CN212641878U - Prestressed concrete superimposed sheet bottom plate - Google Patents
Prestressed concrete superimposed sheet bottom plate Download PDFInfo
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- CN212641878U CN212641878U CN202021318149.1U CN202021318149U CN212641878U CN 212641878 U CN212641878 U CN 212641878U CN 202021318149 U CN202021318149 U CN 202021318149U CN 212641878 U CN212641878 U CN 212641878U
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Abstract
A prestressed concrete laminated slab bottom plate belongs to the technical field of civil engineering and comprises concrete, truss reinforcing steel bars, longitudinal reinforcing steel bars and transverse reinforcing steel bars, wherein hooks in the horizontal direction are arranged at the end parts of the transverse reinforcing steel bars; the longitudinal pretension stress is applied to both the truss steel bars and the longitudinal steel bars, and the truss steel bars and the longitudinal steel bars can be arranged in a mixed mode or only the truss steel bars or the longitudinal steel bars can be arranged. The utility model adopts the steel bar truss and the prestressed concrete to improve the rigidity and the anti-cracking performance of the bottom plate of the concrete composite slab, wherein, the truss steel bar is not only used for improving the rigidity and the anti-cracking performance of the bottom plate of the concrete composite slab, but also used as a stress steel bar in normal use; horizontal reinforcing bar tip adopts horizontal crotch, not only can reduce the overlap joint length of horizontal reinforcing bar, reduces the width of the section of watering behind the concrete, and more importantly makes the horizontal reinforcing bar have the prestressed concrete superimposed sheet bottom plate of tip crotch can adopt long-line pedestal drawing die method production, can show improvement production efficiency, reduction in production cost.
Description
Technical Field
The utility model belongs to the technical field of civil engineering, relate to the assembled building, especially relate to prestressed concrete superimposed sheet bottom plate.
Background
The bottom plate of the concrete composite slab for the prefabricated concrete structure building has the scheme that the end part of the transverse steel bar at the bottom is not hooked or is provided with a hook in the vertical direction. For the scheme without hooks, the lap joint length of the steel bars should be lengthened according to the requirement of the concrete structure design specification, so that the post-cast concrete section is widened when the plates are connected, which is obviously an unreasonable scheme; for the scheme with the hooks in the vertical direction, the preparation of the bottom plate of the concrete laminated slab cannot be implemented and produced by adopting a high-efficiency drawing die production process due to the blocking of the hooks.
The invention discloses a prestressed concrete laminated slab with steel trusses and a manufacturing method thereof, and belongs to the technical field of building engineering. However, the longitudinal steel bars and the steel plates of the steel truss are not prestressed, and are not fully utilized as stressed steel bars in the normal use stage, and are only used for increasing the rigidity of the bottom plate in the hoisting and construction stages, so that the waste of steel material resources is caused, and the construction cost is increased.
The invention discloses a prestressed concrete truss laminated slab and a manufacturing method thereof, and the prestressed concrete truss laminated slab comprises a concrete bottom plate, a truss is arranged on the concrete bottom plate, the truss comprises an upper chord, a first web member and a second web member are respectively arranged on two sides of the upper chord, the first web member and the second web member are continuously bent reinforcing steel bars, the bent parts of the tops of the first web member and the second web member are connected with the outer wall of the upper chord, when a hoisting device grabs the upper chord for hoisting, the web members, transverse auxiliary reinforcing steel bars and prestressed longitudinal steel bars in the concrete bottom plate are all stressed, the situation that the web members are stressed independently and fall off from the concrete bottom plate can be avoided, and the like. However, the invention does not apply prestress to the truss, and the prestressed steel bar is not fully utilized as a stressed steel bar in the normal use stage, and is only used for increasing the rigidity of the bottom plate in the hoisting and construction stages, thereby causing the waste of steel material resources and increasing the construction cost.
