CN201649444U - Novel prestressed composite FRP reinforcing bar - Google Patents

Novel prestressed composite FRP reinforcing bar Download PDF

Info

Publication number
CN201649444U
CN201649444U CN2010201731961U CN201020173196U CN201649444U CN 201649444 U CN201649444 U CN 201649444U CN 2010201731961 U CN2010201731961 U CN 2010201731961U CN 201020173196 U CN201020173196 U CN 201020173196U CN 201649444 U CN201649444 U CN 201649444U
Authority
CN
China
Prior art keywords
frp
reinforcing bar
muscle
strength concrete
reinforced plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010201731961U
Other languages
Chinese (zh)
Inventor
杨勇
邓宇
张鹏
薛建阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian University of Architecture and Technology
Guangxi University of Science and Technology
Original Assignee
Xian University of Architecture and Technology
Guangxi University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian University of Architecture and Technology, Guangxi University of Science and Technology filed Critical Xian University of Architecture and Technology
Priority to CN2010201731961U priority Critical patent/CN201649444U/en
Application granted granted Critical
Publication of CN201649444U publication Critical patent/CN201649444U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to a novel prestressed composite FRP (fiber-reinforced plastic) reinforcing bar used for bridges, water conservancy projects, sea ports and other concrete structures. The FRP reinforcing bar comprises a high-strength concrete prism body and an FRP reinforcing bar, wherein the FRP reinforcing bar is embedded in the high-strength concrete prism body; rib marks are arranged on the two side surfaces of the high-strength concrete prism body and adopt either vertical rib marks perpendicular to the bottom surface of the high-strength concrete prism body or inclined rib marks, and the included angle Alpha between the inclined rib marks and the bottom surface of the high-strength concrete prism body ranges from 30 DEG to 60 DEG; and the FRP reinforcing bar adopts a CFRP (carbon fiber reinforced plastic) reinforcing bar, a GFRP (glass fiber reinforced plastic) reinforcing bar, a BFRP (boron fiber reinforced plastic) reinforcing bar, or an AFRP (aramid fiber reinforced plastic) reinforcing bar. Compared with the common FRP-reinforced concrete, the utility model has the advantages of slower crack expansion, smaller crack width, higher rigidity, strength and drawability of constructional elements, full use of FRP materials, etc; and compared with the common prestressed FRP reinforcing bar, the novel prestressed composite FRP reinforcing bar has the advantages of convenient construction, higher drawability and the like due to the availability for batch prefabrication.

