CN102292779B - Post-tensioning apparatus for reinforcing a concrete structure using unbonded steel wire with inherent corrosion resistance and a borescope camera, and method for the maintenance and repair of a concrete structure using same - Google Patents
Post-tensioning apparatus for reinforcing a concrete structure using unbonded steel wire with inherent corrosion resistance and a borescope camera, and method for the maintenance and repair of a concrete structure using same Download PDFInfo
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- CN102292779B CN102292779B CN201080005416.2A CN201080005416A CN102292779B CN 102292779 B CN102292779 B CN 102292779B CN 201080005416 A CN201080005416 A CN 201080005416A CN 102292779 B CN102292779 B CN 102292779B
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- steel wire
- steel
- tendon
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- concrete structure
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/08—Vessels characterised by the material; Selection of materials for pressure vessels
- G21C13/093—Concrete vessels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/003—Remote inspection of vessels, e.g. pressure vessels
- G21C17/01—Inspection of the inner surfaces of vessels
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/003—Remote inspection of vessels, e.g. pressure vessels
- G21C17/013—Inspection vehicles
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
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- Architecture (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
According to the present invention, the convenience of inspecting and maintaining and repairing concrete structures, in particular nuclear reactor containment buildings during the operation thereof, can be significantly improved through the use of an unbonded steel wire, clad with a stiff covering such as epoxy, and an industrial borescope camera.
Description
Technical field
The present invention relates to for the post-stretching device of reinforced concrete structure and utilize its maintenance of concrete structure management method, more particularly, relate to remarkable post-stretching device and the maintenance management method that has improved maintenance management, it is inserted in the steel tendon forming without bonding steel wire by being formed with the hard overlay films such as epoxy resin with anticorrosive property in conduit, afterwards, introduce tension force and carry out post-stretching, can get rid of thus the filling of injecting the railway grease in conduit as corrosion inhibitor, check and remove and the operation of the railway grease that reinjects when maintenance management checks thereby can save is in operation.Particularly, the present invention makes for the concrete of reinforcing nuclear reactor safety shell structure.
And, setting up after end of prestressed introducing and nuclear reactor safety shell structure, technoscope video camera is put in conduit, and run through conduit, state by the real-time steel tendon to the portion of setting within it is confirmed, check, be inserted into again and fill the maintenance management method in conduit thereby improved to extract in conduit railway grease and steel tendon in the past, provide and simply carry out the device of this operation and utilize its maintenance management method.
When post-stretching system that employing the present invention relates to, must adopt and use the hard overlay film steel wire (can not use the soft overlay films such as high density polyethylene (HDPE)), that long-time running stability is proven such as epoxy resin, with prevent due to prestress between steel wire and steel wire, the pressure and the friction phenomenon that between steel wire and conduit, produce cause overlay film damaged.Based on the feature without bonding system, steel wire overlay film damaged is the immediate cause that corrosion occurs.
Background technology
Reinforced concrete is the representative compound substance being made up of cement, sand, reinforcing bar etc., and due to the characteristic of constituent material, economy is easy to use again, therefore, is widely used in the heavy construction structure of building as nuclear reactor safety shell structure.But it exists two kinds of fatal shortcomings, be exactly because many reasons cracks and more fragile to tension force in use procedure.
In order to make up the concrete shortcoming to tension force fragility, use embedded bar in concrete so that reinforcing bar bears the reinforced concrete structure of tension force, still, can't control the crackle that the local tension force that causes due to many reasons produces completely.In order to make up these shortcomings, import and introduced prestressed method, in reinforced concrete structure, make conduit, and insert therein steel tendon, in advance structure is exerted pressure by introducing tension force.
Prestress opportunity of pressure can be divided into pretensioning and two kinds of modes of post-stretching according to introducing, and whether is divided into bonding system with construction bonds and without bonding system according to the steel tendon as expanded material.
Nuclear reactor safety shell structure is from external impact when protective reaction heap self, as react heap cooling device or water vapor equipment breaks while waiting design hypothetical accident, resists the pressure producing, and prevents that to reach internal contamination thing from flowing out as order to outside.Therefore, not only want the external force on resisting structure, also should guarantee sealing, so build with prestressed reinforced concrete structure.
The prestress using for reinforcing nuclear reactor safety shell structure, its version adopt post-stretching mode without bonding system, if this is owing to adopting bonding mode, be in operation and cannot confirm the prestressed extent of damage by inspection, and, also cannot supplement or change afterwards prestress, so, cannot extend the containment structure life-span, the contradiction in main equipment life-span also may occur to be determined by auxiliary device.Therefore, all adopt without bonding mode around all steel tendons of dome-shaped containment structure in vertical, horizontal direction integral loop.
The situation that is used for the post-stretching system of reinforcing nuclear reactor safety shell structure, in conduit, repack with grease replaces the grout that adopts bonding mode, to guarantee without bonding system.Be filled to the railway grease in full grout cap completely, whole post-stretching system is played to etch-proof effect, in the time carrying out the in-service inspection such as tonometry, etch state inspection of steel tendon, remove, discard some or all of railway grease, and check finish after, reinject and fill new railway grease.This operation self is very loaded down with trivial details, also has environmental issues such as producing useless railway grease.
