CN110466037B - Template system of prefabricated three-layer composite beam of reinforced cement base composite material - Google Patents

Template system of prefabricated three-layer composite beam of reinforced cement base composite material Download PDF

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Publication number
CN110466037B
CN110466037B CN201910608550.4A CN201910608550A CN110466037B CN 110466037 B CN110466037 B CN 110466037B CN 201910608550 A CN201910608550 A CN 201910608550A CN 110466037 B CN110466037 B CN 110466037B
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layer
side plate
detachable side
based composite
plate
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CN110466037A (en
Inventor
侯利军
叶子尧
王进
陈达
黄挺
江朝华
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Hohai University HHU
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Hohai University HHU
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/04Producing shaped prefabricated articles from the material by tamping or ramming
    • B28B1/045Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/52Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • B28B7/22Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units

Abstract

The invention discloses a template system of a reinforced cement-based composite material prefabricated three-layer superposed beam, belonging to the field of civil engineering, comprising: prefabricating a fixed length end template, a body template and a lifting device. The body template has three layers which are respectively a first layer: a body part fixing side plate, a bottom fetal membrane and a lifting fixing device; a second layer: the second layer of detachable side plates, the trapezoidal isolation plate and the sliding fixing piece are arranged on the upper surface of the base plate; and a third layer: the detachable curb plate of third layer, elevating gear includes: lifter and riser. The invention provides a prefabricated three-layer superposed beam formwork system which is simple and efficient, convenient to operate and high in construction speed.

