CN109779152A - One kind be circular layout fiber-reinforced composite material grid ribs Punching Shear construction - Google Patents
One kind be circular layout fiber-reinforced composite material grid ribs Punching Shear construction Download PDFInfo
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- CN109779152A CN109779152A CN201910025432.0A CN201910025432A CN109779152A CN 109779152 A CN109779152 A CN 109779152A CN 201910025432 A CN201910025432 A CN 201910025432A CN 109779152 A CN109779152 A CN 109779152A
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- fiber
- punching shear
- composite material
- punching
- reinforced composite
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Abstract
It is circular layout fiber-reinforced composite material grid ribs Punching Shear construction the invention discloses one kind, including concrete slab and Punching Shear fiber-reinforced composite material grid ribs.Punching Shear fiber mesh muscle is annularly arranged in the slab-column connections region that punching failure easily occurs, to improve the punching shear resistant performance of concrete slab.Fiber-reinforced composite material grid ribs have many advantages, such as that light weight, intensity are high, corrosion-resistant, nonmagnetic, are suitable for mordant environment or the confrontation higher building of magnetic requirements.
Description
Technical field
The invention belongs to concrete structure technique fields, and in particular to one kind is circular layout fiber-reinforced composite material grid
Muscle Punching Shear construction.
Background technique
Plate-column structure can reduce the workload of template, accelerate construction progress.Due to not setting beam in superstructure, make in satisfaction
Under conditions of clear height, the total height of building can be reduced, house can be effectively reduced and build and go along with sb. to guard him expense.When basement or
When underground garage uses plate-column structure, it is possible to reduce the earthwork, supporting, precipitation, secondary structure etc. have preferable economic benefit.
In addition, plate-column structure is handsome in appearance, be conducive to divulge information, convenient for arrangement pipeline and installation equipment.In urban land anxiety and people
Require space flexible partition, visual effect higher and higher today, the advantage of plate-column structure is more and more significant.
Although plate-column structure has many advantages, such as, the punching failure problem of plate-column structure is extremely serious.In recent years, state
The inside and outside building collapsing accident as caused by punching failure causes biggish economic loss.In order to improve the anti-of plate-column structure
Die-cutting performance, traditional way are setting bolumn cap, plate support and increase plate thickness.When bolumn cap or plate support is arranged, formwork works very
Complexity increases difficulty of construction, and it is beautiful to influence building.When increasing the thickness of plate, in addition to reducing head room, coagulation also will increase
Soil and amount of reinforcement increase expenditure of construction.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides one kind and is circular layout fiber reinforcement
Composite material grid ribs Punching Shear construction, the structural form can effectively improve the punching shear resistant performance of concrete slab.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
One kind is circular layout fiber mesh muscle Punching Shear construction, including concrete slab and Punching Shear fiber mesh muscle, anti-impact
Fiber mesh muscle is cut to be arranged in a ring in the slab-column connections region that punching failure easily occurs.
Further, the ratio of the vertical fiber spacing and transverse fiber spacing of the Punching Shear fiber mesh muscle is 1:
0.5-2。
Further, the vertical fibre section area of the Punching Shear fiber mesh muscle and transverse fiber area of section
Ratio is 1:0.5-2.
Further, the vertical fiber of the Punching Shear fiber mesh muscle and the intersection point of the punching failure conical surface are in plate and column
Intersect other than outer edge in the range of 1/2-2/3h, h is the height of concrete slab.
Further, the spacing of exterior portion of the transverse fiber of the Punching Shear fiber mesh muscle in concrete slab and
It is 0.4-0.8:1 in the ratio of the spacing of the inboard portion of concrete slab.
Further, the height that the height of the Punching Shear fiber mesh muscle is equal to concrete slab subtracts concrete cover
Thickness.
Further, the transverse fiber of the Punching Shear fiber mesh muscle and vertical fiber are carbon fiber, glass fibre, virtue
Any one of synthetic fibre fiber, basalt fibre or hybridization fiber.
The utility model has the advantages that one kind provided by the invention is circular layout, fiber-reinforced composite material grid ribs Punching Shear is constructed, this
Invention can effectively improve the punching shear resistant performance of concrete slab by arranging circumferential Punching Shear fiber mesh muscle in concrete slab.
