CN104675141A - FRP (Fiber Reinforced Plastic) pipe confined cement based composite material reinforced pier column structure - Google Patents

FRP (Fiber Reinforced Plastic) pipe confined cement based composite material reinforced pier column structure Download PDF

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Publication number
CN104675141A
CN104675141A CN201510120404.9A CN201510120404A CN104675141A CN 104675141 A CN104675141 A CN 104675141A CN 201510120404 A CN201510120404 A CN 201510120404A CN 104675141 A CN104675141 A CN 104675141A
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pipe
fibre reinforced
reinforced composites
composite
fiber
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CN104675141B (en
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王文炜
郑宇宙
戴建国
田俊
朱忠锋
张磊
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Jiangsu Hengmei New Material Co., Ltd
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Southeast University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
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Abstract

The invention discloses an FRP (Fiber Reinforced Plastic) pipe confined cement based composite material reinforced pier column structure applied to reinforcement of pier columns with all structures. The FRP pipe confined cement based composite material reinforced pier column structure comprises a pier column, a fiber reinforced composite material base arranged at the bottom of the pier column, a fiber reinforced composite material pipe arranged around the pier column, a limiter fixing the position of the fiber reinforced composite material pipe, and an engineering cement based composite material filling a gap between the fiber reinforced composite material pipe and the pier column. The advantages of the fiber reinforced composite material base, the fiber reinforced composite material pipe, the engineering cement based composite material and fiber grid meshes are integrated and can be fully played, the excellent performance of a single material can be greatly improved under the action of mutual adhesion of the fiber reinforced composite material base, the fiber reinforced composite material pipe, the engineering cement based composite material and the fiber grid meshes, and the bearing capacity, the erosion resistibility, the anti-seismic property, the ductility, the fatigue resistance and the durability of the pier column structure are effectively improved.

Description

A kind of FRP pipe constraint cement-base composite material reinforces pillarwork
Technical field
The invention belongs to civil engineering, construction work, highway engineering and municipal engineering field, relate to a kind of FRP pipe constraint cement-base composite material and reinforce pillarwork.
Background technology
Reinforced concrete structure has been widely used in the engineering field such as building, civilian construction, has now become in our life and has applied maximum structures.Pier stud is as the main bearing member of structure, and its security performance affects the overall performance of total.Due to the defect of the aspect such as construction level, design standard, the various diseases of structure also come out gradually, especially in adverse circumstances, as environment such as freeze thawing, acid, alkali and salt, and show under the effect of impacts such as river seawater scouring, vehicle particularly evident.The aspects such as corrosion, the rigidity of the reinforcing bar that common pillarwork disease is embodied in pier stud depression of bearing force, concrete cover peels off, cause after concrete cracking reduce, anti-seismic performance is not enough.
The method of reinforcing pier stud conventional in engineering structures mainly contains Enlargement of Section, bonding steel plate method, the reinforcing of stickup FRP cloth, ring orientation prestress reinforcing etc.Above several reinforcement means mainly exist steel plate and presstressed reinforcing steel easy-to-rust, resin easily peel off aging, affect structure usage space and the problem such as operation is comparatively loaded down with trivial details, especially for reinforcing pillarwork under water, engineering quantity is comparatively large, construction cost is higher.
Be in the patent document of CN201420198404.1 at publication number, disclose a kind of hardened system of concrete column, this system adopts steel bushing as construction formwork, anchor bolt is relied on firm template to be fixed on the surface of works, filling concrete mortar between steel form and ruggedized construction thing, shortcoming is that steel bushing quality is larger, perishable, need that piecemeal splices, sealing is poor, and anchor bolt will be fixed on the inside of fixture, larger to structural damage.
Be in the patent document of CN201320011706.9 at publication number, disclose a kind of bracing means of pier stud under water, at ruggedized construction thing top, steel bracket fixing glass fiber sleeve is set, then the fill gaps grouting material in the middle of glass fibre sleeve and ruggedized construction thing, this invention can overcome the defect of reinforcing pier stud under water and needing to construct cofferdam, but the requirement of this device to steel bracket is higher, need to be fixed on ruggedized construction thing surface with anchor bolt, especially cannot erection bracket when pillarwork upper clearance is less, operate more complicated and larger to damage of structural object.
