CN107217788A - Full FRP muscle enhancing ECC Combined concrete beams and preparation method thereof - Google Patents
Full FRP muscle enhancing ECC Combined concrete beams and preparation method thereof Download PDFInfo
- Publication number
- CN107217788A CN107217788A CN201710299894.2A CN201710299894A CN107217788A CN 107217788 A CN107217788 A CN 107217788A CN 201710299894 A CN201710299894 A CN 201710299894A CN 107217788 A CN107217788 A CN 107217788A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
- E04C5/073—Discrete reinforcing elements, e.g. fibres
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
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Abstract
The present invention provides a kind of full FRP muscle enhancing ECC Combined concrete beams and preparation method thereof, and FRP muscle is combined with high ductility cement-base composite material ECC and concrete.The present invention includes ECC layers, the concrete layer on top and the FRP muscles and bones framves of bottom, FRP muscles and bones frame erects FRP muscle by longitudinal tensile FRP muscle, FRP muscle stirrup, FRP muscle abdomen muscle and longitudinal direction and constituted, longitudinal tensile FRP muscle is positioned over beam bottom and on the inside of FRP muscle stirrup, FRP ledges studs are positioned at the top of beam and on the inside of FRP muscle stirrup, and FRP muscle abdomen muscle is placed in the middle part of beam and depends on the inner side of FRP muscle stirrups；Longitudinal tensile FRP muscle, FRP ledges stud, FRP muscle abdomens muscle are respectively together with FRP muscle stirrup colligations.The present invention has the advantages that ductility is good, energy dissipation capacity by force, excellent in durability, from heavy and light, the beam that can be applied in building, bridge, Accommodation.
Description
Technical field
The invention belongs to build, bridge, port engineering field, and in particular to a kind of full FRP muscle enhancing ECC- coagulation local soil types
Close beam.
Background technology
At present, what the endurance issues of reinforced concrete structural element were that field of civil engineering receives much concern worldwide asks
Topic.Wherein, steel bar corrosion is to influence one of most important factor of structural elements endurance issues.Steel bar corrosion easily causes structure
Component occurs damaging and performance degradation too early, reduces the bearing capacity of structural elements, the safety of structural elements can be influenceed when serious
Property and service life, the security of the lives and property to the people bring huge loss.
FRP muscle is the composite reinforcing material formed by matrix of resin using fiber or fabric as reinforcement.With reinforcing bar phase
Have the advantages that tensile strength height, excellent in durability, light weight, anti-fatigue performance be good, solenoid isolation performance is good than, FRP muscle.
There are research and engineer applied to show, the concrete structure that reinforcing bar or deformed bar are used in adverse circumstances replaced using FRP muscle,
The corrosion of reinforcing bar can be fundamentally solved the problems, such as, structure durability energy and service life is improved, maintenance cost is reduced.However, FRP
Rib reinforced concrete structure still has in place of some shortcomings, is mainly manifested in：(1) brittle FRP muscle and brittle concrete material are played
When expecting compound use, poor ductile performance is shown.(2) modulus of elasticity of FRP muscle is relatively low, configures the concrete structure of FRP muscle
Easily there is excessive deformation and excessive crack width in part, has a strong impact on its normal usage energy.Excessive cracking crack makes FRP again
Muscle is exposed in rugged environment, triggers new endurance issues.(3) the compatibility of deformation ability between FRP muscle and concrete,
Interfacial adhesion failure is easily caused after concrete cracking, causes the generation of crack along bars, Surface layer's concrete peeling is further exacerbated by, very
To the fracture for causing FRP muscle.
ECC materials be a kind of fiber volume volume be only 2% or so novel super-high ductility fibre reinforced cement base be combined
Material.ECC materials show multiple crackses cracking and strain hardening characteristic, such as its limit is drawn should when tensile load is acted on
Change can reach 0.02-0.06, be 300-500 times of concrete；Crack width is at 60 μm or so, and crackle gap is 3-6mm.ECC
Material has superior ductility and micro-crack control ability, during with FRP muscle compound uses, can not only coordinate to become with FRP muscle
Shape, makes full use of the high-strength characteristic of FRP muscle, but also can control crack width, improves bearing capacity, the ductility of structure
Energy and durability.
The content of the invention
It is an object of the invention to for above-mentioned normal reinforced concrete beam in the prior art and FRP rib reinforced concrete beams
It is not enough there is provided a kind of full FRP muscle enhancing ECC- Combined concrete beams and preparation method thereof, by the FRP muscle of superior performance
Combined with high ductility cement-base composite material ECC and concrete.
