CN111139961A - Prefabricated composite floor part of assembled - Google Patents
Prefabricated composite floor part of assembled Download PDFInfo
- Publication number
- CN111139961A CN111139961A CN202010056216.5A CN202010056216A CN111139961A CN 111139961 A CN111139961 A CN 111139961A CN 202010056216 A CN202010056216 A CN 202010056216A CN 111139961 A CN111139961 A CN 111139961A
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- CN
- China
- Prior art keywords
- steel
- steel bar
- bars
- floor
- floor slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 83
- 239000010959 steel Substances 0.000 claims abstract description 83
- 239000004567 concrete Substances 0.000 claims abstract description 11
- 238000010079 rubber tapping Methods 0.000 claims description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 8
- 210000003205 muscle Anatomy 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004083 survival effect Effects 0.000 description 3
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011210 fiber-reinforced concrete Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- E04B5/16—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
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
Abstract
The invention discloses an assembled prefabricated combined floor part, which comprises a high-precision non-dismantling template, combined formed steel bar products and connecting screws, wherein a plurality of high-precision non-dismantling templates form a floor bottom surface, the single surface of the high-precision non-dismantling template is roughened by adopting a rectangular groove, the combined formed steel bar products are placed above the floor bottom surface and are connected together through a plurality of H-shaped steels, the opening sides of the H-shaped steels are connected to the bottom surface of the combined formed steel bar products, the closed sides are connected with the roughened surface of the rectangular groove of the floor through the connecting screws and then poured with concrete to form a prefabricated floor, and reserved wire-wiring tubes are arranged on the high-precision non-dismantling template and the combined formed steel bar products. The invention has the advantages of ingenious conception, compact and reasonable structure, the combined formed steel bar products and the bottom surface of the floor slab are prefabricated by factories, the combined floor slab part is thinner than a prefabricated composite floor slab, the prefabricated part is light, the hoisting and the transportation are facilitated, the cost is reduced, the workload is reduced by the design of the dismounting-free template, and the requirement of high flatness of the combined beam is ensured.
Description
Technical Field
The invention relates to the field of prefabricated concrete structure buildings, in particular to a prefabricated composite floor slab component.
Background
In the prefabricated concrete structure building, a prefabricated composite floor slab is mostly adopted as a horizontal bearing component. The prefabricated composite floor slab is a formwork-free floor slab, the thickness of a prefabricated part is generally 6 centimeters, pouring is carried out after hoisting and installation, post-cast concrete is effectively laminated with the prefabricated part, and the thickness of the post-cast part is generally 7 centimeters. The prefabricated composite floor slab has heavy weight, difficult transportation and hoisting and higher cost. In addition, the survival thickness of the prefabricated composite floor slab is generally 13 centimeters, and compared with the survival thickness of the traditional cast-in-place floor slab which is about 3 centimeters thick, the net height of the floor slab is influenced. Therefore, how to develop a novel floor slab to reduce weight, be convenient for hoist and mount, guarantee the net height of floor, become the technological problem that technical personnel in the field need to solve urgently.
Disclosure of Invention
The invention aims to provide an assembly type prefabricated composite floor slab part, which solves the problems that the prefabricated composite floor slab in the prior art is heavy in structure, difficult to transport, hoist and construct, high in cost, large in thickness of a whole survival body and capable of influencing the net height of floors.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses an assembled prefabricated combined floor part which comprises a high-precision disassembly-free template, combined formed steel bar products and connecting screws, wherein a plurality of high-precision disassembly-free templates form a floor bottom surface, the single surface of each high-precision disassembly-free template is roughened by a rectangular groove, the combined formed steel bar products are placed above the floor bottom surface and are connected together through a steel in a shape like a Chinese character 'ji', the opening sides of the steel in the shape like the Chinese character 'ji' are connected to the bottom surface of the combined formed steel bar products, the closed sides of the steel in the shape like the Chinese character 'ji' are connected with the roughened surface of the high-precision disassembly-free template on the floor bottom surface through the connecting screws, concrete is poured to form a prefabricated floor, and reserved wire pipes are arranged on the high-precision.
