CN108571180A - A kind of beams of concrete column reinforcing method - Google Patents
A kind of beams of concrete column reinforcing method Download PDFInfo
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- CN108571180A CN108571180A CN201810464064.5A CN201810464064A CN108571180A CN 108571180 A CN108571180 A CN 108571180A CN 201810464064 A CN201810464064 A CN 201810464064A CN 108571180 A CN108571180 A CN 108571180A
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- 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
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/025—Structures with concrete columns
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/027—Preventive constructional measures against earthquake damage in existing buildings
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- 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
- E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
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- Environmental & Geological Engineering (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)
Abstract
The present invention relates to concrete structure reinforcement fields, disclose a kind of beams of concrete column reinforcing method, and this method includes：Beam column built from concrete is sprayed to after resin and curing agent are mixed in high-pressure spray gun and waits for reinforcing area, while chopped strand is ejected to reinforcing area is waited for by optical fiber cutting apparatus, and the mixed liquor of resin and curing agent is mixed with chopped strand in region surface to be reinforced.A kind of beams of concrete column reinforcing method provided by the invention, using sprayed construction technique, fiber is directly strong bonded with out-of-flatness, complexity or irregular body structure surface with resinous polymer, and the integral reinforcing layer of a good mechanical properties can be formed in the node surface of complex shape；The chopped strand of injection is random distribution, can bear the stress of any direction, therefore be highly suitable for the stress distribution situation at node, significantly simplify construction；It is more efficient without before ejecting mixing and stirring the materials such as fiber and resin.
Description
Technical field
The present invention relates to concrete structure reinforcement fields, more particularly to a kind of beams of concrete column reinforcing method.
Background technology
Reinforced concrete frame structure is structure type widely used in China urban housing.In different degrees of earthquake
In disaster, other than minority is caved in or is destroyed seriously, most of concrete frame structure house is slight or moderate lesion, is belonged to
The scope of " can repair ", " can reinforce ".Currently, a large amount of frame structure building all has reached or close to design life,
Even some buildings do not make Aseismic Design or anti-seismic performance is insufficient.Under geological process, node be frame structure most it is weak most
It is easy impaired position, the destruction of node can lead to the depression of bearing force of entire frame structure.So node section is frame knot
The most important part of structure, it plays transmission and distribution internal force, the effect of holding structure globality.
Currently, having carried out a large amount of research to beam-column joint reinforcing, traditional concrete structure reinforcement method has increasing
Big strengthened section method, displacement coagulation local method, external prestressed strengthening method, setting support method for strengthening, reinforced with external steel encased etc., these
Method environmental pollution, noise, material consumption in construction is all bigger, can all bring corresponding indirect loss.
Chinese patent CN106988550A discloses a kind of reinforcement means of concrete beam and column node FRP cloth material, this method
Including：Remove the concrete to fail on damaged concrete bean column node；It is filled up with filler at removing；It is more than at remaining
The crack of 0.3mm slit widths is embedded in epoxy resin；It polishes concrete beam and column node surface after object hardening to be filled；It is beating
Concrete beam and column node surface after milled is by design spacing trepanning；The edge up and down of concrete beam and column node, pillar,
FRP cloth material is pasted at beam, beam column interface respectively, and then the anchor bolt of fiber anchor is embedded in hole and inserts epoxy resin in gap and is consolidated
It is fixed, then FRP cloth material surface will be pasted on by epoxide-resin glue after the evagination fiber bending of fiber anchor.
The existing reinforcement means to concrete structure is there are paste operation complexity, required precision height and be easy to cause viscous
Paste unstable problem.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of beams of concrete column reinforcing methods, existing to mixed for solving or partly solving
The reinforcement means of Xtah Crude Clay structure there is a problem of that paste operation is complicated, required precision is high and be easy to cause be pasted not strongly it is solid.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of beams of concrete column reinforcing method, this method includes：It will tree
Fat and curing agent spray to beam column built from concrete and wait for reinforcing area after being mixed in high-pressure spray gun, while being ejected by optical fiber cutting apparatus
Chopped strand waits for that reinforcing area, the mixed liquor and chopped strand of resin and curing agent are mixed in the region surface to be reinforced to described
It closes.