Description

Template system of prefabricated three-layer composite beam of reinforced cement base composite material
Technical Field
The invention relates to preparation of a precast concrete beam, in particular to a device and a method for preparing a composite material precast three-layer superposed beam, belonging to the field of civil engineering.
Background
The conventional reinforced concrete beam has a lot of weaknesses in crack control and ductility compared with a reinforced fiber concrete beam, while the reinforced high-performance fiber cement-based composite material beam has a little superiority in all aspects, but is difficult to be used in beam casting in large quantity due to high manufacturing cost. Therefore, by combining the stress mechanism of the reinforced concrete beam, the prefabricated three-layer superposed beam made of different types of materials in different section height ranges is provided, and the effects of high ductility, excellent durability and low manufacturing cost are achieved.
The three-layer superposed beam provided by the patent uses a high-performance fiber cement-based composite material as a main tension layer and common fiber concrete as a main compression layer, the middle layer adopts common concrete, and the three layers are superposed to form an integral beam type member. The three-layer beam reasonably applies the excellent performances of various materials, not only effectively improves the bending resistance and ductility of the section, but also improves the crack control capability and durability of the section, and is suitable for engineering structure application under the erosion environment conditions of oceans, saline soil areas and the like.
However, due to the arrangement of the reinforcement cage in the precast beam, the preparation apparatus and technique for the conventional reinforced concrete beam are no longer applicable to the prefabrication construction of the three-layer composite beam. The conventional construction process is to splice and fix the templates according to the sizes and then directly pour concrete materials into the templates. However, high performance fiber cement-based materials often employ high levels of mineral admixtures, which are generally lower in density than conventional concrete and fiber concrete. When the three-layer composite beam is constructed, if the concrete is poured after the high-performance fiber cement-based composite material is poured, the upper-layer concrete can penetrate into the bottom-layer high-performance material too deeply, and the expected control requirement cannot be met. Meanwhile, if an inverted construction process (namely, a pressure layer, a middle layer and a tension layer) is adopted, the difference between the matrixes of the concrete and the high-performance fiber cement-based composite material is large, the interface bonding between the layers cannot be ensured by conventional continuous pouring, and some measures are required to ensure the reliable bonding between the layers.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method and the device for preparing the simple composite three-layer beam overcome the defects of the prior art, have higher precision, convenient operation and high durability, and can efficiently prepare the customized width and size requirements.
In order to achieve the purpose, the invention adopts the technical scheme that:
a template system of a reinforced cement-based composite material prefabricated three-layer superposed beam comprises a template body and a template base, wherein the template body is provided with a plurality of layers of prefabricated three-layer superposed beams; prefabricating a fixed-length end template, a body part preparation assembly and a lifting device. According to different working conditions, the components can be freely adjusted, and the nuts are spliced, so that the pouring preparation equipment is suitable for beams with different sizes. The body preparation assembly comprises three layers, namely a first layer: a body part fixing side plate, a bottom fetal membrane and a lifting fixing device; a second layer: the second layer of detachable side plates, the trapezoidal isolation plate and the slidable fixing piece; and a third layer: the third layer is a detachable side plate. The lifting device comprises: lifter and riser.
Preferably, the bottom tire membrane is internally provided with transverse and longitudinal steel pipe supports, and vertical steel pipes are arranged at two ends of each longitudinal support and are used as integral device supports.
Preferably, the second layer of detachable side plate and the third layer of detachable side plate are respectively connected and fixed with the next layer of body part fixed side plate through side plate rails and a lifting device, and are supported by steel pipes to facilitate installation and correction.
Preferably, the upper portions of the second-layer detachable side plate and the third-layer detachable side plate are provided with inverted trapezoidal groove rails convenient to install and correct, and one side, close to a pouring material, of the upper portions of the second-layer detachable side plate and the third-layer detachable side plate is provided with a small protruding baffle plate, so that the material is prevented from splashing out during vibration.
Preferably, two hydraulic lifters are arranged in the vertical direction of the lifting device, and base plates are arranged on the lifters to facilitate lifting of the side plates.
