CN107268459A - A kind of construction method of prestressed fiber cloth reinforced Reinforced Concrete Pier Column - Google Patents
A kind of construction method of prestressed fiber cloth reinforced Reinforced Concrete Pier Column Download PDFInfo
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- CN107268459A CN107268459A CN201710465989.7A CN201710465989A CN107268459A CN 107268459 A CN107268459 A CN 107268459A CN 201710465989 A CN201710465989 A CN 201710465989A CN 107268459 A CN107268459 A CN 107268459A
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- intermediate plate
- reinforced concrete
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- 239000000835 fiber Substances 0.000 title claims abstract description 74
- 239000004744 fabric Substances 0.000 title claims abstract description 72
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 35
- 238000010276 construction Methods 0.000 title claims abstract description 14
- 239000012790 adhesive layer Substances 0.000 claims abstract description 10
- 229920006332 epoxy adhesive Polymers 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004873 anchoring Methods 0.000 claims abstract description 9
- 230000003190 augmentative effect Effects 0.000 claims abstract description 9
- 230000001680 brushing effect Effects 0.000 claims abstract description 5
- 238000005728 strengthening Methods 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 238000004804 winding Methods 0.000 claims description 13
- 239000010410 layer Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 3
- 238000010009 beating Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract 2
- 239000002689 soil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 210000003518 stress fiber Anatomy 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a kind of construction method of prestressed fiber cloth reinforced Reinforced Concrete Pier Column.A kind of pre-stressed fiber cloth rotary self-locking formula stretching and anchoring device is set, including two anchor poles, two intermediate plates, two anchor heads and for keeping prestressed four unilateral bearings, eight voussoirs and fiber cloth.Determine that maintenance to be added is put, polished, filling-up hole, brushing epoxy adhesive layer, then the connection of fiber cloth and anchorage is completed, and the maintenance to be added that the fiber cloth connected is wrapped in into brushing epoxy adhesive layer is put, tensioning to fiber cloth is realized by augmenting wrench, that is, realizes the strengthening construction to Reinforced Concrete Pier Column.The inventive method is simple to operate, it is to avoid strand tapered anchorage is during power application, the bent screws phenomenon when stretching force is larger, and operating space needed for anchor set used in this method is small, simple structure, easy to operate, with low cost.
Description
Technical field
The invention belongs to civil engineering structure field of reinforcement, more particularly to a kind of prestressing force of use rotary self-locking formula anchorage
The construction method of fiber cloth reinforced Reinforced Concrete Pier Column.
Background technology
Fiber composite reinforcing material has unidirectional tensile strength height, light weight, modulus of elasticity height, small volume, anticorrosive etc.
Feature, it is little to original structure member section, load increase after reinforcing, therefore it is widely used in concrete structure reinforcement
In.Prestressing force is applied to ring fibrous material in practice, pre-stress fibre material constraint reinforced column makes core
Concrete is acted on by effective lateral restraint in advance, improves the utilization rate of material.Due to prestressed fiber cloth reinforced concrete pier
The prestressed application of fibrous material is limited by anchorage in column construction method, and ripe anchorage is also seldom in the market, folder
Holding effect fruit is unsatisfactory, and consolidation effect has to be strengthened.
The content of the invention
The invention aims to solve pre-stressed fiber cloth in prestressed fiber cloth reinforced performance of concrete column confined construction to exist
Tensioning and anchorage problem in stretching process, and then a kind of prestressed fiber cloth reinforced steel of use rotary self-locking formula anchorage is provided
The construction method of reinforced concrete pier stud.
Concretely comprise the following steps：
(1) a kind of pre-stressed fiber cloth rotary self-locking formula stretching and anchoring device is set, including two anchor poles, two intermediate plates, two
Anchor head and for keeping prestressed four unilateral bearings, eight voussoirs and fiber cloth；Anchor pole by two ends termination point of anchor rod, six
Angle nut and anchor body composition, the termination point of anchor rod at two ends are respectively provided with anchor pole U-lag, and intermediate plate mounting hole is opened at anchor body two；Intermediate plate two
Also correspond to and open intermediate plate mounting hole, screw is fixedly connected with intermediate plate and anchor pole through corresponding intermediate plate mounting hole；Anchor head is provided with two peaces
Hole is filled, mounting hole is made up of aperture and macropore, termination point of anchor rod and list that the aperture and hole depth of aperture and macropore are connected with anchor head
It is consistent to the diameter and depth of bearing, an anchor head U-lag is opened at macropore；The anchor head is according to treating reinforced steel concrete pier
Post is that square column or cylinder choose the L-shaped flat board being close to square column surface or the arc plate being close to periphery respectively.
