CN108342995A - The fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete - Google Patents
The fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete Download PDFInfo
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- CN108342995A CN108342995A CN201810049083.1A CN201810049083A CN108342995A CN 108342995 A CN108342995 A CN 108342995A CN 201810049083 A CN201810049083 A CN 201810049083A CN 108342995 A CN108342995 A CN 108342995A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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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
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Abstract
The invention belongs to technical field of civil engineering, more particularly to the fiber cloth reinforced pillarwork of steel wire of a kind of overcoating ultra-high performance concrete.The fiber cloth reinforced pillarwork of steel wire of the overcoating ultra-high performance concrete of the present invention includes reinforcing pier stud cylinder and being arranged from inside to outside successively in FRP cloth, steel screen layer and the ultra-high performance concrete layer for reinforcing pier stud cartridge outer surface.The present invention incorporates the strong advantage of fibre reinforced composites tensile capacity, the brittle failure mode of FRP can be improved, overcome slow down FRP agings, the shortcomings that adhesive property of FRP binders is easily influenced by adverse circumstances, structure is high with yield load after reinforcing, bearing capacity deposit is big, ductility is good, the advantages that anti-seismic performance is superior, and structure durability improves, this structure construction is convenient and efficient, consolidation effect is stablized obviously, is interfered by environmental factor small.
Description
Technical field
The invention belongs to technical field of civil engineering more particularly to a variety of composite material reinforced technologies, more particularly to a kind of
The fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete.
Background technology
The civil engineering construction of developed country will generally undergo 3 stages：Newly-built stage on a large scale, newly-built and maintenance and reinforcement
Develop simultaneously stage and repair, reinforcing, alteration stage to old structure is transformed.Department of Labor's door is once in market prediction at the end of the 20th century
It is foretold in report, structural repair reinforces one of the industry that industry will be 21 century mouth the hottest.How to existing engineering structure
It safeguarded, be transformed and reinforced, have become a very important project of external civil engineering industry.
The gross area of the existing various buildings or structures in China is at least in 10,000,000,000 m at present2More than, and quite a few is built
The service phase that (structure) builds object has been more than 50 years, steps into " person in middle and old age's phase ", there are various security risks, such as some
" old structure " cannot be satisfied new codes and standards requirement now according to old Specification Design；Some " old structures " in use,
Because aging and the performance degradation of material has occurred in the influences such as internal, external, human factor, this damage accumulation will cause structural
It can deterioration, depression of bearing force, endurance quality reduction.To meet structure normal use performance and bearing capacity demand, it is necessary to certain
Structure carries out reinforcing and reinforcement.Some " new constructions " cause material due to the technology and management defect in prospecting, design and construction
Expect that performance not up to requires, intensity, rigidity, the endurance quality of structure are insufficient；Also some structures, existing design function cannot
Meet currently used requirement, needs to carry out it functional promotion and transformation.For above-mentioned " old or new " buildings or structures,
If taking the measure of reinforcement and strengthening not in time, building will face great security risk.Therefore, in China to existing knot
An also very important project is safeguarded, is transformed and reinforced to structure.
Fibre reinforced plastics (Fiber Reinforced Polymer, FRP) have lightweight, high-strength, corrosion-resistant etc. excellent
Characteristic, civil engineering is reinforced, reinforcement field has obtained commonly used, according to the difference of fibre reinforcement, FRP can be divided into glass
Fibre reinforced plastics (GFRP), carbon fibre reinforced plastic (CFRP), aromatic polyamide fiber reinforced plastics (AFRP), basalt fibre enhancing
Plastics (BFRP) etc..FRP is used in ruggedized construction, and the ratio of strength to weight is high, and consolidation effect is notable, and corrosion resistance is strong, and endurance quality is good, is fitted
It is wide with range.However, which kind of FRP, limit of stretch fracture is brittle fracture, and shows as linear stress-strain and close
It is to be broken undergone deformation very little after structure yields to FRP, requires not to be consistent with structure ductility；Simultaneously be also embodied by it is each to
The opposite sex, the intensity and elasticity modulus of machine direction are higher, and the intensity in vertical fibers direction and elasticity modulus are relatively low, conventional to wind
The FRP of amount is difficult to obtain the raising of multidirectional bearing capacity.In addition, compared with steel, fibrous material intensity has larger discreteness, and
Compared with concrete, the fire protecting performance of fibrous material is poor.That there are high temperature resistances is poor for simple FRP methods, is not suitable for humidity
Concrete surface, construction at low temperature difficulty is big, the shortcomings of being easy to happen interfacial failure, is expensive.
