CN110185281A - A kind of method that carbon fiber mesh reinforces seismic masonry wall - Google Patents
A kind of method that carbon fiber mesh reinforces seismic masonry wall Download PDFInfo
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- CN110185281A CN110185281A CN201910503507.1A CN201910503507A CN110185281A CN 110185281 A CN110185281 A CN 110185281A CN 201910503507 A CN201910503507 A CN 201910503507A CN 110185281 A CN110185281 A CN 110185281A
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- carbon fiber
- layer
- fiber mesh
- mortar
- masonry wall
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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
Abstract
This application discloses a kind of methods that carbon fiber mesh reinforces seismic masonry wall, which comprises the following steps: the processing of masonry wall basal plane；Mortar mixing；Smear internal layer mortar；It is laid with first layer carbon fiber mesh；It is laid with second layer carbon fiber mesh；Smear outer layer mortar；Sprinkling maintenance.Reinforcement means anti-seismic performance of the invention is good, and construction is experienced, and has a wide range of application, construction cost is low.
Description
Technical field
The present disclosure relates generally to build reinforcement technique field more particularly to a kind of carbon fiber mesh to reinforce seismic masonry wall
Method.
Background technique
Masonry structure has more than 2000 years history in China, but until before liberation, development is all relatively slower.New China
After establishment, masonry structure is rapidly developed, and the most of civilian and industrial building in China is all made of masonry structure body
System.
Compared with other structures form, masonry structure brittleness is big, intensity is low, overall performance is poor, and room easily occurs in earthquake
Face is destroyed and part is collapsed.China is in the centre of Eurasian earthquake zone and circum-Pacific seismic belt, and the region of earthquake zone distribution is non-
Chang Guang and dispersion, it is the one of the countries with the most serious ... that suffers disaster from an earthquake in the world that earthquake is more and strong.Due to vast rural area and township
Town regional economy falls behind relatively, and rural resident and small towns public building facility shake-proof ability are weak, when by same earthquake intensity
When, the collapse and casualties degree of country building are much higher than urban area.Previous earthquake shows that Multi-storey block is built
It builds and is destroyed in earthquake the most seriously.Such as Tangshan Earthquake in 1976, masonry wall house collapse rate was more than 70%, Xinjiang in 1991
Keping Earthquake, Yunnan Pu'er earthquake MS6.4 in 1993, the destructive rate of brick-concrete composite buildings are more than 75%.On May 12nd, 2008, Wenchuan earthquake was made
It is damaged at 140,000,000 houses, 69227 people are wrecked, and 374643 people are injured, and be missing 17923 people, bring to the country and people huge
Loss and the pain of injury.The house connoisseur rescue group being made of after Wenchuan earthquake Department of Construction of Guangdong Province is to 1141, Wenchuan county town
House earthquake situation is counted, and brick house accounts for about 73%.If effective method can be taken to the degree of injury of masonry structure
Expansion evaluation, carries out effectively repairing and reinforcement, inhibits further expanding for damage, so that it may the service life of extending structure.
Carbon fiber-based composite material has been widely used for the reparation of building and structure changes due to its excellent mechanical performance
In making.Carbon fiber has many advantages, such as high specific strength, specific modulus, light and resistant to chemical etching, therefore becomes the first choice of reinforcement material,
The effect of wall body structure directly affects the using effect of whole building, and what application was most at present is carbon fibre fabric and structural bond
The composite material that agent is constituted.Due to its excellent corrosion resistant characteristic, industry is reinforced in building and is widely used.
Reinforcement material can provide effective support for masonry wall, share the load that wall is born.Carbon fiber board is suitble to
In local stiffening, and it is unobvious for the consolidation effect of masonry wall and with high costs.Requirement of the carbon cloth to basal plane is high, base
It constructs in the case that face is uneven or basal plane is moist the appearance of the problems such as easily causing bulge.But structural adhesive thermal deformation temperature
Spend low, when room temperature is high or fire condition occurs, structural adhesive easily fails, and enables the carrying of structural strengthening system
Power sharp fall.