The technical proposal of the invention is realized in this way：A kind of full FRP muscle enhancing ECC- Combined concrete beams, including
The ECC layers of bottom and the concrete layer on top, in addition to FRP muscles and bones framves, FRP muscles and bones frame is by longitudinal tensile FRP muscle, FRP muscle hoops
Muscle, FRP muscle abdomen muscle and longitudinal direction erect FRP muscle composition, and longitudinal tensile FRP muscle is positioned over beam bottom and positioned at FRP muscle stirrups
Inner side, FRP ledges studs are positioned at the top of beam and on the inside of FRP muscle stirrup, and FRP muscle abdomen muscle is placed in the middle part of beam
And depend on the inner side of FRP muscle stirrups；Longitudinal tensile FRP muscle, FRP ledges stud, FRP muscle abdomens muscle are tied up with FRP muscle stirrups respectively
Bind together.
The concrete layer is the concrete that strength grade is more than C30, and ECC layers are that strength grade is more than C30
ECC。
ECC layers and concrete layer are rectangle or T-shaped after combining.
Described ECC layers is a kind of fiber reinforced cement-based composite material of fiber volume volume 2%.
The fiber is at least one of PVA fibers, PP fibers, PE fibers.
The FRP muscle is at least one of BFRP muscle, CFRP muscle, AFRP muscle or GFRP muscle.
A kind of full FRP muscle strengthens the preparation method of ECC- Combined concrete beams, carries out in the following manner：
(1) required to make template according to sectional dimension；
(2) colligation FRP muscles and bones frame；
(3) ECC materials are poured according to size requirement；
(4) after ECC materials are pre-hardening, casting concrete, and conserved.
The full FRP muscle enhancing ECC- Combined concrete beams of the present invention, with ductility is good, energy dissipation capacity is strong, durability
Can it is good, from heavy and light the advantages of, the beam that can be applied in building, bridge, Accommodation.
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 accompanying drawing used required in technology description to be briefly described, it is therefore apparent that drawings in the following description are only this hair
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is beams of rectangular cross section member cross-sections schematic diagram.
Fig. 2 is T section combination beam member cross-sections schematic diagram.
In figure：1st, ECC layers；2nd, concrete layer；3rd, FRP muscle stirrup；4th, longitudinal tensile FRP muscle；5th, longitudinal direction erects FRP muscle；
6th, FRP muscle abdomen muscle.
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 paid
Embodiment, belongs to the scope of protection of the invention.
As illustrated in fig. 1 and 2, a kind of full FRP muscle enhancing ECC- Combined concrete beams, including the ECC layers 1 of bottom and upper
The concrete layer 2 in portion, in addition to FRP muscles and bones framves, FRP muscles and bones frame is by longitudinal tensile FRP muscle 4, FRP muscle stirrup 3, FRP muscle abdomens muscle 6
And longitudinal direction erects FRP muscle 5 and constituted, longitudinal tensile FRP muscle 4 is positioned over beam bottom and positioned at the inner side of FRP muscle stirrup 3 and therewith
Colligation together, FRP ledges stud 5 be positioned at the top of beam and positioned at the inner side of FRP muscle stirrup 3 and therewith colligation together,
FRP muscle abdomens muscle 6 is placed in the middle part of beam and depends on the inner side of FRP muscle stirrup 3 and colligation is together therewith.
The concrete layer 2 is the concrete that strength grade is more than C30, and ECC layers 1 are that strength grade is more than C30
ECC。
The beam that ECC layers 1 and concrete layer 2 are formed after combining is rectangle or T-shaped.
Described ECC layers 1 be one kind using materials such as cement, sand, mineral admixtures as matrix, using random distribution chopped fiber as
The superelevation ductility fiber reinforced cement-based composite material of toughening material, fiber volume volume is 2% or so, special with strain hardening
Property and micro-crack control function.The fiber includes the one or several kinds in PVA fibers, PP fibers, PE fibers.Described
FRP muscle includes BFRP muscle, CFRP muscle, AFRP muscle or GFRP muscle.
