CN102392541A - Method for reinforcing concrete column by utilizing PVC-FRP (Poly Vinyl Chloride-Fiberglass Reinforced Plastic) pipe - Google Patents
Method for reinforcing concrete column by utilizing PVC-FRP (Poly Vinyl Chloride-Fiberglass Reinforced Plastic) pipe Download PDFInfo
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- CN102392541A CN102392541A CN2011103610867A CN201110361086A CN102392541A CN 102392541 A CN102392541 A CN 102392541A CN 2011103610867 A CN2011103610867 A CN 2011103610867A CN 201110361086 A CN201110361086 A CN 201110361086A CN 102392541 A CN102392541 A CN 102392541A
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- concrete column
- pvc
- frp
- pipe
- reinforcing
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- 239000004567 concrete Substances 0.000 title claims abstract description 34
- 230000003014 reinforcing Effects 0.000 title abstract description 12
- 239000011152 fibreglass Substances 0.000 title abstract 2
- 229920002554 vinyl polymer Polymers 0.000 title abstract 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 19
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 210000003205 Muscles Anatomy 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 6
- 239000000835 fiber Substances 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 3
- 229920000049 Carbon (fiber) Polymers 0.000 abstract 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 1
- 239000004760 aramid Substances 0.000 abstract 1
- 229920003235 aromatic polyamide Polymers 0.000 abstract 1
- 239000004917 carbon fiber Substances 0.000 abstract 1
- 239000003365 glass fiber Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001070 adhesive Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Abstract
The invention provides a method for reinforcing a concrete column by utilizing a PVC-FRP (Poly Vinyl Chloride-Fiberglass Reinforced Plastic) pipe and belongs to the technical field of civil engineering. The method is suitable for maintaining and reinforcing the concrete columns in civil buildings, industrial plants and bridge structures. By mainly aiming at the reinforced concrete column, a PVC pipe is sheathed outside the concrete column, a reinforcing steel bar is configured in the PVC pipe, FRP cloth is wound outside the PVC pipe to form restraint action on the concrete column with the PVC pipe, and the internal pressure of the PVC pipe sheathed outside should reach above 1Mpa. The FRP cloth can adopt a carbon fiber composite material, a glass fiber composite material or an aramid fiber composite material. Compared with the traditional reinforcing method, the method for reinforcing the concrete column by utilizing the PVC-FRP pipe has the advantages that the reinforced concrete column is high in bearing capacity, small in cross section size and good in ductility and durability; and the method is convenient to construct, low in construction price and the like.
Description
Technical field
The invention belongs to technical field of civil engineering, be specifically related to a kind of method with PVC-FRP pipe reinforced concrete column, this method is applicable to the maintenance and the reinforcing of concrete column in civilian construction, industrial premises and the bridge construction.
Background technology
Reinforced concrete structure is in long-term use; Inner, outside, and the human factor effect under; As time goes on, with the aging and structural damage of generating material, the accumulation of this damage will cause structural performance deterioration, bearing capacity decline, endurance quality to reduce.In order to make structure still can satisfy design specifications, must reinforce and reinforcement these structures about the requirement of bearing capacity with normal functional performance.
Existing reinforcing mainly contains enlarging section method, encased steel reinforcing method and FRP reinforcing method with the mode of reinforcement.Mainly there is following shortcoming in the enlarging section method: increase the area of structure, reduce usage space; Need formwork, operations such as form removal, the construction period is longer; It is not remarkable that bearing capacity improves effect.Mainly there is following shortcoming in the encased steel reinforcing method: rolled steel dosage is big, and expense is high; Structure durability is relatively poor; The steel plate end is difficult for anchoring.Mainly there is following shortcoming in the FRP reinforcing method: the FRP consumption is many, and expense is high; The concrete lateral deformation is inhomogeneous under the load action, makes FRP produce stress and concentrates, and causes the FRP utilization rate low.
Summary of the invention
The present invention is directed to shortcoming and deficiency that existing reinforcement means exists, a kind of method with PVC-FRP pipe reinforced concrete column is provided, these method concrete steps are following:
(1) former concrete column surface is handled, remove the topping of former concrete column;
(2) according to requirement for bearing capacity, vertical muscle of configuration and stirrup around former concrete column, and assembling reinforcement cage;
(3) pvc pipe is sawn into two parts along diameter, is enclosed within the outside of concrete column, be bonded to integral body to two parts pvc pipe with epoxy resin then;
(4) in the surperficial precoating layer glue of pvc pipe, and make epoxy resin fully soak into FRP cloth, twine FRP cloth, maintenance a period of time, process the PVC-FRP pipe according to certain hoop spacing;
(5) concreting between PVC-FRP pipe and former concrete column forms PVC-FRP pipe reinforced concrete column.
The present invention has the following advantages:
(1) reduces the sectional dimension of member;
(2) the PVC-FRP pipe can serve as template, saves operations such as formwork, form removal, shortens construction period;
(3) utilization rate of FRP material is high;
(4) bearing capacity is high, light weight;
(5) consumption of FRP material is less, saves cost;
(5) excellent in durability;
(6) integrality performance of the structure is good.