Structural column in bridge, building, is most basic, most important structural bearing component, its safety often determines
The security performance of total.Structural column often will appear Lack of support, energy dissipation capability reduction, ductility deficiency etc. and ask
Topic, reinforcement and strengthening become highly important project.There are many reinforcement means of engineering center pillar, such as increasing section method for strengthening, outsourcing
Fiber reinforced method, reinforcement by sticking of sheets etc..Above several reinforcement means are primarily present steel plate and presstressed reinforcing steel easy-to-rust, resin are easy-peel
It falls aging, influence the problems such as structure use space and operation are relatively complicated.
Invention content
Technical problem to be solved by the invention is to provide a kind of steel wire fiber cloths of overcoating ultra-high performance concrete to add
Gu pillarwork effectively overcomes the defect of the prior art.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of steel wire of overcoating ultra-high performance concrete is fine
Wei Bu reinforces pillarwork, including reinforces pier stud cylinder and be arranged from inside to outside successively in above-mentioned reinforcing pier stud cartridge outer surface
FRP cloth, steel wire and ultra-high performance concrete layer.
The beneficial effects of the invention are as follows：The strong advantage of fibre reinforced composites tensile capacity is incorporated, can improve FRP's
Brittle failure mode, overcome slow down FRP agings, the shortcomings that adhesive property of FRP binders is easily influenced by adverse circumstances, after reinforcing
Structure has the advantages that yield load is high, bearing capacity deposit is big, ductility is good, and anti-seismic performance is superior, and structure durability improves, this knot
Structure convenient and quick construction, consolidation effect are stablized obviously, are interfered by environmental factor small.
Based on the above technical solution, the present invention can also be improved as follows.
Further, above-mentioned FRP cloth is one in carbon cloth, glass fabric, basalt fiber cloth, aryl fiber cloth
Kind or at least two Compound Fabrics that are combined with each other.
Advantageous effect using above-mentioned further scheme is that corrosion resistance is strong, applied widely.
Further, above-mentioned FRP cloth is wrapped in above-mentioned reinforcing pier stud cartridge outer surface, and at least winds one layer.
Advantageous effect using above-mentioned further scheme is to construct quickly, conveniently.
Further, above-mentioned steel wire is wrapped in above-mentioned FRP cloth outer surface, and at least winds one layer, single in above-mentioned steel wire
Root gauge of wire is not more than 8mm, and the tensile strength of above-mentioned steel wire is 1000MPa~3500MPa.
Advantageous effect using above-mentioned further scheme is that steel wire tensile strength is high, promotes entire reinforcing pillarwork
Ductility and structural strength.
Further, respectively by resin-bonded between above-mentioned reinforcing pier stud cylinder, FRP cloth and steel wire three.
Advantageous effect using above-mentioned further scheme is that three is bonded as entirety, facilitates construction, it is ensured that reinforcement material
Globality.
Further, above-mentioned resin is one kind of epoxide-resin glue or vinylite or polyurethane resin.
Advantageous effect using above-mentioned further scheme is that adhesive property is good.
Further, above-mentioned ultra-high performance concrete layer is by pouring or injection molding is in the outer surface of above-mentioned steel wire.
Advantageous effect using above-mentioned further scheme is to construct quickly, conveniently.