Summary of the invention
It in view of drawbacks described above in the prior art or deficiency, is intended to provide that a kind of anti-seismic performance is good, and construction is experienced, answers
Method wide with range, that the low carbon fiber mesh of construction cost reinforces seismic masonry wall.
The method that a kind of carbon fiber mesh that this valve provides reinforces seismic masonry wall, comprising the following steps:
The processing of masonry wall basal plane, the weaker zone on masonry wall surface is removed, then the floating ash on the masonry wall surface is removed
Completely, dabbing cleaning is carried out to the basal plane of the masonry wall then the boss chipping of the masonry wall basal plane is used into clear water
The basal plane of the masonry wall is sufficiently infiltrated, smears a bed boundary agent after the masonry wall basal plane is without obvious water mark；
The former material of polymer mortar is sufficiently stirred according to the ratio of mud of design, stirs evenly standby by mortar mixing
With；
Smearing internal layer mortar will be filled and led up using the spare polymer mortar at the hollow on the masonry wall basal plane,
Before reaching dry to touch to the interfacial agents, one layer of polymer mortar is smeared in the basal plane of the masonry wall and forms internal layer
Mortar smoothes out the internal layer mortar surface whole；
It is laid with first layer carbon fiber mesh, the carbon fiber mesh cut is tiled to the surface of the internal layer mortar and is formed
First layer carbon fiber mesh, first layer carbon fiber mesh lapped layup along Impact direction, to the first layer when laying
The end of carbon fiber mesh is fixed temporarily, then pressing the first layer carbon fiber mesh makes it be embedded in the internal layer mortar
Surface, and guarantee that the first layer carbon fiber mesh tenses；
It is laid with second layer carbon fiber mesh, smears one layer of polymer mortar on first layer carbon fiber mesh surface
Connecting layer mortar is formed, then the carbon fiber mesh cut tiling is formed into second layer carbon to the connecting layer mortar surface
Fiber mesh, second layer carbon fiber mesh lapped layup along Impact direction, to the second layer carbon fiber mesh when laying
End is fixed temporarily, then pressing the second layer carbon fiber mesh makes it be embedded in the surface of the internal layer mortar, and guarantees
The second layer carbon fiber mesh tenses；
Outer layer mortar is smeared, after the internal layer mortar and connecting layer mortar initial set, in the second layer carbon fiber
Surface mesh smears one layer of polymer mortar and forms outer layer mortar, and the surface press polish of the outer layer mortar is levelling；
Sprinkling maintenance carries out sprinkling maintenance to age on the surface of the outer layer mortar.
Preferably, the interfacial agents in masonry wall basal plane processing step are epoxy group interfacial agents.
Preferably, the ratio of mud of the polymer mortar in mortar mixing step is 15.5%.
Preferably, the smearing thickness control for smearing the internal layer mortar in internal layer mortar step is 5mm.
Preferably, the lap width for being laid with first layer carbon fibre web in first layer carbon fiber mesh step is 20cm.
Preferably, the smearing thickness control for the connecting layer mortar being laid in second layer carbon fiber mesh step is 2-3mm；The
The lap width of two layers of carbon fibre web is 20cm.
Preferably, when being laid with first layer carbon fiber mesh and second layer carbon fiber mesh, steel tabletting is all made of respectively to it
End is fixed temporarily.
Preferably, first layer carbon fiber mesh is embedded in the surface of internal layer mortar using mud shovel pressing；Second layer carbon fibre web
Lattice are embedded in the surface of connecting layer mortar using mud shovel pressing.
Preferably, the smearing thickness control for smearing the outer layer mortar in outer layer mortar step is 7-8mm.
In terms of existing technologies, the beneficial effect of the application is: the carbon fiber mesh of the application reinforces seismic masonry
The method of wall replaces structural adhesive using polymer mortar, due to containing the inorganic materials such as a large amount of quartz sands in polymer mortar
Material, therefore fire protecting performance is good；In addition to this, polymer mortar is low compared to construction cost for structure glue, constructs and experiences
And can apply under the not gentle moist operating condition of basal plane, application range is wider.
