CN107366386A - A kind of multitube confined concrete double-walled open tubular column and production technology - Google Patents
A kind of multitube confined concrete double-walled open tubular column and production technology Download PDFInfo
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- CN107366386A CN107366386A CN201710671267.7A CN201710671267A CN107366386A CN 107366386 A CN107366386 A CN 107366386A CN 201710671267 A CN201710671267 A CN 201710671267A CN 107366386 A CN107366386 A CN 107366386A
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- frp
- multitube
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- tubular column
- open tubular
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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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- Architecture (AREA)
- Civil Engineering (AREA)
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Abstract
The present invention discloses a kind of multitube confined concrete double-walled open tubular column, including vertically arranged FRP outer tubes, FRP outer tubes are central axial to be provided with steel inner tube, self-compacting concrete layer is perfused between FRP outer tubes inner peripheral surface and steel inner tube outer peripheral face, be additionally provided between FRP outer tubes inner peripheral surface and steel inner tube outer peripheral face several by FRP inner tubes and be filled in its internal coagulation local soil type into FRP interior tube bodies, FRP interior tube bodies are circumferentially uniformly distributed on tube hub in steel, and the present invention also proposes a kind of production technology of multitube confined concrete double-walled open tubular column.The multitube confined concrete double-walled open tubular column of technical solution of the present invention has the advantages that ductility is good, ultimate bearing capacity is strong, while the production technology of technical solution of the present invention is applicable to the multitube confined concrete double-walled open tubular column of the multiple section form such as circular, square.
Description
Technical field
The present invention relates to building structure technology field, more particularly to a kind of multitube confined concrete double-walled open tubular column and production
Technique.
Background technology
Since reform and opening-up, Urbanization in China is progressively accelerated, and more populations are concentrated to city, therefore urban land provides
Source is further rare, and (super) skyscraper and (super) Loads of Long-span Bridges ground that arises at the historic moment are newly-built on a large scale, nowadays in the world 10 before height
The skyscraper of position, China then have 6, and 10 maximum cable-stayed bridges of world's upper span, China then has 7.
With building height and bridge span increase, on the one hand increase building deadweight, such as vertical load 85% above is
Building is conducted oneself with dignity, therefore it is required that the bearing capacity of building further improves, the deadweight increase of another aspect building, which can increase, builds
Build thing cost.Therefore, lightweight and Materials with High Strength rationally are used, and optimizes structure type for mitigating fabric structure deadweight and drop
Low cost is significant.
In addition, China is located in circum-Pacific seismic belt and Eurasian earthquake zone, therefore earthquake takes place frequently, and is earthquake disaster in the world
Serious country.Nearly ten years, there occurs 7.9 grades and 7.1 grades special violent earthquakes twice, a large amount of buildings respectively for China Wenchuan and cajaput
Thing collapses because of shock resistance deficiency, causes huge life and property loss.(if super) skyscraper and (super) Loads of Long-span Bridges exist
Collapsed during earthquake, loss is then inestimable, and consequence is hardly imaginable.Therefore, (super) skyscraper and (super) how are made
Loads of Long-span Bridges has the severe challenge that preferable anti-seismic performance has turned into Structural Engineering.
Meanwhile fiber composite reinforcing material (fiberreinforcedpolymer, FRP) is because excellent with lightweight, high-strength etc.
More characteristic and be widely used in Reinforcement of Engineering Structure field, its be applied to newly-built structure also turn into researcher and engineering in recent years
Teacher's focus of attention.
The content of the invention
The main object of the present invention is to propose that the multitube confined concrete double-walled that a kind of ductility is good, ultimate bearing capacity is strong is empty
Stem, the present invention also propose a kind of production technology, it is intended to improve multitube confined concrete double-walled open tubular column ductility is good and the limit
Bearing capacity, and facilitate engineering staff's standardization, high quality, efficiently to produce the multitube confined concrete double-walled hollow
Post.
