CN114075853A - Bottom plate for concrete prestress superposition - Google Patents
Bottom plate for concrete prestress superposition Download PDFInfo
- Publication number
- CN114075853A CN114075853A CN202010821822.1A CN202010821822A CN114075853A CN 114075853 A CN114075853 A CN 114075853A CN 202010821822 A CN202010821822 A CN 202010821822A CN 114075853 A CN114075853 A CN 114075853A
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- concrete
- web member
- prestressed
- longitudinal
- 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.)
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- 239000004567 concrete Substances 0.000 title claims abstract description 73
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 230000002787 reinforcement Effects 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 4
- 238000005336 cracking Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 3
- 235000019362 perlite Nutrition 0.000 claims description 3
- 239000010451 perlite Substances 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 239000011513 prestressed concrete Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 8
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 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
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
Abstract
The invention discloses a 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 also 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 top ends of the first web members and the second web members are fixedly connected with the upper chord by welding, and the bottom ends of the first web members and the second web members are respectively embedded in the concrete bottom plate, and the bottom plate is characterized in that: the first web member and the second web member are arranged into an inverted V-shaped structure, two lower ends of the inverted V-shaped structure are arranged into hook structures, the hook structures of the first web member and the hook structures of the second web member are arranged oppositely and perpendicular to the longitudinal direction, and the longitudinal steel bars penetrate through the hook structures and are fixed; u-shaped steel bars or N-shaped steel bars are arranged in the concrete bottom plate, parallel bars of the U-shaped steel bars or the N-shaped steel bars are perpendicular to the length direction of the concrete bottom plate, penetrate through the inverted V-shaped structures of the first web members and the second web members, and are distributed on the upper parts of the longitudinal steel bars; the method has the advantages of improving the construction efficiency, reducing the cost and the like.
Description
(I) technical field
The invention relates to a bottom plate for a building, in particular to a bottom plate for concrete prestress superposition.
(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.
Disclosure of the invention
Aiming at the defects of the prior art, the invention provides the bottom plate for concrete prestress superposition, which has the advantages of improving the construction efficiency, reducing the cost and the like.
The technical scheme of the invention is as follows:
the utility model provides a 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, first web member with the bottom of second web member is pre-buried in concrete bottom plate respectively, its characterized in that: the first web member and the second web member are arranged into an inverted V-shaped structure, two lower ends of the inverted V-shaped structure are arranged into hook structures, the hook structures of the first web member and the hook structures of the second web member are arranged oppositely and perpendicular to the longitudinal direction, and the longitudinal steel bars penetrate through the hook structures and are fixed; be provided with U-shaped reinforcing bar or N-shaped reinforcing bar in the concrete bottom plate, the parallel muscle perpendicular to concrete bottom plate length direction setting of U-shaped reinforcing bar or N-shaped reinforcing bar to follow first web member with pass in the Λ shape structure of second web member, and lay the upper portion at vertical reinforcing bar. In this way, the inverted V-shaped structure with the hook is arranged and is perpendicular to the longitudinal direction, so that the bottom plate for concrete prestress superposition is convenient to manufacture; 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.
Preferably, one first web member and one second web member of said relative positions constitute a web member unit.
Preferably, the longitudinal steel bar is a prestressed reinforcement. Therefore, the bottom plate for concrete prestress lamination does not have tensile stress under the action of vertical load, and the stability is enhanced.
Preferably, the upper chord is a steel pipe.
Furthermore, the two ends of the steel pipe are provided with plugging pieces. Therefore, the arranged plugging piece can seal the filler filled in the 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.
(IV) description of the drawings
FIG. 1 and FIG. 2 are a cross-sectional view and a longitudinal top view of the first embodiment;
FIG. 3 is a longitudinal sectional view of the second embodiment;
FIG. 4 and FIG. 5 are a cross-sectional view and a longitudinal top view of a third embodiment;
FIG. 6 is a longitudinal sectional view of the fourth 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 is the upper chord member, 5 is first web member, 6 is the second web member, 7 is the structure of taking the hook, 8 is the U-shaped reinforcing bar, 9 is the N-shaped reinforcing bar, 11 is the stopping, 12 is the prestressing steel bar.
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 and 2, a 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 steel bar 3 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, the two lower ends of the inverted V-shaped structure are arranged in a hook structure 7, the hook structures of the first web members and the second web members are arranged in a way of being opposite to the longitudinal direction, the longitudinal steel bar penetrates through the hooked structure and is fixed; be provided with U-shaped reinforcing bar 8 in the bottom plate, the parallel muscle perpendicular to bottom plate length direction of U-shaped reinforcing bar 8 sets up, and follows first web member with pass in the Λ -shaped structure of second web member, and lay the upper portion at vertical reinforcing bar. Fig. 2 shows the position of the U-shaped reinforcement 8 in the concrete floor.
The upper chord 3 is a steel pipe, a prestressed reinforcement 12 parallel to the upper chord 3 is pre-embedded in the steel pipe, and a filling material 11 formed by expansive concrete is poured in the steel pipe.
The concrete bottom plate 1 comprises lightweight aggregate, and the lightweight aggregate comprises perlite or ceramsite.
Example two:
FIG. 3 is a diagram illustrating a second embodiment. The difference between the second embodiment and the first embodiment is that in the second embodiment, the upper chord 3 is a steel pipe.
