CN106948550A - A kind of FRP tube nucleus heart reinforcing bar sea sand concrete columns - Google Patents
A kind of FRP tube nucleus heart reinforcing bar sea sand concrete columns Download PDFInfo
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- CN106948550A CN106948550A CN201710197754.4A CN201710197754A CN106948550A CN 106948550 A CN106948550 A CN 106948550A CN 201710197754 A CN201710197754 A CN 201710197754A CN 106948550 A CN106948550 A CN 106948550A
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- frp pipes
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- steel skeleton
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- layer frp
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
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Abstract
The invention discloses a kind of FRP tube nucleus heart reinforcing bar sea sand concrete columns, managed including outer layer FRP and internal layer FRP pipes and steel skeleton in outer layer FRP pipes, it is sheathed on outside the internal layer FRP in the outer layer FRP pipes, and internal layer FRP pipes are fixed together with outer layer FRP pipes filled with marine sand concrete between internal layer FRP pipes and outer layer FRP pipes；Internal layer FRP pipes are fixed together by the steel skeleton in internal layer FRP pipes, and between internal layer FRP pipes and steel skeleton filled with concrete with steel skeleton；Axial direction extension distribution of the steel skeleton along internal layer FRP pipes.Original sea sand can be used directly in the present invention, without carrying out desalt processing to original sea sand, it then can be used for marine sand concrete is made and carries out cylinder and pours, drastically increase the durability of cylinder, freshwater resources are saved, the process omitted and desalinated, drastically increases the utilization rate of sea sand, with intensity and the good beneficial effect of load-carrying properties.
Description
Technical field
The invention belongs to building engineering structure field, a kind of FRP pipes-core reinforcing bar sea sand concrete columns are referred in particular to.
Background technology
With China's science and technology continue to develop and building engineering field breakthrough successively, New Building Materials are more
Enter among the life of people.Although the large population base of China, the occupancy volume per person of natural resources is seldom, coagulation
Soil is as the part of structure, and the construction to engineering plays indispensable effect, and river sand is used as the bone for preparing concrete
Expect one of composition, the excavation of its riverbed for being mainly derived from land and massif.In recent years, substantial amounts of exploitation river sand, to riverbed
And its ecological environment on periphery causes serious destruction.The resource of river sand increasingly deficient, we need badly to find it is a kind of green
The alternative materials of color improve the natural environment that we depend on for existence.And sea sand has that reserves are big, clay content is low, modulus of fineness is equal
The advantages of uniform distribution is wide, but also because of the objectionable impurities that its own contains the corrodible reinforcing bar passivation film such as chlorion, serious shadow
The service life of structure is rung.Therefore, the use of sea sand often needs fresh water to carry out desalt processing, treats that it reaches the mark of building sand
Standard, can be used.But the processing method that tradition desalts to sea sand desalting is extremely cumbersome, and the time of desalt processing is long, and efficiency is low,
Substantial amounts of freshwater resources and manpower and financial resources are wasted, this causes its great barrier produced in the popularization that fresh water lacks area
Hinder.
FRP (Fiber Reinforced Polymer, i.e. fiber-reinforced polymer) pipe concretes are because with three-dimensional constraint
Concrete strength, deformable amount be larger and the advantages of good designability, its industrial factory building that can be used in corrosive environment, near
Tide wet marine environment building, science of bridge building and offshore platform engineering etc..But tradition FRP pipe confined concretes still suffer from following
Shortcoming, and have a strong impact on its popularization in engineering.First, the fragility of FRP material is larger so that FRP pipe concretes are reaching
It can suddenly be destroyed under ultimate bearing capacity state, and cause the direct avalanche of building structure.In addition, being poured just in FRP pipe concretes
Phase, its rigidity and bearing capacity are relatively low, there may be excessive deformation or the situation of unstability under concrete gravity, and cause building
Structure does not reach preferable intensity and load-carrying properties.
The content of the invention
It is an object of the invention to regarding to the issue above there is provided a kind of without carrying out desalt processing to sea sand, intensity and hold
Carry the good FRP pipes-core reinforcing bar sea sand concrete columns of performance.
The purpose of the present invention can be reached using following technical scheme：
A kind of FRP pipes-core reinforcing bar sea sand concrete columns, including outer layer FRP pipes and the internal layer in outer layer FRP pipes
FRP is managed and steel skeleton, and the internal layer FRP pipe sleeves are in outer layer FRP pipes, and internal layer FRP is managed between outer layer FRP pipes
Internal layer FRP pipes are fixed together with outer layer FRP pipes filled with marine sand concrete；The steel skeleton is located at the internal layer FRP
In pipe, and internal layer FRP pipes are fixed together with steel skeleton filled with concrete between internal layer FRP pipes and steel skeleton；It is described
Axial direction extension distribution of the steel skeleton along internal layer FRP pipes.