The utility model discloses a patent grant specification CN200720107298.1 discloses a steel bar truss prestressed concrete superimposed sheet, has prefabricated layer and the superimposed layer on and arranges in the steel bar truss that comprises lower chord muscle, last chord muscle and web member in prefabricated layer, the superimposed layer, lower chord muscle is located prefabricated layer lower part, and the last chord muscle is located the superimposed layer, and prefabricated layer lower part is equipped with the other direction reinforcing bar with lower chord muscle staggered distribution, is equipped with in the superimposed layer and attaches the muscle and form network structure at the coplanar with last chord muscle staggered arrangement, prefabricated layer lower part is equipped with the prestressing steel parallel with lower chord muscle, prestressing steel bar and other direction reinforcing bar form network structure at the coplanar. However, the utility model discloses a prestressing force is not applyed to steel bar truss, does not regard as the atress reinforcing bar in addition in the normal use stage and makes full use of, only is used for the rigidity that handling and construction stage increase the bottom plate, has caused the waste of reinforcing bar material resource, increases construction cost.
The invention discloses a method for preparing a bottom plate of a concrete laminated slab by adopting a long-line pedestal, belonging to the technical field of constructional engineering. According to the invention, the long-line pedestal is cast with concrete in a drawing die manner for production, so that the casting quality and efficiency of the concrete can be obviously improved; the truss steel bars are placed later, so that the problem that the prior placement hinders the travelling of the drawing die is avoided, and the drawing die pouring of concrete of the bottom plate of the concrete laminated plate can be realized; the concrete of the bottom plate of the concrete laminated slab generates pre-stress, the anti-cracking performance of the bottom plate of the concrete laminated slab can be obviously improved, the production efficiency is high, the product quality is good, and the production cost can be greatly reduced. However, the truss steel bars which are arranged in the rear of the steel bar truss structure are not prestressed, and are not used as stressed steel bars in the normal use stage, and are only used for increasing the rigidity of the bottom plate in the lifting and construction stage, so that the waste of steel bar material resources is caused.
The invention discloses a method for applying a device for producing a bottom plate of a concrete laminated slab with adjustable size and deformation, which belongs to the technical field of constructional engineering, and adopts a slip form mode to prepare the bottom plate of the concrete laminated slab, so that the quality and the efficiency of the preparation of the bottom plate of the concrete laminated slab can be obviously improved; the adjustable partition plates are adopted to prepare the bottom plate of the concrete laminated slab according to the required size, so that the equipment is universal, the aim of flexible production is fulfilled, and the preparation of the bottom plate of the concrete laminated slab is more flexible and convenient; the deformation of the production device can be adjusted at any time by adopting the vertical deformation adjusting mechanism and the horizontal deformation adjusting mechanism so as to ensure that the size and the precision of a product meet the engineering requirements; the invention has high production efficiency and good product quality, and can greatly reduce the production cost. However, the invention cannot be produced under the condition of truss reinforcing steel bars, cannot apply prestress to the truss reinforcing steel bars, and cannot fully exert the function of the truss reinforcing steel bars.
The invention patent application specification CN202010191294.6 discloses a prestressed plane truss reinforced concrete laminated slab bottom plate and a preparation method thereof, wherein the bottom plate comprises bottom plate concrete, plane truss reinforcing steel bars, longitudinal reinforcing steel bars and transverse reinforcing steel bars, and the preparation method comprises the steps of preparing a long line pedestal, preparing a drawing die equipment assembly, paving and tensioning the reinforcing steel bars, installing drawing die equipment, pouring concrete and cutting and demolding. The prestressed plane truss reinforced concrete composite slab bottom plate prepared by the method has the advantages of high rigidity, good quality, high efficiency and low cost, the problem that the concrete composite slab bottom plate is easy to crack in the processes of lifting, constructing and installing under the common condition can be effectively avoided, the longitudinal steel bars of the steel bar truss can be fully utilized in each stage of production, lifting, constructing, installing and using, and the waste of steel bar materials of the truss is avoided. However, the end parts of the transverse steel bars of the bottom plate of the concrete composite slab are not provided with hooks, so that the width of a post-cast section and the lap joint length of the steel bars can be increased, and the concrete composite slab is not reasonable and can cause waste.
