 45 degrees.
In the laminated slab bottom plate connected with the end dowel bars, a group of sleeves are respectively embedded at two symmetrical ends of the laminated slab bottom plate body.
In the laminated slab bottom plate connected with the end dowel bars, a group of sleeves are respectively embedded at the 4 side edges of the laminated slab bottom plate body.
A construction process of a laminated slab bottom plate connected by end dowel bars comprises the following steps:
A. manufacturing a bench die of the prefabricated laminated slab bottom plate according to design requirements;
B. arranging laminated slab bottom plate steel bars in the bench formwork according to design requirements;
C. after the sleeve is sealed, the sleeve is firmly bound on the reinforcing steel bar of the laminated slab bottom plate, so that the inclination angle of the sleeve is ensured to be within an error range;
D. pouring and curing concrete for the laminated slab bottom plate, and taking out to obtain a laminated slab bottom plate body;
E. and after the laminated slab bottom plate body is transported to the site and hoisted in place, the dowel bars are installed in the sleeve, and the bottom ends of the dowel bars penetrate through the sleeve and then are anchored into post-cast concrete of the supporting beam or the wall.
Compared with the prior art, the sleeve which is obliquely arranged is pre-buried at the end part of the laminated slab bottom plate body, and the dowel bars are arranged in the sleeve and are anchored into post-cast concrete of the supporting beam or the wall after penetrating through the sleeve, so that corresponding connection is realized. The technology does not need to install the connecting steel bars from one side of the supporting beam or the wall of the laminated slab bottom plate, the operation surface for installing the connecting steel bars is changed into one side in the laminated slab, the installation of the connecting steel bars of the laminated slab bottom plate is greatly facilitated, the construction quality can be effectively guaranteed, the labor intensity of workers is reduced, and the installation efficiency is improved. In addition, through setting up the sleeve into internal thread structure to cooperate with it through the threaded rod, make simple to operate, stable in connection is firm, realizes corresponding connection through setting up the anchor reinforcing bar in the threaded rod lower extreme, through setting up the nut in the upper end of threaded rod, not only the knob operation of the dowel bar of being convenient for has strengthened the anchor effect of dowel bar at the superimposed sheet moreover. In conclusion, the invention has the characteristics of convenient installation and reliable connection.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a view of the installation location of the sleeve of FIG. 1;
fig. 3 is a schematic structural view of the dowel bar in embodiment 1;
FIG. 4 is a schematic structural view of embodiment 2 of the present invention;
FIG. 5 is a schematic view of the sleeve of FIG. 4;
fig. 6 is a schematic structural view of the dowel in embodiment 2;
fig. 7 is an installation schematic perspective view of the sleeve.
The marks in the drawings are: 1-laminated slab bottom plate body, 2-sleeve, 3-dowel bar, 301-threaded rod, 302-anchor reinforcing bar, 303-nut.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not intended to be limiting.
Example 1. The laminated slab bottom plate with the end joint bars connected comprises a laminated slab bottom plate body 1 as shown in figures 1 to 3 and 7, wherein a group of sleeves 2 are embedded in the end part of the laminated slab bottom plate body 1, and each sleeve 2 is obliquely arranged; the sleeve 2 is internally provided with a dowel bar 3, and the bottom end of the dowel bar 3 is positioned below the sleeve 2. The dowel bars 3 are anchored into post-cast concrete of the support beam or wall after passing through the sleeves.
The inner wall of the sleeve 2 is of an internal thread structure.
The dowel bar 3 comprises a threaded rod 301 matched with the sleeve 2 of the internal thread structure, an anchoring reinforcing steel bar 302 is arranged at the lower end of the threaded rod 301, and a nut 303 is arranged at the upper end of the threaded rod 301.
The inclined included angle between the sleeve 2 and the horizontal plane of the laminated slab bottom plate body 1 is 20-60 degrees.
The inclined included angle between the sleeve 2 and the horizontal plane of the laminated slab bottom plate body 1 is 45 degrees.
Two symmetrical ends of the laminated slab bottom plate body 1 are respectively embedded with a group of sleeves 2. This is a unidirectional laminated slab floor.
A group of sleeves 2 are respectively embedded at the 4 side edges of the laminated slab bottom plate body 1. This is a bi-directional superimposed sheet base plate.