Summary of the invention
Existingly use general steel wire for reinforcing the post-stretching system of nuclear reactor safety shell structure, and adopted the method for repack with grease in steel tendon and grout cap for anticorrosion.Therefore,, for the in-service inspection of periodically carrying out, need to repeatedly all remove and recharge the loaded down with trivial details operation of railway grease.Also there is the environmental issue of the railway grease of removal being carried out to refuse processing.
And, being filled in the railway grease in 200 meters of long conduits nearly in order to remove under normal temperature with solid state, main employing in the alive mode in steel wire upper reaches is heated to temperature more than 80 degree Celsius and dissolves into the method that liquid condition is removed.But, be in fact difficult to remove railway grease completely, thus when in-service inspection recharges after finishing, there is new, old railway grease and mix, or produce the problems such as air gap.
And when containment structure was irradiated by direct light in summer, the railway grease in conduit dissolves and approaches liquid condition, now, railway grease flows out the surface of polluting containment structure from the space of concrete crack or grout cap etc., has impact shortcoming attractive in appearance.
Further, in order to confirm whether the steel wire that forms steel tendon corrodes, and must extract steel wire in conduit, needs following process for this reason: discharge the tension force of steel tendon completely, extract steel wire from fixture is removed chock, again insert steel wire and carry out stretch-draw.This means, due to the difficult problem such as remove the railway grease of having filled and recharge, need to carry out than again laying the more difficult process of this steel tendon.
In the present invention, use post-stretching system, described post-stretching system is inserted with in conduit 30 for inserting the steel tendon of vertical steel tow 3 and horizontal steel tendon 4 nuclear reactor safety shell structure 100, insert by the steel tendon 11 forming without bonding steel wire 10 that applies the hard overlay films such as epoxy resin, and after deflector (Deviator) 14, gland 27, fixed wedge 28 are installed, use introducing tension force to introduce prestress with hydraulic jack.
And, except post-stretching is with steel tendon 11, also possess the independent technoscope video camera that can arrange and transfer the system with steel wire 50, after construction finishes, when nuclear reactor is in service while checking,, and pull to transfer from a contrary side and make endoscopic camera equipment 53 pass through conduits 30 by the mode of steel wire 50 with connecting endoscopic camera equipment 53 on steel wire 50 in this handover, can confirm the state of steel tendon 11 and make a video recording by monitor in outside.
And, at the little and lighter wire rope of the rear portion of endoscopic camera cable connection diameter, can apply in the situation of burden and run through conduit 30 for steel tendon with endoscope camera cable not, afterwards, utilize this wire rope to be again set to transfer endoscopic camera and the steel wire 50 for handover that pulls out.
Brief description of the drawings
Fig. 1 be the present invention relates to for reinforcing the longitudinal section of post-stretching system of nuclear reactor safety shell structure.
Fig. 2 is the enlarged drawing that is embedded in the conduit part in concrete being illustrated in detail in Fig. 1.
Fig. 3 is the enlarged drawing that is illustrated in detail the steel tendon fixed part in Fig. 1.
Fig. 4 is the shape of nuclear reactor safety shell structure and the stereographic map with the nuclear reactor safety shell structure of vertical steel tow and the configuration of horizontal steel tendon shape for the post-stretching system of reinforcing nuclear reactor safety shell structure that the present invention relates to.
Fig. 5 is the longitudinal section of longitudinal configuration shape of the vertical steel tow shown in Fig. 4 and the landscape configuration shape of horizontal steel tendon.
Fig. 6 is the sectional elevation of the landscape configuration shape of the vertical steel tow shown in Fig. 4 and longitudinal configuration shape of horizontal steel tendon.
Fig. 7 is arranged on the connecting portion of fixture hydraucone and protecting pipe and plays the holding device effect of steel tendon spacing and endoscopic camera is transferred the detail perspective view with the deflector of steel wire position fixing apparatus effect.
Fig. 8 is arranged on the position of the each protecting pipe unitor that interconnects protecting pipe and transfers the outside detail perspective view of conduit of the position fixing apparatus of the position of using steel wire for fixed endoscope video camera.
Fig. 9 is arranged on the position of the each protecting pipe unitor that interconnects protecting pipe and transfers the catheter interior detail perspective view of the position fixing apparatus of the position of using steel wire for fixed endoscope video camera.
Figure 10 is the stereographic map that handover that technoscope camera equipment is drawn out of with king wire is connected with steel wire.