Be in the patent document of CN201320011706.9 at publication number, disclose a kind of method of fibrous composite grid ribs reinforcing underwater structure, this invention can improve the Compressive Bearing Capacity of ruggedized construction thing greatly, do not need to construct cofferdam structure, but the slider adopted in construction is steel sleeve or stainless steel sleeve pipe, needs more piece assembled, and every casing joint is made up of the two parts longitudinally cut open, slider two ends need to carry out concrete enclosing, operate comparatively loaded down with trivial details.Also need sleeve pipe or steel form cutting to reclaim after reinforcing completes, operating procedure is more complicated and be unfavorable for subaqueous construction.
Be in the patent document of CN201010193601.0 at publication number, disclose the reinforcement means of a kind of reinforced fiber composite cloth parcel water pile post, need before the use to repair breakage with mending mortar, and with doctor blade reparation to original structure size, then resin glue is spread upon cloth surface and reinforce.Higher to the requirement of diver when the method is used for subaqueous construction, operation is comparatively complicated, when being wound around fiber cloth reinforced pillarwork, is inevitably entered by portion of water parcel, affects the bond effect of resin glue and resin glue is easily aging.
The appearance of fibre reinforced composites and engineered cementitious composites (ECC), can well make up these defects.ECC, under shearing and axial load effect, shows higher ductility and the toughness of superelevation, far away higher than ordinary concrete and steel fibrous concrete.While strengthen pier stud capacity under axial, improve the anti-seismic performance of pillarwork.Fibrous composite has higher tensile strength, and rotproofness and durability better, not only can use as construction formwork, can also strengthen the capacity under axial of pier stud as reinforcement material, do not need dismounting after construction, simple to operate.
Summary of the invention
technical problem:the invention provides one and give full play to fibre reinforced composites base, fibre reinforced composites pipe, engineered cementitious composites (ECC) and fiber grid mesh sheet advantage separately, mutual effect of contraction between them makes the premium properties of single material be obtained for larger raising, and the fibre reinforced composites pipe constraint cement-base composite material effectively raising the bearing capacity of pillarwork, erosion resistibility, anti-seismic performance, ductility, antifatigue and endurance quality reinforces pillarwork.Consolidation effect of the present invention is remarkable, and method of operating is simple, and maintenance and the maintenance cost in later stage are lower, and the cycle in application life obviously extends.
technical scheme:fRP pipe constraint cement-base composite material of the present invention reinforces pillarwork, the fibre reinforced composites pipe comprising pier stud, be arranged on fibre reinforced composites base bottom described pier stud, arrange around described pier stud, the stop being arranged on fibre reinforced composites pipe upper end, be filled in engineered cementitious composites between fibre reinforced composites pipe and pier stud, fibre reinforced composites pipe lower end and fibre reinforced composites base are fixed together, and upper end is fixed together by stop and pier stud.Stop comprises screw rod, is fixed on the cuff of described screw rod one end, is fixed on the top flat of the screw rod other end, the stiffness spring be enclosed within screw rod, Y shape catch and limit screw cap, described screw rod one end is fixedly connected with pier stud surface through cuff, described Y shape catch is pressed on fibre reinforced composites inside pipe wall, and compress under the elastic force of stiffness spring, limit screw cap is arranged along screw rod, in order to adjust the horizontal level of Y type washer.
In preferred version of the present invention, fibre reinforced composites base material is carbon fiber, alkali-resistant glass fibre, aramid fiber or basalt fibre, or by two or more fibrous assorted fibre reinforced composite material above-mentioned.Fibre reinforced composites base forms by multiple segmented assemblies is combined and spliced, and upside arranges groove, and the lower end of described fibre reinforced composites pipe is directly inserted in groove.
In preferred version of the present invention, the material of fibre reinforced composites pipe is carbon fiber, aramid fiber, basalt fibre or alkali-resistant glass fibre, or by two or more fibrous fiber hybrid composite above-mentioned, fibre reinforced composites pipe is by the circulus thing of multiple FRP sheet of material through processing, assembling.
In preferred version of the present invention, the component of engineered cementitious composites is: cement, flyash, quartz sand, fiber, silicon ash, thickener and accelerating admixture.
In preferred version of the present invention, pier stud external surface is wound with fiber grid mesh sheet, fiber grid mesh sheet can be carbon fiber grille mesh sheet, aramid fiber grid mesh sheet, basalt grid mesh sheet, alkali-resistant glass fibre grid mesh sheet or assorted fibre grid mesh sheet, described assorted fibre grid mesh sheet refers to the grid mesh sheet with above-mentioned two kinds or two or more fiber, and fiber grid mesh sheet can be fixed on pier stud by anchoring pin.