As a kind of preferred scheme, the connecting plate for improving moment of flexure intensity is installed with the steel skeleton.
As a kind of preferred scheme, the connecting plate is set to multiple, and the connecting plate is fixedly connected with the steel skeleton,
Form dies, or sphere of movements for the elephants type structure, or square structure.
Further, it is vertical on steel skeleton to be installed with four connecting plates, form " ten " font structure, and " ten "
Four end verticals of font structure are installed with four connecting plates, and form sphere of movements for the elephants type structure.
As a kind of preferred scheme, the steel skeleton is on the central axis of the internal layer FRP pipes, and steel skeleton edge
The central axial direction extension distribution of internal layer FRP pipes.
As a kind of preferred scheme, the section of the outer layer FRP pipes is circular, or oval or square.
Further, the section of the internal layer FRP pipes is circle.
In further, the section of the outer layer FRP pipes is ellipse, and the section of the internal layer FRP pipes is circle, described
Internal layer FRP pipes are on the eccentric position in outer layer FRP pipes.
As a kind of preferred scheme, the connecting plate is integrally machined shaping with steel skeleton use and connected together.
Implement the present invention, have the advantages that：
1st, the present invention is constituted double using double FRR tubular constructions, and by filling marine sand concrete between ectonexine FRP pipes
FRP pipe concrete cylinder structures.Because FRP pipes have corrosion resistance, in the case where the isolation of internal layer FRP pipes is made, both played to common
The effect that steel skeleton in concrete is protected, and improve under the booster action of marine sand concrete the bulk strength of cylinder
And load-carrying properties so that the harmful substance such as chlorion in marine sand concrete can not be diffused into the concrete in internal layer FRP pipes
Steel skeleton at, effective corrosion that must prevent it to steel skeleton.I.e. original sea sand can be used directly in this structure, without to original sea
Sand carries out desalt processing, then can be used for marine sand concrete is made and carries out cylinder and pours, drastically increase the durable of cylinder
Property, freshwater resources are saved, the process omitted and desalinated drastically increases the utilization rate of sea sand.
2nd, the present invention in internal layer FRP by managing built-in steel skeleton, and steel skeleton can delay or suppress concrete oblique segmentation, improve
Rigidity, compression strength, ductility and the anti-seismic performance of cylinder.When coupled column reaches capacity bearing capacity, outer layer FRP pipes and internal layer
After the internal fiber of FRP pipes is oppressed and is broken, steel skeleton can still carry pressure, redistribute stress, and then make whole post
Body enters softening stress-displacement stage, prevents the generation of brittle break and causes the direct avalanche of building structure.
3rd, the present invention forms reinforcement shape column structure by the connection of connecting plate, steel skeleton and concrete, greatly improves
The bending-resistant performance of cylinder, it is to avoid the situation of unstability occurs in the construction stage for cylinder, solves existing FRP pipe concretes and is pouring
Initial stage is built, its rigidity and bearing capacity are relatively low, there may be excessive deformation or the situation of unstability under concrete gravity.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the first structure schematic diagram of FRP pipes of the present invention-core reinforcing bar sea sand concrete columns；
Fig. 2 is the second structural representation of FRP pipes of the present invention-core reinforcing bar sea sand concrete columns；
Fig. 3 is the 3rd structural representation of FRP pipes of the present invention-core reinforcing bar sea sand concrete columns；
Fig. 4 is the 4th structural representation of FRP pipes of the present invention-core reinforcing bar sea sand concrete columns；
Fig. 5 is the 5th structural representation of FRP pipes of the present invention-core reinforcing bar sea sand concrete columns.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment
Reference picture 1, the present embodiment is related to FRP pipes-core reinforcing bar sea sand concrete columns, including outer layer FRP pipes 1 and located at outer
Internal layer FRP pipes 2 and steel skeleton 3 in layer FRP pipes 1, the internal layer FRP pipes 2 are sheathed in the outer layer FRP pipes 1, and internal layer
Internal layer FRP pipes 2 and outer layer FRP pipes 1 are fixed together filled with marine sand concrete 4 between FRP pipes 2 and outer layer FRP pipes 1；
The steel skeleton 3 will be interior filled with concrete 5 in the internal layer FRP pipes 2, and between internal layer FRP pipes 2 and steel skeleton 3
Layer FRP pipes 2 are fixed together with steel skeleton 3；Axial direction extension distribution of the steel skeleton 3 along internal layer FRP pipes 2.