To achieve the above object, a kind of multitube confined concrete double-walled open tubular column proposed by the present invention, it is characterised in that bag
Vertically arranged FRP outer tubes are included, the FRP outer tubes are central axial to be provided with steel inner tube, the FRP outer tubes inner peripheral surface and the steel
Self-compacting concrete layer is perfused between inner tube outer peripheral face, between the FRP outer tubes inner peripheral surface and the steel inner tube outer peripheral face also
Be provided with several by FRP inner tubes and be filled in the coagulation local soil types of the FRP internal tubes into FRP interior tube bodies, in the FRP
Body is circumferentially uniformly distributed on tube hub in the steel.
Preferably, the FRP outer tubes and the FRP inner tubes can use reciprocating pressure stochastic distribution, continuous fibrous twine
Winding technologe or centrifugation casting craft are made.
Preferably, the FRP outer tubes and the Fiber Materials of the FRP inner tubes are carbon fiber, glass fibre, basalt fibre
Or aramid fiber.
Preferably, the FRP outer tubes and the basic material of the FRP inner tubes are unsaturated polyester (UP), epoxy resin or phenolic aldehyde
Resin.
Preferably, the FRP outer tubes radial direction cross-sectional profile is circular, oval, square, rectangle, polygon.
Preferably, the steel inner tube radial cross-section profile is circular, oval, square, rectangle, polygon.
Preferably, the FRP inner tubes radial cross-section profile is circular, ellipse.
The present invention also proposes a kind of production technology for producing the multitube confined concrete double-walled open tubular column, including following step
Suddenly：
1) filling concrete is formed into FRP interior tube bodies in the FRP internal tubes and conserved；
2) the steel inner tube is fixed on the FRP outer tubes axial centre, the FRP interior tube bodies that maintenance finishes is shifted to an earlier date
It is circumferential to be uniformly fixed between the FRP outer tubes inner peripheral surface and the steel inner tube outer peripheral face；
3) to injecting self-compacting concrete between the FRP outer tubes inner peripheral surface and the steel inner tube outer peripheral face, described in filling
Space between FRP outer tubes inner peripheral surface, the FRP interior tube bodies outer peripheral face and the steel inner tube outer peripheral face；
4) to the multitube confined concrete double-walled open tubular column using steaming process, healthy liquid method, full water method, natural curing or
Curing film, which is conserved to concrete, reaches expected intensity.
Technical solution of the present invention passes through in FRP outer tubes, the internal FRP interior tube bodies for filling local restriction concrete layer, steel
Pipe and self-compacting concrete are combined into a structural elements.FRP outer tubes can impose hoop constraint active force, and more circumferences are uniform
The FRP interior tube bodies of distribution still impose hoop constraint when FRP outer tubes are destroyed to multitube confined concrete double-walled open tubular column
Active force, so as to lift the ultimate strength of local restriction concrete.Therefore compared with the prior art, the multitube of technical solution of the present invention
Confined concrete double-walled open tubular column has higher ductility and ultimate bearing capacity, it is ensured that having in application process reliably makes
Use security.
In addition, the multitube confined concrete double-walled open tubular column of technical solution of the present invention in center by setting in steel
Pipe, can both reduce overall weight, multitube confined concrete double-walled open tubular column is had good structural strength and rigidity.Together
When, from FRP material as FRP outer tubes and the material of FRP inner tubes so that have inside multitube confined concrete double-walled open tubular column
Good corrosion resistance.
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
There is the required accompanying drawing used in technology description to be 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
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is multitube confined concrete double-walled open tubular column cross-sectional structure schematic diagram of the embodiment of the present invention；
Fig. 2 is another embodiment of the present invention multitube confined concrete double-walled open tubular column cross-sectional structure schematic diagram.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 1 | FRP outer tubes | 22 | Local restriction concrete layer |
| 2 | FRP interior tube bodies | 3 | Self-compacting concrete layer |
| 21 | FRP inner tubes | 4 | Steel inner tube |
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
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 describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
If it is to be appreciated that related in the embodiment of the present invention directionality instruction (such as up, down, left, right, before and after ...),
Then directionality instruction be only used for explaining relative position relation under a certain particular pose (as shown in drawings) between each part,
Motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, " first ", " second " etc. are somebody's turn to do
Description be only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating indicated skill
The quantity of art feature.Thus, " first " is defined, the feature of " second " can be expressed or implicitly includes at least one spy
Sign.In addition, the technical scheme between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
Based on enough realizations, the knot of this technical scheme is will be understood that when the combination appearance of technical scheme is conflicting or can not realize
Conjunction is not present, also not within the protection domain of application claims.