The present invention utilizes fibre reinforced composites base, fibre reinforced composites pipe, cement-base composite material and grid mesh sheet to carry out strengthen to the pier stud of building, piling strtucture local or entirety, be particularly useful for the strengthen on underwater structures basis, the pillarwork after reinforcing has high bearing capacity, erosion resistibility, anti-seismic performance, ductility, antifatigue and endurance quality.This invention consolidation effect is remarkable, and method of operating is simple, and maintenance and the maintenance cost in later stage are lower, and the cycle in application life obviously extends.
beneficial effect:the present invention compared with prior art, has the following advantages:
1. stop accurate positioning, reusable edible
In Pier Column Reinforcing device disclosed in existing patent document and pertinent literature, square, convex or the anchor bolt of adopting as position limiter device more, and be arranged on template inwall, stop length is fixed.In the process of mounting limit device, often need the construction formwork in outside cutter to wear, destroy the globality of template.Although these stopping means can play spacing effect, comparatively large by the impact of construction environment in work progress, stop is easily slipped to sleeve bottom with watering building, loses position-limiting action.Secondly, if can not ensure that in work progress bilateral symmetry is constructed, be easy to cause template to produce laterally offset, and cannot adjust.
The stop location of the present invention's design is more accurate, and Y shape catch upper end is enclosed within screw rod, and lower end is connected with fibre reinforced composites inside pipe wall, and screw rod is fixed on works surface by circular cuff, and landing phenomenon can not occur.According to the requirement of Scheme of Strengthening, by regulating the position of limit screw cap, the length scale of stop can be adjusted at any time in work progress, guaranteeing that template position is accurate, not offseting.After construction terminates, stopping means can be laid down, recycle, save material.
2. easy construction, saving Construction Cost
Be in the patent document of CN201320011706.9 at publication number, disclose a kind of bracing means of pier stud under water, steel bracket fixing glass fiber sleeve is set at ruggedized construction thing top.Although overcome the defect of reinforcing pier stud under water and needing to construct cofferdam, but the requirement of this device to steel bracket is higher, need to be fixed on ruggedized construction thing surface with anchor bolt, especially cannot erection bracket when pillarwork upper clearance is less, operate more complicated, construction cost is higher, larger to damage of structural object.And when building grouting material, often building 15cm needs maintenance at least 8h, till the space so in sleeve is filled.
Adopt fibre reinforced composites base as construction support in the present invention, fibre reinforced composites pipe is directly inserted in the groove on base, play the effect of stop and confinement effect simultaneously, inside grooves is provided with compressibility weather strip, erection construction support is not needed during reinforcing, do not need construction cofferdam, easy to operate, be particularly useful for reinforcing underwater concrete pier stud.Grouting material adopt engineered cementitious composites (ECC material), do not need segmentation, multi-stage construction, can primary concreting shaping, obviously shorten the construction period.Fibre reinforced composites base assembles by more than two parts or two parts, and form of structure is varied, can need to carry out prefabricated processing according to stabilization works, compared with stainless steel steel, significantly can reduce construction cost.
3. fibre reinforced composites pipe environmental protection, intensity is high, consolidation effect is remarkable
Be in the patent document of CN200810035614.8, CN200920264541.X, CN201220475538.4 and CN201420198404.1 at publication number, all adopt ordinary steel or stainless-steel pipe as construction formwork, except tube quality is larger, perishable, the hoop tensile strength provided is inferior to FRP material, and iron and steel enterprise in process of production, not only need to drop into a large amount of physical resources and energy resource, also discharge a large amount of discarded objects: waste water, waste gas and solid waste.These discarded objects work the mischief to environment, form threat to human health.
The invention provides a kind of fibre reinforced composites pipe as construction formwork, the modulus of elasticity of FRP material is less, be about the 25%-75% of plain bars, and the tensile strength provided is about more than 10 times of plain bars, the hoop constraint intensity provided is higher, and consolidation effect is more remarkable.A kind of High-performance green environment-friendly materials of FRP material, have the performance characteristics such as high-strength light, corrosion-resistant, excellent in durability, construction be convenient, produce physical resources and energy data that FRP material does not need at substantial, can not work the mischief to environment.
