CN116464313B - Reinforced concrete flexural reinforcement member and reinforcement method - Google Patents
Reinforced concrete flexural reinforcement member and reinforcement method Download PDFInfo
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- CN116464313B CN116464313B CN202310409785.7A CN202310409785A CN116464313B CN 116464313 B CN116464313 B CN 116464313B CN 202310409785 A CN202310409785 A CN 202310409785A CN 116464313 B CN116464313 B CN 116464313B
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 77
- 230000002787 reinforcement Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 68
- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 31
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 30
- 239000010410 layer Substances 0.000 claims abstract description 29
- 238000004873 anchoring Methods 0.000 claims abstract description 24
- 238000005728 strengthening Methods 0.000 claims abstract description 10
- 239000011241 protective layer Substances 0.000 claims abstract description 7
- 239000004567 concrete Substances 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 239000011208 reinforced composite material Substances 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000003733 fiber-reinforced composite Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011515 fiberglass reinforced plastic grating Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a reinforced concrete flexural strengthening member and a strengthening method, wherein the reinforced member comprises a reinforced concrete flexural member, an FRP composite material, an anchoring component and a UHPC layer; the lower surface of the reinforced concrete flexural member is provided with a plurality of grooves along the length direction or the width direction of the reinforced concrete flexural member; the FRP composite material is semi-embedded in the groove and is fixed through an anchoring component with a specific shape; the UHPC layer is covered below the FRP composite and the anchoring component to form a protective layer. The method is used for constructing the reinforced concrete flexural strengthening member. The semi-embedded FRP composite material is adopted for reinforcement, so that the influence on the original section is reduced, and the bearing capacity and toughness of the reinforced composite material are ensured; the anchoring assembly can prevent the early stripping of the reinforcing structure; through being equipped with UHPC layer effective protection FRP component and original structure reinforcing bar, promote reinforced structure's durability, and reinforced structure aspect is level and beautiful, simple structure, construction convenience.
Description
Technical Field
The invention relates to the technical field of reinforced concrete flexural members, in particular to a reinforced concrete flexural member reinforcing method.
Background
The fiber reinforced composite material (Fiber Reinforced Plastic, FRP for short) is made of reinforced fiber material and has the advantages of high strength, light weight, corrosion resistance, fatigue resistance and the like. These characteristics make FRP materials capable of meeting the requirements of industrial development of modern building construction, so that the FRP materials are increasingly and widely applied to the fields of various civil buildings, bridges, highways, oceans, hydraulic structures, underground structures and the like. With the great development of infrastructure construction, china builds a large number of reinforced concrete structure houses and bridges, and the reinforced concrete structure houses and bridges are subjected to the coupling action of load and environment, so that a plurality of structures are or will step into an aging period and are in a dangerous and old state, and reinforcement and repair are needed. The prior reinforcement method for the reinforced concrete flexural member mainly comprises a bonding steel reinforcement method, an external fiber sheet reinforcement method, a section increasing method and the like. The range of the open hole bar planting of the original structure is reduced, and the reinforcement of the novel fiber reinforced composite material is a new trend.
However, the existing fully embedded reinforcement method weakens the original section, reduces the clear distance of the reinforcement protection layer, and possibly causes cracking of concrete, and reduces the bearing capacity and toughness; the external-adhesion type reinforcing method has the conditions of insufficient adhesion and easy stripping; the reinforcement operation of the perforated bar planting is complicated, and the construction amount is large; most of the implanted bars are steel bars, and the condition that a concrete protection layer is shallow exists during reinforcement, so that the corrosion resistance requirement during reinforcement of concrete cannot be met, and the durability of the concrete is affected. It is therefore desirable to explore a method of reinforcing a reinforced concrete flexural member to overcome the above problems.
Disclosure of Invention
The invention aims to solve the technical problems of poor reinforcement bearing capacity, poor toughness, easy stripping, poor durability and complicated construction of the existing reinforced concrete flexural member.
In order to solve the technical problems, the invention adopts the following technical scheme: a reinforced concrete flexural strengthening member comprises a reinforced concrete flexural member, an FRP composite material, an anchoring component and a UHPC layer; the lower surface of the reinforced concrete flexural member is provided with a plurality of grooves along the length direction or the width direction of the reinforced concrete flexural member; the FRP composite material is semi-embedded in the groove and is fixed through the anchoring component; the UHPC layer is covered below the FRP composite and the anchoring component to form a protective layer.