The present invention is constituted double using double FRR tubular constructions, and by filling marine sand concrete 4 between ectonexine FRP pipes 1
FRP pipe concrete cylinder structures.Because FRP pipes have corrosion resistance, in the case where the isolation of internal layer FRP pipes 2 is made, both played to common
The effect that steel skeleton 3 in concrete 5 is protected, and improve under the booster action of marine sand concrete 4 entirety of cylinder
Intensity and load-carrying properties so that the harmful substance such as chlorion in marine sand concrete 4 can not be diffused into mixed in internal layer FRP pipes 2
At steel skeleton 3 in solidifying soil 5, effective corrosion that must prevent it to steel skeleton 3.I.e. original sea sand, nothing can be used directly in this structure
Desalt processing need to be carried out to original sea sand, then can be used for marine sand concrete 4 is made and carries out cylinder and pours, drastically increase
The durability of cylinder, has saved freshwater resources, and the process omitted and desalinated drastically increases the utilization rate of sea sand.
By the way that in steel skeleton 3 built in internal layer FRP pipes 2, steel skeleton 3 can delay or suppress the oblique segmentation of concrete 5, cylinder is improved
Rigidity, compression strength, ductility and anti-seismic performance.When coupled column reaches capacity bearing capacity, outer layer FRP pipes 1 and internal layer FRP
After the internal fiber of pipe 2 is oppressed and is broken, steel skeleton 3 can still carry pressure, redistribute stress, and then make whole cylinder
Into softening stress-displacement stage, prevent the generation of brittle break and cause the direct avalanche of building structure.
As shown in Fig. 1 to 5, the connecting plate 6 for improving moment of flexure intensity is installed with the steel skeleton 3.The connection
Plate 6 at least provided with one, even more than.Reinforcement shape cylinder knot is formed by connecting plate 6, the connection of steel skeleton 3 and concrete 5
Structure, substantially increases the bending-resistant performance of cylinder, it is to avoid the situation of unstability occurs in the construction stage for cylinder, solves existing FRP
Pipe concrete is pouring initial stage, and its rigidity and bearing capacity are relatively low, and there may be excessive deformation or unstability under concrete gravity
Situation.
The bending-resistant of cylinder is improved to further improve the connection tightness of connecting plate 6, steel skeleton 3 and concrete 5
Performance, the connecting plate 6 is set to multiple, and the connecting plate 6 is fixedly connected with the steel skeleton 3, forms dies, or
Sphere of movements for the elephants type structure, or square structure.The cross sectional shape of steel skeleton 3 can need to be selected according to engineering load-carrying properties and rigidity
Select, its cross sectional shape can be I-shaped, flute profile, T-shaped, cross, in-line, matrix pattern and circular or square etc..For example,
As shown in figure 1, vertical on steel skeleton 3 be installed with four connecting plates 6, " ten " font structure, and " ten " font are formed
Four end verticals of structure are installed with four connecting plates 6, and form sphere of movements for the elephants type structure.
The steel skeleton 3 is on the central axis of the internal layer FRP pipes 2, and center of the steel skeleton 3 along internal layer FRP pipes 2
Axis direction extension distribution.The steel skeleton 3 of the structure is located at the central axis of internal layer FRP pipes 2, may be such that steel skeleton 3, concrete
The connection of 5 and internal layer FRP pipes 2 has optimal structural strength and load-carrying properties.
The section of the outer layer FRP pipes 1 is circular, or oval or square.The section of the internal layer FRP pipes 2 is circle
Shape.
Outer layer FRP pipes 1 can also according to architectural appearance, use function, required bearing capacity and stiffness etc. requirement, Ke Yixuan
Select circle, ellipse, square and rectangle section with rounded corner etc..Optimal, the sections of outer layer FRP pipes 1 is circle to sea
The binding effect of sand concrete 4 is best, and bearing capacity is optimal.For example, as shown in Figure 3 and Figure 4, the section of the outer layer FRP pipes 1
For ellipse, the section of the internal layer FRP pipes 2 is circle, eccentric position of the internal layer FRP pipes 2 in outer layer FRP pipes 1
On.The outer layer FRP pipes 1 of the structure use elliptic cross-section, and internal layer FRP pipes 2 are built on the eccentric position of outer layer FRP pipes 1, steel
The section of skeleton 3 uses I-shaped, groove profile or rectangle.
The connecting plate 6 is integrally machined shaping with the use of steel skeleton 3 and connected together.Pass through integrally formed manufacturing process
The connecting plate 6 that is made has more preferable intensity and load-carrying properties with steel skeleton 3, improves the intensity and stably of cylinder maximizing
Property.
The steel skeleton 3 can combine steel sliding framework structure using rolling or solder type shaped steel, and by steel flanged beam or lattice.
