CN212001825U - Stirrup reinforcing bar reactive powder concrete superimposed sheet - Google Patents
Stirrup reinforcing bar reactive powder concrete superimposed sheet Download PDFInfo
- Publication number
- CN212001825U CN212001825U CN202020151506.3U CN202020151506U CN212001825U CN 212001825 U CN212001825 U CN 212001825U CN 202020151506 U CN202020151506 U CN 202020151506U CN 212001825 U CN212001825 U CN 212001825U
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- CN
- China
- Prior art keywords
- reinforcing steel
- steel bars
- powder concrete
- bars
- stirrup
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- 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.)
- Expired - Fee Related
Links
- 239000000843 powder Substances 0.000 title claims abstract description 34
- 230000003014 reinforcing effect Effects 0.000 title abstract description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000009826 distribution Methods 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 description 10
- 238000005266 casting Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
Images
Abstract
The utility model discloses a stirrup reinforcing bar reactive powder concrete superimposed sheet. The laminated slab consists of an active powder concrete pouring prefabricated bottom plate, an active powder concrete pouring post-pouring layer, shear steel bars and bottom steel bars; the bottom reinforcing steel bars comprise longitudinal stress bars and transverse distribution bars, the shear reinforcing steel bars are stirrup reinforcing steel bars, the stirrup reinforcing steel bars are composed of upper chord reinforcing steel bars and web member reinforcing steel bars, the height-to-width ratio of the core dimension of the cross section is 4:3, the upper chord reinforcing steel bars are perpendicular to the web member reinforcing steel bars, and the distribution intervals of the web member reinforcing steel bars are equal to the distribution intervals of the transverse distribution bars of the bottom reinforcing steel bars. The utility model discloses have very good bending resistance mechanical properties and rigidity, and energy-concerving and environment-protective, the production of being convenient for, the durability is good.
Description
Technical Field
The utility model belongs to the technical field of civil engineering structural component, in particular to stirrup reinforcing bar active powder concrete superimposed sheet.
Background
The concrete laminated structure is an integral structure formed by manufacturing concrete prefabricated parts in a factory, transporting the concrete prefabricated parts to a site, assembling and then pouring a layer of concrete. The laminated structure can overcome the defects of complex procedures of the whole pouring type concrete structure and weakened integral rigidity of the fabricated structure, and has the advantages of the whole pouring type concrete structure and the fabricated structure, thereby being widely applied to engineering.
The reactive powder concrete study began in the experiment of Bouygues, france, 1993. According to the maximum compactness theory, coarse aggregate is removed, raw materials comprise fine quartz sand, cement, silicon powder, fine steel fiber, a high-efficiency water reducing agent and the like, various particles are enabled to achieve maximum compactness, and forced stirring is carried out on the traditional concrete forming process. Compared with the conventional concrete, the reactive powder concrete has the characteristics of ultrahigh strength, high toughness, high durability, high temperature tolerance and the like.
The reactive powder concrete is applied to the concrete composite slab of the fabricated building, so that the problems of heavy structure, poor structural durability, poor ductility and the like of the common concrete composite slab can be well solved, and the reactive powder concrete has great significance for improving the strength of the structure resisting load, reducing the section size and increasing the spanning capability of the structure.
Disclosure of Invention
The utility model aims at providing a stirrup reinforcing bar reactive powder concrete superimposed sheet.
The utility model discloses a realize like this:
a stirrup reinforcement bar active powder concrete laminated slab comprises an active powder concrete pouring prefabricated bottom plate, an active powder concrete pouring post-pouring layer, shear reinforcement bars and bottom reinforcement bars; the bottom reinforcing steel bars comprise longitudinal stress bars and transverse distribution bars, the shear reinforcing steel bars adopt stirrup reinforcing steel bars, the stirrup reinforcing steel bars comprise upper chord reinforcing steel bars and web member reinforcing steel bars, the aspect ratio of the stirrup reinforcing steel bars is 4:3, the upper chord reinforcing steel bars and the web member reinforcing steel bars are vertically arranged, and the distribution intervals of the web member reinforcing steel bars are equal to the distribution intervals of the transverse distribution bars of the bottom reinforcing steel bars.
The utility model has the advantages that: the cross section size of the member can be effectively reduced, and the self weight of the structure is reduced, so that the cement consumption is reduced, and the energy conservation and environmental protection are realized; the member has good construction quality, is convenient for industrialized production, shortens the construction period, has small material loss, and reduces the requirements on site conditions of a construction site; the compressive and tensile strength and rigidity of the superposed member are obviously superior to those of a common concrete member, the deformation of the member can be reduced in the stress stage, and the cracking bending moment and the ultimate bending resistance bearing capacity of the member are improved.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a stirrup rebar reactive powder concrete composite in an embodiment of the invention.
FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention showing a stirrup-reinforced reactive powder concrete composite slab.
Fig. 3 is the utility model provides an embodiment stirrup reinforcing bar reactive powder concrete superimposed sheet's stirrup reinforcing bar spatial structure sketch map.