On the basis of said program, further include before resin and the injection of curing agent and chopped strand：Described in polishing
Region surface to be reinforced, makes surfacing；Region surface weaker zone to be reinforced described in removal；Reinforcing area table is waited for described in cleaning
Face；Processing is dried to the surface after cleaning；The region surface to be reinforced is repaired using patching material.
On the basis of said program, using acetone clean described in region surface to be reinforced；The patching material includes boundary
Surface treatment material or mending mortar.
On the basis of said program, the optical fiber cutting apparatus is fixed to the top of the spray gun, the fiber
The spout of cutter and the spout of the spray gun wait for reinforcing area, the optical fiber cutting apparatus and spray gun system simultaneously towards described
One control switch.
On the basis of said program, the resin is conveyed by resin pump, described resin pump one end and the spray
The first entrance of rifle is connected, and the other end of the resin pump is connected with the resin box for accommodating the resin, and the curing agent passes through
Catalyst pump is conveyed, and one end of the catalyst pump is connected with the second entrance of the spray gun, the catalyst pump it is another
One end is connected with the container for accommodating the curing agent, and carrying out stepless linkage to the resin pump and the catalyst pump is adjusted, and is made
Obtain the proportions constant of resin and curing agent in the mixed liquor.
On the basis of said program, the optical fiber cutting apparatus includes an idler wheel, and the circumferential direction along the idler wheel is uniformly arranged
Several blades, the optical fiber cutting apparatus are connected with silvalin, and the optical fiber cutting apparatus is fast by the rotation for adjusting the idler wheel
The silvalin is cut into the chopped strand of different length by the quantity of degree and blade.
On the basis of said program, the resin includes：Vinyl ester resin；The curing agent includes polyester resin；
The chopped strand includes glass fibre, carbon fiber or aramid fiber.
On the basis of said program, the injection rate of the resin is：3.5~5kg/min；The curing agent with it is described
The ratio of resin is 0.8~3%；The injection rate of the chopped strand is 1.5~2kg/min；The length of the chopped strand
For 8~48mm.
On the basis of said program, sprayed in resin and curing agent and chopped strand it is described when reinforcing area, it is even
The mobile spray gun of speed is to ensure that coating thickness is uniform.
On the basis of said program, trolley is set, by the resin pump, resin box, catalyst pump and is accommodated solid
The container of agent is placed on the trolley and is moved.
(3) advantageous effect
A kind of beams of concrete column reinforcing method provided by the invention, using sprayed construction technique, fiber and resinous polymer
Can be strong bonded with out-of-flatness, complexity or irregular body structure surface, therefore it is very suitable for the reinforcing of frame joint, Ke Yi
The node surface of complex shape forms the integral reinforcing layer of a good mechanical properties；
The chopped strand that the construction of jet fiber polymer generates is random distribution, can bear the stress of any direction,
Therefore the stress distribution situation being highly suitable at node, without to prejudge stress as common stickup FRP reinforcement techniques
Direction is pasted along multiple directions, significantly simplifies construction；
The fibrous polymeric materials formed using spray technology are directly bonded together with concrete surface, need not be special
Adhesive layer, be different from the adhesive pattern of traditional " fiber cloth+adhesive layer+concrete ", can be reinforcement material and concrete
It works together and more reliable bond quality is provided；
Using this reinforcement technique without before ejecting mixing and stirring the materials such as fiber and resin, but directly by respective special
It is injected in body structure surface mixed-forming simultaneously with nozzle, it is more efficient.
