CN213390768U - Bottom plate for assembling type concrete prestress overlapping - Google Patents
Bottom plate for assembling type concrete prestress overlapping Download PDFInfo
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- CN213390768U CN213390768U CN202021700081.3U CN202021700081U CN213390768U CN 213390768 U CN213390768 U CN 213390768U CN 202021700081 U CN202021700081 U CN 202021700081U CN 213390768 U CN213390768 U CN 213390768U
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Abstract
The utility model discloses an assembly type bottom plate for concrete prestress superposition, which comprises a concrete bottom plate and a truss, wherein longitudinal steel bars parallel to the length direction of the concrete bottom plate are further arranged in the concrete bottom plate, the truss comprises an upper chord parallel to the length direction of the concrete bottom plate and a plurality of groups of first web members and second web members which are respectively arranged at two opposite sides of the upper chord, the first web members and the second web members are arranged into an inverted V-shaped structure, two lower ends of the inverted V-shaped structure are arranged into a hooked structure, U-shaped steel bars or N-shaped steel bars are arranged in the bottom plate, parallel steel bars of the U-shaped steel bars or the N-shaped steel bars are arranged perpendicular to the length direction of the bottom plate, and the end parts at two ends of the upper chord are provided with connecting flanges; the method has the advantages of improving the construction efficiency, reducing the cost and the like.
Description
(I) technical field
The utility model relates to a bottom plate for the building especially relates to an assembled concrete is bottom plate for prestressing force coincide.
(II) background of the invention
In recent years, the concrete truss composite slab is more and more widely applied to the building industry, because the composite slab can reduce the quantity of construction templates and scaffolds in the construction process, the construction efficiency is improved, and the construction cost is further reduced. The existing concrete truss laminated slab mainly comprises a bottom plate and a truss, the truss comprises an upper chord member, a web member and a lower chord member, the web member is a continuous bending reinforcing steel bar, the top bending part of the web member is connected with the outer wall of the upper chord member, the bottom bending part of the web member is embedded in the bottom plate, a transverse reinforcing steel bar embedded in the bottom plate penetrates through the upper side of an included angle of the bottom bending part of the web member, and a plurality of longitudinal reinforcing steel bars are embedded in the bottom plate. When the concrete truss composite slab prepared by the technology is used for grabbing the upper chord member by the hoisting equipment for hoisting, the bottom of the web member is bent and stressed on the transverse steel bar, so that the web member cannot be separated from the concrete bottom plate.
(III) contents of utility model
Not enough to prior art, the utility model provides an assembly type concrete prestressing force is folded and is used bottom plate improves the efficiency of construction, advantages such as reduce cost.
The technical scheme of the utility model is that:
the utility model provides an assembled bottom plate for concrete prestressing force coincide, includes concrete bottom plate and the truss of setting on concrete bottom plate, still be provided with in the concrete bottom plate with the parallel longitudinal reinforcement of concrete bottom plate length direction, the truss include with the parallel last chord member of concrete bottom plate length direction with the multiunit sets up first web member and the second web member in the relative both sides of last chord member respectively, first web member with the top of second web member with last chord member passes through welded fastening and connects, a set of first web member of relative position and second web member constitute the web member unit, first web member with the bottom of second web member is pre-buried in concrete bottom plate respectively, its characterized in that: the thickness of the concrete bottom plate is 3-5CM, the longitudinal steel bar is a prestressed steel bar, the first web member and the second web member are arranged to be in an inverted V-shaped structure, two lower ends of the inverted V-shaped structure are arranged to be hook structures, the hook structures of the first web member and the hook structures of the second web member are arranged in a manner of being perpendicular to the longitudinal direction in opposite directions, and the longitudinal steel bar penetrates through the hook structures and is fixed; the bottom plate is internally provided with a U-shaped steel bar or an N-shaped steel bar, parallel bars of the U-shaped steel bar or the N-shaped steel bar are perpendicular to the length direction of the bottom plate, and the end parts of the two ends of the upper chord are provided with connecting flanges. In this way, the inverted V-shaped structure with the hook is arranged and is perpendicular to the longitudinal direction, so that the manufacture of the bottom plate for the prefabricated concrete prestress superposition is facilitated, binding or welding connection is not needed between the web member and the longitudinal steel bar during the manufacture, the longitudinal steel bar is directly clamped into the structure with the hook, and the position of the longitudinal steel bar in the bottom plate is more accurate; the transverse steel bars in the bottom plate are arranged into U-shaped steel bars or N-shaped steel bars, so that the transverse steel bars are convenient to arrange; the U-shaped reinforcing steel bars or the N-shaped reinforcing steel bars penetrate through the inverted V-shaped structures of the first web members and the second web members and are distributed at the upper parts of the longitudinal reinforcing steel bars; therefore, the upper chord member, the web members, the longitudinal steel bars of the bottom plate and the bottom plate are more favorably and organically connected into a whole, the strength of the U-shaped steel bar or the N-shaped steel bar is enhanced, and the U-shaped steel bar or the N-shaped steel bar is a hanging part, so that the phenomena of cracking, plate falling and the like of the part during hanging are prevented; the both ends tip of upper chord member is provided with flange, makes the bottom plate more convenient when length direction connects, and two bottom plates can be better, connect as an organic whole sooner when butt joint on same roof beam or post, and the structure is safer.