Further, the compression strength of above-mentioned ultra-high performance concrete layer be 100~300MPa, 40~60GPa of elasticity modulus,
Chloride diffusion coefficient ＜ 0.01 × 10-11m2/s。
Advantageous effect using above-mentioned further scheme is the better performances of ultra-high performance concrete layer, improves entire add
Gu the performance of pillarwork, the durability of enhancing structure and can accelerate construction progress..
Further, the thickness of above-mentioned ultra-high performance concrete layer is 20~200mm.
Advantageous effect using above-mentioned further scheme is reasonable design, it is ensured that entire to reinforce the economic and comprehensive of pillarwork
Close better performances.
Further, casing play is equipped in above-mentioned ultra-high performance concrete layer.
Advantageous effect using above-mentioned further scheme be can improve the entire structural strength for reinforcing pillarwork, ductility and
Energy dissipation capacity.
Description of the drawings
Fig. 1 is the sectional view of the fiber cloth reinforced pillarwork of steel wire of the overcoating ultra-high performance concrete of the present invention.
In attached drawing, parts list represented by the reference numerals are as follows：
1, pier stud cylinder is reinforced, 2, FRP cloth, 3, steel wire, 4, ultra-high performance concrete layer.
Specific implementation mode
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment：As shown in Figure 1, the fiber cloth reinforced pier stud knot of the steel wire of the overcoating ultra-high performance concrete of the present embodiment
Structure includes reinforcing pier stud cylinder 1 and being arranged FRP cloth 2 in above-mentioned 1 outer surface of reinforcing pier stud cylinder, steel wire from inside to outside successively
3 and ultra-high performance concrete layer 4.
Compared with prior art, the beneficial effects of the invention are as follows：
1) use ultra-high performance concrete (UHPC), steel wire and FRP cloth that can reduce the entire section for reinforcing pillarwork
Size；
2) the good workabilities of UHPC and volume stability, and UHPC hardening times are short, are convenient for rapid reinforcement and shortening
Construction period；
3) steel wire and FRP are used in mixed way, and improve the ductility of FRP, structure is finally made to have apparent yield load,
Improve the ductility of structure；
4) range of single winding steel wire and single winding FRP reinforcement means is expanded；
5) UHPC layers are cladded with, the durability of structure is greatly improved；
6) UHPC layers are cladded with, reduces interference and adverse effect of the external environment to consolidation effect, consolidation effect is stablized bright
It is aobvious；
7) it is cohered by resin glue and is reinforced pier stud, FRP, steel wire, overcoating UHPC layers are excellent with steel wire adhesive property,
The final globality for enhancing composite consolidation material and reinforced structure.
8) application of high tensile steel wire reduces the dosage of FRP material, saves cost.
Preferably, above-mentioned FRP cloth 2 is one in carbon cloth, glass fabric, basalt fiber cloth, aryl fiber cloth
Kind or at least two Compound Fabrics that are combined with each other.
Preferably, above-mentioned FRP cloth 2 is wrapped in above-mentioned 1 outer surface of reinforcing pier stud cylinder, and one layer is at least wound, and ensured
Winding is uniform, the outer surface for reinforcing pier stud cylinder 1 can be completely covered, there is no blind area, the selection of the number of plies is according to practical need
It asks, if desired bearing capacity and ductility are higher, then can suitably increase the winding number of plies of FRP cloth, conversely, reducing the winding number of plies.
Preferably, above-mentioned steel wire 3 is wrapped in 2 outer surface of above-mentioned FRP cloth, and one layer is at least wound, in above-mentioned steel wire 3
The diameter of individual wire is not more than 8mm, and the tensile strength of above-mentioned steel wire is 1000MPa~3500MPa, can be according to practical tension
The demand of intensity and structural strength selects different layers of steel wires 3 to meet the intensity and ductility demand of different column structures.
Steel wire can be zinc coated high strength steel silk, common high tensile steel wire, stainless steel high tensile steel wire etc. in above-mentioned steel wire 3,
Tensile strength is higher.
Preferably, respectively by resin-bonded between above-mentioned reinforcing pier stud cylinder 1,3 three of FRP cloth 2 and steel wire, three
It is linked as entirety, structural strength is higher, and construction is also fairly simple, quick.