3. sealing higher, to works not damaged
Be in the patent document of CN201420198404.1 at publication number, disclose a kind of hardened system of concrete column, this system adopts steel bushing as construction formwork, relies on anchor bolt firm template to be fixed on the surface of works.Be in the patent document of CN200910080051.9 at publication number, disclose a kind of method of fibrous composite grid ribs reinforcing underwater structure, the slider adopted in construction is the assembled steel sleeve of more piece or stainless steel sleeve pipe, and every casing joint is made up of the two parts longitudinally cut open, slider two ends need to carry out concrete enclosing.Because steel bushing quality is larger, perishable, need piecemeal to splice, therefore above two kinds of methods construction is all comparatively loaded down with trivial details, sealing is poor, also larger to damage of structural object.
Fibre reinforced composites pipe of the present invention is the circulus thing formed through processing, assembling by fibre reinforced composites thin plate, compared with the steel form assembled with more piece or stainless steel sleeve pipe, quality is less, and effectively raise the sealing performance of template, waterproof effect is better.Meanwhile, fibre reinforced composites pipe does not need to be fixed by anchor bolt, and just can only need to insert in fibre reinforced composites bases, fibre reinforced composites base is fixed on pillarwork by the fastening bolt of both sides, to works not damaged.
5. good integrity
Publication number is in CN201010193601.0 patent, disclose the reinforcement means of a kind of reinforced fiber composite cloth parcel water pile post, first with mending mortar, breakage is repaired before the use, and with doctor blade reparation to original structure size, subsequently in reinforcing pillarwork surface wrap cloth.Therefore, inevitably portion of water parcel is entered, affect the bond effect of resin glue and resin glue is easily aging.
In the present invention, thick, the fines of concrete and engineered cementitious composites and grid mesh sheet are entrenched togather mutually, epoxide-resin glue is not needed to bond, improve the adhesion strength at interface, avoid the aging generation damage of resin glue, the effect of contraction of fibre reinforced composites pipe, makes integrality performance of the structure be greatly improved simultaneously.
6. higher durability and rotproofness
FRP material is composited according to certain ratio by fibrous material and matrix material, has higher rotproofness and anti-fatigue performance, can use for a long time in the environment of acid, alkali, villaumite and humidity.Compared with traditional reinforcement means, the present invention effectively can avoid presstressed reinforcing steel, plain bars and steel plate easy-to-rust, epoxy resin easily peel off aging, affect structure usage space and the operation defect such as comparatively loaded down with trivial details.Construction base and construction formwork all adopt fibre reinforced composites, avoid using steel, while enhancing reinforce of structure effect, effectively can improve endurance quality and the decay resistance of works after reinforcing.
7. handsome in appearance, applied widely
This invention does not need special installation, takes up room less, does not affect the normal use of building and the normal traveling of vehicle, is especially suitable for and reinforces pillarwork under water, do not need to build cofferdam structure, reduce engineering quantity, save construction cost.Works smooth surface after reinforcing is smooth, without hollow phenomenon, handsome in appearance.The present invention has wide range of applications, and can be used for various reinforced concrete bridge pier, concrete pile rod structure, steel pipe pile and H profile steel basis etc., its section form can be circle, rectangle, ellipse and H type etc.
Accompanying drawing explanation
Fig. 1 is that fibre reinforced composites pipe of the present invention constraint cement-base composite material reinforces pillarwork schematic diagram (scheme one)
Fig. 2 is fibre reinforced composites pipe of the present invention constraint cement-base composite material reinforcing pillarwork schematic diagram (scheme two) Fig. 3 is stop schematic cross-section of the present invention
Fig. 4 is A-A schematic cross-section of the present invention
Fig. 5 is fibre reinforced composites base side view of the present invention
Fig. 6 is fibre reinforced composites pipe of the present invention overlap joint schematic diagram
In figure: 1 is stop; 2 is fibre reinforced composites pipe (FRP pipe); 3 is engineered cementitious composites (ECC); 4 is fibre reinforced composites base; 5 is compressible annular weather strip; 6 is anchoring pin; 7 is fiber grid mesh sheet; 8 is top flat; 9 is stiffness spring; 10 is Y shape catch; 11 is limit screw cap; 12 is screw rod; 13 is annular cuff; 14 is stainless steel fastening bolt; 15 is stainless steel self tapping screw; 16 is compressible strip weather strip.