The bottom plate for the assembly type concrete prestress superposition has no tensile stress under the action of vertical load, and the stability is enhanced.
Preferably, the upper chord is a steel pipe.
Further, a filling material is poured into the inner cavity of the steel pipe, and the filling material is expanded concrete or expanded mortar. Therefore, the filling material expands in the solidification process, so that the steel pipe is stressed to generate prestress, and the capability of resisting vertical load of the steel pipe is improved.
Furthermore, at least one prestressed reinforcement is pre-embedded in the inner cavity of the steel pipe.
Preferably, the concrete bottom plate comprises lightweight aggregate, and the lightweight aggregate comprises perlite or ceramsite.
Preferably, an anti-cracking net is arranged in the concrete bottom plate.
Preferably, the side edges of the two longitudinal ends of the concrete bottom plate are provided with an upper chamfer and a lower chamfer. Therefore, when concrete is poured, the concrete quickly flows into the bottom plate for concrete prestress superposition, a wedge is formed at the chamfer, the connection between the adjacent bottom plates is strengthened, the formation of cracks is reduced, and the combination of the bottom plate for concrete prestress superposition and the concrete is firmer.
Preferably, the transverse reinforcing steel bars are tilted upwards relative to the bottom plate.
(IV) description of the drawings
FIG. 1, FIG. 2 and FIG. 3 are a cross-sectional view, a longitudinal top view and a longitudinal sectional view of the first embodiment;
FIG. 4, FIG. 5 and FIG. 6 are a cross-sectional view, a longitudinal plan view and a longitudinal sectional view of the second embodiment;
fig. 7 is a schematic view of a web member with a hook structure in an embodiment.
Wherein, 1 is the concrete bottom plate, 2 is the truss, 3 is longitudinal reinforcement, 4 are the upper chord member, 5 are first web members, 6 are the second web members, 7 are the structure of taking the hook, 8 are the U-shaped reinforcing bar, 9 are N-shaped reinforcing bar, 13 are the flange.
In the attached drawings, the U-shaped reinforcing steel bars 8 and the N-shaped reinforcing steel bars 9 are schematic diagrams of the arrangement direction and the arrangement position in the concrete bottom plate.
(V) detailed description of the preferred embodiments
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1, 2 and 3, an assembled concrete prestress superposition bottom plate comprises a concrete bottom plate 1 and a truss 2 arranged on the concrete bottom plate 1, wherein a longitudinal prestressed tendon parallel to the length direction of the concrete bottom plate 1 is further arranged in the concrete bottom plate 1, the truss 2 comprises an upper chord 4 parallel to the length direction of the concrete bottom plate 1, and a plurality of groups of first web members 5 and second web members 6 respectively arranged at two opposite sides of the upper chord 4, the top ends of the first web members 5 and the second web members 6 are fixedly connected with the upper chord 4 by welding, the bottom ends of the first web members 5 and the second web members 6 are respectively embedded in the concrete bottom plate 1, the first web members 5 and the second web members 6 are arranged in an inverted V-shaped structure, two lower ends of the inverted V-shaped structure are arranged in a hooked structure 7, the hooked structures arranged on the first web members and the second web members are oppositely arranged perpendicular to the longitudinal direction, the longitudinal steel bar penetrates through the hooked structure and is fixed; the bottom plate is internally provided with a U-shaped steel bar 8, the parallel ribs of the U-shaped steel bar 8 are arranged in a direction perpendicular to the length direction of the bottom plate, and the end parts of the two ends of the upper chord are provided with connecting flanges 13. Fig. 2 shows the position of the U-shaped reinforcement 8 in the concrete floor.
Example two:
fig. 4, 5 and 6 are schematic diagrams of the second embodiment. The difference between the second embodiment and the first embodiment is that, in the second embodiment,
the bottom plate is internally provided with an N-shaped steel bar 9, and the parallel bars of the N-shaped steel bar 9 are arranged in a direction perpendicular to the length direction of the bottom plate and pass through the inverted V-shaped structures of the first web member and the second web member. And a transverse steel bar extends out of the chamfered edge in the concrete bottom plate 1, and the transverse steel bar is tilted upwards relative to the bottom plate. Fig. 5 shows the position of the N-shaped reinforcement 9 in the concrete floor.
Fig. 7 is a schematic view of a web member with a hook structure in an embodiment.
The foregoing is illustrative of particular embodiments of the present invention and reference should be made to the implementation of apparatus and structures not specifically described herein which are illustrated and described in detail as commonly practiced in the art.