Preferably, keels are arranged on the outer sides of the prefabricated fixed-length end formwork and each layer of detachable side plate, and steel pipe supports support the keels so as to check the splicing of the side plates; each layer of keel is provided with a track so as to be convenient for installing the lifting device.
Preferably, the support on the outer side of the top of the second layer of detachable side plate is provided with a long rod rail for the movable use of the slidable fixing piece.
Preferably, the sliding fixing piece is arranged at the gap of the waist reinforcement stirrup and is locked and fixed by adjusting the outer bolt, and the sliding fixing piece is provided with a threaded rod for mounting the trapezoidal isolation plate.
Preferably, mounting holes are formed in two ends of the trapezoidal isolation plate, and the length of each end is reserved by 10cm, so that the trapezoidal isolation plate can be conveniently knocked out after pouring is finished.
Preferably, all the side plates can be spliced and lengthened through bolts to adapt to different sizes.
The invention also provides an implementation method of the template system, which is characterized in that: the method comprises the following steps:
(1) manufacturing a bottom moulding bed according to the length and width of a beam structure required by construction, assembling side plates with required length by splicing and connecting pieces, installing and fixing a prefabricated fixed-length end template and locking a steel pipe support at the end part;
(2) after the adjustment is finished, the second layer of detachable side plate and the third layer of detachable side plate are installed and fixed on the lifting device; after the vertical steel pipe supports are used for supporting and correcting, the horizontal steel pipe supports are installed and fixed;
(3) pouring fiber concrete into the first layer, inserting a vibrating device, and discharging gas in the concrete;
(4) adjusting the lifting device, putting down the second layer of detachable side plates, fixing the long rod rail at a required height, adjusting the sliding fixing pieces at two sides to the middle of the space between each waist tendon and each stirrup, and fixing the trapezoidal isolation plate on the sliding fixing pieces;
(5) pouring common concrete materials into the preparation device to the top end of the second layer of detachable side plate, inserting the vibration device, and exhausting gas in the concrete to fully combine the first layer of fiber concrete and the second layer of concrete;
(6) when the concrete is slightly dry-molded but not molded, loosening the trapezoidal isolation plate, simultaneously tapping the reserved lengths at the two ends, and slowly taking out the trapezoidal isolation plate;
(7) adjusting a lifting device, putting down a third-layer detachable side plate, pouring a third-layer high-performance fiber cement-based composite material, inserting a vibrating device, discharging gas in the high-performance fiber cement-based composite material, completing vibration, manually floating, and treating a component forming and disassembling device.
The invention has the following beneficial effects:
the template system for prefabricating the three-layer superposed beam by using the reinforced cement-based composite material adopts the pouring sequence that a common fiber concrete layer and a common concrete layer are poured firstly, and then a high-performance fiber cement-based composite material layer is poured. Pour like this and not only solved the problem that high performance fiber cement base composite layer pressurized destruction, high performance fiber cement base composite layer and concrete layer junction present gear form interlock moreover, and the connectivity promotes by a wide margin. The size of the whole device can be adjusted and spliced as required, all components can be recycled, the cost is saved, and the device is economical and environment-friendly. The preparation assembly is clear and convenient to operate, the problems of complex pouring and poor precision of the conventional three-layer beam are solved, the construction can be carried out quickly only by setting the size, the efficiency is high, and the construction time can be reduced to a certain extent.
Drawings
FIG. 1 is a schematic view of a body preparation assembly;
FIG. 2 is a schematic view of a vertical lifting device;
FIG. 3 is a schematic view of a trapezoidal partition installation;
fig. 4 is a schematic view of an inverted trapezoidal groove and baffle.
Description of reference numerals:
1. prefabricated fixed length end template, 2, body portion fixed side board, 3, bottom fetal membrane, 4, lift fixing device, 5, the detachable curb plate of second floor, 6, steel pipe support, 7, stock track, 8, elevating gear, 9, the detachable curb plate of third floor, 10, trapezoidal division board, 11, sliding fixing spare, 12, lifter, 801, backing plate, 802, riser.
Detailed Description
Example 1
The present invention is further illustrated by the following specific examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
