CN106013615B - A kind of FRP pipes constraint self-stressing concretes coupled column - Google Patents
A kind of FRP pipes constraint self-stressing concretes coupled column Download PDFInfo
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- CN106013615B CN106013615B CN201610453148.XA CN201610453148A CN106013615B CN 106013615 B CN106013615 B CN 106013615B CN 201610453148 A CN201610453148 A CN 201610453148A CN 106013615 B CN106013615 B CN 106013615B
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- frp
- self
- concrete
- stressing concretes
- pipes
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Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/266—Concrete reinforced with fibres other than steel or glass
Abstract
The present invention relates to Structural Engineerings and technical field of bridge engineering, a kind of FRP pipes constraint self-stressing concretes coupled column, including external FRP pipes and internal self-stressing concretes, the FRP pipes wrap up self-stressing concretes, seif-citing rate is generated by the expansion and constraining in FRP pipes and concrete for FRP of concrete, steel pipe or shaped steel are laid in the self-stressing concretes, and through the top of self-stressing concretes to bottom, or lay equally distributed longitudinal stress muscle on the periphery close to self-stressing concretes, and through the top of self-stressing concretes to bottom.The present invention can establish prestressing force by the expansion of concrete in FRP and concrete, avoid the Stress resort of FRP, give full play to the high-strength effects of FRP, keep concrete more closely knit simultaneously, improve the mechanical property of FRP constraint concrete column, and construction is simple, it is of low cost, it can be used for bridge and civil buildings.
Description
Technical field
The present invention relates to a kind of FRP pipes to constrain self-stressing concretes coupled column, belongs to Structural Engineering and science of bridge building technology
Field.
Background technology
Fibre reinforced composites (Fiber Reinforced Polymer, referred to as FRP) are with its high-strength light, corrosion resistant
The advantages such as erosion are more and more applied in civil engineering.Concrete is a kind of constraint sensitive material, lateral constraint
The intensity and ductility of concrete can be effectively improved.FRP constraint concrete column applies sidewise restraint using FRP to concrete,
The bearing capacity and ductility that concrete column can be effectively improved receive a large amount of of domestic and foreign scholars in nearest more than 20 years and grind
Study carefully.But in FRP constraint concrete column, FRP is a kind of passive constraint to the effect of concrete, and the effect of contraction of FRP only has
Competence exertion comes out after concrete compression expands and even generates microcrack, and the effect that transfer FRP needs prodigious deformation,
Even decuple the deformation needed for the effect of contraction of steel tube confined concrete column transfer steel pipe.Some researches show that for GFRP about
When the destruction of beam concrete column inner concrete is happened at the GFRP strengths of materials and performs to 40%-50%.FRP constraint acts on
Hysteresis quality undoubtedly limit FRP effect performance, while play FRP effect needed for large deformation more limit FRP constraint
The use of concrete column.And when using self-compacting concrete, the big spy of the shrinkage of self-compacting concrete in maintenance processes
Property more exacerbates this phenomenon.In order to solve this problem, someone applies core concrete by way of tensioning FRP pre-
The mode of stress solves, but this method is not only constructed complexity, and prestressed anchor and construction cost are higher, gives practical application
Bring certain difficulty.
Invention content
In order to overcome the problems, such as that prior art exists, it is an object of the present invention to provide a kind of FRP pipes to constrain self-stressing concretes
Coupled column.The coupled column using self-stressing concretes not only can be by the expansion compensation concrete of concrete contraction and Xu
Become, and prestressing force can be established in FRP and concrete, avoids the Stress resort of FRP, give full play to the high-strength effects of FRP,
In addition, the prestressing force in concrete also can make inside concrete more closely knit.
In order to achieve the above-mentioned object of the invention, in the presence of solving the problems, such as prior art, technical solution that the present invention takes
It is：A kind of FRP pipes constraint self-stressing concretes coupled column includes the self-stressing concretes of external FRP pipe and inside, described
FRP pipes wrap up self-stressing concretes, and seif-citing rate is generated by the expansion and constraining in FRP pipes and concrete for FRP of concrete,
Steel pipe or shaped steel are laid in the self-stressing concretes, and through the top of self-stressing concretes to bottom, or close
Equally distributed longitudinal stress muscle is laid on the periphery of self-stressing concretes, and through the top of the self-stressing concretes bottom of to
Portion.
The section of the FRP pipes constraint self-stressing concretes coupled column is selected from one kind round, in rectangular or square.
The one kind of the shaped steel in I-shaped, H-type or cross-shaped steel.
FRP pipe selected from cast, glass fiber reinforced plastic tubes, carbon fibre reinforced plastic pipe, aromatic polyamide fiber reinforced plastics pipe or
One kind in FRP multiple tubes.
The one kind of the longitudinal stress muscle in reinforcing bar or FRP tendons.
The one kind of the FRP multiple tubes in FRP-PVC multiple tubes or FRP- steel pipes.