Description of the drawings
Fig. 1 is a kind of principle schematic of beams of concrete column reinforcing method of the embodiment of the present invention；
Fig. 2 is a kind of operating process schematic diagram of beams of concrete column reinforcing method of the embodiment of the present invention.
Reference sign：
1-column；2-beams；3-joint cores；
4-fibre-forming polymers；5-optical fiber cutting apparatus；6-spray guns；
7-resin box；8-catalyst pumps；9-resin pumps；
10-silvalins.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The present embodiment provides a kind of beams of concrete column reinforcing method according to the present invention, and this method includes：By resin and solidification
Agent sprays to beam column built from concrete and waits for reinforcing area after being mixed in spray gun 6, while ejecting chopped strand extremely by optical fiber cutting apparatus 5
Described to wait for reinforcing area, the mixed liquor of resin and curing agent is mixed with chopped strand in the region surface to be reinforced.
A kind of beams of concrete column reinforcing method provided in this embodiment is using 4 technology of jet fiber polymer to coagulation
A kind of new method reinforced at soil structure beam column, especially beam column node core area 3.This method uses optical fiber cutting apparatus 5,
It may be, for example, chopped spray-moulding machine and silvalin 10 be cut to chopped strand by multigroup blade.
With reference to figure 1, then by the resin of doping proper proportion curing agent and chopped strand via respective dedicated nozzle.It can
The power generated using air compressor, resin and chopped strand are continued to spray at high speed in region surface to be reinforced.Make
Chopped strand and the resin for being doped with curing agent are mixed to form fibre-forming polymer 4 in region surface to be reinforced and are molded, to beam
Column waits for that reinforcing area is reinforced.
The reinforcement technique mixes chopped strand and resin outside spray gun 6, can effectively prevent material in spray gun 6
Portion cures, and can reduce equipment cleaning.
The reinforcement technique remove with do not increase component dead weight and volume, it is high-strength efficiently, the convenient, corrosion resistance and resistance to of constructing
Outside the advantages of long property is good, the common stickup FRP reinforcement techniques such as widely applicable, also have the following advantages that：Using sprayed construction work
Skill, fiber can be strong bonded with out-of-flatness, complexity or irregular body structure surface with resinous polymer, therefore is very suitable for frame
The reinforcing of frame node can form the integral reinforcing layer of a good mechanical properties in the node surface of complex shape.
The chopped strand that the construction of jet fiber polymer 4 generates is random distribution, can bear the stress of any direction,
Therefore the stress distribution situation being highly suitable at node, without to prejudge stress as common stickup FRP reinforcement techniques
Direction is pasted along multiple directions, significantly simplifies construction.
4 material of fibre-forming polymer formed using spray technology is directly bonded together with concrete surface, need not be special
The adhesive layer of door, is different from the adhesive pattern of traditional " fiber cloth+adhesive layer+concrete ", can be reinforcement material and coagulation
Soil, which works together, provides more reliable bond quality.
Using this reinforcement technique without before ejecting mixing and stirring the materials such as fiber and resin, but directly by respective special
It is injected in body structure surface mixed-forming simultaneously with nozzle, it is more efficient.
Further, curing reaction time of jet fiber polymer 4 in order to control can add in curing agent in course of injection
The catalyst for entering proper proportion, to accelerate the solidification of fibre-forming polymer 4.
On the basis of the above embodiments, further, it is also wrapped before resin and the injection of curing agent and chopped strand
It includes：Region surface to be reinforced, makes surfacing described in polishing；Region surface weaker zone to be reinforced described in removal；It is waited for described in cleaning
Reinforcing area surface；Processing is dried to the surface after cleaning；Using patching material to the region surface to be reinforced into
Row repairing.
On the basis of the above embodiments, further, using acetone clean described in region surface to be reinforced；The repairing
Material includes interface processing material or mending mortar.
The present embodiment is based on above-described embodiment, to injection chopped strand and the mixed liquor of resin and curing agent before to beam
Wait for that the pretreatment of reinforcing area is illustrated on column.