The carbon fiber mesh used in method of the invention has high specific strength, specific modulus, improves reinforcement material
Fracture resistance, masonry wall safety stock performance is significantly improved after carbon fiber mesh is reinforced, and the brittleness of masonry wall obtains after reinforcing
Improve；Carbon fiber mesh has excellent corrosion resistance, so that preventing the concrete cover of chemical erosion from no longer needing, simplifies
Construction technology, has saved construction cost.
Therefore, the masonry wall anti-seismic performance that the method which provides is reinforced is good, and construction is experienced, has a wide range of application,
Construction cost is low.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the process signal for the method that a kind of carbon fiber mesh provided by the embodiments of the present application reinforces seismic masonry wall
Figure.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Referring to FIG. 1, reinforcing the method for seismic masonry wall for a kind of carbon fiber mesh that embodiments herein provides
Flow diagram, comprising the following steps:
The processing of S11 masonry wall basal plane, the weaker zone on masonry wall surface is removed, then the floating ash on the masonry wall surface is clear
Except clean, to the masonry wall basal plane progress dabbing cleaning, by the boss chipping of the masonry wall basal plane, then with clear
Water sufficiently infiltrates the basal plane of the masonry wall, and one layer of epoxy group interface is smeared after the masonry wall basal plane is without obvious water mark
Agent, epoxy group interfacial agents can increase the bonding force of polymer mortar Yu masonry wall basal plane；
The former material of polymer mortar is sufficiently stirred S12 mortar mixing according to the ratio of mud 15.5% of design, stirring
Spare after uniformly, containing inorganic material such as a large amount of quartz sands in polymer mortar, fire protecting performance is good, and polymer mortar phase
, construction low compared with construction cost for structure glue is experienced good and can be applied under the not gentle moist operating condition of basal plane, application range
It is wider；
S13 is smeared internal layer mortar and will be filled out at the hollow on the masonry wall basal plane using the spare polymer mortar
It is flat, before reaching dry to touch to the interfacial agents, one layer of polymer mortar is smeared in the basal plane of the masonry wall and is formed
Internal layer mortar, by the internal layer mortar surface smooth out it is whole, control the internal layer mortar with a thickness of 5mm；
To fill and lead up at hollow on masonry wall basal plane is in order to ensure masonry wall basal plane and internal layer mortar come into full contact with.
S14 is laid with first layer carbon fiber mesh, by the carbon fiber mesh cut tiling to the surface of the internal layer mortar
Formation first layer fibre carbon dimension grid, first layer carbon fiber mesh lapped layup along Impact direction, lap width 20cm,
The end of the first layer carbon fiber mesh is fixed temporarily using steel tabletting when laying, then using mud shovel pressing described the
One layer of carbon fiber mesh makes it be embedded in the surface of the internal layer mortar, and guarantees that the first layer carbon fiber mesh tenses, mud shovel
Small volume and less weight, convenient for operation, press surface is smooth, and pressing effect is preferable；
S15 is laid with second layer carbon fiber mesh, smears one layer of polymer on first layer carbon fiber mesh surface
Mortar formed connecting layer mortar, control the connecting layer mortar with a thickness of 2-3mm；The carbon fiber mesh that will have been cut again
It tiles and forms second layer fibre carbon dimension grid to the connecting layer mortar surface, the second layer carbon fiber mesh is along Impact direction
Lapped layup, lap width 20cm are carried out using steel tabletting the end of the second layer carbon fiber mesh when laying interim
It is fixed, then pressing the second layer carbon fiber mesh using mud shovel makes it be embedded in the surface of the connecting layer mortar, and guarantees institute
State the tension of second layer carbon fiber mesh；
Carbon fiber mesh has high specific strength, specific modulus, improves the fracture resistance of reinforcement material, carbon fiber mesh adds
Gu masonry wall safety stock performance is significantly improved after, and the brittleness of masonry wall is improved after reinforcing；Carbon fiber mesh has excellent
Different corrosion resistance simplifies construction technology so that preventing the concrete cover of chemical erosion from no longer needing, and saving is constructed into
This.