The inventive method is compared with traditional reinforcement means, has that bearing capacity height, sectional dimension are little, an advantage such as ductility and good endurance, easy construction, cost are low, has broad application prospects and development space.
Description of drawings
Figure: be the cross sectional representation of PVC-FRP pipe reinforced concrete column.
Among the figure: 1-pvc pipe; 2-former concrete column; 3-adhesive glue; 4-after join vertical muscle; 5-after join stirrup; 6-FRP cloth; 7-back pouring concrete.
The specific embodiment
(1) former concrete column 2 is handled, removed the topping of former concrete column 2, remove the floating dust on concrete column surface; For strengthening adhesion stress and the globality between back pouring concrete and the former concrete column, guarantee its co-operation, should make former concrete surface coarse as far as possible; And back pouring concrete strength grade is greater than former concrete column strength grade.
(2) according to requirement for bearing capacity, calculate the required quantity of reinforcement of concrete column with reference to China's relevant design standard, around former concrete column 2, dispose longitudinal stress reinforcing bar 4, lateral tie 5, and the assembling reinforcement cage.
(3) according to requirement for bearing capacity; Select the pvc pipe 1 (press in the pvc pipe and reach more than the 1Mpa) of suitable cross-section size; Straight line is sawn into two parts along the center of circle with pvc pipe 1, the pvc pipe that cuts is glued with adhesive glue 3, and guarantee that the center of gravity of pvc pipe 1 overlaps with the center of gravity of former concrete column 2.
(4) stir layer glue, equably it is brushed in pvc pipe 1 surface, FRP cloth 6 is fully soaked into epoxy resin, twine FRP cloth 6 according to the FRP hoop spacing and the strip width of Design of Bearing Capacity with cylinder; Constantly extruding to guarantee globality between FRP cloth 6 and the pvc pipe 1, does not allow bubble in the winding process; Whole winding process repeats, up to reaching the needed fiber number of plies.After FRP cloth 6 twines, PVC-FRP is managed the maintenance certain hour,, form the PVC-FRP pipe up to epoxy cure.
(5) concreting 7 between PVC-FRP pipe and former concrete column 2, the maintenance certain hour forms PVC-FRP pipe reinforced concrete column.
Claims (1)
1. method with PVC-FRP pipe reinforced concrete column is characterized in that these method concrete steps are following:
(1) former concrete column surface is handled, remove the topping of former concrete column;
(2) according to requirement for bearing capacity, vertical muscle of configuration and stirrup around said former concrete column, and assembling reinforcement cage;
(3) pvc pipe is sawn into two parts along diameter, is enclosed within the outside of concrete column, be bonded to integral body to two parts pvc pipe with epoxy resin then;
(4) in the surperficial precoating layer glue of said pvc pipe, and make epoxy resin fully soak into FRP cloth, twine FRP cloth, maintenance a period of time, process the PVC-FRP pipe according to certain hoop spacing;
(5) concreting between said PVC-FRP pipe and former concrete column forms PVC-FRP pipe reinforced concrete column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110361086 CN102392541B (en) | 2011-11-15 | 2011-11-15 | Method for reinforcing concrete column by utilizing PVC-FRP (Poly Vinyl Chloride-Fiberglass Reinforced Plastic) pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110361086 CN102392541B (en) | 2011-11-15 | 2011-11-15 | Method for reinforcing concrete column by utilizing PVC-FRP (Poly Vinyl Chloride-Fiberglass Reinforced Plastic) pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102392541A true CN102392541A (en) | 2012-03-28 |
| CN102392541B CN102392541B (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110361086 Active CN102392541B (en) | 2011-11-15 | 2011-11-15 | Method for reinforcing concrete column by utilizing PVC-FRP (Poly Vinyl Chloride-Fiberglass Reinforced Plastic) pipe |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031928A (en) * | 2013-01-07 | 2013-04-10 | 黑龙江大学 | PVC tube-based sea sand/concrete column coated with FRP cloth |
| CN103206042A (en) * | 2013-03-18 | 2013-07-17 | 广西大学 | PVC (polyvinyl chloride) pipe constrained and rectangular stirrup hooped reinforced concrete combined column |
| CN103306215A (en) * | 2013-05-27 | 2013-09-18 | 华侨大学 | Novel reinforcing device for reinforced concrete bridge pier and construction method thereof |
| CN103628623A (en) * | 2013-11-25 | 2014-03-12 | 辽宁工业大学 | Fiber cloth coated polyvinyl chloride (PVC) pipe sea sand concrete column and implementation method thereof |