The part for the concrete surface protrusion that can be polished first with sander, keeps concrete region surface to be reinforced smooth.So
After region surface weaker zone to be reinforced can be removed with brush.Place can manually be struck off for region surface super thick to be reinforced part
Reason.
Secondly, usable cotton swab dips acetone cleaning and waits for the buffed surface of reinforcing area concrete, then dries surface with dry cloth
To ensure drying, the cleaning of adhesive surface；And to polishing, treated waits for reinforcing area with concrete mortar skin patching material
Surface is repaired, and keeps surface clean and tidy, smooth.
After end to be pre-treated, start spray gun 6 and optical fiber cutting apparatus 5, in the outer mixed fibre of region surface to be reinforced injection
Dimensional polymers 4.
It further, should also be to waiting for that the chopped strand polymer 4 of reinforcing area carries out after jet fiber polymer 4
Cured later processing and maintenance processing.
On the basis of the above embodiments, further, with reference to figure 1, the optical fiber cutting apparatus 5 is fixed at described
The top of spray gun 6, the spout of the spout of the optical fiber cutting apparatus 5 and the spray gun 6 waits for reinforcing area simultaneously towards described, described
Optical fiber cutting apparatus 5 and the spray gun 6 are uniformly controlled switch.
The present embodiment is based on above-described embodiment, and the position setting of optical fiber cutting apparatus 5 and spray gun 6 is illustrated.Fiber
Cutter 5 can be fixed at the top of spray gun 6.And the spout of optical fiber cutting apparatus 5 is consistent with the spout direction of spray gun 6, i.e., together
Shi Chaoxiang waits for reinforcing area.
Optical fiber cutting apparatus 5 is connected with silvalin 10, for silvalin 10 to be cut into chopped strand, and sprays to and waits for stabilization zone
Domain.Spray gun 6 is connected with resin and curing agent simultaneously, and resin and curing agent are delivered to respectively in spray gun 6, are mixed in spray gun 6
Conjunction forms mixed liquor, is then sprayed to through spray gun 6 and waits for reinforcing area.
Optical fiber cutting apparatus 5 and spray gun 6 are uniformly controlled switch, i.e., the two is controlled by a switch.For example, spray can be passed through
The handle of rifle 6 controls the switch of spray gun 6 and optical fiber cutting apparatus 5 simultaneously.The two is sprayed simultaneously, is simultaneously stopped.Make chopped strand
It is sprayed to simultaneously with mixed liquor and waits for reinforcing area, fibre-forming polymer 4 is mixed to form in region surface to be reinforced.
On the basis of the above embodiments, further, the resin is conveyed by resin pump 9, the resin pump 9
One end is connected with the first entrance of the spray gun 6, and the other end of the resin pump 9 is connected with the resin box 7 for accommodating the resin,
The curing agent is conveyed by catalyst pump 8, and one end of the catalyst pump 8 is connected with the second entrance of the spray gun 6,
The other end of the catalyst pump 8 is connected with the container for accommodating the curing agent, to the resin pump 9 and the catalyst pump 8
It carries out stepless linkage to adjust so that the proportions constant of resin and curing agent in the mixed liquor.
The present embodiment is based on above-described embodiment, is illustrated to the conveying of resin and curing agent.Resin is placed on
In resin box 7, conveyed by resin pump 9.Curing agent is also positioned in a container, is conveyed by catalyst pump 8.
Resin pump 9 and catalyst pump 8 are all using air compressor as power.Resin pump 9 and catalyst pump 8 work together, nothing
Grade linkage is adjustable, this ensure that the proportions constant of resin and curing agent.Resin pump 9 and 8 stepless linkage of catalyst pump are adjusted, and are
Referring to resin pump 9 and catalyst pump 8 is integrally adjusted, i.e., the flow of two pumps changes simultaneously, and in change procedure,
The ratio of the two remains constant.Step-less adjustment, the i.e. flow of resin pump 9 and catalyst pump 8 can be continuously adjusted.