Present invention has the advantages that：A kind of FRP pipes constrain self-stressing concretes coupled column, including external FRP pipes and interior
The self-stressing concretes in portion, the FRP pipes wrap up self-stressing concretes, are managed by the expansion of concrete and the FRP that constrains in of FRP
With seif-citing rate is generated in concrete, lay steel pipe or shaped steel in the self-stressing concretes, and through self-stressing concretes
Top laying equally distributed longitudinal stress muscle to bottom, or on the periphery close to self-stressing concretes, and through from
The top of prestressed concrete to bottom.Compared with the prior art, the present invention can be by the expansion of concrete in FRP and concrete
Prestressing force is established, the Stress resort of FRP is avoided, gives full play to the high-strength effects of FRP, while keeping concrete more closely knit, is improved
The mechanical property of FRP constraint concrete column, and construction is simple, it is of low cost, it can be used for bridge and civil buildings.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the schematic cross-section of the present invention with reinforcing bar.
Fig. 3 is the schematic cross-section of the present invention with steel pipe.
Fig. 4 is the schematic cross-section of the present invention with i shaped steel.
Fig. 5 is the schematic cross-section of the present invention using FRP-PVC multiple tubes or FRP- steel pipes.
In figure：1, FRP is managed, and 2, self-stressing concretes, 3, reinforcing bar, 4, steel pipe, 5, i shaped steel, 6, FRP-PVC multiple tubes
Or FRP- steel pipes.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of FRP pipes constrain self-stressing concretes coupled column, including external FRP pipes 1 and it is internal from
Prestressed concrete 2, the FRP pipes 1 wrap up self-stressing concretes 2, by concrete expansion and FRP constrain in FRP pipe and
Seif-citing rate is generated in concrete, the section of the FRP pipes constraint self-stressing concretes coupled column is selected from round, rectangular or square
In one kind, the FRP pipes 1 be selected from cast, glass fiber reinforced plastic tubes, carbon fibre reinforced plastic pipe or aromatic polyamide fiber reinforced plastics
One kind in pipe.
As shown in Fig. 2, this is a schematic cross-section of the present invention for carrying reinforcing bar.In the week close to self-stressing concretes 2
While equally distributed reinforcing bar 3 is laid, and through the top of self-stressing concretes 2 to bottom, the bending resistance for enhancing component
Ability, then wrapped up self-stressing concretes 2 with FRP pipes 1.
As shown in figure 3, this is a schematic cross-section of the present invention for carrying steel pipe.It is laid in self-stressing concretes 2
Steel pipe 4, and through the top of self-stressing concretes 2 to bottom, then wrapped up self-stressing concretes 2 with FRP pipes 1, it is external
Jointly on the one hand constraint self-stressing concretes 2, built-in steel pipe 4 can enhance the bending resistance of component for FRP pipes 1 and internal steel pipe 4
Ability improves the whole ductility of component, on the other hand can mitigate the dead weight of structure, but also conveniently connect with other components, just
In construction.
As shown in figure 4, this is a schematic cross-section of the present invention for carrying i shaped steel.Pacify in self-stressing concretes 2
It is placed with i shaped steel 5, and through the top of self-stressing concretes 2 to bottom, axial direction and bending resistance for improving coupled column are held
Power and anti-seismic performance are carried, then is wrapped up self-stressing concretes 2 with FRP pipes 1.
As shown in figure 5, this is a schematic cross-section of the present invention for using FRP-PVC multiple tubes or FRP- steel pipes.
Self-stressing concretes 2 is wrapped up using FRP-PVC multiple tubes or FRP- steel pipes 6, the ductility for improving coupled column and axis
To and anti-bending bearing capacity.
The invention has the advantages that：A kind of FRP pipes constraint self-stressing concretes coupled column can be managed in FRP and be built in concrete
Vertical prestressing force, avoids FRP Stress resorts, while making more closely knit concrete, construction is simple, of low cost, is remarkably improved group
The axial anti-bending bearing capacity and anti-seismic performance of zygostyle.