Fig. 4 is the embodiment of the utility model provides an in the stirrup reinforcing bar reactive powder concrete superimposed sheet prefabricated bottom plate, post-cast layer and coincide back framework of steel reinforcement's perspective schematic.
The labels in the figure are: 1-pouring active powder concrete to prefabricate the bottom plate; 2-casting a post-pouring layer by using active powder concrete; 3 a-upper chord steel bar; 3 b-web member reinforcing steel bars; 4 a-longitudinal stress bar; 4 b-transverse distribution ribs.
Detailed Description
Example (b):
the specific operation of the present invention is described below by the specific embodiment, and the operation of the present embodiment is only used for further explanation of the present invention, but is not limited to the protection scope of the present invention, and the content of making non-essential changes to those skilled in the art also belongs to the protection scope of the present invention.
With reference to fig. 1 to 4.
As shown in fig. 4, a stirrup-reinforced reactive powder concrete composite slab is composed of a reactive powder concrete cast precast floor 1, a reactive powder concrete cast post-cast layer 2, shear reinforcements, and bottom reinforcements.
The bottom reinforcing steel bar is divided into a longitudinal stress bar C12@ 1504 a and a transverse distribution bar C8@ 2004 b, and the bottom reinforcing steel bar is configured according to specific engineering conditions.
The shear steel bars are stirrup steel bars as shown in fig. 1 and 2, and are composed of upper chord steel bars C103 a and web member steel bars C63 b, the aspect ratio of the section core size is 4:3, the upper chord steel bars 3a are vertically arranged with the web member steel bars 3b, and the distribution spacing of the web member steel bars 3b is equal to the distribution spacing of the transverse distribution bars 4b of the bottom steel bars.
As shown in fig. 4, before the prefabricated base plate 1 is cast with the reactive powder concrete, the shear reinforcement and the base plate reinforcement are bound.
The size of the active powder concrete pouring prefabricated bottom plate 1 is 3020 (length) × 600 (width) × 70 (thickness), and the steel reinforcement framework which is finished binding is put into the prepared template.
Sequentially pouring quartz sand, steel fiber (sieved by a steel sieve with the aperture of 12.5 mm), cement and silica fume with three different particle sizes into a forced mixer for dry material stirring, wherein the process is 4 minutes, then adding a water reducing agent and water, stirring for 6 minutes, fully stirring uniformly, pouring, and the axial compressive strength of the pouring can reach 142.3N/mm2。
And after the casting is finished, the surface of the active powder concrete casting prefabricated bottom plate 1 is leveled, then a 50-type manual concrete embossing device is used for carrying out rough treatment on the surface of the active powder concrete casting prefabricated bottom plate 1 to form a superposed surface with the roughness of 1.8mm, and finally natural curing is carried out for 28 days.
And (3) transporting the cured active powder concrete poured prefabricated base plate 1 to a construction site, pouring and curing the active powder concrete poured post-pouring layer 2, assembling the base plate with the same material ratio and strength and the post-pouring layer with the thickness of 60mm, and after the assembly is finished, erecting a formwork for secondary pouring and curing to finish the manufacture of the stirrup reinforcement active powder concrete laminated slab. The total thickness of the laminated plate is 130 mm. Tests prove that the span bending moment value of the stirrup steel bar reactive powder concrete laminated slab in the embodiment reaching the bearing capacity limit state is 36.95 kN.m.
Claims (1)
1. A stirrup steel bar active powder concrete composite slab is characterized by comprising an active powder concrete pouring prefabricated bottom plate (1), an active powder concrete pouring post-pouring layer (2), shear steel bars and bottom steel bars; the bottom reinforcing steel bar comprises a longitudinal stress bar (4 a) and a transverse distribution bar (4 b), the shear reinforcing steel bar is a stirrup reinforcing steel bar, the stirrup reinforcing steel bar is composed of an upper chord reinforcing steel bar (3 a) and a web member reinforcing steel bar (3 b), the height-to-width ratio of the core size of the cross section is 4:3, the upper chord reinforcing steel bar (3 a) and the web member reinforcing steel bar (3 b) are vertically arranged, and the distribution interval of the web member reinforcing steel bar (3 b) is equal to the distribution interval of the transverse distribution bar (4 b) of the bottom reinforcing steel bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020151506.3U CN212001825U (en) | 2020-02-04 | 2020-02-04 | Stirrup reinforcing bar reactive powder concrete superimposed sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020151506.3U CN212001825U (en) | 2020-02-04 | 2020-02-04 | Stirrup reinforcing bar reactive powder concrete superimposed sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212001825U true CN212001825U (en) | 2020-11-24 |
Family
ID=73421137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020151506.3U Expired - Fee Related CN212001825U (en) | 2020-02-04 | 2020-02-04 | Stirrup reinforcing bar reactive powder concrete superimposed sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212001825U (en) |
-
2020
- 2020-02-04 CN CN202020151506.3U patent/CN212001825U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201124 |
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| CF01 | Termination of patent right due to non-payment of annual fee |