Example three:
fig. 4 and 5 are schematic diagrams of a third embodiment. The difference between the third embodiment and the first embodiment is that in the third embodiment, an N-shaped reinforcement bar 9 is arranged in the concrete bottom plate 1, and parallel ribs of the N-shaped reinforcement bar 9 are arranged perpendicular to the length direction of the concrete bottom plate, penetrate through the Λ -shaped structures of the first web member and the second web member, and are arranged on the upper portions of the longitudinal reinforcement bars. Fig. 5 shows the position of the N-shaped reinforcement 9 in the concrete floor 1.
Example four:
FIG. 6 is a diagram illustrating a fourth embodiment. The fourth embodiment is different from the third embodiment in that the upper chord 3 is a steel pipe in the fourth embodiment.
Fig. 7 is a schematic view of a web member with a hook structure in an embodiment.
The foregoing is illustrative of specific embodiments of the present invention and reference should be made to the implementation of apparatus and structures not specifically described herein, which is understood to be a general purpose apparatus and method of operation known in the art.
Meanwhile, the above embodiments of the present invention are only used for illustrating the technical solutions of the present invention, and are only examples of the technical solutions of the present invention, and are not used to limit the technical solutions of the present invention and the protection scope thereof. Modifications of the technical solutions disclosed in the claims and the specification by equivalent technical means, equivalent devices and the like should be considered as not exceeding the scope of the claims and the specification of the invention.
Claims (10)
1. The utility model provides a 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, first web member with the bottom of second web member is pre-buried in concrete bottom plate respectively, its characterized in that: the first web member and the second web member are arranged into an inverted V-shaped structure, two lower ends of the inverted V-shaped structure are arranged into hook structures, the hook structures of the first web member and the hook structures of the second web member are arranged oppositely and perpendicular to the longitudinal direction, and the longitudinal steel bars penetrate through the hook structures and are fixed; be provided with U-shaped reinforcing bar or N-shaped reinforcing bar in the concrete bottom plate, the parallel muscle perpendicular to concrete bottom plate length direction setting of U-shaped reinforcing bar or N-shaped reinforcing bar to follow first web member with pass in the Λ shape structure of second web member, and lay the upper portion at vertical reinforcing bar.
2. A floor for concrete prestressed folding according to claim 1, characterized in that said oppositely located one first and one second web member constitute a web member unit.
3. The bottom plate for concrete prestressed composite as recited in claim 1, characterized in that said longitudinal reinforcing bars are prestressed reinforcing bars.
4. The bottom plate for concrete prestressed concrete lamination according to claim 1, characterized in that said upper chord member is a steel pipe.
5. The bottom plate for concrete prestressed superposition according to claim 4, characterized by that both ends of said steel pipe are equipped with plugging pieces.
6. The bottom plate for concrete prestressed superposition according to claim 4, wherein said steel tube has an inner cavity filled with a filler, said filler being expansive concrete or expansive mortar.
7. The bottom plate for concrete prestressed superposition as recited in claim 4, characterized in that at least one prestressed reinforcement is pre-embedded in the inner cavity of said steel tube.
8. A bottom plate for concrete prestressed superposition according to any one of claims 1-7, characterized in that said concrete bottom plate comprises lightweight aggregate, said lightweight aggregate comprising perlite or ceramsite.
9. A bottom plate for concrete prestressed superposition according to any one of claims 1-7, characterized in that in the concrete bottom plate an anti-cracking net is set.
10. A bottom plate for concrete prestressed superposition according to any one of claims 1-7, characterized by that the side edges of longitudinal two ends of said concrete bottom plate are equipped with upper and lower double chamfers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821822.1A CN114075853A (en) | 2020-08-15 | 2020-08-15 | Bottom plate for concrete prestress superposition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821822.1A CN114075853A (en) | 2020-08-15 | 2020-08-15 | Bottom plate for concrete prestress superposition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114075853A true CN114075853A (en) | 2022-02-22 |
Family
ID=80280732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010821822.1A Pending CN114075853A (en) | 2020-08-15 | 2020-08-15 | Bottom plate for concrete prestress superposition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114075853A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045436A (en) * | 2022-06-21 | 2022-09-13 | 山东万斯达科技股份有限公司 | Steel pipe frame composite board and manufacturing method thereof |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131448A (en) * | 1993-07-19 | 1996-09-18 | 雷萨罗公司 | Arrangement at beam or building element and mould for making beam or building element |
| US20030182883A1 (en) * | 2001-05-04 | 2003-10-02 | Won Dae Yon | Prestressed composite truss girder and construction method of the same |
| CN1748065A (en) * | 2003-02-10 | 2006-03-15 | 乔治·韦格勒 | An arrangement of truss cords |
| CN105756252A (en) * | 2015-04-03 | 2016-07-13 | 张波 | Pre-stressed concrete truss composite slab and manufacturing method thereof |
-
2020
- 2020-08-15 CN CN202010821822.1A patent/CN114075853A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131448A (en) * | 1993-07-19 | 1996-09-18 | 雷萨罗公司 | Arrangement at beam or building element and mould for making beam or building element |
| US20030182883A1 (en) * | 2001-05-04 | 2003-10-02 | Won Dae Yon | Prestressed composite truss girder and construction method of the same |
| CN1748065A (en) * | 2003-02-10 | 2006-03-15 | 乔治·韦格勒 | An arrangement of truss cords |
| CN105756252A (en) * | 2015-04-03 | 2016-07-13 | 张波 | Pre-stressed concrete truss composite slab and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045436A (en) * | 2022-06-21 | 2022-09-13 | 山东万斯达科技股份有限公司 | Steel pipe frame composite board and manufacturing method thereof |
| CN115045436B (en) * | 2022-06-21 | 2023-12-05 | 山东万斯达科技股份有限公司 | Steel pipe rack combined plate and manufacturing method thereof |
| 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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