Preferably, above-mentioned resin is one kind of epoxide-resin glue or vinylite or polyurethane resin.
Preferably, above-mentioned ultra-high performance concrete layer 4 is by pouring or injection molding is in the outer surface of above-mentioned steel wire 3,
Its construction is fast, conveniently.
Preferably, the compression strength of above-mentioned ultra-high performance concrete layer 4 is 100~300MPa, elasticity modulus 40~
0.01 × 10-11m2/s of 60GPa, chloride diffusion coefficient ＜.
The material component of ultra-high performance concrete should meet following condition in above-mentioned ultra-high performance concrete layer 4：Cement, bone
Expect (having non-coarse aggregate), silicon ash, flyash, water-reducing agent, steel fibre (whether there is or not) and water, specific proportioning can be according to existing
The general proportioning of the ultra-high performance concrete layer 4 of technology.
Preferably, the thickness of above-mentioned ultra-high performance concrete layer 4 is 20~200mm, the Sizes, intensity meets general
Engineering demand can also be added and subtracted according to Practical Project demand.
Preferably, casing play is equipped in above-mentioned ultra-high performance concrete layer 4, to promote the intensity of entire column structure and prolong
Property.
Above-mentioned casing play can be steel reinforcement cage or steel structure framework etc..
Specific construction mode is listed below several：
The first：
(1) it reinforces pier stud cylinder 1 and is surface-treated (polishing, dabbing, cleaning etc.)；
(2) FRP cloth 2 is selected according to design requirement, selects resin material to make interfacial agents, reinforcing pier stud cylinder after treatment
1 surface and FRP cloth surface brush interfacial agents wind FRP cloth 2；
(3) steel wire 3 (corresponding steel wire weld also can be selected to form) is selected according to design requirement, waits for FRP cloth 2 and reinforces pier
After the interfacial agents solidification of 1 contact surface of column cylinder, resin material is selected to make interfacial agents, along 2 surface wrap steel wire 3 of FRP cloth and admittedly
Fixed, at steel wire 3 and 2 contact surface of FRP cloth and surrounding brush interfacial agents, maintenance wait for its solidification；
(4) select the UHPC that either preparation meets design requirement index that UHPC is poured or sprayed according to design requirement extremely
The reinforcing area of 3 outer surface of steel wire, and meet design thickness.
(5) it presses design code and conserves UHPC to predetermined age.
Second：
(1) it reinforces pier stud cylinder 1 and is surface-treated (polishing, dabbing, cleaning etc.)；
(2) FRP cloth 2 is selected according to design requirement, selects resin material to make interfacial agents, reinforcing pier stud cylinder after treatment
2 surface brush interfacial agents of 1 surface and FRP cloth wind FRP cloth 2；
(3) steel wire 3 (corresponding steel wire weld also can be selected to form) is selected according to design requirement, waits for FRP cloth 2 and reinforces pier
After the interfacial agents solidification of 1 contact surface of column cylinder, resin material is selected to make interfacial agents, along 2 surface wrap steel wire 3 of FRP cloth and admittedly
Fixed, at steel wire 3 and 2 contact surface of FRP cloth and surrounding brush interfacial agents, maintenance wait for its solidification；
(4) it is made according to design requirement and fixes steel reinforcement cage in UHPC layers overcoating；
(5) select the UHPC that either preparation meets design requirement index that UHPC is poured or sprayed according to design requirement extremely
The reinforcing area of 3 outer surface of steel wire, and meet design thickness.
(6) it presses design code and conserves UHPC to predetermined age.