S16 smears outer layer mortar, after the internal layer mortar and connecting layer mortar initial set, in the second layer carbon fiber
It ties up surface mesh and smears one layer of polymer mortar formation outer layer mortar, the surface press polish of the outer layer mortar is levelling, control
Make the outer layer mortar with a thickness of 7-8mm.
S17 sprinkling maintenance carries out sprinkling maintenance to age on the surface of the outer layer mortar.
In order to further confirm that the consolidation effect of method of the invention, inventor has also carried out verification experimental verification, and test uses
Low-cycle loading, for stress of the simulation wall under geological process, experimental rig is loaded by horizontal and vertical two parts
System composition.
The application of horizontal load is first applied before formal load using the method for load-displacement mixing control, multistage loadings
Add 40KN horizontal load to push and pull repeatedly 2 times, is preloaded.Application vertical load 225KN, which is once filled up, to be remained unchanged, until examination
Part destroys；It is controlled before wall crazing by load, every grade is incremented by by 25KN, and every grade recycles 1 time.After cracking press Bit andits control, every grade
Increase by 1 cracking displacement, every grade recycles 2 times.After the load that reaches capacity, continue by Bit andits control, every grade increases by 2 cracking displacements, when
Wall load reduction to ultimate load 85% or less when, that is, think wall lose bearing capacity and reach collapse state, test
Terminate.
It is No. 1 sample by the specimen coding that do not reinforce, the specimen coding that a floor carbon fiber mesh is reinforced is No. 2 examinations
Sample, the specimen coding that the double-deck carbon fiber mesh is reinforced are No. 3 samples, and the double-deck carbon fiber mesh is reinforced and applies the examination of anchoring temporarily
Sample number is No. 4 samples.It is compared with No. 1 sample, No. 2 sample cracking load improve 19.5%, and No. 3 sample cracking load improve
38.5%, No. 4 sample cracking load improve 52.2%, and the raising of cracking load is the specific body that its flexural strength improves
It is existing, and then prove that carbon fiber mesh is obvious to the consolidation effect of masonry wall.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (9)
1. a kind of method that carbon fiber mesh reinforces seismic masonry wall, which comprises the following steps:
The processing of masonry wall basal plane, the weaker zone on masonry wall surface is removed, then the floating ash on the masonry wall surface is removed completely,
Dabbing cleaning is carried out to the basal plane of the masonry wall, by the boss chipping of the masonry wall basal plane, then with clear water by institute
The basal plane for stating masonry wall sufficiently infiltrates, and smears a bed boundary agent after the masonry wall basal plane is without obvious water mark；
The former material of polymer mortar is sufficiently stirred mortar mixing according to the ratio of mud of design, spare after mixing evenly；
Smearing internal layer mortar will be filled and led up, to institute using the spare polymer mortar at the hollow on the masonry wall basal plane
It states before interfacial agents reach dry to touch, smears one layer of polymer mortar in the basal plane of the masonry wall and form internal layer sand
Slurry smoothes out the internal layer mortar surface whole；
It is laid with first layer carbon fiber mesh, the carbon fiber mesh cut tiling is formed first to the surface of the internal layer mortar
Layer carbon fiber mesh, first layer carbon fiber mesh lapped layup along Impact direction, to the first layer carbon fiber when laying
The end of dimension grid is fixed temporarily, then pressing the first layer carbon fiber mesh makes it be embedded in the table of the internal layer mortar
Face, and guarantee that the first layer carbon fiber mesh tenses；
It is laid with second layer carbon fiber mesh, one layer of polymer mortar is smeared on first layer carbon fiber mesh surface and is formed
Connecting layer mortar, then the carbon fiber mesh cut tiling is formed into second layer carbon fiber to the connecting layer mortar surface
Grid, second layer carbon fiber mesh lapped layup along Impact direction, to the end of the second layer carbon fiber mesh when laying
It is fixed temporarily, then pressing the second layer carbon fiber mesh makes it be embedded in the surface of the internal layer mortar, and described in guarantee
Second layer carbon fiber mesh tenses；
Outer layer mortar is smeared, after the internal layer mortar and connecting layer mortar initial set, in the second layer carbon fiber mesh
Surface smears one layer of polymer mortar and forms outer layer mortar, and the surface press polish of the outer layer mortar is levelling；
Sprinkling maintenance carries out sprinkling maintenance to age on the surface of the outer layer mortar.