Aiming at the problems existing in the preparation process of the bottom plate of the concrete composite slab at present, a new technical scheme is necessary to be provided.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the invention is as follows: the prestressed concrete laminated slab bottom plate can effectively avoid the problem that the concrete laminated slab bottom plate is easy to crack in the processes of lifting, construction and installation under ordinary conditions, longitudinal steel bars of a steel bar truss can be fully utilized in each stage of production, lifting, construction and installation and use, and waste of steel bar materials of the truss is avoided; meanwhile, the transverse steel bar hooks are horizontally arranged, so that the concrete laminated slab produced by a drawing die method cannot be hindered by the hooks at the end parts of the steel bars, and the high-quality, high-efficiency and low-cost preparation of the bottom plate of the concrete laminated slab is realized.
The utility model provides a prestressed concrete superimposed sheet bottom plate which characterized by: the prestressed concrete composite slab comprises concrete, truss reinforcing steel bars, longitudinal reinforcing steel bars and transverse reinforcing steel bars, wherein the transverse reinforcing steel bars are arranged in the concrete and transversely arranged along a bottom plate of the prestressed concrete composite slab, and hooks in the horizontal direction are arranged at the end parts of the transverse reinforcing steel bars; the truss steel bars are formed by welding upper chord steel bars, lower chord steel bars and web member steel bars, and the bottoms of the lower chord steel bars are vertically and orthogonally arranged on the upper parts of the transverse steel bars and are tightly attached to the transverse steel bars; the longitudinal steel bars and the truss steel bars are alternately arranged in parallel, and the bottoms of the longitudinal steel bars are vertically and orthogonally arranged on the upper parts of the transverse steel bars and tightly attached to the transverse steel bars.
A hook in the horizontal direction is arranged at the end part of one side of the transverse steel bar; or the end parts at both sides are provided with hooks in the horizontal direction.
The truss steel bars are planar truss steel bars with the upper chord steel bars, the lower chord steel bars and the web members in the same plane, or spatial truss steel bars with the upper chord steel bars, the lower chord steel bars and the web members in different planes.
Longitudinal pre-tensioning stress is applied to the truss reinforcing steel bars and the longitudinal reinforcing steel bars, and the truss reinforcing steel bars and the longitudinal reinforcing steel bars are arranged in a mixed mode, or only the truss reinforcing steel bars are arranged, or only the longitudinal reinforcing steel bars are arranged.
Through the above design scheme, the utility model discloses following beneficial effect can be brought: a prestressed concrete laminated slab bottom plate adopts a steel bar truss and prestressed concrete to improve the rigidity and the anti-cracking performance of the concrete laminated slab bottom plate, wherein the truss steel bar is not only used for improving the rigidity and the anti-cracking performance of the concrete laminated slab bottom plate, but also used as a stressed steel bar during normal use; horizontal reinforcing bar tip adopts horizontal crotch, not only can reduce the overlap joint length of horizontal reinforcing bar, reduces the width of the section of watering behind the concrete, and more importantly makes the horizontal reinforcing bar have the prestressed concrete superimposed sheet bottom plate of tip crotch can adopt long-line pedestal drawing die method production, can show improvement production efficiency, reduction in production cost.
Drawings
The invention is further described with reference to the following drawings and detailed description:
fig. 1 is the plane schematic diagram of the bottom plate of the prestressed concrete composite slab of the present invention.
Fig. 2 is the side schematic view of the bottom plate of the prestressed concrete composite slab of the present invention.
Fig. 3 is the utility model discloses prestressed concrete superimposed sheet bottom plate terminal surface schematic diagram.
Fig. 4 is the utility model discloses prestressed concrete superimposed sheet bottom plate longitudinal reinforcement position profile schematic diagram.
Fig. 5 is the utility model discloses prestressed concrete coincide board bottom plate truss reinforcing bar position profile schematic diagram.
Fig. 6 is the transverse section schematic diagram of the bottom plate of the prestressed concrete composite slab of the present invention.
In the figure, 1-concrete, 2-truss steel bars, 3-longitudinal steel bars and 4-transverse steel bars.
