CN112031237A - Cast-in-place concrete hollow floor slab embedded type core mold anti-floating fixing device - Google Patents
Cast-in-place concrete hollow floor slab embedded type core mold anti-floating fixing device Download PDFInfo
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- CN112031237A CN112031237A CN202011006802.5A CN202011006802A CN112031237A CN 112031237 A CN112031237 A CN 112031237A CN 202011006802 A CN202011006802 A CN 202011006802A CN 112031237 A CN112031237 A CN 112031237A
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- Prior art keywords
- reinforcing mesh
- floating
- core
- plate
- cast
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- 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
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0636—Three-dimensional reinforcing mats composed of reinforcing elements laying in two or more parallel planes and connected by separate reinforcing parts
- E04C5/064—Three-dimensional reinforcing mats composed of reinforcing elements laying in two or more parallel planes and connected by separate reinforcing parts the reinforcing elements in each plane being formed by, or forming a, mat of longitunal and transverse bars
Abstract
The invention discloses an embedded core mould anti-floating fixing device of a cast-in-place concrete hollow floor slab, which comprises a bottom template, a slab bottom reinforcing mesh, an anti-floating reinforcing mesh and a slab top reinforcing mesh, wherein a core mould is supported at the top of the bottom template by a core mould support; the slab bottom reinforcing mesh is arranged between the core mold and the bottom mold plate, the bottom of the slab bottom reinforcing mesh is padded with a reinforcing cushion block, the anti-floating reinforcing mesh is covered on the top end surface of the core mold, the slab top reinforcing mesh is arranged on the top of the anti-floating reinforcing mesh, and a gap is reserved between the slab top reinforcing mesh and the anti-floating reinforcing mesh; the bottom plate reinforcing mesh is connected with the support steel pipe at the bottom of the bottom template through binding, the bottom plate reinforcing mesh is connected with the top plate reinforcing mesh through a connecting piece, the anti-floating reinforcing mesh is connected with the bottom plate reinforcing mesh through a connecting piece, and the connecting pieces are distributed around each core mold; the invention solves the problems that the cast-in-place concrete hollow floor cover plate PPE polymer alloy combined core mould is easy to float upwards and horizontally deviate in the concrete pouring process, thereby ensuring the thickness of the upper plate and the lower plate and ensuring the quality requirement.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an anti-floating fixing device for an embedded core mould of a cast-in-place concrete hollow floor slab.
Background
The project depends on basement engineering of people hospitals (plain hospitals) in Henan province, and has large construction scale, complex and various structures and fine regional division. In order to further improve the engineering construction quality, the energy conservation, environmental protection, benefit and quality are started. The non-main building area of the underground garage is a core-mold cast-in-place hollow slab, so that the span is large, and the top slab of the garage is high, so that the cast-in-place hollow floor slab structure has the characteristics of large span, light weight, good use performance, sound insulation, low manufacturing cost and convenience in construction, and accords with the characteristics of the basement building. The cast-in-place concrete hollow floor slab embedded PPE polymer alloy combined core mold anti-floating fixing device has the advantages that the reinforced concrete stress member is sheared through the combined action of the steel bars in the tension area and the concrete in the compression area, sometimes the shearing force of the central part of the member is very small, the concrete action is not obvious, and a part can be excavated. This part can be replaced by a hollow plate.
The underground garage cast-in-place concrete hollow floor comprises a floor body which is formed with a cavity in the floor slab by placing the embedded inner mold according to a certain rule and then casting concrete in situ.
Embedding a human-shaped internal mold: the cylinder core, the box body, the cylinder body and the block body are embedded in the cast-in-place concrete hollow floor to form a cavity and are not taken out.
The whole thickness of the hollow plate is 500mm, the thickness of the upper plate is 120mm, the thickness of the lower plate is 90mm, and the hollow height is 290 mm.
In the construction of the traditional hollow floor, the core mold has light dead weight and is not easy to fix, and the upward floating and the deviation are easy to occur in the concrete pouring process, so that the reinforced concrete protective layer has larger deviation and the plate thickness deviation is larger, thereby influencing the solid quality of concrete.