2. the method that carbon fiber mesh according to claim 1 reinforces seismic masonry wall, which is characterized in that the masonry wall
The interfacial agents in basal plane processing step are epoxy group interfacial agents.
3. the method that carbon fiber mesh according to claim 2 reinforces seismic masonry wall, which is characterized in that the mortar is mixed
The ratio of mud of the polymer mortar in step processed is 15.5%.
4. the method that carbon fiber mesh according to claim 3 reinforces seismic masonry wall, which is characterized in that in the smearing
The smearing thickness control of the internal layer mortar in layer mortar step is 5mm.
5. the method that carbon fiber mesh according to claim 4 reinforces seismic masonry wall, which is characterized in that described to be laid with the
The lap width of first layer carbon fibre web described in one layer of carbon fiber mesh step is 20cm.
6. the method that carbon fiber mesh according to claim 5 reinforces seismic masonry wall, which is characterized in that described to be laid with the
The smearing thickness control of the connecting layer mortar in two layers of carbon fiber mesh step is 2-3mm；The second layer carbon fibre web
Lap width be 20cm.
7. the method that carbon fiber mesh according to claim 6 reinforces seismic masonry wall, which is characterized in that be laid with described the
When one layer of carbon fiber mesh and the second layer carbon fiber mesh, it is all made of steel tabletting and its end is fixed temporarily respectively.
8. the method that carbon fiber mesh according to claim 7 reinforces seismic masonry wall, which is characterized in that the first layer
Carbon fiber mesh is embedded in the surface of the internal layer mortar using mud shovel pressing；The second layer carbon fiber mesh is pressed using mud shovel
It is embedded in the surface of the connecting layer mortar.
9. the method that carbon fiber mesh according to claim 8 reinforces seismic masonry wall, which is characterized in that outside the smearing
The smearing thickness control of the outer layer mortar in layer mortar step is 7-8mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110514496A (en) * | 2019-09-02 | 2019-11-29 | 卡本科技集团股份有限公司 | A kind of anchorage experiment method of carbon fiber mesh reinforced concrete beam end |
| CN111764682A (en) * | 2020-07-09 | 2020-10-13 | 江苏华源建筑设计研究院股份有限公司 | Wall reinforcing method for reducing cracks of industrial building outer wall |
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| CN106930550A (en) * | 2015-12-30 | 2017-07-07 | 卡本复合材料（天津）有限公司 | A kind of carbon fiber mesh reinforcement means |
| CN108298904A (en) * | 2018-02-08 | 2018-07-20 | 中国矿业大学 | A kind of reinforcement means for the ECC composite fibre mesh grids improving masonry wall anti-seismic performance |
| CN208363688U (en) * | 2018-06-29 | 2019-01-11 | 北京瑞博远绿色建筑科技有限公司 | A kind of masonry panel carbon fiber mesh fabric ruggedized construction |
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| CN101476396A (en) * | 2009-01-22 | 2009-07-08 | 大连理工大学 | Method for reinforcing construction structure by fiber knitted net and fine concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110514496A (en) * | 2019-09-02 | 2019-11-29 | 卡本科技集团股份有限公司 | A kind of anchorage experiment method of carbon fiber mesh reinforced concrete beam end |
| CN110514496B (en) * | 2019-09-02 | 2022-07-12 | 卡本科技集团股份有限公司 | Anchoring test method for reinforcing end part of concrete beam by carbon fiber grids |
| CN111764682A (en) * | 2020-07-09 | 2020-10-13 | 江苏华源建筑设计研究院股份有限公司 | Wall reinforcing method for reducing cracks of industrial building outer wall |
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Application publication date: 20190830 |