As a further improvement of the above scheme:
the depth of the groove of the reinforced concrete flexural member is 0.4-0.6 times of the height of the FRP composite material, and the width of the groove is 1.1-1.4 times of the width of the single pipe of the FRP composite material.
The FRP composite material is FRP rib or FRP grid.
The UHPC aggregate particle size of the UHPC layer is smaller than 2mm, and the thickness of the UHPC layer is 15-20mm.
The anchoring assembly comprises a plurality of U-shaped fasteners; the U-shaped fastener is fixedly connected with the reinforced concrete flexural member, and the U-shaped fastener is provided with at least 3 head ends, tail ends and middle parts which are distributed at equal intervals in the length direction of the FRP composite material, so that the FRP composite material is fastened through the U-shaped fastener.
The U-shaped fastener comprises an anchor plate and rivets, wherein small openings are formed in two ends of the anchor plate, and the rivets penetrate through the small openings and are fixedly connected with the reinforced concrete flexural member, so that the FRP composite material is located above the anchor plate and between the rivets on two sides of the anchor plate.
The bulge of the anchoring plate is provided with a preformed hole, and when the anchoring force is insufficient, a small-size rivet is additionally arranged to penetrate through the preformed hole and fixedly connected with the reinforced concrete flexural member.
A reinforced concrete flexural member reinforcing method is used for constructing the reinforced concrete flexural member and comprises the following steps of:
s1, machining grooves: and forming grooves on the lower surface of the reinforced concrete flexural member along the length direction or the width direction of the reinforced concrete flexural member, and cleaning dust.
S2, embedding FRP composite materials: and half-embedding the FRP composite material into the groove.
S3, fixing the FRP composite material: the anchor plate is uniformly provided with a plurality of blocks along the length direction of the reinforced concrete flexural member, and rivets are driven into the concrete through the anchor plate.
S4, pouring the UHPC layer: and pouring UHPC to fill gaps between the grooves and the FRP composite until the gaps are covered on the anchor plate to form a protective layer.
Compared with the prior art, the invention has the advantages that: the invention provides a reinforced concrete flexural strengthening member and a strengthening method, which reduce the influence on the original section by adopting a semi-embedded FRP composite material, reserve the clear distance of a reinforcing steel bar protection layer with more original structures, delay the cracking of concrete and ensure the bearing capacity and toughness of the reinforced concrete; the adhesive can be bonded more effectively, is easy to anchor, and has small influence on the appearance; the anchor assembly can prevent the early stripping of the reinforcing structure, so that the performance of the reinforcing material can be exerted as much as possible, and the reinforcing effect is improved; the UHPC layer is arranged to effectively protect the FRP composite material and the original structural steel bars, so that the durability of the reinforcing structure is improved, and the layer surface of the reinforcing structure is smooth and beautiful; the reinforced concrete bending member has the advantages of simple reinforcing structure, small damage to the reinforced concrete bending member and convenient construction.
Drawings
Fig. 1 is a schematic perspective view of a reinforced concrete flexural strengthening member in accordance with an embodiment of the present invention.
Fig. 2 is a schematic front view of a reinforced concrete flexural reinforcement member in accordance with an embodiment of the present invention.
Fig. 3 is a schematic plan view of a reinforced concrete flexural reinforcement member in accordance with an embodiment of the present invention.
Fig. 4 is a schematic side view of a reinforced concrete flexural reinforcement member in accordance with an embodiment of the invention.
Fig. 5 is a schematic perspective view of a U-shaped fastener according to an embodiment of the present invention.
The reference numerals in the drawings denote: 1. a reinforced concrete flexural member; 11. a groove; 2. a U-shaped fastener; 21. an anchor plate; 22. an opening; 23. a rivet; 3. FRP composite material; 4. UHPC layer.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
Device example:
fig. 1 to 5 show an embodiment of a reinforced concrete flexural strengthening member of the invention comprising a reinforced concrete flexural member 1, an FRP composite 3, an anchor assembly and a UHPC layer 4; the lower surface of the reinforced concrete flexural member 1 is provided with a plurality of grooves 11 along the length direction or the width direction thereof; the FRP composite material 3 is half embedded into the groove 11 and is fixed by the anchoring component; the UHPC layer 4 forms a protective layer covering the FRP composite 3 and the underside of the anchor assembly.