The third：
(1) it reinforces pier stud cylinder 1 and is surface-treated (polishing, dabbing, cleaning etc.)；
(2) FRP cloth 2 is selected according to design requirement, selects resin material to make interfacial agents, reinforcing pier stud cylinder after treatment
2 surface brush interfacial agents of 1 surface and FRP cloth wind FRP cloth 2；
(3) steel wire 3 (corresponding steel wire weld also can be selected to form) is selected according to design requirement, waits for FRP cloth 2 and reinforces pier
After the interfacial agents solidification of 1 contact surface of column cylinder, resin material is selected to make interfacial agents, along 2 surface wrap steel wire 3 of FRP cloth and admittedly
Fixed, at steel wire 3 and 2 contact surface of FRP cloth and surrounding brush interfacial agents, maintenance wait for its solidification；
(4) it is made according to design requirement and fixes type steel skeleton in UHPC layers overcoating；
(5) select the UHPC that either preparation meets design requirement index that UHPC is poured or sprayed according to design requirement extremely
The reinforcing area of 3 outer surface of steel wire, and meet design thickness.
(6) it presses design code and conserves UHPC to predetermined age.
It should be noted that：The number of plies and steel wire 3 of FRP cloth 2 are determined according to actual demand in the construction process
The number of plies, and determine the winding sequence of FRP cloth 2 and steel wire 3, and brush, impregnating resin realizes FRP cloth 2 and reinforces pier stud cylinder 1
Bonding and FRP cloth 2 and steel wire 3 interlaminar bonding, the skeleton of overcoating UHPC layers 4 is made and fixed according to design requirement
Layer is selected or is prepared the UHPC for meeting design requirement, sprays or pour the UHPC layers of specific thickness, and conserve molding, in this way
It is formed a kind of overcoating fiber cloth reinforced pillarwork of ultra-high performance concrete steel wire.
It should be noted that：Reinforcing pier stud cylinder 1 can be that cylinder, square column or cross section are the solid of (rule) polygon
Or hollow cylinder structure, suitable specification is selected according to Specific construction situation when construction.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete, it is characterised in that：Including reinforcing pier
Column cylinder (1) and be arranged from inside to outside successively it is described reinforce the FRP cloth (2) of pier stud cylinder (1) outer surface, steel wire (3) and
Ultra-high performance concrete layer (4).
2. a kind of fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete according to claim 1,
It is characterized in that：The FRP cloth (2) is one kind in carbon cloth, glass fabric, basalt fiber cloth, aryl fiber cloth, or
At least two Compound Fabrics being combined with each other.
3. a kind of fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete according to claim 2,
It is characterized in that：The FRP cloth (2) is wrapped in reinforcing pier stud cylinder (1) outer surface, and at least winds one layer.
4. a kind of fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete according to claim 1,
It is characterized in that：The steel wire (3) is wrapped in the FRP cloth (2) outer surface, and at least winds one layer, in the steel wire (3)
The diameter of individual wire is not more than 8mm, and the tensile strength of the steel wire is 1000MPa~3500MPa.
5. a kind of fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete according to claim 1,
It is characterized in that：Respectively by resin-bonded between the reinforcing pier stud cylinder (1), FRP cloth (2) and steel wire (3) three.
6. a kind of fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete according to claim 5,
It is characterized in that：The resin is one kind of epoxide-resin glue or vinylite or polyurethane resin.
7. a kind of fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete according to claim 1,
It is characterized in that：The ultra-high performance concrete layer (4) by pour or injection molding the steel wire (3) outer surface.
8. a kind of fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete according to claim 7,
It is characterized in that：The compression strength of the ultra-high performance concrete layer (4) is 100~300MPa, 40~60GPa of elasticity modulus, chlorine
Ionic diffusion coefficient ＜ 0.01 × 10-11m2/s。
9. according to a kind of fiber cloth reinforced pier of steel wire of overcoating ultra-high performance concrete of claim 1 to 8 any one of them
Rod structure, it is characterised in that：The thickness of the ultra-high performance concrete layer (4) is 20~200mm.