(2) the reinforcing position being reinforced on Reinforced Concrete Pier Column is determined；If being reinforced Reinforced Concrete Pier Column for square column,
Three corners of square column are subjected to polishing chamfering with sander, if being reinforced Reinforced Concrete Pier Column for cylinder, step are directly entered
Suddenly (3).
(3) polished being reinforced Reinforced Concrete Pier Column surface, filling-up hole is handled, and is then being reinforced armored concrete
The boundary surface that pier stud need to carry out pre-stressed fiber cloth parcel uniformly brushes one layer of epoxy adhesive layer.
(4) cutting length and the cutting of fiber cloth are determined.
(5) one end termination for the fiber cloth for cutting step (4) is clamped between anchor pole and intermediate plate, in intermediate plate mounting hole
Screw fixing anchor bar and intermediate plate are tightened, fiber cloth is enclosed along anchor pole and intermediate plate ring winding 1 ~ 2, and ensures fine in winding process
Wrapped between Wei Bu and anchor pole and intermediate plate；Above-mentioned anchor pole and intermediate plate clamping and ring winding step are repeated to the other end of fiber cloth
Suddenly, the connection of fiber cloth and anchorage is completed.
(6) four unilateral bearings are respectively put into the reserved macropore of two anchor heads, while note the direction of unilateral bearing,
And the unilateral bearing U-lag on unilateral bearing aligns with the anchor head U-lag on anchor head and voussoir is put into.
(7) what the fiber cloth for connecting step (5) was wrapped in that step (3) uniformly brushes one layer of epoxy adhesive layer is reinforced steel
On the reinforcing position of reinforced concrete pier stud, the termination point of anchor rod at anchor pole two ends is penetrated to the aperture of anchor head respectively, by termination point of anchor rod
Anchor pole U-lag alignd with the unilateral bearing breach on unilateral bearing and be put into voussoir.
(8) augmenting wrench is placed at the hex nut of anchor pole, pulls two that augmenting wrench drive winds fiber cloth
Anchor pole and intermediate plate rotation, make the tension in fiber cloth gradually increase, until being loaded into required proof stress, that is, realize to steel
The strengthening construction of reinforced concrete pier stud.
The inventive method is contrasted with prior art, and advantage is：（1）The inventive method is simple to operate, especially for
Reinforce for square column due to device be placed on one jiao of post avoid fiber cloth during application one jiao friction loss simultaneously
Reduce the processing in a corner in reinforcing process.（2）Strand tapered anchorage is avoided during power application, when stretching force is larger
When bent screws phenomenon.（3）Operating space needed for the anchor set of this construction method has is small, simple structure, easy to operate,
Advantage with low cost.
Brief description of the drawings
The pre-stressed fiber cloth rotation used when Reinforced Concrete Pier Column is reinforced in Fig. 1 embodiment of the present invention 1 for square column
The scheme of installation of self-locking stretching and anchoring device.
The pre-stressed fiber cloth rotation used when Reinforced Concrete Pier Column is reinforced in Fig. 2 embodiment of the present invention 1 for square column
The mounting plane figure of self-locking stretching and anchoring device.
The pre-stressed fiber cloth rotation used when Reinforced Concrete Pier Column is reinforced in Fig. 3 embodiment of the present invention 1 for cylinder
The scheme of installation of self-locking stretching and anchoring device.
The pre-stressed fiber cloth rotation used when Reinforced Concrete Pier Column is reinforced in Fig. 4 embodiment of the present invention 1 for cylinder
The mounting plane figure of self-locking stretching and anchoring device.
Fig. 5 is the anchor head, unilateral bearing, the structural representation of voussoir that use in the embodiment of the present invention.
Fig. 6 is the anchor pole, the structural representation of intermediate plate that use in the embodiment of the present invention.