Detailed Description
A prestressed concrete laminated slab bottom plate is shown in figures 1-6 and comprises concrete 1, truss reinforcing steel bars 2, longitudinal reinforcing steel bars 3 and transverse reinforcing steel bars 4, wherein the transverse reinforcing steel bars 4 are arranged in the concrete 1 and are transversely arranged along the prestressed concrete laminated slab bottom plate, and hooks in the horizontal direction are arranged at the end parts of the transverse reinforcing steel bars 4; the truss steel bars 2 are formed by welding upper chord steel bars, lower chord steel bars and web member steel bars, and the bottoms of the lower chord steel bars are vertically and orthogonally arranged on the upper parts of the transverse steel bars 4 and are tightly attached to the transverse steel bars 4; the longitudinal steel bars 3 and the truss steel bars 2 are alternately arranged in parallel, and the bottoms of the longitudinal steel bars 3 are vertically and orthogonally arranged on the upper portions of the transverse steel bars 4 and tightly attached to the transverse steel bars 4.
A hook in the horizontal direction is arranged at the end part of one side of the transverse steel bar 4; or the end parts at both sides are provided with hooks in the horizontal direction.
The truss steel bars 2 are planar truss steel bars with upper chord steel bars, lower chord steel bars and web members in the same plane, or spatial truss steel bars with upper chord steel bars, lower chord steel bars and web members in different planes.
Longitudinal pretension stress is applied to the truss steel bars 2 and the longitudinal steel bars 3, the truss steel bars 2 and the longitudinal steel bars 3 are arranged in a mixed mode, or only the truss steel bars 2 are arranged, or only the longitudinal steel bars 3 are arranged.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a prestressed concrete superimposed sheet bottom plate which characterized by: the prestressed concrete composite slab comprises concrete (1), truss reinforcing steel bars (2), longitudinal reinforcing steel bars (3) and transverse reinforcing steel bars (4), wherein the transverse reinforcing steel bars (4) are arranged in the concrete (1) and are transversely arranged along a bottom plate of the prestressed concrete composite slab, and hooks in the horizontal direction are arranged at the end parts of the transverse reinforcing steel bars (4); the truss steel bars (2) are formed by welding upper chord steel bars, lower chord steel bars and web member steel bars, and the bottoms of the lower chord steel bars are vertically and orthogonally arranged on the upper parts of the transverse steel bars (4) and tightly attached to the transverse steel bars (4); the longitudinal steel bars (3) and the truss steel bars (2) are arranged in parallel and alternately, and the bottoms of the longitudinal steel bars (3) are vertically and orthogonally arranged on the upper parts of the transverse steel bars (4) and tightly attached to the transverse steel bars (4).
2. The prestressed concrete laminated slab floor according to claim 1, wherein: a hook in the horizontal direction is arranged at the end part of one side of the transverse steel bar (4); or the end parts at both sides are provided with hooks in the horizontal direction.
3. The prestressed concrete laminated slab floor according to claim 1, wherein: the truss steel bars (2) are planar truss steel bars with upper chord steel bars, lower chord steel bars and web members in the same plane, or spatial truss steel bars with upper chord steel bars, lower chord steel bars and web members in different planes.
4. The prestressed concrete laminated slab floor according to claim 1, wherein: longitudinal pretension stress is applied to the truss steel bars (2) and the longitudinal steel bars (3), and the truss steel bars (2) and the longitudinal steel bars (3) are arranged in a mixed mode, or only the truss steel bars (2) are arranged, or only the longitudinal steel bars (3) are arranged.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020429678 | 2020-03-30 | ||
| CN2020204296782 | 2020-03-30 |
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| Publication Number | Publication Date |
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| CN212641878U true CN212641878U (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021318149.1U Active CN212641878U (en) | 2020-03-30 | 2020-07-08 | Prestressed concrete superimposed sheet bottom plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288347A (en) * | 2022-08-24 | 2022-11-04 | 金鹏装配式建筑有限公司 | Steel pipe truss prestressed concrete superimposed sheet |
| CN116044073A (en) * | 2023-03-30 | 2023-05-02 | 秦皇岛和信基业建筑科技有限公司 | Prestressed concrete composite floor slab and preparation process thereof |
-
2020
- 2020-07-08 CN CN202021318149.1U patent/CN212641878U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288347A (en) * | 2022-08-24 | 2022-11-04 | 金鹏装配式建筑有限公司 | Steel pipe truss prestressed concrete superimposed sheet |
| CN116044073A (en) * | 2023-03-30 | 2023-05-02 | 秦皇岛和信基业建筑科技有限公司 | Prestressed concrete composite floor slab and preparation process thereof |
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