Compared with prior art, the present invention has advantages below：(1) FRP muscles and bones frame and ECC material weights are light, for group
It can effectively mitigate the deadweight of combined member when closing component, be conducive to structural elements to develop to large span direction.(2) ECC materials
With superior ductility, when it is used for the bottom tensile region of combined member, and during with FRP muscles and bones frame compound uses, Ke Yichong
The high-strength characteristic of FRP muscles and bones framves, effectively save material are waved in distribution.And the fiber-bridged effect of ECC materials and microcrack are opened
The mechanism split, can avoid occurring Girder with Shear Lag Effect between ECC materials and longitudinal tensile FRP muscle, prevent interface from occurring bond damage
The even fracture of FRP muscle, improves the overall performance of structural elements.(3) ECC materials have superior cracking resistance and micro-crack control
Ability processed, when it is used for the bottom tensile region of combined member, can not only improve bending rigidity, the bending resistance carrying of structural elements
Power, shear-carrying capacity and anti-seismic performance, or even change the failure mode of structural elements, it is changed into ductility by brittle break and break
It is bad；And can also effectively the cracking height of control combination component crackle and cracking width, improve structural elements endurance quality, drop
Low deterioration rate.(4) FRP muscle decay resistance is superior, is remarkably improved in adverse circumstances the durability of structural elements and uses
In the life-span, reduce maintenance cost.(5) FRP muscle solenoid isolation is good, available in some unique constructions.
Full FRP muscle of the present invention strengthens the preparation method of ECC- Combined concrete beams, is in the following manner
Carry out：
(1) required to make template according to sectional dimension；
(2) colligation FRP muscles and bones frame；
(3) the ECC materials of certain altitude are poured according to size requirement；
(4) after ECC materials are pre-hardening, casting concrete, and conserved.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (7)
1. a kind of full FRP muscle enhancing ECC- Combined concrete beams, include the ECC layers (1) and the concrete layer on top of bottom
(2), it is characterised in that：Also include FRP muscles and bones framves, FRP muscles and bones frame is by longitudinal tensile FRP muscle (4), FRP muscle stirrup (3), FRP muscle
Abdomen muscle (6) and longitudinal direction erect FRP muscle (5) composition, and longitudinal tensile FRP muscle (4) is positioned over beam bottom and positioned at FRP muscle stirrups
(3) inner side, FRP ledges stud (5) is positioned at the top of beam and on the inside of FRP muscle stirrup (3), and FRP muscle abdomen muscle (6) is placed
In the middle part of beam and depend on the inner side of FRP muscle stirrup (3)；Longitudinal tensile FRP muscle (4), FRP ledges stud (5), FRP muscle
Abdomen muscle (6) is respectively together with FRP muscle stirrup (3) colligation.
2. full FRP muscle enhancing ECC- Combined concrete beams according to claim 1, it is characterised in that：The coagulation
Soil layer (2) is the concrete that strength grade is more than C30, and ECC layers (1) are the ECC that strength grade is more than C30.
3. full FRP muscle enhancing ECC- Combined concrete beams according to claim 1, it is characterised in that：ECC layers (1)
It is rectangle or T-shaped after being combined with concrete layer (2).
4. full FRP muscle enhancing ECC- Combined concrete beams according to claim 1, it is characterised in that：It is described ECC layers
(1) be a kind of fiber volume volume be 2% fiber reinforced cement-based composite material.
5. full FRP muscle enhancing ECC- Combined concrete beams according to claim 4, it is characterised in that：The fiber
It is at least one of PVA fibers, PP fibers, PE fibers.
6. full FRP muscle enhancing ECC- Combined concrete beams according to claim 1, it is characterised in that：The FRP muscle
It is at least one of BFRP muscle, CFRP muscle, AFRP muscle or GFRP muscle.