The present invention proposes a kind of multitube confined concrete double-walled open tubular column.
Refer to Fig. 1, the multitube confined concrete double-walled open tubular column of the embodiment of the present invention, including outside vertically arranged FRP
Pipe 1, FRP outer tubes 1 are central axial to be provided with steel inner tube 4, if being additionally provided between the inner peripheral surface of FRP outer tubes 1 and the outer peripheral face of steel inner tube 4
The FRP interior tube bodies 2 of the dry inside of FRP inner tubes 21 filling local restriction concrete layer 22, and the FRP interior tube bodies 2 of the present embodiment
Setting is circumferentially uniformly distributed on the central shaft of steel inner tube 4, while in the inner peripheral surface of FRP outer tubes 1, the outer peripheral face of steel inner tube 4 and FRP
Space between the outer peripheral face of body 2 is filled with the self-compacting concrete layer 2 that self-compacting concrete is formed.
In the embodiment of the present invention, FRP outer tubes 1 and FRP inner tubes 21 can use reciprocating pressure stochastic distribution, continuous fibrous
Winding process or centrifugation casting craft are made.
In embodiments of the present invention, FRP outer tubes 1 and the Fiber Materials of FRP inner tubes 21 can be carbon fiber, it is glass fibre, profound
Military rock fiber or aramid fiber；FRP outer tubes 1 and the basic material of FRP inner tubes 21 can be unsaturated polyester (UP), epoxy resin or phenolic aldehyde tree
Fat.
In embodiments of the present invention, the radial cross-section profile of FRP outer tubes 1 is circle, and the radial cross-section profile of steel inner tube 4 is
Circle, the radial cross-section of FRP inner tubes 21 are circle.Fig. 2 is referred to, in another embodiment of the invention, the footpath of FRP outer tubes 1
It is square to cross-sectional profile, the radial cross-section of steel inner tube 4 is also to be square, and the radial cross-section of FRP inner tubes 21 is circle.At this
In the other embodiment of invention, the radial cross-section profile of FRP outer tubes 1 can be ellipse, rectangle and other polygons, and in steel
The radial cross-section profile of pipe 4 can be ellipse, rectangle and other polygons, and the radial cross-section of FRP inner tubes 21 can be ellipse
Shape.
The present invention also proposes a kind of production technology for producing multitube confined concrete double-walled open tubular column, specifically includes following step
Suddenly：
1) concrete layer 22 is poured into FRP inner tubes 21 to be internally formed FRP interior tube bodies 2 and conserved；
2) steel inner tube 4 is fixed on the axial centre of FRP outer tubes 1, the FRP interior tube bodies 2 that maintenance is finished shift to an earlier date circumferential uniform
It is fixed between the inner peripheral surface of FRP outer tubes 1 and the outer peripheral face of steel inner tube 4；
3) to self-compacting concrete is injected between the inner peripheral surface of FRP outer tubes 1 and the outer peripheral face of steel inner tube 4, fill in FRP outer tubes 1
Space between side face, the outer peripheral face of FRP interior tube bodies 2 and the outer peripheral face of steel inner tube 4, form self-compacting concrete layer 3；
4) multitube confined concrete pair is conserved using steaming process, healthy liquid method, full water method, natural curing or curing film
Wall open tubular column to self-compacting concrete layer 3 reaches expected intensity.