Marked in figure：1- anchor poles；11- termination point of anchor rod；12- hex nuts；13- anchor bodies；131- intermediate plate mounting holes；111- anchors
Bar U-lag；2- intermediate plates；21- screws；3- anchor heads；31- apertures；32- macropores；321- anchor head U-lags；4- unilateral bearings；41- is mono-
To bearing breach；42- unilateral bearing U-lags；5- voussoirs；6- fiber cloths；7- reinforced concrete square columns；8- RC Circulars
Post.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in Fig. 1,2,5,6, the present embodiment is reinforcing object with reinforced concrete square columns 7, using pre-stressed fiber cloth to steel
Reinforced concrete square column 7 is reinforced, and the width of fiber cloth 6 is 150mm.Comprise the following steps that：
(1) a kind of pre-stressed fiber cloth rotary self-locking formula stretching and anchoring device, including two anchor poles 1, two intermediate plates 2, two are set
Individual anchor head 3 and for keeping prestressed four unilateral bearings 4, eight voussoirs 5 and fiber cloth 6；Anchor pole 1 by two ends anchor pole
Termination 11, hex nut 12 and anchor body 13 are constituted, and the termination point of anchor rod 11 at two ends is respectively provided with anchor pole U-lag 111, and the two of anchor body 13 is opened
Intermediate plate mounting hole 131；The two of intermediate plate 2 also corresponds to and opens intermediate plate mounting hole 131, and screw 21 is solid through corresponding intermediate plate mounting hole 131
Surely intermediate plate 2 and anchor pole 1 are connected；Two mounting holes are opened at the middle part of anchor head 3, and mounting hole is made up of aperture 31 and macropore 32.Aperture 31 and
The aperture of macropore 32 and hole depth are consistent with the termination point of anchor rod 11 and the diameter and depth of unilateral bearing 4 that anchor head 3 is connected.In macropore
An anchor head U-lag mouthful 321 is opened at 32；The anchor head 3 chooses the L-shaped flat board being close to the surface of reinforced concrete square columns 7.
(2) the reinforcing position being reinforced on reinforced concrete square columns 7 is determined；With sander by reinforced concrete square columns 7
Three corners carry out polishing chamfering.
(3) surface for being reinforced reinforced concrete square columns 7 is polished, filling-up hole processing, then be reinforced reinforcing bar mix
The boundary surface that solidifying earthwork post 7 need to carry out pre-stressed fiber cloth parcel uniformly brushes one layer of epoxy adhesive layer.
(4) cutting length and the cutting of fiber cloth 6 are determined.The girth of post adds at cutting length=parcel location of fiber cloth 6
2 times of the girth of anchor pole.
(5) one end termination for the fiber cloth 6 for cutting step (4) is clamped between anchor pole 1 and intermediate plate 2, is installed in intermediate plate
The fixing anchor bar 1 of screw 21 and intermediate plate 2 are tightened in hole 131, fiber cloth 6 is enclosed along anchor pole 1 and the ring of intermediate plate 2 winding 2, and ensures
Wrapped in winding process between fiber cloth 6 and anchor pole 1 and intermediate plate 2；Above-mentioned anchor pole 1 and intermediate plate 2 are repeated to the other end of fiber cloth 6
Clamp and ring winding step, complete fiber cloth 6 and the connection of anchorage.
(6) four unilateral bearings 4 are respectively put into the reserved macropore 32 of two anchor heads 3 while noting unilateral bearing 4
Direction, and the unilateral bearing U-lag 42 on unilateral bearing 4 is alignd with the anchor head U-lag 321 on anchor head and voussoir 5 is put into.
(7) fiber cloth 6 for connecting step (5) is wrapped in the uniform reinforcing bar for brushing one layer of epoxy adhesive layer of step (3) and mixed
On the reinforcing position of solidifying earthwork post 7, the termination point of anchor rod 11 at the two ends of anchor pole 1 is penetrated to the aperture 31 of anchor head 3 respectively, by termination point of anchor rod
Anchor pole U-lag 111 on 11 aligns with the unilateral bearing breach 41 on unilateral bearing 4 and is put into voussoir 5.
(8) augmenting wrench is placed at the hex nut 12 of anchor pole 1, pulls augmenting wrench drive and wind fiber cloth 6
Two anchor poles 1 and intermediate plate 2 rotate, and the tension in fiber cloth 6 is gradually increased, until being loaded into required proof stress, i.e.,
Realize 7 strengthening constructions to reinforced concrete square columns.
Embodiment 2：
As shown in Fig. 3 ~ 6, the present embodiment, to reinforce object, is mixed with Reinforced Concrete Circular Cylinder 8 using pre-stressed fiber cloth to reinforcing bar
Solidifying soil cylinder 8 is reinforced, and the width of fiber cloth 6 is 150mm.Comprise the following steps that：
(1) a kind of pre-stressed fiber cloth rotary self-locking formula stretching and anchoring device, including two anchor poles 1, two intermediate plates 2, two are set
Individual anchor head 3 and for keeping prestressed four unilateral bearings 4, eight voussoirs 5 and fiber cloth 6；Anchor pole 1 by two ends anchor pole
Termination 11, hex nut 12 and anchor body 13 are constituted, and the termination point of anchor rod 11 at two ends is respectively provided with anchor pole U-lag 111, and the two of anchor body 13 is opened
Intermediate plate mounting hole 131；The two of intermediate plate 2 also corresponds to and opens intermediate plate mounting hole 131, and screw 21 is solid through corresponding intermediate plate mounting hole 131
Surely intermediate plate 2 and anchor pole 1 are connected；Two mounting holes are opened at the middle part of anchor head 3, and mounting hole is made up of aperture 31 and macropore 32.Aperture 31 and
The aperture of macropore 32 and hole depth are consistent with the termination point of anchor rod 11 and the diameter and depth of unilateral bearing 4 that anchor head 3 is connected.In macropore
An anchor head U-lag mouthful 321 is opened at 32；The anchor head 3 chooses the arc plate being close to the surface of Reinforced Concrete Circular Cylinder 8.