On the basis of the above embodiments, further, the optical fiber cutting apparatus 5 includes an idler wheel, along the idler wheel
Several blades circumferentially are uniformly arranged, the optical fiber cutting apparatus 5 is connected with silvalin 10, and the optical fiber cutting apparatus is by adjusting institute
The silvalin is cut into the chopped strand of different length by the quantity of the velocity of rotation and blade of stating idler wheel.
The present embodiment is based on above-described embodiment, and the concrete structure of optical fiber cutting apparatus 5 is illustrated.Optical fiber cutting apparatus 5
One idler wheel of inside setting, several blades are uniformly arranged along the circumferencial direction of idler wheel.Idler wheel can be divided into along idler wheel circumferencial direction
Then several deciles install blade at each Along ent.Long bundle fiber yarn 10 cut by idler wheel and blade chopped
Fiber.
The quantity of change idler wheel cutter can be passed through, thus it is possible to vary the length of chopped strand.
On the basis of the above embodiments, further, the resin includes：Vinyl ester resin；The curing agent packet
Include polyester resin；The chopped strand includes glass fibre, carbon fiber or aramid fiber.
The present embodiment is based on above-described embodiment, and the specific ingredient of resin and chopped strand is illustrated.Resin can
Using vinyl ester resin, it is commonly called as 901 resins.Polyester resin can be used in curing agent.Silvalin 10 can be glass fiber yarn, carbon fiber
Tie up yarn and aramid fiber yarn etc..Resin, curing agent and the silvalin 10 of this kind of material be more suitable for concrete structure into
Row is reinforced.
On the basis of the above embodiments, further, the injection rate of the resin is：3.5~5kg/min；It is described
The ratio of curing agent and the resin is 0.8~3%；The injection rate of the chopped strand is 1.5~2kg/min；It is described short
The length for cutting fiber is 8~48mm.
The present embodiment is based on above-described embodiment, some design parameters in course of injection are illustrated.Resin with it is short
Cutting fiber can be sprayed according to above-mentioned rate, the fibre-forming polymer 4 which forms to the consolidation effect of concrete structure compared with
It is good.
Curing agent is for making fibre-forming polymer 4 cure.Ratio of the curing agent in resin is preferable with 0.8~3%.It is short
Cutting the length of fiber can be changed by changing the quantity of idler wheel cutter in optical fiber cutting apparatus 5, generally between 8-48mm
It adjusts.
On the basis of the above embodiments, further, it is sprayed in resin and curing agent and chopped strand described to be added
Gu when region, at the uniform velocity moving spray gun 6 to ensure that coating thickness is uniform.
The present embodiment is based on above-described embodiment, and optical fiber cutting apparatus 5 is fixed on the top of spray gun 6, in jet fiber polymer 4
In the process, optical fiber cutting apparatus 5 and 6 one of spray gun are mobile.In course of injection, spray gun 6 should be moved at the uniform velocity, to prevent from waiting reinforcing
The coating thickness of region surface is uneven.
Further, in treating reinforcing area reinforcing process it is noted that control environment temperature be maintained at 20-30 DEG C between；
And the drying of the equipment such as spray gun 6 and optical fiber cutting apparatus 5 should be kept, to ensure to spray consolidation effect.
On the basis of the above embodiments, further, trolley is set, by the resin pump 9, resin box 7, solidification
Agent pump 8 and the container for accommodating curing agent, which are placed on the trolley, to be moved.
During jet fiber polymer 4, the equipment associated components can be both placed in for operating easily, on the other hand
It is easy to remove on cart so that preferably uniformly to treat reinforcing area and carry out spray fiber polymer 4.