In the structure, the FRP composite material 3 is a member made of fiber reinforced composite material (Fiber Reinforced Plastic, FRP for short), can be processed and formed in a factory, is easy to ensure quality, and has the advantages of high strength, light weight, corrosion resistance, fatigue resistance and the like. The UHPC layer 4 is formed by casting Ultra-high performance concrete (UHPC for short), and has the characteristics of high strength, high rigidity, good durability, strong interfacial adhesion, low permeability and good fire resistance. The FRP composite material 3 is light and thin in appearance, and has little influence on the appearance of the reinforced concrete flexural member 1; the FRP composite material is semi-embedded in the groove, so that compared with a fully-embedded reinforcing method, the semi-embedded reinforcing method has smaller influence on the original section, reserves more clear distance of the reinforcing steel bar protection layer of the original structure, delays concrete cracking, and ensures the bearing capacity and toughness of the concrete; compared with the externally-attached reinforcing method, the semi-embedded reinforcing method can be used for more effectively bonding, enhancing the cooperative stress performance of different materials, being easy to anchor, having less influence on the appearance, isolating the reinforcing rib material from the outside and improving the durability. By arranging the anchoring assembly, the early stripping of the reinforcing structure can be prevented, the performance of the reinforcing material can be exerted as much as possible, and the reinforcing effect is improved. Through being equipped with UHPC layer 4, can protect FRP composite material and original structure reinforcing bar and make FRP composite material 3 and by the reinforcement surface bonding effectual, be difficult for producing peeling off, and can prevent the ageing of FRP composite material 3 well, make reinforced structure whole level and beautiful.
In the embodiment, the depth of the groove 11 of the reinforced concrete flexural member 1 is 0.4-0.6 times of the height of the FRP composite material 3, and the width is 1.1-1.4 times of the single tube width of the FRP composite material 3. In this structure, the depth of the groove 11 of the reinforced concrete flexural member 1 is 8mm, the height of the FRP composite 3 is 16mm, and the width is 20mm. Through this structure, avoid recess 11 to offer too big, cause too much destruction to reinforced concrete flexural member 1, also avoid recess 11 to offer too little, be unfavorable for fastening FRP composite 3, influence reinforced structure's durability.
In this embodiment, the FRP composite 3 is an FRP rib or an FRP grid. In the structure, the section of the FRP rib is larger than the area of the FRP grid, and the bearing capacity is high; the FRP grating is thinner and can provide lateral restraining forces.
In the embodiment, the particle size of the ultra-high performance concrete aggregate of the ultra-high performance concrete layer is not more than 2mm so as to ensure that the slurry can fill gaps among the reinforcing structures; the thickness of the ultra-high performance concrete layer is 15-20mm, so that the FRP composite material and the original structural steel bar can be effectively protected.
In this embodiment, the anchoring assembly comprises a plurality of U-shaped fasteners 2; the U-shaped fastener 2 is fixedly connected with the reinforced concrete flexural member 1, and the U-shaped fastener 2 is provided with at least 3 head and tail ends and the middle parts which are uniformly distributed in the length direction of the FRP composite material 3 at intervals, so that the FRP composite material 3 is fastened through the U-shaped fastener 2. In this structure, through setting up U type fastener 2 at the head, middle part, and the afterbody of FRP composite material 3 and fastening, further form interior anchor structure through UHPC layer 4, reduced the peeling off risk of FRP composite material 3 by a wide margin effectively, further promoted reinforced structure's stability and durability, and simple structure, construction convenience, stable effectual. The U-shaped fasteners 2 are distributed on the key positions of the FRP composite 3 at equal intervals by calculation to ensure the fastening effect on the FRP composite 3, the distance between the U-shaped fasteners 2 at the end of the FRP composite 3 and the end of the FRP composite 3 is not too long, and the distance should be controlled within 20mm to reduce the stripping probability of the end of the FRP composite 3 and ensure the fastening effect; the specific number of the U-shaped fasteners 2 can be properly adjusted by calculating the required anchoring force, but the number of the U-shaped fasteners is not too large, so that unnecessary damage to the reinforced concrete flexural member 1 is avoided, and the durability of the reinforcing structure is reduced.