Furthermore, the combined forming steel bar product comprises a plurality of bottom stress bars and a plurality of steel bar trusses which are connected to form a plurality of parallel arrangement of the bottom stress bars, a plurality of equidistant uniform distribution of the steel bar trusses are arranged above the bottom stress bars, and the opening side of the U-shaped steel bar is connected to the bottom stress bars and the steel bar trusses.
Still further, a plurality of the shape steel of several words with bottom atress muscle, steel bar truss are arranged perpendicularly, and is a plurality of the shape steel of several words is equidistant to be arranged.
Still further, the steel bar truss comprises two inclined bent steel bars and three linear steel bars, the three linear steel bars are arranged in a triangular mode, and the upper bending points and the lower bending points of the two symmetrically arranged bent steel bars are connected to the three linear steel bars.
Still further, the bent reinforcing steel bars and the straight reinforcing steel bars are welded together.
Still further, the connecting screw adopts countersunk head tapping screw, and the nut department brush of countersunk head tapping screw has anti-rust paint.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention relates to an assembly type prefabricated combined floor part, which comprises a high-precision non-dismantling template, a combined formed steel bar product and connecting screws, wherein a plurality of high-precision non-dismantling templates form a floor bottom surface, the combined formed steel bar product is formed by connecting a plurality of bottom stress bars and a plurality of steel bar trusses, the combined formed steel bar product is placed above the floor bottom surface and is connected together through a plurality of T-shaped steel bars, and reserved wire casing pipes are arranged on the high-precision non-dismantling template and in the combined formed steel bar product. The assembly type prefabricated combined floor slab part has the advantages that the use of the high-precision disassembly-free template avoids the die sinking and pouring processes in the production process, the production cost is saved, and the production period is shortened; the combined and molded steel bar product has light components, the transportation amount of a single vehicle is increased, the transportation cost is saved, no special requirement is imposed on the load of a tower crane, and the hoisting cost is saved; the floor slab adopting the prefabricated combined floor slab part has the advantages that the top stress bar can still follow the connection mode of a cast-in-place system, such as mechanical connection, binding, welding and the like, and the connection is reliable; the time for dismantling, installing and turning over the template in the construction stage is saved, the construction progress is accelerated, and the requirement of high flatness is met.
The invention inherits the development idea of an assembly type building, and effectively combines a high-precision dismantling-free template and a combined formed reinforcing steel bar product through a special connecting piece, thereby generating a novel formwork-free floor part, wherein the prefabricated part of the formwork-free floor part is reduced to about 1.5 cm from the original 6 cm, the weight of the part is effectively reduced, the consumption of concrete is saved, the hoisting and the transportation are facilitated, and the cost is reduced. In addition, this adopt floor of prefabricated composite floor part of assembled, the connected mode of top atress muscle is the same basically with conventional cast in situ concrete building connected mode, reduces the construction degree of difficulty, guarantees structural security.
The invention has the advantages of ingenious conception, compact and reasonable structure, light weight, easy hoisting and transportation, low cost, no need of dismantling the template, reduced workload and high flatness requirement of the composite beam, and the combined formed steel bar product and the floor bottom surface which are used as the component parts are all prefabricated by factories.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a top plan view of an assembled prefabricated composite floor component of the present invention;
FIG. 2 is a left side view of an assembled prefabricated composite floor component of the present invention;
FIG. 3 is a cross-sectional view of the invention A-A;
FIG. 4 is an enlarged view of the position E in FIG. 2 according to the present invention;
FIG. 5 is an enlarged view of the position F of FIG. 3 according to the present invention;
description of reference numerals: 1. a high-precision dismounting-free template; 2. bottom stress ribs; 3. a steel bar truss; 4. a few shaped steel; 5. a connecting screw; 6. and reserving a wire tube of the wire box.