Disclosure of Invention
The invention aims to provide an anti-floating fixing device for an embedded core mould of a cast-in-place concrete hollow floor slab, which solves the problems in the prior art and the problems that a PPE polymer alloy combined core mould of the cast-in-place concrete hollow floor slab is easy to float upwards and horizontally deviate in the concrete pouring process, thereby ensuring the thickness of an upper plate and a lower plate and ensuring the quality requirement.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides an embedded core mould anti-floating fixing device of a cast-in-place concrete hollow floor slab, which comprises a bottom template, a slab bottom reinforcing mesh, an anti-floating reinforcing mesh and a slab top reinforcing mesh, wherein a core mould is distributed at the top of the bottom template and supported by a core mould bracket; the bottom plate reinforcing mesh is arranged between the core mold and the bottom mold plate, a reinforcing cushion block is arranged between the bottom plate reinforcing mesh and the bottom mold plate, a gap is reserved between the bottom end surface of the core mold and the bottom plate reinforcing mesh, the anti-floating reinforcing mesh is covered on the top end surface of the core mold, the top plate reinforcing mesh is arranged at the top of the anti-floating reinforcing mesh, and a gap is reserved between the top plate reinforcing mesh and the anti-floating reinforcing mesh; the bottom reinforcing mesh is connected with the support steel pipe at the bottom of the bottom formwork through binding, the bottom reinforcing mesh is connected with the top reinforcing mesh through a first connecting piece, the anti-floating reinforcing mesh is connected with the bottom reinforcing mesh through a second connecting piece, and the two connecting pieces are distributed around each core formwork.
Preferably, the core moulds are distributed in a rectangular shape, and two core mould supports are arranged at the bottom of each core mould.
Preferably, the first connecting piece is a horse stool rib.
Preferably, the cross-section of the core mold is rectangular, and the connecting member is located at the vertical center of the four side walls of the core mold.
Preferably, the second connecting piece is a wire which is vertically bound and connected with the anti-floating reinforcing mesh and the slab-bottom reinforcing mesh.
Preferably, the steel bars of the rib beam between the core moulds penetrate through the bottom mould plate through iron wires and are bound and connected with the support steel pipes.
Compared with the prior art, the invention has the following beneficial technical effects:
the embedded core mould anti-floating fixing device for the cast-in-place concrete hollow floor slab effectively solves the problem of concrete protection layer of each core mould, the reinforcing steel bars in the rows and the reinforcing steel bars in the rows are fully stressed, and the problems that the PPE polymer alloy combined core mould of the cast-in-place concrete hollow floor slab is easy to float upwards and horizontally deviate in the concrete pouring process are solved, so that the thickness of the upper plate and the lower plate is ensured, the quality requirement is ensured, and the technical problems that the workload of the traditional core mould fixing method is large, the integral rigidity of a reinforcing mesh is low, and the workload of later repair of the core mould is large are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic sectional view of an anti-floating fixing device for an embedded core mold of a cast-in-place concrete hollow floor slab according to the present invention;
in the figure: 1-bottom template, 2-bottom reinforcing mesh, 3-anti-floating reinforcing mesh, 4-top reinforcing mesh, 5-core mold, 6-core mold bracket, 7-reinforcing cushion block, 8-first connecting piece, 9-second connecting piece and 10-ribbed beam.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an anti-floating fixing device for an embedded core mould 5 of a cast-in-place concrete hollow floor slab, which aims to solve the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The device for fixing the embedded core module of the cast-in-place concrete hollow floor slab in the embodiment, as shown in fig. 1, includes a bottom formwork 1, a slab bottom reinforcing mesh 2, an anti-floating reinforcing mesh 3 and a slab top reinforcing mesh 4, a core module 5 is distributed on the top of the bottom formwork 1 in a rectangular shape and supported by core module supports 6, and two core module supports 6 are arranged at the bottom of each core module 5; the bottom plate reinforcing mesh 2 is arranged between the core mould 5 and the bottom mould plate 1, a reinforcing cushion block 7 is arranged between the bottom plate reinforcing mesh 2 and the bottom mould plate 1, a gap is reserved between the bottom end surface of the core mould 5 and the bottom plate reinforcing mesh 2, the anti-floating reinforcing mesh 3 covers the top end surface of the core mould 5, the top plate reinforcing mesh 4 is arranged at the top of the anti-floating reinforcing mesh 3, and a gap is reserved between the top plate reinforcing mesh 4 and the anti-floating reinforcing mesh 3; the bottom plate reinforcing mesh 2 is connected with the support steel pipe at the bottom of the bottom template 1 through iron wire binding, the bottom plate reinforcing mesh 2 is connected with the top plate reinforcing mesh 4 through a first connecting piece 8, the anti-floating reinforcing mesh 3 is connected with the bottom plate reinforcing mesh 2 through a second connecting piece 9, and the second connecting pieces 9 are distributed around each core mold 5.
In this embodiment, the first connecting member 8 is a horse stool rib.
In this embodiment, the cross section of the core mold 5 is rectangular, the second connecting member 9 is located at the vertical center of the four side walls of the core mold 5, the second connecting member 9 is a # 12 iron wire vertically binding and connecting the anti-floating reinforcement mesh 3 and the slab-bottom reinforcement mesh 2, and the bound iron wire is vertically tightened to control the front, back, left and right displacement of the core mold 5.