Above disclosed is only a kind of preferred embodiment of the invention, can not limit the power of the present invention with this certainly
Sharp scope, therefore the equivalent variations made according to the claims in the present invention, still belong to the scope that the present invention is covered.
Claims (9)
1. a kind of FRP pipes-core reinforcing bar sea sand concrete columns, it is characterised in that：Managed including outer layer FRP and located at outer layer FRP pipes
Interior internal layer FRP pipes and steel skeleton, the internal layer FRP pipe sleeves are in outer layer FRP pipes, and internal layer FRP pipes and outer layer
Internal layer FRP pipes are fixed together with outer layer FRP pipes filled with marine sand concrete between FRP pipes；The steel skeleton is located at institute
State in internal layer FRP pipes, and be fixed on internal layer FRP pipes with steel skeleton filled with concrete between internal layer FRP pipes and steel skeleton
Together；Axial direction extension distribution of the steel skeleton along internal layer FRP pipes.
2. a kind of FRP pipes-core reinforcing bar sea sand concrete columns according to claim 1, it is characterised in that：The steel skeleton
On be installed with connecting plate for improving moment of flexure intensity.
3. a kind of FRP pipes-core reinforcing bar sea sand concrete columns according to claim 2, it is characterised in that：The connecting plate
It is set to multiple, the connecting plate is fixedly connected with the steel skeleton, forms dies, or sphere of movements for the elephants type structure, or side
Shape structure.
4. a kind of FRP pipes-core reinforcing bar sea sand concrete columns according to Claims 2 or 3, it is characterised in that：Steel skeleton
On be vertically installed with four connecting plates, form " ten " font structure, and four end verticals of " ten " font structure
Four connecting plates are installed with, and form sphere of movements for the elephants type structure.
5. according to a kind of any described FRP pipes-core reinforcing bar sea sand concrete columns of claims 1 to 3, it is characterised in that：Institute
Steel skeleton is stated on the central axis of the internal layer FRP pipes, and central axial direction extension point of the steel skeleton along internal layer FRP pipes
Cloth.
6. a kind of FRP pipes-core reinforcing bar sea sand concrete columns according to claim 1, it is characterised in that：The outer layer
The section of FRP pipes is circular, or oval or square.
7. a kind of FRP pipes-core reinforcing bar sea sand concrete columns according to claim 1, it is characterised in that：The internal layer
The section of FRP pipes is circle.
8. a kind of FRP pipes-core reinforcing bar sea sand concrete columns according to claim 6, it is characterised in that：The outer layer
The section of FRP pipes is ellipse, and the section of the internal layer FRP pipes is circle, and the internal layer FRP pipes are in outer layer FRP pipes
On eccentric position.
9. a kind of FRP pipes-core reinforcing bar sea sand concrete columns according to claim 4, it is characterised in that：The connecting plate
Shaping is integrally machined with steel skeleton use to connect together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197754.4A CN106948550A (en) | 2017-03-29 | 2017-03-29 | A kind of FRP tube nucleus heart reinforcing bar sea sand concrete columns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197754.4A CN106948550A (en) | 2017-03-29 | 2017-03-29 | A kind of FRP tube nucleus heart reinforcing bar sea sand concrete columns |
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| CN106948550A true CN106948550A (en) | 2017-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710197754.4A Pending CN106948550A (en) | 2017-03-29 | 2017-03-29 | A kind of FRP tube nucleus heart reinforcing bar sea sand concrete columns |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714577A (en) * | 2019-11-08 | 2020-01-21 | 南京林业大学 | Steel pipe concrete structure with built-in composite pipe seawater sea sand concrete |
| CN111395655A (en) * | 2020-03-05 | 2020-07-10 | 南京林业大学 | Sleeve-constrained reinforced concrete-reinforced seawater sea sand concrete structure |
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| CN207079814U (en) * | 2017-03-29 | 2018-03-09 | 广东工业大学 | A kind of FRP tube nucleus heart reinforcing bar sea sand concrete columns |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102425268A (en) * | 2011-10-24 | 2012-04-25 | 沈阳建筑大学 | Composite column by steel pipe-FRP tube-steel skeleton-concrete |
| CN102635202A (en) * | 2012-04-25 | 2012-08-15 | 北京工业大学 | Concrete reinforced column for steel framework of hybrid FRP (Fiber Reinforced Plastic) pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714577A (en) * | 2019-11-08 | 2020-01-21 | 南京林业大学 | Steel pipe concrete structure with built-in composite pipe seawater sea sand concrete |
| CN111395655A (en) * | 2020-03-05 | 2020-07-10 | 南京林业大学 | Sleeve-constrained reinforced concrete-reinforced seawater sea sand concrete structure |
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