According to the punching failure mechanism of plate, crack appears in the area Jian La in the middle part of plate, the vertical fibre of Punching Shear fiber mesh muscle first
Dimension intersects with the position (maximum tension stress position) that crack occurs, and can undertake a part of pulling force, can control distress in concrete
Carry out, reduces the width in crack.By encrypting transverse fiber, the caking property of Punching Shear fiber mesh muscle and concrete can be improved
Can, prevent fiber mesh muscle from fastening destruction occurs.
Detailed description of the invention
Fig. 1 is the fiber mesh muscle Punching Shear organigram that is circular layout；
Fig. 2 is the sectional view of A-A in Fig. 1；
Fig. 3 is Punching Shear fiber mesh muscle schematic diagram.
Specific embodiment
It is circular layout fiber-reinforced composite material grid ribs Punching Shear construction the invention discloses one kind, including concrete slab
With Punching Shear fiber-reinforced composite material grid ribs.Punching Shear fiber mesh muscle is annularly arranged in, punching failure easily occurs
Slab-column connections region, to improve the punching shear resistant performance of concrete slab.Fiber-reinforced composite material grid ribs have light weight, intensity
The advantages that high, corrosion-resistant, nonmagnetic, is suitable for mordant environment or the confrontation higher building of magnetic requirements.
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1-Figure 3, one kind being circular layout fiber-reinforced composite material grid ribs (hereinafter referred to as fiber mesh muscle)
Punching Shear construction, including concrete slab 1 and Punching Shear fiber mesh muscle 2.Punching Shear fiber mesh muscle is by transverse fiber a and vertically
Fiber b composition, Punching Shear fiber mesh muscle are annularly arranged in the slab-column connections region that punching failure easily occurs.
As a preferred embodiment, the ratio of the vertical fiber spacing and transverse fiber spacing of Punching Shear fiber mesh muscle is 1:
0.5-2。
As a preferred embodiment, the vertical fibre section area of Punching Shear fiber mesh muscle and transverse fiber area of section
Ratio is 1:0.5-2.
As a preferred embodiment, the vertical fiber of Punching Shear fiber mesh muscle and the intersection point of the punching failure conical surface are in plate and column
Intersect other than outer edge in the range of 1/2-2/3h, h is the height of concrete slab.
As a preferred embodiment, the transverse fiber of Punching Shear fiber mesh muscle the exterior portion of concrete slab spacing and
Be 0.4-0.8:1 in the ratio of the spacing of the inboard portion of concrete slab, with improve Punching Shear fiber mesh muscle and concrete it
Between adhesive property.
As a preferred embodiment, the height that the height of the Punching Shear fiber mesh muscle is equal to concrete slab subtracts concrete
Protective layer thickness.
As a preferred embodiment, the transverse fiber of the Punching Shear fiber mesh muscle and vertical fiber are carbon fiber, glass
Any one of fiber, aramid fiber, basalt fibre or hybridization fiber.
Embodiment
As shown in Figure 1-Figure 3, one kind is circular layout fiber mesh muscle Punching Shear construction, including concrete slab 1 and Punching Shear
Fiber mesh muscle 2.Punching Shear fiber mesh muscle is made of transverse fiber a and vertical fiber b.Concrete slab with a thickness of h, anti-impact
The spacing and area of section of the vertical fiber and transverse fiber of cutting fiber mesh muscle can be according to the Punching Shear requirements of concrete slab
It determines, wherein being located at the transverse fiber of concrete slab upper and lower part can suitably encrypt, with reinforcing fiber grid ribs and mixed
Adhesive property between solidifying soil.Vertical fiber should be outside plate and column intersect with the intersection point of the punching failure conical surface (being assumed to be 45 °)
Other than edge in the range of 1/2-2/3h.Punching Shear fiber mesh muscle kinds of fibers preferably selects the biggish carbon fiber of elasticity modulus.