In this embodiment, the reinforcing bars of the rib beam 10 between the core molds 5 are bound and connected with the support steel pipes by iron wires passing through the bottom mold plate 1.
In this embodiment, the anti-floating reinforcing mesh 3 is arranged with HRB400 Φ 12 in a longitudinal and transverse direction, so as to effectively control the core mold 5 to move up and down.
The core mould fixing method adopts that HRB400 phi 12 steel bars are longitudinally and transversely arranged on the top of the core mould in a through manner to ensure the horizontal position of the core mould 5 and control upward floating, a shaping support is arranged at the bottom of the core mould 5, the thickness of an upper plate and the thickness of a plate bottom are controlled, 12# iron wires are arranged to bind the anti-floating steel bars on the periphery of the top of the core mould 5 with the plate bottom steel bars, the core mould 5 is horizontally fixed and also connected with the anti-floating steel bars into a whole, the 12# iron wires are arranged at intervals to penetrate through a template to bind and fix the plate bottom steel bars on a steel pipe support at the lower part, so that the core mould 5, floor slab steel bars and a template support are.
The construction process flow of the cast-in-place concrete hollow floor slab embedded type core mold anti-floating fixing device is as follows:
(1) construction survey
The axis position and elevation are guided from the set control points to the construction layer.
(2) Formwork support system
The formwork supporting system refers to a special high and large formwork supporting safety construction scheme which is demonstrated by experts, after the formwork is installed and is checked to be qualified, pay-off positioning is carried out on the rib beam 10, the core mould 5, the embedded pipe, the hole and the like, and sequential construction can be carried out after checking is carried out.
(3) Binding of reinforcing steel bars
And (6) binding beam reinforcements.
And secondly, placing main stressed steel bars at the bottom of the plate. Binding the bottom secondary stressed steel bar of the plate, and well filling a protective layer cushion block.
Thirdly, adopting a 12# iron wire to pass through the template to bind and fix the plate bottom reinforcing steel bars on the steel pipe bracket at the lower part of the bottom template 1, wherein the longitudinal and transverse spacing is 650mmx650 mm.
(4) Core mold installation
Before core mold construction, arrangement design must be carried out according to the plane size of each floor slab in a design drawing, the position of a construction joint, the reserved pre-embedding condition, the arrangement direction and the design length of the core mold.
Core mould horizontal displacement control and anti-floating
When concrete is poured, the core die has light dead weight and generates larger buoyancy, so the core die needs to be fixed, otherwise, the core die can move left and right and float upwards to jack up reinforcing steel bars on a floor slab, and quality accidents occur. Firstly, 2 finished core mould supports 6 are placed under each core mould at the bottom of a plate, after the core moulds are placed, longitudinal and transverse through long anti-floating reinforcing steel bars HRB400 phi 12 are used for forming an anti-floating reinforcing steel bar net 3 for fixation, 12# iron wires are used for vertically binding and connecting the anti-floating reinforcing steel bars (four points) at the periphery of each core mould 5 with the plate bottom reinforcing steel bar net, the anti-floating reinforcing steel bars are bound with the steel pipe supports at the bottom of the front plate bottom reinforcing steel bar net and the plate by the iron wires to form an integral anti-floating system, and the iron wires are required to be straightened and tensioned so as to effectively resist the upper buoyancy and.
(5) Plate top reinforcing mesh 4 binding
Plate top reinforcing mesh 4: binding gluten according to the requirement of a design drawing.
(6) Pouring of concrete
After the steel bars are concealed and accepted and the core mould 5 is fixed and accepted, concrete can be poured.
Secondly, the concrete construction adopts a construction method of conveying commercial concrete and a conveying pump. The slump of the concrete mixture is preferably 180 mm. + -. 20 mm.
And thirdly, when concrete is poured, a carpenter and a steel bar worker are required to follow the concrete, and the core mold and the steel bar are timely prevented from deviating and being damaged.
And fourthly, when in construction, firstly pouring concrete at the column part, and then pouring concrete at the beam and the plate part. When the concrete of the beam and the slab part is poured, the concrete is prevented from directly impacting the core mould part. And pouring concrete with each plate thickness step by step. First, the entire mandrel rib of each slab is concrete-cast to a height of 1/2 deg.f, preferably by carefully vibrating the concrete using a 3cm diameter insert vibrator inserted at a 300mm pitch. All rib parts must be vibrated according to the specified interval, and vibration leakage cannot occur, so that the air below the core die can be completely removed, and the concrete below the core die is vibrated and compacted. And then, continuously pouring concrete to the designed elevation of the slab and vibrating fully.