Fig. 1 is referred to, the production multitube confined concrete double-walled open tubular column of the embodiment of the present invention is in production, by part about
Beam concreting is conserved in the inner space of FRP inner tubes 21 and within certain time and condition.Steel inner tube 4 is put
It is placed in the center position of FRP outer tubes 1 so that steel inner tube 4 overlaps with the central axis of FRP outer tubes 1.Then it will conserve and solidify
The FRP interior tube bodies 2 finished are fixed between the inner peripheral surface of FRP outer tubes 1 and the outer peripheral face of steel inner tube 4 in position with distance piece in advance, and
And FRP interior tube bodies 2 are uniformly distributed in circumferential, self-compacting concrete is reinjected in FRP outer tubes 1, steel inner tube 4, FRP interior tube bodies
Between 2 in position so that a structural elements is combined between FRP interior tube bodies 2 and steel inner tube 4 and self-compacting concrete.Most
Afterwards, to be conserved multitube confined concrete double-walled using steaming process, healthy liquid method, full water method, natural curing or curing film hollow
Post to self-compacting concrete layer 3 reaches expected intensity.
Multitube confined concrete double-walled open tubular column of the embodiment of the present invention is when bearing axial compressive force, local restriction concrete layer
22 and self-compacting concrete layer 3, expand, acted on by FRP outer tubes 1 and the hoop constraint of FRP inner tubes 21, so as to be in three-dimensional
Pressured state.As load is continuously increased, there is crack inside local restriction concrete layer 22 and self-compacting concrete layer 3, to
Outer expansion is more obvious, FRP outer tubes 1 and the hoop constraint of FRP inner tubes 21 enhancing being subject to.When axial compressive load increases to necessarily
After numerical value, the constantly expansion of self-compacting concrete layer 3 causes the hoop constraint power of FRP outer tubes 1 constantly to increase and reach FRP outer tubes
During 1 fracture strength, FRP outer tubes 1 occur to destroy and performance of losing the job so that and self-compacting concrete layer 3 destroys simultaneously,
It can not continue to undertake axial compressive force.Now, because constraint of the FRP inner tubes 21 to local confined concrete 22 is stronger, FRP interior tube bodies
2 can also continue to bear axial compressive force, until multitube confined concrete double-walled after the rupture failure of the generation FRP material of FRP inner tubes 21
Open tubular column just destroys completely.
Therefore, FRP outer tubes 1, inside are marked with local restriction by multitube of embodiment of the present invention confined concrete double-walled open tubular column
Combined member is made in FRP interior tube bodies 2, steel inner tube 4 and the self-compacting concrete layer 3 of concrete layer 22.FRP outer tubes 1 can impose
Hoop constraint active force, and the equally distributed FRP interior tube bodies 2 of more circumferences when FRP outer tubes 1 are destroyed still to multitube about
Beam concrete double-walled open tubular column imposes hoop constraint active force and axial supporting force.Therefore compared with the prior art, the present invention
The multitube confined concrete double-walled open tubular column of embodiment has higher ductility and ultimate bearing capacity, it is ensured that in application process
With more preferable security.
In addition, the multitube confined concrete double-walled open tubular column of the embodiment of the present invention is in center by setting steel inner tube 4,
Form hollow unit, it is possible to reduce member dead weight, while ensure that multitube confined concrete double-walled open tubular column has good knot
Structure strength and stiffness.From FRP material as FRP outer tubes 1 and the material of FRP inner tubes 21 so that multitube confined concrete double-walled
There is good corrosion resistance inside open tubular column.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every at this
Under the design of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/it is used in indirectly
He is included in the scope of patent protection of the present invention related technical field.
Claims (8)
1. a kind of multitube confined concrete double-walled open tubular column, it is characterised in that including vertically arranged FRP outer tubes, outside the FRP
Tube hub is axially arranged steel inner tube, and being perfused with self-compaction between the FRP outer tubes inner peripheral surface and the steel inner tube outer peripheral face mixes
Solidifying soil layer, is additionally provided with several by FRP inner tubes between the FRP outer tubes inner peripheral surface and the steel inner tube outer peripheral face and is filled in
The coagulation local soil type of the FRP internal tubes into FRP interior tube bodies, the FRP interior tube bodies are circumferentially equal on tube hub in the steel
Even distribution.