By arranging circumferential Punching Shear fiber mesh muscle in concrete slab, the Punching Shear of concrete slab can be effectively improved
Energy.According to the punching failure mechanism of plate, crack appears in the area Jian La in the middle part of plate first, Punching Shear fiber mesh muscle it is vertical
The position (maximum tension stress position) that fiber occurs with crack is intersected, and can be undertaken a part of pulling force, be can control distress in concrete
Development, reduce the width in crack.By encrypting transverse fiber, the caking property of Punching Shear fiber mesh muscle and concrete can be improved
Can, prevent fiber mesh muscle from fastening destruction occurs.Fiber-reinforced composite material grid ribs have light weight, intensity it is high, it is corrosion-resistant,
The advantages that nonmagnetic, is suitable for mordant environment or the confrontation higher building of magnetic requirements.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. one kind is circular layout, fiber-reinforced composite material grid ribs Punching Shear is constructed, it is characterised in that: including concrete slab and
Punching Shear fiber mesh muscle, the Punching Shear fiber mesh muscle are annularly arranged in the slab-column connections area that punching failure easily occurs
Domain, the Punching Shear fiber mesh muscle are made of several transverse fibers disposed in parallel and several vertical fibers disposed in parallel.
2. according to one kind described in right 1 be circular layout fiber-reinforced composite material grid ribs Punching Shear construction, it is characterised in that:
The vertical fiber spacing of the Punching Shear fiber mesh muscle and the ratio of transverse fiber spacing are 1:0.5-2.
3. according to one kind described in right 1 be circular layout fiber-reinforced composite material grid ribs Punching Shear construction, it is characterised in that:
The vertical fibre section area of the Punching Shear fiber mesh muscle and the ratio of transverse fiber area of section are 1:0.5-2.
4. according to one kind described in right 1 be circular layout fiber-reinforced composite material grid ribs Punching Shear construction, it is characterised in that:
The vertical fiber of the Punching Shear fiber mesh muscle intersects 1/ other than outer edge with the intersection point of the punching failure conical surface in plate and column
In the range of 2-2/3h, h is the height of concrete slab.
5. according to one kind described in right 1 be circular layout fiber-reinforced composite material grid ribs Punching Shear construction, it is characterised in that:
The spacing of exterior portion of the transverse fiber of the Punching Shear fiber mesh muscle in concrete slab and inside in concrete slab
The ratio of partial spacing is 0.4-0.8:1.
6. according to one kind described in right 1 be circular layout fiber-reinforced composite material grid ribs Punching Shear construction, it is characterised in that:
The height that the height of the Punching Shear fiber mesh muscle is equal to concrete slab subtracts thickness of concrete cover.
7. according to one kind described in right 1 be circular layout fiber-reinforced composite material grid ribs Punching Shear construction, it is characterised in that:
The transverse fiber and vertical fiber of the Punching Shear fiber mesh muscle are carbon fiber, glass fibre, aramid fiber, basalt fibre
Or any one of hybridization fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910025432.0A CN109779152A (en) | 2019-01-11 | 2019-01-11 | One kind be circular layout fiber-reinforced composite material grid ribs Punching Shear construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910025432.0A CN109779152A (en) | 2019-01-11 | 2019-01-11 | One kind be circular layout fiber-reinforced composite material grid ribs Punching Shear construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109779152A true CN109779152A (en) | 2019-05-21 |
Family
ID=66500328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910025432.0A Pending CN109779152A (en) | 2019-01-11 | 2019-01-11 | One kind be circular layout fiber-reinforced composite material grid ribs Punching Shear construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN109779152A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032898A (en) * | 2014-06-03 | 2014-09-10 | 南京工业大学 | Three-dimensional fiber gird bar reinforced concrete structural part |
| CN108360751A (en) * | 2018-04-19 | 2018-08-03 | 中冶建筑研究总院有限公司 | Multiple material grid shearing resistance stirrup, beams of concrete and preparation process comprising it |
-
2019
- 2019-01-11 CN CN201910025432.0A patent/CN109779152A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032898A (en) * | 2014-06-03 | 2014-09-10 | 南京工业大学 | Three-dimensional fiber gird bar reinforced concrete structural part |
| CN108360751A (en) * | 2018-04-19 | 2018-08-03 | 中冶建筑研究总院有限公司 | Multiple material grid shearing resistance stirrup, beams of concrete and preparation process comprising it |
Non-Patent Citations (3)
| Title |
|---|
| BARIS BINICI: "Upgrading of slab–column connections using fiber reinforced polymers", 《ENGINEERING STRUCTURES》 * |
| 周氐: "《水工混凝土结构设计手册》", 31 January 1999, 中国水利水电出版社 * |
| 张鑫: "《土木工程检测鉴定与加固改造》", 30 September 2018, 中国建材工业出版社 * |
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Application publication date: 20190521 |