A construction process of a laminated slab bottom plate connected by end dowel bars comprises the following steps:
A. manufacturing a bench die of the prefabricated laminated slab bottom plate according to design requirements;
B. arranging laminated slab bottom plate steel bars in the bench formwork according to design requirements;
C. after the sleeve is sealed, the sleeve is firmly bound on the reinforcing steel bar of the laminated slab bottom plate, so that the inclination angle of the sleeve is ensured to be within an error range;
D. pouring and curing concrete for the laminated slab bottom plate, and taking out to obtain a laminated slab bottom plate body;
E. and after the laminated slab bottom plate body is transported to the site and hoisted in place, the dowel bars are installed in the sleeve, and the bottom ends of the dowel bars penetrate through the sleeve and then are anchored into post-cast concrete of the supporting beam or the wall.
And sealing the openings at the upper end and the lower end of the sleeve by adopting a plastic film, and tightly attaching the lower end of the sleeve to the side die. After pouring is finished, the upper end is exposed above the laminated slab bottom plate body, and the concrete layer at the opening of the lower end of the sleeve is thinner, so that the laminated slab bottom plate body can be broken by using the dowel bar when in use; it is also possible to prevent the concrete slurry from flowing into the sleeve by filling the foam in the sleeve.
The sleeve can be made of plastic or metal (such as iron, stainless steel, aluminum alloy, etc.). The interval between the sleeves can be designed according to the actual stress condition of the laminated slab bottom plate.
Example 2. The laminated slab bottom plate with the end joint bars connected comprises a laminated slab bottom plate body 1 as shown in fig. 4 to 7, wherein a group of sleeves 2 are pre-embedded at the end part of the laminated slab bottom plate body 1, and each sleeve 2 is obliquely arranged; the sleeve 2 is internally provided with a dowel bar 3, and the bottom end of the dowel bar 3 is positioned below the sleeve 2. The dowel bars 3 are anchored into post-cast concrete of the support beam or wall after passing through the sleeves.
The inner wall of the sleeve 2 is of a smooth structure; the dowel bar 3 is a connecting steel bar with a bending structure.
The inclined included angle between the sleeve 2 and the horizontal plane of the laminated slab bottom plate body 1 is 20-60 degrees.
The inclined included angle between the sleeve 2 and the horizontal plane of the laminated slab bottom plate body 1 is 45 degrees.
Two symmetrical ends of the laminated slab bottom plate body 1 are respectively embedded with a group of sleeves 2. This is a unidirectional laminated slab floor.
A group of sleeves 2 are respectively embedded at the 4 side edges of the laminated slab bottom plate body 1. This is a bi-directional superimposed sheet base plate.
A construction process of a laminated slab bottom plate connected by end dowel bars comprises the following steps:
A. manufacturing a bench die of the prefabricated laminated slab bottom plate according to design requirements;
B. arranging laminated slab bottom plate steel bars in the bench formwork according to design requirements;
C. after the sleeve is sealed, the sleeve is firmly bound on the reinforcing steel bar of the laminated slab bottom plate, so that the inclination angle of the sleeve is ensured to be within an error range;
D. pouring and curing concrete for the laminated slab bottom plate, and taking out to obtain a laminated slab bottom plate body;
E. and after the laminated slab bottom plate body is transported to the site and hoisted in place, the dowel bars are installed in the sleeve, and the bottom ends of the dowel bars penetrate through the sleeve and then are anchored into post-cast concrete of the supporting beam or the wall.
And sealing the openings at the upper end and the lower end of the sleeve by adopting a plastic film, and tightly attaching the lower end of the sleeve to the side die. After pouring is finished, the upper end is exposed above the laminated slab bottom plate body, and the concrete layer at the opening of the lower end of the sleeve is thinner, so that the laminated slab bottom plate body can be broken by using the dowel bar when in use; it is also possible to prevent the concrete slurry from flowing into the sleeve by filling the foam in the sleeve.
The sleeve can be made of plastic or metal (such as iron, stainless steel, aluminum alloy, etc.). The interval between the sleeves can be designed according to the actual stress condition of the laminated slab bottom plate.