Simultaneously the utility model discloses above-mentioned embodiment only is for the explanation the utility model discloses technical scheme uses, only does the utility model discloses technical scheme's enumeration is not used for the restriction the utility model discloses a technical scheme and protection scope. The modifications of the technical solutions disclosed in the claims and the specification by the equivalent technical means and the equivalent devices should not be considered to be beyond the scope of the claims and the specification of the present invention.
Claims (9)
1. The utility model provides an assembled bottom plate for concrete prestressing force coincide, includes concrete bottom plate and the truss of setting on concrete bottom plate, still be provided with in the concrete bottom plate with the parallel longitudinal reinforcement of concrete bottom plate length direction, the truss include with the parallel last chord member of concrete bottom plate length direction with the multiunit sets up first web member and the second web member in the relative both sides of last chord member respectively, first web member with the top of second web member with last chord member passes through welded fastening and connects, a set of first web member of relative position and second web member constitute the web member unit, first web member with the bottom of second web member is pre-buried in concrete bottom plate respectively, its characterized in that: the thickness of the concrete bottom plate is 3-5CM, the longitudinal steel bar is a prestressed steel bar, the first web member and the second web member are arranged to be in an inverted V-shaped structure, two lower ends of the inverted V-shaped structure are arranged to be hook structures, the hook structures of the first web member and the hook structures of the second web member are arranged in a manner of being perpendicular to the longitudinal direction in opposite directions, and the longitudinal steel bar penetrates through the hook structures and is fixed; the bottom plate is internally provided with a U-shaped steel bar or an N-shaped steel bar, parallel bars of the U-shaped steel bar or the N-shaped steel bar are perpendicular to the length direction of the bottom plate, and the end parts of the two ends of the upper chord are provided with connecting flanges.
2. The fabricated bottom plate for concrete prestressed superposition as recited in claim 1, wherein said upper chord member is a steel tube.
3. The assembly type bottom plate for concrete prestress superposition as recited in claim 2, wherein a filler is poured into the inner cavity of the steel tube, and the filler is expansive concrete or expansive mortar.
4. The assembly type bottom plate for concrete prestress superposition as recited in claim 2, wherein at least one prestress steel bar is pre-embedded in the inner cavity of the steel tube.
5. The fabricated bottom plate for concrete prestressed superposition as claimed in any one of claims 1-4, characterized in that said concrete bottom plate comprises lightweight aggregate, said lightweight aggregate comprising perlite or ceramsite.
6. The assembly type bottom plate for concrete prestress superposition as claimed in any one of claims 1 to 4, wherein an anti-cracking net is arranged in the concrete bottom plate.
7. The bottom plate for assembling concrete prestress superposition according to any one of claims 1-4, wherein the upper side edges of the two longitudinal ends of the concrete bottom plate are provided with chamfers.
8. The fabricated bottom plate for concrete prestressed superposition as recited in claim 7, characterized by that in the interior of said concrete bottom plate a transverse reinforcing bar is projected from the chamfered edge.
9. The fabricated bottom plate for concrete prestressed superposition as recited in claim 8, wherein said transverse reinforcing bars are turned upward with respect to said bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021700081.3U CN213390768U (en) | 2020-08-15 | 2020-08-15 | Bottom plate for assembling type concrete prestress overlapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021700081.3U CN213390768U (en) | 2020-08-15 | 2020-08-15 | Bottom plate for assembling type concrete prestress overlapping |
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| Publication Number | Publication Date |
|---|---|
| CN213390768U true CN213390768U (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021700081.3U Active CN213390768U (en) | 2020-08-15 | 2020-08-15 | Bottom plate for assembling type concrete prestress overlapping |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089920A (en) * | 2021-06-10 | 2021-07-09 | 湖南华廷筑邦住宅工业有限公司 | Steel pipe truss prestressed concrete superimposed sheet |
-
2020
- 2020-08-15 CN CN202021700081.3U patent/CN213390768U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089920A (en) * | 2021-06-10 | 2021-07-09 | 湖南华廷筑邦住宅工业有限公司 | Steel pipe truss prestressed concrete superimposed sheet |
| CN113089920B (en) * | 2021-06-10 | 2022-02-18 | 湖南华廷筑邦住宅工业有限公司 | Steel pipe truss prestressed concrete superimposed sheet |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230803 Address after: No. 600, Xiaoxiang South Road, Yanghu Street, Yuelu District, Changsha City, Hunan Province 410208 Patentee after: Hunan Hua Tingzhu state residential Industrial Co.,Ltd. Address before: No.8 Lujing Road, Lugu high tech Zone, Changsha City, Hunan Province, 410205 Patentee before: CHANGSHA JUXING LIGHT WEIGHT BUILDING MATERIALS Co.,Ltd. |
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| TR01 | Transfer of patent right |