As shown in fig. 1 to 3, a formwork system for a reinforced concrete-based composite prefabricated three-layer composite beam comprises; prefabricating a fixed-length end template 1, a body part preparation assembly and a lifting device 8. According to different working conditions, the components can be freely adjusted, and the nuts are spliced, so that the pouring preparation equipment is suitable for beams with different sizes. The body preparation assembly comprises three layers: a first layer: a body part fixing side plate 2, a bottom fetal membrane 3 and a lifting fixing device 4; a second layer: a second layer of detachable side plates 5, a trapezoidal isolation plate 10 and a sliding fixing piece 11; and a third layer: the third layer is a detachable side plate 9. The lifting device 8 includes: a lifter bar 12 and a lifter 802.
The bottom bed mould 3 is internally provided with a transverse steel pipe support 6 and a longitudinal steel pipe support 6, and vertical steel pipes are arranged at two ends of each longitudinal steel pipe support and are used as an integral device support.
The second layer of detachable side plate 5 and the third layer of detachable side plate 9 are respectively connected and fixed with the next layer of body part fixed side plate 2 through side plate rails and a lifting device 8, and are assisted by a steel pipe support 6 to facilitate installation and correction.
Every layer of detachable curb plate upper portion all is equipped with the trapezoidal recess track of falling of being convenient for the installation correction, and every layer of curb plate upper portion is close to the one side of pouring the material and is equipped with bellied little baffle, and the material spill when preventing to vibrate.
The prefabricated fixed length end template 1 all is equipped with the fossil fragments with every layer of detachable curb plate outside, and steel pipe supports 6 and withstands the fossil fragments so that check curb plate concatenation. Each level of keel is provided with a track to facilitate installation of the lifting rod 12 and elevator 802.
Be equipped with stock track 7 on the support in the detachable curb plate 5 top outside in second floor to supply sliding fixing 11 to remove, 10 both ends of trapezoidal division board are fixed in sliding fixing 11 through the bolt, and after the completion of vibrating, tap both ends and reserve the position and take out.
Two hydraulic lifters 802 are arranged in the vertical direction of the lifting device 8, and a base plate 801 is arranged on each lifter 802, so that the side plates can be lifted conveniently.
The sliding fixing part 11 is arranged at the gap of the waist reinforcement stirrup and can be locked and fixed by adjusting the outer bolt, and the sliding fixing part 11 is provided with a threaded rod for installing the trapezoidal isolation plate 10.
Mounting holes are formed in two ends of the trapezoidal partition plate 10, the length of 10cm is reserved in the two ends, and the trapezoidal partition plate is convenient to beat and take out after pouring is finished.
All curb plates all can splice the extension through the bolt, adapt to different sizes.
The specific implementation method of the invention is as follows:
(1) according to the length and the width of a beam structure required by construction, a bottom moulding bed 3 is manufactured, side plates with required length are assembled by splicing and connecting pieces, a prefabricated fixed-length end formwork 1 is installed and fixed, and a steel pipe support 6 at the end part is locked.
(2) And after the adjustment is finished, the second layer of detachable side plate 5 and the third layer of detachable side plate 9 are installed and fixed on the lifting device. After the vertical steel pipe support is corrected, the horizontal steel pipe support is installed and fixed.
(3) And pouring fiber concrete into the first layer, inserting a vibrating device, and discharging gas in the concrete.
(4) Adjusting the lifting device, putting down the second layer of detachable side plates 5, fixing the long rod rail 7 at a required height, adjusting the sliding fixing pieces 11 on the two sides to the middle of the distance between each waist rib and each stirrup, and fixing the trapezoidal isolation plate 10 on the sliding fixing pieces 11.
(5) And pouring common concrete materials into the preparation device to the top end of the second layer of detachable side plate 5, inserting the vibrating device, and discharging gas in the concrete, so that the middle of the first layer of fiber concrete and the second layer of concrete is fully combined.
(6) When the concrete is slightly dry but not shaped, the trapezoidal isolation plate 10 is loosened, the reserved lengths at the two ends are tapped simultaneously, and the trapezoidal isolation plate 10 is slowly taken out.
(7) Adjusting a lifting device 8, putting down a third-layer detachable side plate 9, pouring a third-layer high-performance fiber cement-based composite material, inserting a vibrating device, discharging gas in the high-performance fiber cement-based composite material, completing vibration, manually floating, and treating a component forming and detaching device.
To sum up, the problem that the component easily oppresses the deformation during three-layer roof beam is pour has been solved to the template system of the prefabricated three-layer composite beam of reinforced concrete base combined material, convenient operation, and over-and-under type track labour saving and time saving, and the design of trapezoidal division board has not only controlled the reinforced concrete layer thickness, has still increased the area of contact of high performance fiber cement base combined material with the concrete, the wholeness of reinforcing structure, whole device simple operation and high efficiency.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims (9)