(2) surface for being reinforced Reinforced Concrete Circular Cylinder 8 is polished, filling-up hole processing, then be reinforced reinforcing bar mix
The boundary surface that solidifying soil cylinder 8 need to carry out pre-stressed fiber cloth parcel uniformly brushes one layer of epoxy adhesive layer.
(3) cutting length and the cutting of fiber cloth 6 are determined.The girth of post adds at cutting length=parcel location of fiber cloth 6
1 times of the girth of anchor pole.
(4) one end termination for the fiber cloth 6 for cutting step (3) is clamped between anchor pole 1 and intermediate plate 2, is installed in intermediate plate
The fixing anchor bar 1 of screw 21 and intermediate plate 2 are tightened in hole 131, fiber cloth 6 is enclosed along anchor pole 1 and the ring of intermediate plate 2 winding 1, and ensures
Wrapped in winding process between fiber cloth 6 and anchor pole 1 and intermediate plate 2；Above-mentioned anchor pole 1 and intermediate plate 2 are repeated to the other end of fiber cloth 6
Clamp and ring winding step, complete fiber cloth 6 and the connection of anchorage.
(5) four unilateral bearings 4 are respectively put into the reserved macropore 32 of two anchor heads 3 while noting unilateral bearing 4
Direction, and the unilateral bearing U-lag 42 on unilateral bearing 4 is alignd with the anchor head U-lag 321 on anchor head and voussoir 5 is put into.
(6) fiber cloth 6 for connecting step (4) is wrapped in the uniform reinforcing bar for brushing one layer of epoxy adhesive layer of step (2) and mixed
On the reinforcing position of solidifying soil cylinder 8, the termination point of anchor rod 11 at the two ends of anchor pole 1 is penetrated to the aperture 31 of anchor head 3 respectively, by termination point of anchor rod
Anchor pole U-lag 111 on 11 aligns with the unilateral bearing breach 41 on unilateral bearing 4 and is put into voussoir 5.
(7) augmenting wrench is placed at the hex nut 12 of anchor pole 1, pulls augmenting wrench drive and wind fiber cloth 6
Two anchor poles 1 and intermediate plate 2 rotate, and the tension in fiber cloth 6 is gradually increased, until being loaded into required proof stress, i.e.,
Realize 8 strengthening constructions to Reinforced Concrete Circular Cylinder.
Specific embodiment described herein is only to spirit explanation for example of the invention.The technical field of the invention
Technical staff some modifications or supplement can be made to described specific embodiment or is substituted using similar mode, but can't
Deviate the spirit of the present invention or surmount scope defined in appended claims.