Detailed Description
As shown in fig. 1-5, a prefabricated composite floor part of assembled, including high accuracy exempt from to tear open template 1, combination shaping reinforcing bar goods and connecting screw 5, the polylith the floor bottom surface is constituteed to high accuracy exempt from to tear open template 1, and 1 single face of high accuracy exempt from to tear open template adopts the rectangular channel to bore a hair, combination shaping reinforcing bar goods are placed the top of floor bottom surface links together through a few style of calligraphy steel 4, the opening side of a few style of calligraphy steel 4 connects on the bottom surface of combination shaping reinforcing bar goods, the close side of a few style of calligraphy steel 4 through connecting screw 5 with the floor bottom surface high accuracy exempt from to tear open template and bore concrete behind the connection and form prefabricated floor, be provided with in the high accuracy exempt from to tear open template and the combination shaping reinforcing bar goods and reserve line case 6.
Specifically, combination shaping reinforcing bar goods include many bottom atress muscle 2 and a plurality of steel bar truss 3 and connect and form, many bottom atress muscle 2 parallel arrangement, it is a plurality of steel bar truss 3 equidistant equipartition is in the top of bottom atress muscle 2, the opening side of a few style of calligraphy shaped steel 4 is connected on bottom atress muscle 2 and the steel bar truss 3.
In the embodiment shown in fig. 1, seven inverted-V-shaped steel sections 4, eleven bottom stress bars 2 and steel bar trusses 3 are vertically arranged, and the seven inverted-V-shaped steel sections 4 are arranged at equal intervals. Specifically, after the area of the actual floor is measured and calculated, a proper amount of materials are selected to form the floor.
The steel bar truss comprises two inclined bent steel bars and three straight steel bars, the three straight steel bars are arranged in a triangular mode, and the upper bending points and the lower bending points of the two symmetrically arranged bent steel bars are connected to the three straight steel bars. Specifically, the bent reinforcing steel bars and the straight reinforcing steel bars are welded together.
The connecting screw 5 is a countersunk self-tapping screw, and the nut of the countersunk self-tapping screw is brushed with anti-rust paint to prevent the countersunk self-tapping screw from rusting and corroding, so that the service life of the countersunk self-tapping screw is prolonged.
The manufacturing and assembling process of the invention is as follows:
first step, preparation of materials: preparing a high-precision non-dismantling template 1, a bottom stress bar 2, a steel bar truss 3, a n-shaped steel 4 and a connecting screw 5 for the prefabricated assembled composite floor slab part;
and step two, manufacturing a combined formed steel bar product:
firstly, cutting a prepared steel bar into a plurality of bottom stress bars 2 with required lengths and steel bars for a steel bar truss 3;
then, a plurality of n-shaped steel sections 4 are arranged at equal intervals, the bottom stress rib 2 and a plurality of triangular steel bar trusses 3 are placed above the n-shaped steel sections 4 in parallel, and the n-shaped steel sections 4, the bottom stress rib 2 and the steel bar trusses 3 are vertically arranged and welded together;
thirdly, manufacturing the bottom surface of the floor slab:
one side of each high-precision disassembly-free template 1 is subjected to roughening treatment by adopting a rectangular groove, and the roughened surfaces are spliced in the same direction to form a large flat plate with a required area;
fourthly, assembling in a factory:
1) placing the combined formed steel bar product on a high-precision non-dismantling template 1, and fixedly connecting the napped surface of the high-precision non-dismantling template 1 and the inverted V-shaped steel 4 together through a connecting screw 5;
2) and (4) performing rust-proof treatment, and brushing rust-proof paint at the nut of the countersunk head self-tapping screw.
Fifthly, assembling on a construction site: the prefabricated composite floor slab component is transported to a construction site and then hoisted to an installation position by a tower crane, a plurality of prefabricated composite floor slab components are spliced into a floor slab, and a stress bar at the top of the floor slab is erected and connected above the prefabricated composite floor slab components;
sixthly, pouring; after the prefabricated combined floor slab part and the stress bars on the top of the floor slab are installed, concrete is poured on site to form a bearing member.