Embodiment 1：
On the basis of the above embodiments, further, a kind of beams of concrete column reinforcing method, is polymerize using jet fiber
The method of object 4 reinforces beam column built from concrete, is particluarly suitable for the more complicated place in beam column node core area 3 and is added
Gu.It is joint cores 3 at beam 2 and the juxtaposition of column 1 in concrete structure with reference to figure 1.
This method is mainly characterized by the mixed liquor of fiber and resin and curing agent respectively by respective individual nozzle
It is sprayed, is mixed to form fibre-forming polymer 4 in 6 outside of spray gun, and silvalin 10 is cut into the fibre that is chopped simultaneously in fiber jet
Dimension.
In 6 mouthfuls of front ends of spray gun, there are one the tightness that special fibre cutting cutter, the cutter pass through adjusting idler wheel
Sub-thread or bifilar injection yarn can be cut into the chopped strand of 15~40mm long with the quantity of blade.
With reference to figure 2, when fibre-forming polymer 4 sprays, resin and curing agent are respectively put into resin box 7 and catalyst pump 8
In, jet fiber yarn 10 is placed in the optical fiber cutting apparatus 5 at 6 top of spray gun.
Then, start spray gun 6, resin can be delivered to spray gun via different pipelines by power of air pressure respectively from curing agent
6 times mouths form a kind of mixture slurry；At the same time, jet fiber yarn 10 can be by the cutter cuts at 6 top of spray gun at a fixed length
The chopped strand of degree, be injected in simultaneously with mixture slurry wait for reinforcing area (such as：Node area) surface mixing, it is formed and is added after hardening
Gu polymer.
A kind of beams of concrete column reinforcing method provided in this embodiment use sprayed construction method, make the fiber prescinded with
Adhesive special is mixed to form high-performance polymer, is bonded in concrete structure outer surface securely, forms a continuous, entirety
Reinforcing layer further enhance structural strength to effectively improve carrying, the deformability of component；And has and do not increase structure
The dead weight of part and volume, it is high-strength efficiently, it is good, applicable without match ratio, easy to operate, convenient, corrosion resistance of constructing and durability
The advantages that wide, good in economic efficiency.
The reinforcement means compared with prior art, has the following advantages：The material of this reinforcement means has random orientation
Feature is approximately isotropic material, can preferably meet the bearing requirements of stress complex component；
It is also particularly suitable using the construction technology of this reinforcement means other than being suitable for the flat configurations such as general slab column
In out-of-flatness, the reinforcing of complexity or irregular body structure surface；
This reinforcement means use high-pressure injection technique, reinforcing layer combined with the surface for being reinforced concrete structure it is closely knit, it is whole
Body is good, is conducive to reinforcing layer and the collaborative work for being reinforced component；
Using this reinforcement means without before ejecting mixing and stirring the materials such as fiber and resin, but directly by respective special
It is injected in body structure surface mixed-forming, more efficient, more efficient and convenient, easy to operate, economic benefit of constructing simultaneously with nozzle
It is good.
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
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of beams of concrete column reinforcing method, which is characterized in that including：
Beam column built from concrete is sprayed to after resin and curing agent are mixed in high-pressure spray gun and waits for reinforcing area, while being cut by fiber
Device ejects chopped strand and waits for that reinforcing area, the mixed liquor and chopped strand of resin and curing agent wait for stabilization zone described to described
Field surface mixes.
2. according to any beams of concrete column reinforcing method of claim 1, which is characterized in that in resin and curing agent and
Further include before chopped strand injection：
Region surface to be reinforced, makes surfacing described in polishing；Region surface weaker zone to be reinforced described in removal；It is waited for described in cleaning
Reinforcing area surface；Processing is dried to the surface after cleaning；Using patching material to the region surface to be reinforced into
Row repairing.
3. beams of concrete column reinforcing method according to claim 2, which is characterized in that using acetone clean described in wait reinforcing
Region surface；The patching material includes interface processing material or mending mortar.