Claims (1)
1. a kind of FRP pipes constrain self-stressing concretes coupled column, including external FRP pipes and internal self-stressing concretes,
It is characterized in that：The FRP pipes wrap up self-stressing concretes, by the contraction of the expansion compensation concrete of self-stressing concretes and
It creeps, and since the expansion of concrete and constraining in FRP pipes and concrete for FRP generate seif-citing rate, avoids the stress of FRP stagnant
Afterwards, the high-strength effects of FRP are given full play to, the prestressing force in concrete also can make inside concrete more closely knit in addition, improve FRP
The mechanical property of confined concrete models, and construction is simple, it is of low cost, it can be used for bridge and civil buildings；The seif-citing rate is mixed
Steel pipe, shaped steel can be laid in solidifying soil or lay equally distributed longitudinal stress muscle on the periphery close to self-stressing concretes,
Steel pipe is laid in the self-stressing concretes, and through the top of seif-citing rate coagulation to bottom, then with FRP pipes by seif-citing rate
Concrete wraps up, and external FRP pipes and internal steel pipe constrain self-stressing concretes jointly, built-in steel pipe, on the one hand can be with
The bending resistance for enhancing component improves the whole ductility of component, on the other hand can mitigate the dead weight of structure, but also conveniently with
Other components connect, convenient for construction；The one kind of the longitudinal stress muscle in reinforcing bar or FRP tendons, close to seif-citing rate coagulation
Equally distributed reinforcing bar is laid on the periphery of soil, and through the top of self-stressing concretes to bottom, for enhancing component
Bending resistance, then wrapped up self-stressing concretes with FRP pipes；The shaped steel in I-shaped, H-type or cross-shaped steel one
Kind, i shaped steel is laid in self-stressing concretes, and through the top of self-stressing concretes to bottom, for improving group
The axial direction and anti-bending bearing capacity and anti-seismic performance of zygostyle, then wrapped up self-stressing concretes with FRP pipes；The FRP pipes are selected from glass
One kind in glass fibre reinforced plastic tube, carbon fibre reinforced plastic pipe, aromatic polyamide fiber reinforced plastics pipe or FRP multiple tubes, it is described
The one kind of FRP multiple tubes in FRP-PVC multiple tubes or FRP- steel pipes, it is multiple using FRP-PVC multiple tubes or FRP- steel
It closes pipe to wrap up self-stressing concretes, the ductility and axial direction for improving coupled column and anti-bending bearing capacity；The FRP pipes constraint is certainly
The section of prestressed concrete coupled column is selected from one kind round, in rectangular or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610453148.XA CN106013615B (en) | 2016-06-21 | 2016-06-21 | A kind of FRP pipes constraint self-stressing concretes coupled column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610453148.XA CN106013615B (en) | 2016-06-21 | 2016-06-21 | A kind of FRP pipes constraint self-stressing concretes coupled column |
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| CN106013615A CN106013615A (en) | 2016-10-12 |
| CN106013615B true CN106013615B (en) | 2018-09-04 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503470A (en) * | 2017-05-26 | 2017-12-22 | 广东工业大学 | A kind of pre-stress FRP sleeve FRP tendons sea sand seawater expansive concrete coupled column |
| CN107366386A (en) * | 2017-08-08 | 2017-11-21 | 广东工业大学 | A kind of multitube confined concrete double-walled open tubular column and production technology |
| 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 |
| CN108240071A (en) * | 2017-12-29 | 2018-07-03 | 沈阳建筑大学 | FRP section bars-steel pipe concrete combination column |
| CN109024250A (en) * | 2018-09-30 | 2018-12-18 | 浙江大学城市学院 | A kind of exposed foot joint and its construction method of composite bridge pier stud |
| CN110359724A (en) * | 2019-07-10 | 2019-10-22 | 太原理工大学 | A kind of artificial tree dry fibers concrete beam column structure |
| CN111119409B (en) * | 2019-12-30 | 2022-03-04 | 扬州大学 | Prestressed steel pipe constraint steel concrete column and preparation method thereof |
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|---|---|---|---|---|
| CN102628305A (en) * | 2012-04-28 | 2012-08-08 | 武汉大学 | Production process of novel concrete-filled steel tube composite structure |
| CN104453092A (en) * | 2014-12-02 | 2015-03-25 | 深圳大学 | Novel FRP pipe-lightweight concrete-structural steel combined member |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202831403U (en) * | 2012-10-16 | 2013-03-27 | 浙江树人大学 | FRP (fiber reinforce plastic) pipe-concrete-steel pipe combination column |
| CN203080800U (en) * | 2013-01-22 | 2013-07-24 | 浙江宇业建设工程有限公司 | FRP (Fiber Reinforce Plastic)-concrete-steel tube hollow column |
| CN203905298U (en) * | 2014-05-28 | 2014-10-29 | 中南大学 | Superimposed component of reinforced concrete filled FRP pipe and concrete filled steel pipe |
| US9580908B2 (en) * | 2014-11-12 | 2017-02-28 | King Saud University | Fiber reinforced composite system for strengthening of wall-like RC columns and methods for preparing such system |
| CN105201143A (en) * | 2015-10-16 | 2015-12-30 | 沈阳建筑大学 | Carbon fiber thin-wall steel tube concrete composite column with internal FRP sectional material and method |
| CN205742749U (en) * | 2016-06-21 | 2016-11-30 | 大连理工大学 | A kind of FRP pipe constraint self-stressing concretes coupled column |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628305A (en) * | 2012-04-28 | 2012-08-08 | 武汉大学 | Production process of novel concrete-filled steel tube composite structure |
| CN104453092A (en) * | 2014-12-02 | 2015-03-25 | 深圳大学 | Novel FRP pipe-lightweight concrete-structural steel combined member |
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