Description

The compound muscle of new type FRP prestressing force
Technical field
The utility model relates in the concrete structures such as a kind of bridge, hydraulic engineering and sea port dock with the compound muscle of new type FRP prestressing force.
Background technology
The corrosion of prestressed reinforcement and plain bars in the concrete structures such as bridge, hydraulic engineering, sea port dock is domestic and international civil engineering field problem of being concerned about and the challenge that faces always.Use the area of ice-removal salt and the area of bordering on the sea in the winter time in a large number, this type of problem is particularly outstanding.Existing engineering practice shows, is the required reinforcing of the normal functional performance that keeps structure and the maintenance cost several times of the cost of structure normally own.
How improving the durability of reinforced concrete structure, the application life that increases them is problem extremely urgent in the civil engineering.Be head it off, people have carried out multiple trial, the Chinese scholars countermeasure that just begun one's study from the sixties in 20th century, and through the exploration and practice of nearly half a century, having developed fibre reinforced plastics (Fiber Reinforced Plastic) is FRP.FRP has tensile strength height, in light weight, self-diagnostic feature, nonmagnetic and do not have a good characteristic such as corrosion row, and the FRP bar can be made the shape of plain bars, thereby the FRP muscle is considered to a kind of good substitution material of prestressed reinforcement and plain bars in the prestressed reinforced concrete construction, becomes at present one of research focus of field of civil engineering both at home and abroad.At present, existing in the world many countries and regions are applied to the FRP muscle in the civil engineering, especially in some adverse circumstances, FRP has demonstrated wide application prospect, and therefore the Study on behavior to the FRP tendon concrete structure has important in theory meaning and real value.
Most fibrous material is compared the tensile strength height with steel, modulus of elasticity is low.Because modulus of elasticity is low, during FRP reinforced concrete flexural member cracking, the member section natural axis rapid on move, cause stiffness of structural member to reduce, companion's and be the reduction of member amount of deflection and the increase of crack width.The quantity of reinforcement that increases the FRP muscle in cross section is to improve the member amount of deflection, satisfies the safety requirements of design specifications.Yet this will mean that FRP muscle use cost is too high.In addition, the sectional reinforcement rate is too high, and the high-tensile characteristics of FRP muscle can not fully be utilized in design.
The utility model content
The technical problems to be solved in the utility model is: provide a kind of have delay crack developing, reduce crack width, improve stiffness of structural member, increase component strength, improve member ductility and make full use of the compound muscle of new type FRP prestressing force of advantages such as FRP material, to solve the weak point that exists in the above-mentioned present technology.
The technical scheme that solves the problems of the technologies described above is: the compound muscle of a kind of new type FRP prestressing force, comprise high-strength concrete prism and FRP muscle, and the FRP muscle is imbedded in the high-strength concrete prism, and high-strength concrete prism two sides also are provided with the rib line.
Described rib line or the perpendicular rib line vertical or form the diagonal rib line of 30~60 ° of angle α with high-strength concrete prism bottom surface with high-strength concrete prism bottom surface.
Described FRP muscle is CFRP muscle, GFRP muscle, BFRP muscle or AFRP muscle.
A kind of novel pre-stressed FRP muscle technology that the utility model is invented in order effectively to utilize pre-stress FRP reinforced concrete excellent performance advantage and convenient construction just, the compound muscle of new type FRP prestressing force (also can be described as the compound muscle of FRP-PCPs) is meant heeling-in pre-stress FRP muscle in the less high-strength concrete prism (PCPs) in cross section, after treating that concrete reaches design strength, pre-stress FRP muscle and high-strength concrete prism have been combined to form the less compound muscle of new type FRP prestressing force that is suitable for axial tension of sectional dimension mutually.The compound muscle of this new type FRP prestressing force can be used as principal rod and directly builds tensile zone in various concrete components (beam, plate etc.), has promptly formed a kind of new type FRP prestressed concrete member---the compound muscle structure of new type FRP prestressing force.
Compare with common FRP reinforced concrete, the utlity model has and delay crack developing, reduce crack width, improve stiffness of structural member, increase component strength, improve member ductility and make full use of advantages such as FRP material, simultaneously because the compound muscle of new type FRP prestressing force can be prefabricated in batches, compare with common pre-stress FRP muscle, the compound muscle of new type FRP prestressing force also has advantages such as easy construction and ductility is better, and because the compound muscle of new type FRP prestressing force can carry out prefabrication and customization, the fabricating quality of compound muscle and mechanical property can obtain strict control.Be provided with the rib line in high-strength concrete prism two sides, having increased by two side rib lines can increase the roughness coefficient of FRP-PCPs muscle and surrounding concrete, improve the frictional force between the concrete, thus the cracking resistance ability of having strengthened the adhesion strength of the compound muscle of new type FRP prestressing force and surrounding concrete and having improved the compound rib component of new type FRP prestressing force with.Therefore, the compound muscle of new type FRP prestressing force of the utility model has good Research Significance and popularizing application prospect as a kind of innovation structure technology in conjunction with new material and prestressing technique.
Because the compound muscle of new type FRP prestressing force has above-mentioned advantage, the utility model has the applications well prospect in following range of application: (1) is used for the bridge deck of newly-built concrete-bridge; (2) be used for the bridge floor beam of newly-built concrete-bridge; (3) the compound muscle of new type FRP prestressing force is embedded in (NSM) reinforced concrete bridge deck, the bridge floor beam on the top layer as embedding muscle; (4) be used for the newly-built and stabilization works that other needs the concrete beam board member of increased durability.Wherein, because in concrete slab, need not stirrup, only join the vertical muscle of unidirectional tension, to characteristics such as be subjected to that lacing wire durability and fatigue behaviour are had relatively high expectations, adopt the compound muscle of new type FRP prestressing force to indulge the performance advantage that the compound reinforced concrete bridge deck of the formed new type FRP prestressing force of muscle can have been given play to the compound muscle of new type FRP prestressing force fully, in China's cold district and equal tool wide application prospect of the coastal south and promotional value as tension in the bridge deck.
Below, the technical characterictic to the compound muscle of new type FRP prestressing force of the utility model is further described in conjunction with the accompanying drawings and embodiments.
Description of drawings
Fig. 1~Fig. 3: the utility model embodiment one structural representation:
Fig. 1: stereogram, Fig. 2: front view, Fig. 3: right view.
Fig. 4~Fig. 6: the utility model embodiment two structural representations:
Fig. 4: stereogram, Fig. 5: front view, Fig. 6: right view.
Among the figure:
The 1-FRP muscle, 2-high-strength concrete prism, 31-erects rib line, 32-diagonal rib line.
The specific embodiment
Embodiment one:
The compound muscle of a kind of new type FRP prestressing force is (referring to Fig. 1~Fig. 3), comprise high-strength concrete prism 2 and FRP muscle 1, FRP muscle 1 is imbedded in the less high-strength concrete prism 2 in cross section, and high-strength concrete prism two sides also are provided with the perpendicular rib line 31 vertical with high-strength concrete prism bottom surface.
Embodiment two:
The compound muscle of a kind of new type FRP prestressing force is (referring to Fig. 4~Fig. 6), comprise high-strength concrete prism 2 and FRP muscle 1, FRP muscle 1 is imbedded in the less high-strength concrete prism 2 in cross section, and high-strength concrete prism two sides also are provided with the diagonal rib line 32 that forms 46 ° of angle α with high-strength concrete prism bottom surface.
Do a kind of conversion of present embodiment two, the angle of described angle α can or reduce according to the actual conditions increase, is generally 30~60 °.
The described FRP muscle of each embodiment of the utility model can be CFRP muscle (carbon fibre bar), GFRP muscle (glass fiber muscle), BFRP muscle (basalt fibre muscle) or AFRP muscle (aramid fiber reinforced plastic bars), and the diameter of FRP, prestressing force level are determined according to the actual loading of primary structure member.The utility model sectional dimension is determined according to the engineering actual conditions.