4. beams of concrete column reinforcing method according to any one of claims 1 to 3, which is characterized in that cut the fiber
Device is fixed at the top of the spray gun, and the spout of the optical fiber cutting apparatus and the spout of the spray gun are waited for simultaneously towards described
Reinforcing area, the optical fiber cutting apparatus and the spray gun are uniformly controlled switch.
5. beams of concrete column reinforcing method according to any one of claims 1 to 3, which is characterized in that the resin passes through tree
Fat pump is conveyed, and described resin pump one end is connected with the first entrance of the spray gun, the other end of the resin pump and receiving
The resin box of the resin is connected, and the curing agent is conveyed by catalyst pump, one end of the catalyst pump with it is described
The second entrance of spray gun is connected, and the other end of the catalyst pump is connected with the container for accommodating the curing agent, to the resin
Pump and the catalyst pump carry out stepless linkage and adjust so that the proportions constant of resin and curing agent in the mixed liquor.
6. beams of concrete column reinforcing method according to any one of claims 1 to 3, which is characterized in that the optical fiber cutting apparatus
Including an idler wheel, several blades are uniformly arranged along the circumferential direction of the idler wheel, the optical fiber cutting apparatus is connected with silvalin, described
The silvalin is cut into different length by optical fiber cutting apparatus by adjusting the velocity of rotation of the idler wheel and the quantity of blade
Chopped strand.
7. beams of concrete column reinforcing method according to any one of claims 1 to 3, which is characterized in that the resin includes：Second
Alkenyl esters resin；The curing agent includes polyester resin；The chopped strand includes that glass fibre, carbon fiber or aramid fiber are fine
Dimension.
8. beams of concrete column reinforcing method according to claim 6, which is characterized in that the injection rate of the resin is：
3.5~5kg/min；The ratio of the curing agent and the resin is 0.8~3%；The injection rate of the chopped strand is 1.5
~2kg/min；The length of the chopped strand is 8~48mm.
9. beams of concrete column reinforcing method according to claim 4, which is characterized in that in resin and curing agent and be chopped
Fiber sprays to described when reinforcing area, at the uniform velocity moves spray gun to ensure that coating thickness is uniform.
10. beams of concrete column reinforcing method according to claim 5, which is characterized in that setting trolley, by the resin
It pump, resin box, catalyst pump and accommodates the container of curing agent and is placed on the trolley and is moved.
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| JPH0932313A (en) * | 1995-07-19 | 1997-02-04 | Kajima Corp | Reinforcing work of concrete beam |
| CN2654326Y (en) * | 2003-11-21 | 2004-11-10 | 李西隽 | Glass fibre reinforced plastic short cutting spray shaping machine |
| CN103161323A (en) * | 2013-03-06 | 2013-06-19 | 北京交通大学 | Reinforcing method of concrete structure beam column nodes |
| CN104193222A (en) * | 2014-08-26 | 2014-12-10 | 北京金港建设股份有限公司 | Epoxy resin fiber reinforced concrete for repair and preparation method thereof |
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2018
- 2018-05-15 CN CN201810464064.5A patent/CN108571180A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2169537Y (en) * | 1993-09-16 | 1994-06-22 | 武汉工业大学 | Jet shaping machine |
| JPH0932313A (en) * | 1995-07-19 | 1997-02-04 | Kajima Corp | Reinforcing work of concrete beam |
| CN2654326Y (en) * | 2003-11-21 | 2004-11-10 | 李西隽 | Glass fibre reinforced plastic short cutting spray shaping machine |
| CN103161323A (en) * | 2013-03-06 | 2013-06-19 | 北京交通大学 | Reinforcing method of concrete structure beam column nodes |
| CN104193222A (en) * | 2014-08-26 | 2014-12-10 | 北京金港建设股份有限公司 | Epoxy resin fiber reinforced concrete for repair and preparation method thereof |
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