In this embodiment, the U-shaped fastener 2 includes an anchor plate 21 and rivets 23, both ends of the anchor plate 21 are opened with small openings, and the rivets 23 pass through the small openings to be fixedly connected with the reinforced concrete flexural member 1, so that the FRP composite material 3 is located above the anchor plate 21 and between the rivets 23 on both sides of the anchor plate 21. Through this structure, form U type fastener 2, simple structure, construction is convenient, and fastening effect is good, and is little to the destruction of reinforced concrete flexural member 1. In the structure, the width of the anchoring plate 21 is required to be larger than the whole width of the FRP composite material 3, 30-50 mm is reserved on each side of the anchoring plate 21, so that the rivet 23 can conveniently pass through, and the opening 22 can be arranged in the middle of the short side, so that the stress is balanced, the structural stability is improved, and the damage to the reinforced concrete flexural member 1 is reduced. The anchor plate 21 may be steel or a composite material with better durability.
In this embodiment, the anchor plate 21 is a wave-shaped plate, so that the protrusion of the anchor plate 21 can be attached to the surface of the reinforced concrete flexural member 1 while the anchor plate 21 is fastened to the FRP composite material 3. In this structure, anchor board 21 can be straight board or wave shaped plate, when adopting the wave shaped plate, should make wave shaped plate's pit laminate with FRP composite material 3 mutually, protruding department can laminate with reinforced concrete flexural member 1 surface mutually, can effectively reduce the clearance between anchor board 21 and the reinforced concrete flexural member 1 to further promote reinforced structure's stability and durability.
In this embodiment, the protrusion of the anchoring plate 21 is provided with a preformed hole, and when the anchoring force is insufficient, a small-sized rivet may be added to pass through the preformed hole and be fixedly connected with the reinforced concrete flexural member 1. Through this structure, can be according to actual conditions, directly consolidate FRP composite 3 through addding the rivet when anchor power is not enough, it is less to the reinforced concrete flexural member 1 destruction, reinforcing means's flexibility.
Method embodiment:
the embodiment shows a reinforced concrete flexural member reinforcing method, which adopts the reinforced concrete flexural member 1 to carry out reinforcing, and comprises the following steps:
s1, machining grooves 11: on the lower surface of the reinforced concrete flexural member 1, grooves 11 are opened in the length direction or the width direction thereof, and dust is cleaned.
S2, embedding FRP composite material 3: the FRP composite 3 is half-fitted into the groove 11.
S3, fixing the FRP composite material 3: the anchor plate 21 is uniformly provided with a plurality of blocks along the length direction of the reinforced concrete flexural member 1, and rivets 23 are driven into the concrete through the anchor plate 21.
S4, pouring a UHPC layer 4: the UHPC is poured to fill the gap between the groove 11 and the FRP composite 3 until the cover is covered on the anchor plate 21 to form a protective layer.
The reinforcing method has small influence on the appearance of the reinforced concrete flexural member 1, good bonding effect of the reinforcing structure and the reinforced surface, difficult peeling, smooth and beautiful layer surface of the reinforcing structure, good mechanical property, toughness and durability of the reinforcing member, good reinforcing effect on the concrete structure and long service life; and the reinforced structure is simple, the damage to the reinforced concrete flexural member is small, and the construction is convenient.
While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (7)
1. A reinforced concrete flexural strengthening member characterized by: comprises a reinforced concrete flexural member (1), an FRP composite material (3), an anchoring component and a UHPC layer (4); the lower surface of the reinforced concrete flexural member (1) is provided with a plurality of grooves (11) along the length direction or the width direction; the FRP composite material (3) is semi-embedded in the groove (11) and is fixed through the anchoring component; the depth of the groove (11) of the reinforced concrete flexural member (1) is 0.4-0.6 times of the height of the FRP composite material (3), and the width is 1.1-1.4 times of the single tube width of the FRP composite material (3); the UHPC layer (4) is covered below the FRP composite material (3) and the anchoring component to form a protective layer; the UHPC aggregate particle size of the UHPC layer (4) is smaller than 2mm, and the thickness of the UHPC layer (4) is 15-20mm.
2. The reinforced concrete flexural reinforcement member of claim 1 wherein: the FRP composite material (3) is an FRP rib or an FRP grid.
3. The reinforced concrete flexural reinforcement member of claim 1 wherein: the anchoring assembly comprises a plurality of U-shaped fasteners (2); the U-shaped fastener (2) is fixedly connected with the reinforced concrete flexural member (1), and the U-shaped fastener (2) is provided with at least 3 head ends, tail ends and middle parts which are distributed at equal intervals in the length direction of the FRP composite material (3), so that the FRP composite material (3) is fastened through the U-shaped fastener (2).