The high-precision disassembly-free formwork is made of fiber reinforced concrete materials, so that impact force and vibrating force generated in the concrete pouring process are met, high flatness and high verticality of the outer surface can be guaranteed, plastering is avoided, and the requirement that all formworks at the pouring enclosing part are not disassembled is met. The combined forming reinforcing steel bar product is produced by adopting a factory automatic production line, the production precision is high, the material consumption is saved, and the quality problem caused by artificial factors is avoided.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (6)
1. An assembled prefabricated composite floor component which is characterized in that: exempt from form (1), combination shaping reinforcing bar goods and connecting screw, polylith including the high accuracy the floor bottom surface is constituteed in form (1) is exempted from to tear open to the high accuracy, and form (1) single face is exempted from to tear open to the high accuracy adopts the rectangular channel to bore a hair, combination shaping reinforcing bar goods are placed the top of floor bottom surface links together through a few style of calligraphy shaped steel (4), the opening side of a few style of calligraphy shaped steel (4) is connected on the bottom surface of combination shaping reinforcing bar goods, the close mouthful side of a few style of calligraphy shaped steel (4) pass through connecting screw (5) with form is exempted from to tear open to the floor bottom surface high accuracy and is drawn the hair face and connect the back and pour concrete and form prefabricated floor, on the form is exempted from to tear open to the high accuracy.
2. The fabricated prefabricated composite floor slab part of claim 1, wherein: the combined forming steel bar product comprises a plurality of bottom stress bars (2) and a plurality of steel bar trusses (3) which are connected and formed, the bottom stress bars (2) are arranged in parallel, the steel bar trusses (3) are uniformly distributed at equal intervals above the bottom stress bars (2), and the opening sides of the U-shaped steel bars (4) are connected to the bottom stress bars (2) and the steel bar trusses (3).
3. The fabricated prefabricated composite floor slab part of claim 2, wherein: a plurality of the n-shaped steel sections (4) are vertically arranged with the bottom stress bar (2) and the steel bar truss (3), and a plurality of the n-shaped steel sections (4) are arranged at equal intervals.
4. The fabricated prefabricated composite floor slab part of claim 2, wherein: the steel bar truss comprises two inclined bent steel bars and three straight steel bars, the three straight steel bars are arranged in a triangular mode, and the upper bending points and the lower bending points of the two symmetrically arranged bent steel bars are connected to the three straight steel bars.
5. The fabricated prefabricated composite floor slab part of claim 4, wherein: the bent reinforcing steel bars and the straight reinforcing steel bars are welded together.
6. The fabricated prefabricated composite floor slab part of claim 1, wherein: the connecting screw (5) is a countersunk self-tapping screw, and the nut of the countersunk self-tapping screw is brushed with antirust paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010056216.5A CN111139961A (en) | 2020-01-18 | 2020-01-18 | Prefabricated composite floor part of assembled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010056216.5A CN111139961A (en) | 2020-01-18 | 2020-01-18 | Prefabricated composite floor part of assembled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111139961A true CN111139961A (en) | 2020-05-12 |
Family