Fifthly, if concrete is poured to the top of the plate at one time, the rib part of the plate is covered by the concrete, which not only is inconvenient for vibrating, but also makes the air under the core mould 5 difficult to discharge, and easily causes the concrete under the core mould to be not compact by vibrating, and honeycombs, pitted surfaces and even holes appear. After all rib concrete of the slab is compactly poured and vibrated, the concrete with the residual slab thickness can be poured to the designed elevation, and the rib concrete is vibrated twice. The fixed iron wire left under the floor is cut off along the bottom of the floor by a grinder after the bottom template 1 is removed.
(7) Concrete curing and form removal
Concrete maintenance: and (5) covering, watering and curing, wherein after the hollow floor concrete is poured for 12 hours, the wet gunny bag is used for covering, watering and curing for 7 days. When the line is paid off, the lifted wet gunny bag is required to be timely restored to cover after the line is bounced.
Stripping the mold: when the strength of concrete can ensure that the surface and edges and corners of the concrete are not damaged, the wall column template can be removed, but when the column template is removed, the column cap template cannot be removed along with the column body template, and the column cap template and the top plate template are removed together.
The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (6)
1. The utility model provides an anti fixing device that floats of formula mandrel is buryyed to hollow floor slab of cast in situ concrete which characterized in that: the core die is distributed on the top of the bottom die plate and is supported by a core die support; the bottom plate reinforcing mesh is arranged between the core mold and the bottom mold plate, a reinforcing cushion block is arranged between the bottom plate reinforcing mesh and the bottom mold plate, a gap is reserved between the bottom end surface of the core mold and the bottom plate reinforcing mesh, the anti-floating reinforcing mesh is covered on the top end surface of the core mold, the top plate reinforcing mesh is arranged at the top of the anti-floating reinforcing mesh, and a gap is reserved between the top plate reinforcing mesh and the anti-floating reinforcing mesh; the bottom reinforcing mesh is connected with the support steel pipe at the bottom of the bottom formwork through binding, the bottom reinforcing mesh is connected with the top reinforcing mesh through a first connecting piece, the anti-floating reinforcing mesh is connected with the bottom reinforcing mesh through a second connecting piece, and the two connecting pieces are distributed around each core formwork.
2. The cast-in-place concrete hollow floor slab embedded core mold anti-floating fixing device as claimed in claim 1, characterized in that: the core moulds are distributed in a rectangular shape, and two core mould supports are arranged at the bottom of each core mould.
3. The cast-in-place concrete hollow floor slab embedded core mold anti-floating fixing device as claimed in claim 1, characterized in that: the first connecting piece is a horse stool rib.
4. The cast-in-place concrete hollow floor slab embedded core mold anti-floating fixing device as claimed in claim 1, characterized in that: the cross section of the core mould is rectangular, and the two connecting pieces are positioned at the vertical centers of the four side walls of the core mould.
5. The cast-in-place concrete hollow floor slab embedded core mold anti-floating fixing device as claimed in claim 1, characterized in that: the second connecting piece is an iron wire which is vertically bound and connected with the anti-floating reinforcing mesh and the slab bottom reinforcing mesh.
6. The cast-in-place concrete hollow floor slab embedded core mold anti-floating fixing device as claimed in claim 1, characterized in that: and reinforcing steel bars of the rib beams between the core molds penetrate through the bottom template through iron wires and are bound and connected with the support steel pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011006802.5A CN112031237A (en) | 2020-09-23 | 2020-09-23 | Cast-in-place concrete hollow floor slab embedded type core mold anti-floating fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011006802.5A CN112031237A (en) | 2020-09-23 | 2020-09-23 | Cast-in-place concrete hollow floor slab embedded type core mold anti-floating fixing device |
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| Publication Number | Publication Date |
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| CN112031237A true CN112031237A (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011006802.5A Pending CN112031237A (en) | 2020-09-23 | 2020-09-23 | Cast-in-place concrete hollow floor slab embedded type core mold anti-floating fixing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112692986A (en) * | 2021-01-14 | 2021-04-23 | 宝业西伟德混凝土预制件（合肥）有限公司 | Method for preventing filler material in light partition board from floating upwards |
| CN113309281A (en) * | 2021-06-03 | 2021-08-27 | 安徽同济建设集团有限责任公司 | Light filling protective layer for hollow floor slab and processing method thereof |
-
2020
- 2020-09-23 CN CN202011006802.5A patent/CN112031237A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112692986A (en) * | 2021-01-14 | 2021-04-23 | 宝业西伟德混凝土预制件（合肥）有限公司 | Method for preventing filler material in light partition board from floating upwards |
| CN113309281A (en) * | 2021-06-03 | 2021-08-27 | 安徽同济建设集团有限责任公司 | Light filling protective layer for hollow floor slab and processing method thereof |
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