Claims (1)
1. a kind of construction method of prestressed fiber cloth reinforced Reinforced Concrete Pier Column, it is characterised in that concretely comprise the following steps：
(1) a kind of pre-stressed fiber cloth rotary self-locking formula stretching and anchoring device is set, including two anchor poles, two intermediate plates, two
Anchor head and for keeping prestressed four unilateral bearings, eight voussoirs and fiber cloth；Anchor pole by two ends termination point of anchor rod, six
Angle nut and anchor body composition, the termination point of anchor rod at two ends are respectively provided with anchor pole U-lag, and intermediate plate mounting hole is opened at anchor body two；Intermediate plate two
Also correspond to and open intermediate plate mounting hole, screw is fixedly connected with intermediate plate and anchor pole through corresponding intermediate plate mounting hole；Anchor head is provided with two peaces
Hole is filled, mounting hole is made up of aperture and macropore, termination point of anchor rod and list that the aperture and hole depth of aperture and macropore are connected with anchor head
It is consistent to the diameter and depth of bearing, an anchor head U-lag is opened at macropore；The anchor head is according to treating reinforced steel concrete pier
Post is that square column or cylinder choose the L-shaped flat board being close to square column surface or the arc plate being close to periphery respectively；
(2) the reinforcing position being reinforced on Reinforced Concrete Pier Column is determined；If being reinforced Reinforced Concrete Pier Column for square column, with beating
Three corners of square column are carried out polishing chamfering by grinding machine, if being reinforced Reinforced Concrete Pier Column for cylinder, are directly entered step
(3)；
(3) polished being reinforced Reinforced Concrete Pier Column surface, filling-up hole is handled, and is then being reinforced Reinforced Concrete Pier Column
The boundary surface that pre-stressed fiber cloth parcel need to be carried out uniformly brushes one layer of epoxy adhesive layer；
(4) cutting length and the cutting of fiber cloth are determined；
(5) one end termination for the fiber cloth for cutting step (4) is clamped between anchor pole and intermediate plate, is tightened in intermediate plate mounting hole
Screw fixing anchor bar and intermediate plate, fiber cloth are enclosed along anchor pole and intermediate plate ring winding 1 ~ 2, and ensure fiber cloth in winding process
Wrapped between anchor pole and intermediate plate；Above-mentioned anchor pole and intermediate plate clamping and ring winding step are repeated to the other end of fiber cloth, it is complete
Into the connection of fiber cloth and anchorage；
(6) four unilateral bearings are respectively put into the reserved macropore of two anchor heads, while note the direction of unilateral bearing, and will
Unilateral bearing U-lag on unilateral bearing aligns with the anchor head U-lag on anchor head and is put into voussoir；
(7) fiber cloth for connecting step (5) is wrapped in the uniform reinforcing bar that is reinforced for brushing one layer of epoxy adhesive layer of step (3) and mixed
On the reinforcing position of solidifying knoll post, the termination point of anchor rod at anchor pole two ends is penetrated to the aperture of anchor head respectively, by the anchor on termination point of anchor rod
Bar U-lag aligns with the unilateral bearing breach on unilateral bearing and is put into voussoir；
(8) augmenting wrench is placed at the hex nut of anchor pole, pulls augmenting wrench and drive two anchor poles for winding fiber cloth
With intermediate plate rotation, the tension in fiber cloth is gradually increased, until being loaded into required proof stress, that is, realize mixed to reinforcing bar
The strengthening construction of solidifying knoll post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465989.7A CN107268459B (en) | 2017-06-19 | 2017-06-19 | Construction method for prestressed fiber cloth reinforced concrete pier column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465989.7A CN107268459B (en) | 2017-06-19 | 2017-06-19 | Construction method for prestressed fiber cloth reinforced concrete pier column |
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| Publication Number | Publication Date |
|---|---|
| CN107268459A true CN107268459A (en) | 2017-10-20 |
| CN107268459B CN107268459B (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710465989.7A Active CN107268459B (en) | 2017-06-19 | 2017-06-19 | Construction method for prestressed fiber cloth reinforced concrete pier column |
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| CN (1) | CN107268459B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359380A (en) * | 2019-08-09 | 2019-10-22 | 上海悍马建筑科技有限公司 | The three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force |
| CN112942684A (en) * | 2021-02-04 | 2021-06-11 | 北京工业大学 | Strip-type component tensioning and anchoring integrated device with multiple anchoring capabilities |
| CN113700323A (en) * | 2021-09-02 | 2021-11-26 | 山西建筑工程集团有限公司 | PC component field installation grout node constant temperature curing means |
| CN114809693A (en) * | 2022-03-21 | 2022-07-29 | 重庆科技学院 | High-load self-restraint reinforcing device for existing reinforced concrete column |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359380A (en) * | 2019-08-09 | 2019-10-22 | 上海悍马建筑科技有限公司 | The three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force |
| CN112942684A (en) * | 2021-02-04 | 2021-06-11 | 北京工业大学 | Strip-type component tensioning and anchoring integrated device with multiple anchoring capabilities |
| CN113700323A (en) * | 2021-09-02 | 2021-11-26 | 山西建筑工程集团有限公司 | PC component field installation grout node constant temperature curing means |
| CN114809693A (en) * | 2022-03-21 | 2022-07-29 | 重庆科技学院 | High-load self-restraint reinforcing device for existing reinforced concrete column |
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| Publication number | Publication date |
|---|---|
| CN107268459B (en) | 2023-08-11 |
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Application publication date: 20171020 Assignee: Guangxi hanximing Technology Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2023980046002 Denomination of invention: A construction method for strengthening reinforced concrete pier columns with prestressed fiber cloth Granted publication date: 20230811 License type: Common License Record date: 20231107 |