Detailed description of the invention
Below in conjunction with embodiment and Figure of description, the present invention is further illustrated.The present invention is that a kind of fibre reinforced composites pipe constraint cement-base composite material reinforces pillarwork, as shown in Figure 1, the fibre reinforced composites pipe 2 mainly comprising pier stud, be arranged on fibre reinforced composites base 4 bottom described pier stud, arrange around described pier stud, be filled in engineered cementitious composites 3 between described fibre reinforced composites pipe 2 and pier stud, described fibre reinforced composites base 4 lower end is fixed together by compressible seal 5 and pier stud, and upper end is fixed together by stop 1 and pier stud.Stop 1 comprises screw rod 12, is fixed on the cuff 13 of described screw rod 12 one end, is fixed on the top flat 8 of screw rod 12 other end, the stiffness spring 9 be enclosed within screw rod 12, Y shape catch 10 and limit screw cap 11.Screw rod 12 one end is fixedly connected with pier stud surface through cuff 13, and Y shape catch 10 is pressed on fibre reinforced composites pipe 2 inwall, and compresses under the elastic force of stiffness spring 9, and limit screw cap 11 is arranged, in order to adjust the horizontal level of Y type washer 10 along screw rod.Y type catch 10 is by two block length bar shaped stainless steel steel discs through being welded, and one piece is " I " shape, and arrange along fibre reinforced composites pipe 2 inwall, another block is " V " shape, is enclosed within screw rod 12, shape similar " Y " shape after both connections.
Pillarwork mainly contains concrete pier, concrete pile, steel H pile and timber etc., and its section form mainly contains circle, rectangle, ellipse, H type etc.Now reinforce the cylindrical pier stud of underwater concrete for fibre reinforced composites pipe constraint cement-base composite material to be described:
Scheme one: for the reinforce of structure constructure scheme that degree of injury is less
1. first determine the quantity, type, section form and the strengthening length that need to repair pillarwork, send professional diver to determine the extent of damage needing to repair pillarwork and the real size measuring concrete cylindrical under water, formulate repairing and reinforcing scheme.
2. be prefabricated in the factory machining fiber reinforced composite material pipe 2, stop 1 and circular ring type fibre reinforced composites base fibre reinforced composites base 4, remove scum silica frost, the marine growth on concrete pier surface, the concrete that removing pier stud surface is loose, removes the mud etc. bottom pier stud.
3. compressibility weather strip 5 is filled in the draw-in groove inside annular fibre reinforced composites base 4, be fixed together by fastening bolt 14 and concrete pier column bottom.Fibre reinforced composites pipe 2 is enclosed within cylindrical pier stud surface, and be assembled into a ring sleeve with stainless steel self tapping screw 15, as shown in Figure 6, then the fibre reinforced composites pipe 2 assembled is fixed on the annular fibre reinforced composites base 4 of concrete pier column bottom.
4. on performance of concrete column confined top, distance about 5 ~ 10cm position, fibre reinforced composites pipe 2 top, mounting limit device 1, and Y shape catch 10 is inserted fibre reinforced composites pipe 2 inwall, regulate the position of limit screw cap 11, till making the length of stop 1 reach the requirement of Scheme of Strengthening.
5. according to cement: flyash: quartz sand: fiber: silicon ash: thickener: the proportions engineered cementitious composites (ECC material) 3 of accelerating admixture=1:4:0.15:0.002:0.05:0.005:0.005, the engineered cementitious composites 3 be stirred is poured in fibre reinforced composites pipe 2 by delivery conduit, along with building improving constantly of height, one annular cuff is evenly arranged, until engineered cementitious composites 3 evenly overflows from fibre reinforced composites pipe 2 upper end every 50cm ~ 100cm.
6. the stop 1 on pier stud top is laid down, construct complete.
Scheme two: for the reinforce of structure constructure scheme that degree of injury is larger
1. first determine the quantity, type, section form and the strengthening length that need to repair pillarwork, send professional diver to determine the extent of damage needing to repair pillarwork and the real size measuring concrete cylindrical under water, formulate repairing and reinforcing scheme.
2. be prefabricated in the factory machining fiber reinforced composite material pipe 2, stop 1 and circular ring type fibre reinforced composites base 4, remove scum silica frost, the marine growth on concrete pier surface, the concrete that removing pier stud surface is loose, remove the mud bottom pier stud, and the Corrosion Reinforcement surface exposed is processed etc.
3. blasting treatment is carried out to fiber grid mesh sheet 7 surface, to improve the interface binding intensity between fiber grid mesh sheet 7 and engineered cementitious composites 3.In reinforcing position, pier stud upper, middle and lower, often place is symmetrical arranged 4 length is that the anchoring pin 6(of 80mm supposes that back-up coat thickness is 30mm), and fiber grid mesh sheet is fixed on anchoring pin 6.