1. An implementation method of a template system for prefabricating a three-layer superposed beam by using a reinforced cement-based composite material is characterized in that the template system comprises; prefabricating a fixed-length end template, a body part preparation assembly and a lifting device; the body preparation assembly comprises three layers, namely a first layer: a body part fixing side plate, a bottom fetal membrane and a lifting fixing device; a second layer: the second layer of detachable side plates, the trapezoidal isolation plate and the sliding fixing piece are arranged on the upper surface of the base plate; and a third layer: a third layer of detachable side plate; the lifting device comprises: a lifter bar and a lifter;
the method comprises the following steps:
(1) manufacturing a bottom moulding bed according to the length and width of a beam structure required by construction, assembling side plates with required length by splicing and connecting pieces, installing and fixing a prefabricated fixed-length end template and locking a steel pipe support at the end part;
(2) after the adjustment is finished, the second layer of detachable side plate and the third layer of detachable side plate are installed and fixed on the lifting device; after the vertical steel pipe supports are used for supporting and correcting, the horizontal steel pipe supports are installed and fixed;
(3) pouring fiber concrete into the first layer, inserting a vibrating device, and discharging gas in the concrete;
(4) adjusting the lifting device, putting down the second layer of detachable side plates, fixing the long rod rail at a required height, adjusting the sliding fixing pieces at two sides to the middle of the space between each waist tendon and each stirrup, and fixing the trapezoidal isolation plate on the sliding fixing pieces;
(5) pouring common concrete materials into the preparation device to the top end of the second layer of detachable side plate, inserting the vibration device, and exhausting gas in the concrete to fully combine the first layer of fiber concrete and the second layer of concrete;
(6) when the concrete is slightly dry-molded but not molded, loosening the trapezoidal isolation plate, simultaneously tapping the reserved lengths at the two ends, and slowly taking out the trapezoidal isolation plate;
(7) adjusting a lifting device, putting down a third-layer detachable side plate, pouring a third-layer high-performance fiber cement-based composite material, inserting a vibrating device, discharging gas in the high-performance fiber cement-based composite material, completing vibration, manually floating, and treating a component forming and disassembling device.
2. The method for implementing a formwork system for a reinforced cement-based composite precast three-layer composite beam as claimed in claim 1, wherein the bottom formworks are internally provided with transverse and longitudinal steel pipe supports, and vertical steel pipes are installed at both ends of each longitudinal steel pipe support as an integral device support.
3. The method for implementing the formwork system of a reinforced cement-based composite precast three-layer superposed beam as recited in claim 1, wherein the second-layer detachable side plate and the third-layer detachable side plate are respectively connected and fixed with the next-layer body part fixed side plate through side plate rails and a lifting device.
4. The method for implementing the formwork system of a reinforced cement-based composite precast three-layer superposed beam as claimed in claim 1, wherein the upper parts of the second layer of detachable side plate and the third layer of detachable side plate are provided with inverted trapezoidal groove tracks, and the side of the upper parts of the second layer of detachable side plate and the third layer of detachable side plate close to the casting material is provided with a small raised baffle.
5. The method for implementing a formwork system for a reinforced cement-based composite precast three-layer composite beam as recited in claim 1, wherein the lifting device is provided with two hydraulic lifters in a vertical direction, and the lifters are provided with backing plates.
6. The method for implementing the formwork system of the reinforced cement-based composite precast three-layer superposed beam as claimed in claim 1, wherein keels are arranged on the prefabricated fixed-length end formwork and the outer side of each layer of detachable side plate, and steel pipe supports are supported against the keels so as to check the splicing of the side plates; and a track is reserved on each layer of keel.
7. A method of constructing a formwork system for a precast three-layer composite beam made of reinforced cement based composite material according to claim 1, wherein the second layer of detachable side plate is provided with long rod rails on the supports on the outside of the top.
8. The method for implementing the formwork system of a reinforced cement-based composite precast three-layer composite beam as claimed in claim 1, wherein the sliding fixing members are arranged at the gaps of the waist-reinforcement stirrups and locked and fixed by adjusting the outer side bolts, and the sliding fixing members are provided with threaded rods for installing the trapezoidal isolation plates.
9. The implementation method of the formwork system for the reinforced cement-based composite precast three-layer superposed beam as recited in claim 8, wherein mounting holes are formed at two ends of the trapezoidal partition plate, and the length of the trapezoidal partition plate is reserved at the two ends by 10 cm.
CN201910608550.4A 2019-07-08 2019-07-08 Template system of prefabricated three-layer composite beam of reinforced cement base composite material Active CN110466037B (en)

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CN111021387A (en) * 2019-12-06 2020-04-17 中铁城建集团有限公司 Method for quickly constructing foundation moulding bed
CN113152784B (en) * 2021-04-08 2024-03-26 扬州大学 Laminated beam and preparation method thereof

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CH94812A (en) * 1921-03-10 1922-05-16 Horchler Karl Formwork element for concrete work.
DE815098C (en) * 1948-10-02 1951-10-31 Josef Reinartz Rack thread for scaffolding of sliding formwork, building platforms or the like.
CN2179892Y (en) * 1993-05-28 1994-10-19 内蒙古第三建筑工程公司 Top-raising sliding form for concrete pouring
JPH0893218A (en) * 1994-09-29 1996-04-09 Sumitomo Metal Ind Ltd Construction of individual footing and folding form for individual footing
CN202318550U (en) * 2011-11-21 2012-07-11 华汇工程设计集团股份有限公司 End part template of prefabricated beam
CN203031763U (en) * 2012-12-29 2013-07-03 中建六局土木工程有限公司 Overlapped prefabricated part construction structure
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