ID=70526481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010056216.5A Pending CN111139961A (en) | 2020-01-18 | 2020-01-18 | Prefabricated composite floor part of assembled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111139961A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608308A (en) * | 2020-05-19 | 2020-09-01 | 黄通 | Distributed three-dimensional factory floor and preparation method |
| CN112459329A (en) * | 2020-11-13 | 2021-03-09 | 重庆中科建设（集团）有限公司 | Laminated floor truss and bottom rib arrangement method |
| CN113833189A (en) * | 2021-09-26 | 2021-12-24 | 浙江汉德邦建材有限公司 | Steel bar truss floor support plate without detaching bottom die |
| CN113914526A (en) * | 2021-11-24 | 2022-01-11 | 中建安装集团有限公司 | Prefabricated formwork-free floor and construction method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04333705A (en) * | 1991-05-05 | 1992-11-20 | Sakai Tekkosho:Kk | Fibre-reinforced resin permanent formwork for concrete floor slab and construction thereof and frp-reinforced concrete slab |
| JP2007046364A (en) * | 2005-08-11 | 2007-02-22 | Nitto Boseki Co Ltd | Permanent form made of fiber reinforced resin for use of reinforced concrete floor slabs |
| CN204940642U (en) * | 2015-09-18 | 2016-01-06 | 董启灏 | A kind of fiber cement board that adopts is the floor support plate of bed die |
| CN205776986U (en) * | 2016-05-26 | 2016-12-07 | 青岛海川建设集团有限公司 | A kind of BRT Lightweight core mould close rib composite floor plate |
| CN207211464U (en) * | 2017-08-17 | 2018-04-10 | 宝润达新型材料有限公司 | A kind of new reinforcing steel bar truss plate |
| CN207296117U (en) * | 2017-08-23 | 2018-05-01 | 京工建（北京）钢结构工程有限公司 | Integral type steel bar truss floor support plate structure |
| CN108442597A (en) * | 2018-05-15 | 2018-08-24 | 哈尔滨鸿盛建筑材料制造股份有限公司 | It is prefabricated to exempt to tear flooring superimposed sheet open |
| CN209620363U (en) * | 2018-08-30 | 2019-11-12 | 李予新 | It is a kind of to exempt from demoulding steel bar truss floor support plate using high-strength fabric cement plate as bed die |
| CN211572189U (en) * | 2020-01-18 | 2020-09-25 | 高慧静 | Prefabricated composite floor part of assembled |
-
2020
- 2020-01-18 CN CN202010056216.5A patent/CN111139961A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04333705A (en) * | 1991-05-05 | 1992-11-20 | Sakai Tekkosho:Kk | Fibre-reinforced resin permanent formwork for concrete floor slab and construction thereof and frp-reinforced concrete slab |
| JP2007046364A (en) * | 2005-08-11 | 2007-02-22 | Nitto Boseki Co Ltd | Permanent form made of fiber reinforced resin for use of reinforced concrete floor slabs |
| CN204940642U (en) * | 2015-09-18 | 2016-01-06 | 董启灏 | A kind of fiber cement board that adopts is the floor support plate of bed die |
| CN205776986U (en) * | 2016-05-26 | 2016-12-07 | 青岛海川建设集团有限公司 | A kind of BRT Lightweight core mould close rib composite floor plate |
| CN207211464U (en) * | 2017-08-17 | 2018-04-10 | 宝润达新型材料有限公司 | A kind of new reinforcing steel bar truss plate |
| CN207296117U (en) * | 2017-08-23 | 2018-05-01 | 京工建（北京）钢结构工程有限公司 | Integral type steel bar truss floor support plate structure |
| CN108442597A (en) * | 2018-05-15 | 2018-08-24 | 哈尔滨鸿盛建筑材料制造股份有限公司 | It is prefabricated to exempt to tear flooring superimposed sheet open |
| CN209620363U (en) * | 2018-08-30 | 2019-11-12 | 李予新 | It is a kind of to exempt from demoulding steel bar truss floor support plate using high-strength fabric cement plate as bed die |
| CN211572189U (en) * | 2020-01-18 | 2020-09-25 | 高慧静 | Prefabricated composite floor part of assembled |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608308A (en) * | 2020-05-19 | 2020-09-01 | 黄通 | Distributed three-dimensional factory floor and preparation method |
| CN112459329A (en) * | 2020-11-13 | 2021-03-09 | 重庆中科建设（集团）有限公司 | Laminated floor truss and bottom rib arrangement method |
| CN113833189A (en) * | 2021-09-26 | 2021-12-24 | 浙江汉德邦建材有限公司 | Steel bar truss floor support plate without detaching bottom die |
| CN113914526A (en) * | 2021-11-24 | 2022-01-11 | 中建安装集团有限公司 | Prefabricated formwork-free floor and construction method |
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