4. with reference to the step sequence in scheme one 3. ~ 6..
Above-described embodiment is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention; some improvement and equivalent replacement can also be made; these improve the claims in the present invention and are equal to the technical scheme after replacing, and all fall into protection scope of the present invention.

Claims (7)

1. a FRP pipe constraint cement-base composite material reinforces pillarwork, it is characterized in that, this structure comprises pier stud, be arranged on the fibre reinforced composites base (4) bottom described pier stud, around the fibre reinforced composites pipe (2) that described pier stud is arranged, be arranged on the stop (1) of fibre reinforced composites pipe (2) upper end, be filled in the engineered cementitious composites (3) between described fibre reinforced composites pipe (2) and pier stud, described fibre reinforced composites pipe (2) lower end and fibre reinforced composites base (4) are fixed together, upper end is fixed together by stop (1) and pier stud,
Described stop (1) comprises screw rod (12), be fixed on the cuff (13) of described screw rod (12) one end, be fixed on the top flat (8) of screw rod (12) other end, be enclosed within the stiffness spring (9) on screw rod (12), Y shape catch (10) and limit screw cap (11), described screw rod (12) one end is fixedly connected with pier stud surface through cuff (13), described Y shape catch (10) is pressed on fibre reinforced composites pipe (2) inwall, and compress under the elastic force of stiffness spring (9), limit screw cap (11) is arranged along screw rod (12), in order to adjust the horizontal level of Y type washer (10).
2. FRP pipe constraint cement-base composite material according to claim 1 reinforces pillarwork, it is characterized in that, described fibre reinforced composites base (4) material is carbon fiber, alkali-resistant glass fibre, aramid fiber or basalt fibre, or by two or more fibrous assorted fibre reinforced composite material above-mentioned, fibre reinforced composites base (4) forms by multiple segmented assemblies is combined and spliced, upside arranges groove, and the lower end of described fibre reinforced composites pipe (2) is directly inserted in groove.
3. FRP pipe constraint cement-base composite material according to claim 1 reinforces pillarwork, it is characterized in that, described fibre reinforced composites pipe (2) material is carbon fiber, aramid fiber, basalt fibre or alkali-resistant glass fibre, or two or more fibrous fiber hybrid composite above-mentioned, fibre reinforced composites pipe (2) is by the circulus thing of multiple FRP sheet of material through processing, assembling.
4. the FRP pipe constraint cement-base composite material according to claim 1,2 or 3 reinforces pillarwork, it is characterized in that, the component of described engineered cementitious composites (3) is: cement, flyash, quartz sand, fiber, silicon ash, thickener and accelerating admixture.
5. the FRP pipe constraint cement-base composite material according to claim 1,2 or 3 reinforces pillarwork, and it is characterized in that, described pier stud external surface is wound with fiber grid mesh sheet (7).
6. FRP pipe constraint cement-base composite material according to claim 5 reinforces pillarwork, it is characterized in that, described fiber grid mesh sheet is carbon fiber grille mesh sheet, aramid fiber grid mesh sheet, basalt grid mesh sheet, alkali-resistant glass fibre grid mesh sheet or assorted fibre grid mesh sheet, and described assorted fibre grid mesh sheet refers to the grid mesh sheet with above-mentioned two kinds or two or more fiber.
7. FRP pipe constraint cement-base composite material according to claim 5 reinforces pillarwork, and it is characterized in that, described fiber grid mesh sheet (7) is fixed on pier stud by anchoring pin (6).
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CN105862574A (en) * 2016-05-27 2016-08-17 连云港奥尼斯环保设备有限公司 Glass fiber reinforced plastic pier for bridge
CN105822330A (en) * 2016-06-01 2016-08-03 山东深博巷道支护技术有限公司 GFRP tube concrete support for underground engineering supporting and construction technology thereof
CN108589515A (en) * 2018-05-10 2018-09-28 长安大学 A method of shake rear abutment is reinforced using ultra-tough fiber concrete
CN108589515B (en) * 2018-05-10 2019-04-26 长安大学 A method of shake rear abutment is reinforced using ultra-tough fiber concrete
CN110725426A (en) * 2019-09-09 2020-01-24 维特国际新材料(武汉)有限公司 Shockproof reinforcing structure based on cement-based composite material and use method

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