Claims (3)

1. compound muscle of new type FRP prestressing force, it is characterized in that: comprise high-strength concrete prism and FRP muscle, the FRP muscle is imbedded in the high-strength concrete prism, and high-strength concrete prism two sides also are provided with the rib line.
2. the compound muscle of new type FRP prestressing force according to claim 1 is characterized in that: described rib line or the perpendicular rib line vertical with high-strength concrete prism bottom surface or form the diagonal rib line of 30~60 ° of angle α with high-strength concrete prism bottom surface.
3. the compound muscle of new type FRP prestressing force according to claim 1 and 2 is characterized in that: described FRP muscle is CFRP muscle, GFRP muscle, BFRP muscle or AFRP muscle.
CN2010201731961U 2010-04-28 2010-04-28 Novel prestressed composite FRP reinforcing bar Expired - Fee Related CN201649444U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201731961U CN201649444U (en) 2010-04-28 2010-04-28 Novel prestressed composite FRP reinforcing bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201731961U CN201649444U (en) 2010-04-28 2010-04-28 Novel prestressed composite FRP reinforcing bar

Publications (1)

Publication Number Publication Date
CN201649444U true CN201649444U (en) 2010-11-24

Family

ID=43114673

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201731961U Expired - Fee Related CN201649444U (en) 2010-04-28 2010-04-28 Novel prestressed composite FRP reinforcing bar

Country Status (1)

Country Link
CN (1) CN201649444U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104458402A (en) * 2014-12-13 2015-03-25 广西科技大学 Method for manufacturing specimen containing CFRP-PCPs (carbon fiber reinforced polymer-prestressed concrete prisms) composite rebars
CN104526869A (en) * 2014-12-13 2015-04-22 广西科技大学 CFRP-PCPs (carbon fiber reinforced polymer-prestressed concrete prisms) composite bar manufacturing process
CN107023072A (en) * 2017-03-08 2017-08-08 北京航空航天大学 FRP carbonated concrete precast assembly combined systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104458402A (en) * 2014-12-13 2015-03-25 广西科技大学 Method for manufacturing specimen containing CFRP-PCPs (carbon fiber reinforced polymer-prestressed concrete prisms) composite rebars
CN104526869A (en) * 2014-12-13 2015-04-22 广西科技大学 CFRP-PCPs (carbon fiber reinforced polymer-prestressed concrete prisms) composite bar manufacturing process
CN107023072A (en) * 2017-03-08 2017-08-08 北京航空航天大学 FRP carbonated concrete precast assembly combined systems

Similar Documents

Publication Publication Date Title
CN201695562U (en) Novel FRP composite rebar concrete slab
CN201952969U (en) Novel FRP (Fiber Reinforced Plastic) prestressed concrete slab
CN101481930B (en) Construction structure for textile reinforced composite reinforced bar concrete and manufacturing method thereof
CN201695573U (en) Novel fiber-reinforced plastic (FRP)-prestressed concrete prisms (PCPs) composite bar concrete beam
CN102383420B (en) High-strength concrete prefabricated pile doped with fiber-reinforced plastic bar
CN104805767A (en) Prefabricated assembly FRP-reinforcing steel-bar-concrete combined bridge deck and construction method
CN103572895B (en) The controlled FRP grid of a kind of crack damage strengthens high-durability steel concrete rod structure
CN1936206A (en) Steel-continuous-fiber composite-rib reinforced concrete earthquake-resisting structure
CN205558037U (en) FRP board - concrete combination beam
CN103194969A (en) FRP (Fiber Reinforce Plastic)-concrete combined bridge deck
CN204589815U (en) Prefabricated assembled FRP-steel-concrete combined bridge deck
CN201043326Y (en) Composite fibre hollow grouting anchoring-bolt
CN201649444U (en) Novel prestressed composite FRP reinforcing bar
CN104746494A (en) Hollow interlining FRP-steel tube sea sand recycled concrete member
Burgoyne Fibre reinforced polymers–strengths, weaknesses, opportunities and threats
CN100570097C (en) A kind of light aggregate concrete beam of corrosion fatigue resistant
CN203160126U (en) FRP-concrete composite bridge panel
CN201043327Y (en) Composite fibre steel anchor stock
CN201952977U (en) Prestressed fiber reinforce plastic (FRP) rebar high-strength concrete board band
CN110056117B (en) Corrugated surface hollow FRP profile sea sand concrete slab structure
CN202000558U (en) Pre-stress fiber resin composite rib
CN111041983A (en) Composite rib-composite material grid seawater sea sand bridge deck
CN209428931U (en) Lightweight steel-coarse aggregate Reactive Powder Concrete combined beam structure
CN203284968U (en) Bamboo plastic composite rib concrete beam
CN109838015B (en) High-shear-resistance concrete shear wall provided with fiber reinforced composite material grid bars

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101124

Termination date: 20110428