10. a kind of fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete according to claim 9,
It is characterized in that：Casing play is equipped in the ultra-high performance concrete layer (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810049083.1A CN108342995A (en) | 2018-01-18 | 2018-01-18 | The fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810049083.1A CN108342995A (en) | 2018-01-18 | 2018-01-18 | The fiber cloth reinforced pillarwork of steel wire of overcoating ultra-high performance concrete |
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| CN108342995A true CN108342995A (en) | 2018-07-31 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824228A (en) * | 2018-08-28 | 2018-11-16 | 南京林业大学 | A kind of method of bamboo combined housing reinforced bridge pier |
| CN108824227A (en) * | 2018-08-28 | 2018-11-16 | 南京林业大学 | A kind of aluminum alloy coiled materials reinforcing pillarwork |
| CN109610300A (en) * | 2018-12-27 | 2019-04-12 | 东南大学 | Cylinder pier anti-seismic performance lifting construction based on the constraint of UHPC cuff |
| CN109812044A (en) * | 2019-02-28 | 2019-05-28 | 盐城工学院 | A kind of concrete column anti-corrosion reinforcing wind |
| CN111535156A (en) * | 2020-05-08 | 2020-08-14 | 深圳市市政设计研究院有限公司 | FRP (fiber reinforced plastic) -concrete combined bridge structure and construction method thereof |
| CN111677007A (en) * | 2020-05-27 | 2020-09-18 | 浙江大学 | Comprehensive pipe gallery adopting sprayed ultrahigh-toughness cement-based composite material and construction method thereof |
| CN112813792A (en) * | 2021-02-22 | 2021-05-18 | 重庆交通大学 | Method for reinforcing arch bridge by combination of UHPC injection and bar planting |
| CN113898373A (en) * | 2021-10-19 | 2022-01-07 | 辽宁工业大学 | FRP-PVC membrane shell filled with self-compacting coal gangue concrete fireproof combined coal pillar and reinforcing method |
| CN114164749A (en) * | 2021-12-16 | 2022-03-11 | 武汉理工大学 | High-crack-resistance anti-corrosion pier structure and construction method thereof |
| CN114482591A (en) * | 2020-11-12 | 2022-05-13 | 长安大学 | Method for reinforcing reinforced concrete column and structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108824228A (en) * | 2018-08-28 | 2018-11-16 | 南京林业大学 | A kind of method of bamboo combined housing reinforced bridge pier |
| CN108824227A (en) * | 2018-08-28 | 2018-11-16 | 南京林业大学 | A kind of aluminum alloy coiled materials reinforcing pillarwork |
| CN109610300A (en) * | 2018-12-27 | 2019-04-12 | 东南大学 | Cylinder pier anti-seismic performance lifting construction based on the constraint of UHPC cuff |
| CN109812044A (en) * | 2019-02-28 | 2019-05-28 | 盐城工学院 | A kind of concrete column anti-corrosion reinforcing wind |
| CN111535156A (en) * | 2020-05-08 | 2020-08-14 | 深圳市市政设计研究院有限公司 | FRP (fiber reinforced plastic) -concrete combined bridge structure and construction method thereof |
| CN111677007A (en) * | 2020-05-27 | 2020-09-18 | 浙江大学 | Comprehensive pipe gallery adopting sprayed ultrahigh-toughness cement-based composite material and construction method thereof |
| CN114482591A (en) * | 2020-11-12 | 2022-05-13 | 长安大学 | Method for reinforcing reinforced concrete column and structure thereof |
| CN112813792A (en) * | 2021-02-22 | 2021-05-18 | 重庆交通大学 | Method for reinforcing arch bridge by combination of UHPC injection and bar planting |
| CN113898373A (en) * | 2021-10-19 | 2022-01-07 | 辽宁工业大学 | FRP-PVC membrane shell filled with self-compacting coal gangue concrete fireproof combined coal pillar and reinforcing method |
| CN113898373B (en) * | 2021-10-19 | 2023-10-13 | 辽宁工业大学 | FRP-PVC film shell internally filled with self-compaction gangue concrete fireproof combined coal column and reinforcing method |
| CN114164749A (en) * | 2021-12-16 | 2022-03-11 | 武汉理工大学 | High-crack-resistance anti-corrosion pier structure and construction method thereof |
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Application publication date: 20180731 |