Claims (4)
1. The utility model provides a superimposed sheet bottom plate that tip dowel connection, its characterized in that: the composite slab comprises a composite slab bottom plate body (1), wherein a group of sleeves (2) are pre-embedded at the end part of the composite slab bottom plate body (1), and each sleeve (2) is obliquely arranged; a dowel bar (3) is arranged in the sleeve (2), and the bottom end of the dowel bar (3) is positioned below the sleeve (2); the inner wall of the sleeve (2) is of an internal thread structure, the dowel bar (3) comprises a threaded rod (301) matched with the sleeve (2) of the internal thread structure, an anchoring reinforcing bar (302) is arranged at the lower end of the threaded rod (301), and a screw cap (303) is arranged at the upper end of the threaded rod (301); or the inner wall of the sleeve (2) is of a smooth structure; the dowel bars (3) are connecting steel bars with bending structures; the inclined included angle between the sleeve (2) and the horizontal plane of the laminated slab bottom plate body (1) is 20-60 degrees; two symmetrical ends of the laminated slab bottom plate body (1) are respectively embedded with a group of sleeves (2).
2. The end dowel bar connected laminated slab floor of claim 1, wherein: the inclined included angle between the sleeve (2) and the horizontal plane of the laminated slab bottom plate body (1) is 45 degrees.
3. The end dowel bar connected laminated slab floor of claim 1, wherein: a group of sleeves (2) are respectively embedded at the 4 side edges of the laminated slab bottom plate body (1).
4. A construction process for realizing the laminated slab bottom plate connected by the end dowel bar according to any one of claims 1 to 3, which is characterized by comprising the following steps:
A. manufacturing a bench die of the prefabricated laminated slab bottom plate according to design requirements;
B. arranging laminated slab bottom plate steel bars in the bench formwork according to design requirements;
C. after the sleeve is sealed, the sleeve is firmly bound on the reinforcing steel bar of the laminated slab bottom plate, so that the inclination angle of the sleeve is ensured to be within an error range;
D. pouring and curing concrete for the laminated slab bottom plate, and taking out to obtain a laminated slab bottom plate body;
E. and after the laminated slab bottom plate body is transported to the site and hoisted in place, the dowel bars are installed in the sleeve, and the bottom ends of the dowel bars penetrate through the sleeve and then are anchored into post-cast concrete of the supporting beam or the wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910343353.4A CN110080456B (en) | 2019-04-26 | 2019-04-26 | Superimposed sheet bottom plate connected by end dowel bars and construction process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910343353.4A CN110080456B (en) | 2019-04-26 | 2019-04-26 | Superimposed sheet bottom plate connected by end dowel bars and construction process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110080456A CN110080456A (en) | 2019-08-02 |
| CN110080456B true CN110080456B (en) | 2024-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910343353.4A Active CN110080456B (en) | 2019-04-26 | 2019-04-26 | Superimposed sheet bottom plate connected by end dowel bars and construction process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110080456B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09268519A (en) * | 1996-01-31 | 1997-10-14 | Hitachi Zosen Corp | Joint structure of mutual constituting members in a structure |
| CN104631218A (en) * | 2014-12-25 | 2015-05-20 | 隔而固(青岛)振动控制有限公司 | Floating slab and floating track bed thereof |
| CN108265867A (en) * | 2018-03-16 | 2018-07-10 | 浙江大学建筑设计研究院有限公司 | A kind of plate end and plate side do not go out the bidirectional laminated slab bottom plate and its construction method of muscle |
| CN207959646U (en) * | 2018-03-16 | 2018-10-12 | 青岛中建联合建设工程有限公司 | Prefabricated superimposed sheet |
| CN210316188U (en) * | 2019-04-26 | 2020-04-14 | 浙江大学建筑设计研究院有限公司 | Laminated slab bottom plate connected by end inserting ribs |
-
2019
- 2019-04-26 CN CN201910343353.4A patent/CN110080456B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09268519A (en) * | 1996-01-31 | 1997-10-14 | Hitachi Zosen Corp | Joint structure of mutual constituting members in a structure |
| CN104631218A (en) * | 2014-12-25 | 2015-05-20 | 隔而固(青岛)振动控制有限公司 | Floating slab and floating track bed thereof |
| CN108265867A (en) * | 2018-03-16 | 2018-07-10 | 浙江大学建筑设计研究院有限公司 | A kind of plate end and plate side do not go out the bidirectional laminated slab bottom plate and its construction method of muscle |
| CN207959646U (en) * | 2018-03-16 | 2018-10-12 | 青岛中建联合建设工程有限公司 | Prefabricated superimposed sheet |
| CN210316188U (en) * | 2019-04-26 | 2020-04-14 | 浙江大学建筑设计研究院有限公司 | Laminated slab bottom plate connected by end inserting ribs |
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| Publication number | Publication date |
|---|---|
| CN110080456A (en) | 2019-08-02 |
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