2. multitube confined concrete double-walled open tubular column as claimed in claim 1, it is characterised in that FRP outer tubes and described
FRP inner tubes can use reciprocating pressure stochastic distribution, continuous fibrous winding process or centrifugation casting craft to be made.
3. multitube confined concrete double-walled open tubular column as claimed in claim 1, it is characterised in that FRP outer tubes and described
The Fiber Materials of FRP inner tubes are carbon fiber, glass fibre, basalt fibre or aramid fiber.
4. multitube confined concrete double-walled open tubular column as claimed in claim 1, it is characterised in that FRP outer tubes and described
The basic material of FRP inner tubes is unsaturated polyester (UP), epoxy resin or phenolic resin.
5. multitube confined concrete double-walled open tubular column as claimed in claim 1, it is characterised in that the FRP outer tubes are radially horizontal
Cross-sectional shape is circular, oval, square, rectangle, polygon.
6. multitube confined concrete double-walled open tubular column as claimed in claim 1, it is characterised in that the steel inner tube is radially transversal
Facial contour is circular, oval, square, rectangle, polygon.
7. multitube confined concrete double-walled open tubular column as claimed in claim 1, it is characterised in that the FRP inner tubes are radially horizontal
Cross-sectional shape is circular, ellipse.
8. a kind of production technology for producing the multitube confined concrete double-walled open tubular column as described in claim 1 to 7 is any, its feature
It is, comprises the following steps：
1) filling concrete is formed into FRP interior tube bodies in the FRP internal tubes and conserved；
2) the steel inner tube is fixed on the FRP outer tubes axial centre, the FRP interior tube bodies that maintenance is finished shift to an earlier date circumferential
Uniformly it is fixed between the FRP outer tubes inner peripheral surface and the steel inner tube outer peripheral face；
3) self-compacting concrete is injected between the FRP outer tubes inner peripheral surface and the steel inner tube outer peripheral face, filled outside the FRP
Space between pipe inner peripheral surface, the FRP interior tube bodies outer peripheral face and the steel inner tube outer peripheral face；
4) steaming process, healthy liquid method, full water method, natural curing or maintenance are used to the multitube confined concrete double-walled open tubular column
Film, which is conserved to concrete, reaches expected intensity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671267.7A CN107366386A (en) | 2017-08-08 | 2017-08-08 | A kind of multitube confined concrete double-walled open tubular column and production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671267.7A CN107366386A (en) | 2017-08-08 | 2017-08-08 | A kind of multitube confined concrete double-walled open tubular column and production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107366386A true CN107366386A (en) | 2017-11-21 |
Family
ID=60309953
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|---|---|---|---|
| CN201710671267.7A Pending CN107366386A (en) | 2017-08-08 | 2017-08-08 | A kind of multitube confined concrete double-walled open tubular column and production technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166833A (en) * | 2017-11-16 | 2018-06-15 | 广东工业大学 | A kind of prefabricated multitube confined concrete double-walled open tubular column, building technology and column tube tower |
| CN108397355A (en) * | 2018-02-27 | 2018-08-14 | 新疆金风科技股份有限公司 | Pylon and wind power generating set |
| CN108560828A (en) * | 2018-05-23 | 2018-09-21 | 广东工业大学 | Prefabricated assembled multitube confined concrete double-walled open tubular column, process units and technique |
| WO2022066686A1 (en) * | 2020-09-24 | 2022-03-31 | Valmont Industries, Inc. | An improved pole assembly |
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| WO2022066686A1 (en) * | 2020-09-24 | 2022-03-31 | Valmont Industries, Inc. | An improved pole assembly |
| US11970874B2 (en) | 2020-09-24 | 2024-04-30 | Valmont Industries, Inc. | Pole assembly |
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Application publication date: 20171121 |