4. A reinforced concrete flexural strengthening member as claimed in claim 3, wherein: the U-shaped fastener (2) comprises an anchor plate (21) and rivets (23), wherein small openings are formed in the two ends of the anchor plate (21), and the rivets (23) penetrate through the small openings and are fixedly connected with the reinforced concrete flexural member (1), so that the FRP composite material (3) is located above the anchor plate (21) and between the rivets (23) on the two sides of the anchor plate (21).
5. The reinforced concrete flexural reinforcement member of claim 4 wherein: the anchor plate (21) is a wave-shaped plate, so that the bulge of the anchor plate (21) can be attached to the surface of the reinforced concrete flexural member (1) while the FRP composite material (3) is fastened by the anchor plate (21).
6. The reinforced concrete flexural reinforcement member of claim 5 wherein: the bulge of the anchoring plate (21) is provided with a preformed hole, and when the anchoring force is insufficient, a small-size rivet is additionally arranged to penetrate through the preformed hole and fixedly connected with the reinforced concrete flexural member (1).
7. A method for reinforcing a reinforced concrete flexural member is characterized by comprising the following steps: a reinforced concrete flexural reinforcement member for use in constructing claim 6, comprising the steps of:
s1, machining grooves (11): a groove (11) is formed on the lower surface of the reinforced concrete flexural member (1) along the length direction or the width direction of the reinforced concrete flexural member, and dust is cleaned;
s2, embedding an FRP composite material (3): semi-embedding the FRP composite material (3) into the groove (11);
s3, fixing the FRP composite material (3): uniformly arranging a plurality of anchor plates (21) along the length direction of the reinforced concrete flexural member (1), and driving rivets (23) into concrete through the anchor plates (21);
s4, pouring a UHPC layer (4): and pouring UHPC to fill gaps between the grooves (11) and the FRP composite (3) until the gaps are covered on the anchor plate (21) to form a protective layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310409785.7A CN116464313B (en) | 2023-04-17 | 2023-04-17 | Reinforced concrete flexural reinforcement member and reinforcement method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310409785.7A CN116464313B (en) | 2023-04-17 | 2023-04-17 | Reinforced concrete flexural reinforcement member and reinforcement method |
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| CN116464313A CN116464313A (en) | 2023-07-21 |
| CN116464313B true CN116464313B (en) | 2024-01-30 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201753531U (en) * | 2010-07-16 | 2011-03-02 | 吴智深 | Concrete structure reinforced by prestress FRP ribs |
| CN104233966A (en) * | 2014-10-22 | 2014-12-24 | 东莞理工学院 | Embedded bridge reinforcing structure and method |
| KR101621918B1 (en) * | 2015-09-17 | 2016-05-18 | 주식회사 리폼시스템 | Structure and Method for Reinforcing Concrete Member using FRP bar fixed by Anchor for Tendon |
| CN111608418A (en) * | 2020-05-26 | 2020-09-01 | 华中科技大学 | FRP (fiber reinforced Plastic) rib with novel embedded anchoring device and application method thereof |
| CN213508105U (en) * | 2020-10-16 | 2021-06-22 | 广州快速交通建设有限公司 | Reinforced structure for improving bending resistance bearing capacity of hollow slab for small-span bridge |
| CN113107226A (en) * | 2021-04-26 | 2021-07-13 | 安徽建筑大学 | Self-locking anchoring system for FRP strip and reinforced concrete beam and construction method thereof |
-
2023
- 2023-04-17 CN CN202310409785.7A patent/CN116464313B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201753531U (en) * | 2010-07-16 | 2011-03-02 | 吴智深 | Concrete structure reinforced by prestress FRP ribs |
| CN104233966A (en) * | 2014-10-22 | 2014-12-24 | 东莞理工学院 | Embedded bridge reinforcing structure and method |
| KR101621918B1 (en) * | 2015-09-17 | 2016-05-18 | 주식회사 리폼시스템 | Structure and Method for Reinforcing Concrete Member using FRP bar fixed by Anchor for Tendon |
| CN111608418A (en) * | 2020-05-26 | 2020-09-01 | 华中科技大学 | FRP (fiber reinforced Plastic) rib with novel embedded anchoring device and application method thereof |
| CN213508105U (en) * | 2020-10-16 | 2021-06-22 | 广州快速交通建设有限公司 | Reinforced structure for improving bending resistance bearing capacity of hollow slab for small-span bridge |
| CN113107226A (en) * | 2021-04-26 | 2021-07-13 | 安徽建筑大学 | Self-locking anchoring system for FRP strip and reinforced concrete beam and construction method thereof |
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| CN116464313A (en) | 2023-07-21 |
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