7. a kind of full FRP muscle strengthens the preparation method of ECC- Combined concrete beams, it is characterised in that be in the following manner
Carry out：
(1) required to make template according to sectional dimension；
(2) colligation FRP muscles and bones frame；
(3) ECC materials are poured according to size requirement；
(4) after ECC materials are pre-hardening, casting concrete, and conserved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299894.2A CN107217788A (en) | 2017-04-28 | 2017-04-28 | Full FRP muscle enhancing ECC Combined concrete beams and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299894.2A CN107217788A (en) | 2017-04-28 | 2017-04-28 | Full FRP muscle enhancing ECC Combined concrete beams and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN107217788A true CN107217788A (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710299894.2A Pending CN107217788A (en) | 2017-04-28 | 2017-04-28 | Full FRP muscle enhancing ECC Combined concrete beams and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605103A (en) * | 2017-10-08 | 2018-01-19 | 华东交通大学 | A kind of FRP tendons reinforcing bar composite strengthening ECC/ concrete combination columns |
| CN107965092A (en) * | 2018-01-09 | 2018-04-27 | 淮海工学院 | FRP tendons-FRP grids-cement base grout material combined member and production method |
| CN108824696A (en) * | 2018-06-14 | 2018-11-16 | 同济大学 | A kind of FRP tendons seawater sea sand-UHDCC composite beam and its construction method |
| CN109868937A (en) * | 2017-12-05 | 2019-06-11 | 上海同吉建筑工程设计有限公司 | The prestressed concrete superposed beam and its design of post-tensioning soap-free emulsion polymeization, construction method |
| RU189913U1 (en) * | 2018-11-12 | 2019-06-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" (ВГТУ) | LAYERED FIBROCATON BEAM |
| CN110441174A (en) * | 2019-07-09 | 2019-11-12 | 郑州大学 | A method of strain hardening soil fatigue damage determines under research circulation dynamic load |
| CN111456321A (en) * | 2020-05-25 | 2020-07-28 | 郑州大学 | FRP (fiber reinforced plastic) concrete beam with compression area having high ductility |
| CN112277154A (en) * | 2020-10-28 | 2021-01-29 | 广东中建新型建筑构件有限公司 | Production method of FRP rib precast beam |
| US11313126B2 (en) * | 2020-04-27 | 2022-04-26 | Tuf-N-Lite, LLC | Concrete corner structure with diagonally oriented fiber resin polymer rebar |
| CN115012581A (en) * | 2022-06-08 | 2022-09-06 | 商丘师范学院 | Fiber reinforced composite material reinforced concrete beam member and preparation method thereof |
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| CN103938803A (en) * | 2014-04-04 | 2014-07-23 | 浙江大学 | High toughness cement-based material-nonmetal fiber rib composite structure as well as application and application method thereof |
| CN104251035A (en) * | 2014-09-26 | 2014-12-31 | 郑州大学 | FRP (Fiber Reinforced Plastic) bar and fiber high-strength concrete beam component |
| CN105464288A (en) * | 2016-01-18 | 2016-04-06 | 东南大学 | Composite bar-reinforced ECC and concrete composite beam and construction method thereof |
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Patent Citations (3)
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| CN103938803A (en) * | 2014-04-04 | 2014-07-23 | 浙江大学 | High toughness cement-based material-nonmetal fiber rib composite structure as well as application and application method thereof |
| CN104251035A (en) * | 2014-09-26 | 2014-12-31 | 郑州大学 | FRP (Fiber Reinforced Plastic) bar and fiber high-strength concrete beam component |
| CN105464288A (en) * | 2016-01-18 | 2016-04-06 | 东南大学 | Composite bar-reinforced ECC and concrete composite beam and construction method thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605103A (en) * | 2017-10-08 | 2018-01-19 | 华东交通大学 | A kind of FRP tendons reinforcing bar composite strengthening ECC/ concrete combination columns |
| CN109868937A (en) * | 2017-12-05 | 2019-06-11 | 上海同吉建筑工程设计有限公司 | The prestressed concrete superposed beam and its design of post-tensioning soap-free emulsion polymeization, construction method |
| CN107965092A (en) * | 2018-01-09 | 2018-04-27 | 淮海工学院 | FRP tendons-FRP grids-cement base grout material combined member and production method |
| CN108824696A (en) * | 2018-06-14 | 2018-11-16 | 同济大学 | A kind of FRP tendons seawater sea sand-UHDCC composite beam and its construction method |
| RU189913U1 (en) * | 2018-11-12 | 2019-06-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" (ВГТУ) | LAYERED FIBROCATON BEAM |
| CN110441174A (en) * | 2019-07-09 | 2019-11-12 | 郑州大学 | A method of strain hardening soil fatigue damage determines under research circulation dynamic load |
| CN110441174B (en) * | 2019-07-09 | 2022-02-15 | 郑州大学 | Method for judging fatigue damage of strain hardening soil under research of cyclic dynamic load |
| US11313126B2 (en) * | 2020-04-27 | 2022-04-26 | Tuf-N-Lite, LLC | Concrete corner structure with diagonally oriented fiber resin polymer rebar |
| CN111456321A (en) * | 2020-05-25 | 2020-07-28 | 郑州大学 | FRP (fiber reinforced plastic) concrete beam with compression area having high ductility |
| CN112277154A (en) * | 2020-10-28 | 2021-01-29 | 广东中建新型建筑构件有限公司 | Production method of FRP rib precast beam |
| CN115012581A (en) * | 2022-06-08 | 2022-09-06 | 商丘师范学院 | Fiber reinforced composite material reinforced concrete beam member and preparation method thereof |
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