| CN104234316A (en) * | 2014-09-10 | 2014-12-24 | 哈尔滨工业大学深圳研究生院 | Steel-tube square reinforced concrete member and preparation method thereof |
| CN104804331A (en) * | 2015-04-24 | 2015-07-29 | 济南大学 | Recycling method of FRP waste, PVC-based wood-plastic composite and preparation method of PVC-based wood-plastic composite |
| CN106907018A (en) * | 2017-04-25 | 2017-06-30 | 中国二十冶集团有限公司 | A kind of house stub method for repairing and mending |
| WO2017141195A1 (en) * | 2016-02-18 | 2017-08-24 | The Hong Kong Polytechnic University | Improved reinforcing members for concrete structures |
| CN110905227A (en) * | 2019-11-21 | 2020-03-24 | 南宁学院 | Method for reinforcing concrete column |
| CN111395753A (en) * | 2020-03-28 | 2020-07-10 | 陕西省建筑科学研究院有限公司 | Formwork erecting method for enlarging cylindrical section |
| CN112012484A (en) * | 2020-07-31 | 2020-12-01 | 中国建筑第八工程局有限公司 | Reinforcing device and reinforcing method for column template |
| CN114108875A (en) * | 2021-11-30 | 2022-03-01 | 安徽工业大学 | Connecting structure of PVC-FRP (polyvinyl chloride-fiber reinforced plastic) pipe concrete column and concrete shear wall and connecting structure installation method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031928A (en) * | 2013-01-07 | 2013-04-10 | 黑龙江大学 | PVC tube-based sea sand/concrete column coated with FRP cloth |
| CN103206042A (en) * | 2013-03-18 | 2013-07-17 | 广西大学 | PVC (polyvinyl chloride) pipe constrained and rectangular stirrup hooped reinforced concrete combined column |
| CN103306215A (en) * | 2013-05-27 | 2013-09-18 | 华侨大学 | Novel reinforcing device for reinforced concrete bridge pier and construction method thereof |
| CN103628623B (en) * | 2013-11-25 | 2016-06-01 | 辽宁工业大学 | Cloth parcel pvc pipe marine sand concrete post and implementation method thereof |
| CN103628623A (en) * | 2013-11-25 | 2014-03-12 | 辽宁工业大学 | Fiber cloth coated polyvinyl chloride (PVC) pipe sea sand concrete column and implementation method thereof |
| CN104234316A (en) * | 2014-09-10 | 2014-12-24 | 哈尔滨工业大学深圳研究生院 | Steel-tube square reinforced concrete member and preparation method thereof |
| CN104804331A (en) * | 2015-04-24 | 2015-07-29 | 济南大学 | Recycling method of FRP waste, PVC-based wood-plastic composite and preparation method of PVC-based wood-plastic composite |
| CN104804331B (en) * | 2015-04-24 | 2016-09-14 | 济南大学 | The reuse method of FRP garbage, PVC base wood-plastic composite material and preparation method thereof |
| WO2017141195A1 (en) * | 2016-02-18 | 2017-08-24 | The Hong Kong Polytechnic University | Improved reinforcing members for concrete structures |
| CN106907018A (en) * | 2017-04-25 | 2017-06-30 | 中国二十冶集团有限公司 | A kind of house stub method for repairing and mending |
| CN110905227A (en) * | 2019-11-21 | 2020-03-24 | 南宁学院 | Method for reinforcing concrete column |
| CN111395753A (en) * | 2020-03-28 | 2020-07-10 | 陕西省建筑科学研究院有限公司 | Formwork erecting method for enlarging cylindrical section |
| CN112012484A (en) * | 2020-07-31 | 2020-12-01 | 中国建筑第八工程局有限公司 | Reinforcing device and reinforcing method for column template |
| CN114108875A (en) * | 2021-11-30 | 2022-03-01 | 安徽工业大学 | Connecting structure of PVC-FRP (polyvinyl chloride-fiber reinforced plastic) pipe concrete column and concrete shear wall and connecting structure installation method |
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| CN102392541B (en) | 2013-05-29 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120328 Assignee: Ma'an Mountain Hong Tai building materials limited-liability company Assignor: Anhui University of Technology Contract record no.: 2014340000070 Denomination of invention: Method for reinforcing concrete column by utilizing PVC-FRP (Poly Vinyl Chloride-Fiberglass Reinforced Plastic) pipe Granted publication date: 20130529 License type: Exclusive License Record date: 20140410 |
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Effective date of registration: 20201229 Address after: 243000 R & D Building 1, north side of Beijing Avenue, Ma'anshan demonstration park, Anhui Province Patentee after: MAANSHAN ANGONG UNIVERSITY INTELLIGENT EQUIPMENT TECHNOLOGY INSTITUTE Co.,Ltd. Address before: 243002 No. 59 East Lake Road, Anhui, Ma'anshan Patentee before: ANHUI University OF TECHNOLOGY |
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Effective date of registration: 20211214 Address after: 243000 No. 59 Hudong Road, Ma'anshan City, Anhui Province Patentee after: ANHUI University OF TECHNOLOGY Address before: 243000 R & D Building 1, north side of Beijing Avenue, Ma'anshan demonstration park, Anhui Province Patentee before: MAANSHAN ANGONG UNIVERSITY INTELLIGENT EQUIPMENT TECHNOLOGY INSTITUTE Co.,Ltd. |