CN114075854A - Welding-free laminated plate - Google Patents
Welding-free laminated plate Download PDFInfo
- Publication number
- CN114075854A CN114075854A CN202010821826.XA CN202010821826A CN114075854A CN 114075854 A CN114075854 A CN 114075854A CN 202010821826 A CN202010821826 A CN 202010821826A CN 114075854 A CN114075854 A CN 114075854A
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- China
- Prior art keywords
- bottom plate
- web member
- concrete bottom
- concrete
- weld
- 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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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 239000002131 composite material Substances 0.000 claims abstract description 13
- 230000002787 reinforcement Effects 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 235000019362 perlite Nutrition 0.000 claims description 2
- 239000010451 perlite Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 2
- 210000002435 tendon Anatomy 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 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009739 binding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a welding-free composite slab, which comprises a concrete bottom plate and a truss arranged on the concrete bottom plate, 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 welding-free composite slab 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, each hook is an inverted open R-shaped structure, the hook structures arranged on the first web member and the second web member are arranged in a manner of being opposite to 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, and parallel bars of the U-shaped steel bars or the N-shaped steel bars are arranged perpendicular to the length direction of the bottom plate; 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 welding-free laminated slab.
(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 welding-free laminated slab, 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 exempt from to weld superimposed sheet, 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, each hook is an inverted open R-shaped structure, the inner hook structures of the first web member and the hook structures arranged on the second web member are arranged in a manner of being opposite to 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, and parallel bars of the U-shaped steel bars or the N-shaped steel bars are perpendicular to the length direction of the bottom plate. Therefore, the welding-free composite slab is convenient to manufacture, binding or welding connection is not needed between the web member and the longitudinal steel bar during manufacturing, the longitudinal steel bar is directly clamped into the hook structure, and the position of the longitudinal steel bar in the bottom plate is more accurate; and the hook structure is an inverted R-shaped structure, when the longitudinal steel bar is placed into the hook structure, the R-shaped opening edge guides the longitudinal steel bar to enter the R-shaped opening, and the fastening opening of the R-shaped opening structure is opened until the longitudinal steel bar completely enters the hook structure, and the longitudinal steel bar is fastened.
Preferably, the longitudinal steel bar is a prestressed reinforcement. Like this for exempt from to weld superimposed sheet under vertical load effect, tensile stress does not appear, reinforcing stability.
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 hook structure in an embodiment;
fig. 8 is a dynamic view of the longitudinal reinforcement 3 snapping into the hook structure 7.
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 crotch structure, 8 are the U-shaped reinforcing bar, 9 are N-shaped reinforcing 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, 2 and 3, a welding-free composite slab comprises a concrete bottom plate 1 and a truss 2 arranged on the concrete bottom plate, wherein a longitudinal steel bar 3 parallel to the length direction of the concrete bottom plate 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 on two opposite sides of the upper chord, 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 Λ -shaped structure, two lower ends of the Λ -shaped structure are arranged in a hook structure 7, the hook structures of the first web members 5 and the second web members 2 are oppositely arranged perpendicular to the longitudinal direction, the longitudinal steel bar 3 passes through the hook structure 7 and is fixed; the concrete bottom plate 1 is internally provided with U-shaped steel bars 8, and parallel bars of the U-shaped steel bars 8 are arranged in a direction perpendicular to the length direction of the bottom plate. Fig. 2 shows the position of the U-shaped reinforcement 8 in the concrete floor. As shown in fig. 7 and 8, the hook structure 7 is an inverted open R-shaped structure,
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, an N-shaped steel bar 9 is arranged in the bottom plate, parallel bars of the N-shaped steel bar 9 are arranged perpendicular to the length direction of the bottom plate, and the longitudinal steel bar 3 passes through the hook structure 7 and is fixed. Fig. 5 shows the position of the N-shaped reinforcement 9 in the concrete floor 1. As shown in fig. 4, chamfers are arranged on the side edges of the two longitudinal ends of the concrete bottom plate, and the transverse steel bars are tilted upwards relative to the bottom plate.
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 exempt from to weld superimposed sheet, 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, each hook is an inverted open R-shaped structure, the hook structures arranged on the first web member and the second web member are arranged in a manner of being opposite to 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, and parallel bars of the U-shaped steel bars or the N-shaped steel bars are perpendicular to the length direction of the bottom plate.
2. A weld-free laminated slab as claimed in claim 1, wherein the longitudinal reinforcing bars are tendons.
3. The weld-free laminated slab of claim 1, wherein the upper chord member is a steel pipe.
4. The welding-free composite slab of claim 3, wherein the inner cavity of the steel pipe is cast with a filler, and the filler is expansive concrete or expansive mortar.
5. The weld-free laminated slab as claimed in claim 3, wherein at least one prestressed reinforcement is embedded in the inner cavity of the steel tube.
6. A weld-free composite according to any one of claims 1 to 5 wherein the concrete floor comprises a lightweight aggregate including perlite or ceramsite.
7. A weld-free composite slab as claimed in any one of claims 1 to 5, wherein the concrete bottom slab is provided with a crack-resistant mesh.
8. A weld-free composite slab as claimed in any one of claims 1 to 5, wherein the concrete bottom slab is chamfered at the upper side edges at both longitudinal ends thereof.
9. A weld-free composite according to claim 8 wherein the concrete floor has transverse reinforcement extending from the chamfered edge.
10. A weld-free composite according to claim 8 wherein the transverse reinforcement is raised upwardly relative to the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821826.XA CN114075854A (en) | 2020-08-15 | 2020-08-15 | Welding-free laminated plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821826.XA CN114075854A (en) | 2020-08-15 | 2020-08-15 | Welding-free laminated plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114075854A true CN114075854A (en) | 2022-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010821826.XA Pending CN114075854A (en) | 2020-08-15 | 2020-08-15 | Welding-free laminated plate |
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| Country | Link |
|---|---|
| CN (1) | CN114075854A (en) |
Citations (5)
| 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 |
| CN103114669A (en) * | 2013-03-13 | 2013-05-22 | 宝钢建筑系统集成有限公司 | Ribbed steel bar truss concrete superimposed sheet and construction method thereof |
| CN105756252A (en) * | 2015-04-03 | 2016-07-13 | 张波 | Pre-stressed concrete truss composite slab and manufacturing method thereof |
| CN208858046U (en) * | 2018-07-23 | 2019-05-14 | 浙江高盛钢结构有限公司 | A kind of truss structure of foamed concrete layer |
| CN110258927A (en) * | 2019-06-05 | 2019-09-20 | 浙江绿筑集成科技有限公司 | A kind of production method of orthogonal bar frame superimposed sheet |
-
2020
- 2020-08-15 CN CN202010821826.XA patent/CN114075854A/en active Pending
Patent Citations (5)
| 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 |
| CN103114669A (en) * | 2013-03-13 | 2013-05-22 | 宝钢建筑系统集成有限公司 | Ribbed steel bar truss concrete superimposed sheet and construction method thereof |
| CN105756252A (en) * | 2015-04-03 | 2016-07-13 | 张波 | Pre-stressed concrete truss composite slab and manufacturing method thereof |
| CN208858046U (en) * | 2018-07-23 | 2019-05-14 | 浙江高盛钢结构有限公司 | A kind of truss structure of foamed concrete layer |
| CN110258927A (en) * | 2019-06-05 | 2019-09-20 | 浙江绿筑集成科技有限公司 | A kind of production method of orthogonal bar frame superimposed sheet |
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