Reference numeral:
1: nuclear reactor safety shell structure exterior wall 2: nuclear reactor safety shell structure interior wall
3: vertical steel tow 4: horizontal steel tendon
5: vertical steel tow fixture 6: horizontal steel tendon fixture
7: horizontal steel tendon fixed block 10: steel wire
11: steel tendon 12: protecting pipe
13: protecting pipe unitor 14: deflector
15: transfer with steel wire position fixing apparatus 16: external stability circular frame
17: four jiaos of packing rings 18: the fastening nut of using of position fixing apparatus
19: position fixing apparatus fastening with bolt 20: drop into or draw the pipe of transferring with steel wire
21: transfer with fixation with steel wire chock 22: transfer and use steel wire cap
23: fixture hydraucone 24: fixture transition conduit
25: bearing plate 26: backing plate
27: gland 28 for steel tendon: fixation with steel wire chock
29: fixture cap 30 for steel tendon: conduit
50: endoscopic camera is transferred with steel wire 51: the king wire of extraction
52: endoscopic camera unitor 53: endoscopic camera equipment
54: have, wireless endoscope video camera 55: endoscopic camera auxiliary device case
56: camera cable web member 57: camera data wire connections
100: nuclear reactor safety shell structure 101: concrete surface
Embodiment
Below, present invention will be described in detail with reference to the accompanying.First, the term using in this specification and claims book can not limit with the meaning in common or dictionary, can carry out, under the principle of suitably definition, should being construed to the meaning and the concept that meet the technology of the present invention thought to term concepts for its invention is described with the best way according to inventor.Therefore, the embodiment recording in instructions of the present invention and structure shown in the drawings, just embodiments of the invention, do not represent whole technological thought of the present invention, are interpreted as can having multiple equipollent and the variation that can replace these in the present patent application.
Fig. 1 is the longitudinal section of the post-stretching device that the present invention relates to, Fig. 2 is the enlarged drawing that is embedded in the conduit part in concrete in Fig. 1, Fig. 3 is the enlarged drawing of the steel tendon fixed part in Fig. 1, Fig. 4 is the stereographic map that represents the containment structure of the configuration shape of the steel tendon for reinforcing nuclear reactor safety shell structure, Fig. 5 is the longitudinal section of Fig. 4, Fig. 6 is the sectional elevation of Fig. 4, Fig. 7 is arranged on the stereographic map of the deflector as steel tendon spacing holding device of fixture hydraucone and protecting pipe connecting portion, Fig. 8 is arranged on the exterior perspective view of the handover steel wire position fixing apparatus of the position of the protecting pipe unitor for connecting protecting pipe, Fig. 9 is the perspective interior view of transferring with steel wire position fixing apparatus, Figure 10 is and the stereographic map of transferring the technoscope camera chain being connected with steel wire.
Post-stretching device of the present invention relates to, for reinforcing vertical steel tow 3 and the horizontal steel tendon 4 of nuclear reactor safety shell structure 100 in body of wall internal configurations, its for except comprise that the material of post-stretching system selectes, is constituted to on-the-spot setting and prestressed introducing, also comprise set up finish after total concept of maintenance management of in-service inspection etc.
The post-stretching device the present invention relates to, before the concrete of cast containment structure 100, the parts that protecting pipe 12, fixture hydraucone 23, fixture transition conduit 24, bearing plate 25 etc. are embedded in concrete are all configured in template, particularly, when configuration protecting pipe 12, install and transfer with steel wire position fixing apparatus 15 utilizing protecting pipe unitor 13 to connect on each position of protecting pipe 12, and run through nylon rope is set transferring in the hole of passing through with steel wire 50.After the autofrettage of the post-stretching system of containment structure 100 finishes, utilize this nylon rope to arrange and transfer with steel wire 50.Arrange while transferring with steel wire position fixing apparatus 15, the position that must make to transfer the hole of passing through with steel wire 50 is positioned at the outside of steel tendon 11 bends, to prevent that steel tendon 11 and handover steel wire 50 from interfering with each other.
The xoncrete structure of containment structure 100 is built after work, to be transported to scene by steel tendon 11 volumes of making without bonding steel wire 10 that are coated with the hard overlay films such as epoxy resin, and utilize winch, uncoiler to be inserted in the conduit 30 of vertical steel tow 3 and the conduit 30 of horizontal steel tendon 4, after deflector 14, backing plate 26, gland 27, fixed wedge 28 are installed, utilize stretching seat iron, stretching hydraulic jack to introduce prestress.In this process, the present invention except use deflector 14 with without bonding steel wire 10 different from existing post-stretching system, other is identical.
Afterwards, do not carry out the operation of repack with grease, directly cover fixture tin hat 29, can finish prestress and introduce operation.
Then, extract the king wire 51 of transferring with steel wire 50 out, utilize steel wire unitor to be connected with the nylon rope being embedded in conduit 30, afterwards, from the moving nylon rope of a contrary layback, thereby handover is arranged in conduit 30 with steel wire 50.
Transfer with the leading section of steel wire 50 from the outlet pull-out of a contrary side, at entrance side, fixed wedge 21 is installed, and till outlet side utilizes lifting jack to move to without slag inclusion, and fixed wedge 21 is installed, afterwards, all cover in both sides and transfer with steel wire cap 22, thereby finish to transfer with the setting of steel wire 50 and the post-stretching operation of containment structure 100.
In addition, transfer and use steel wire 50 to need to ensure the durable years identical with steel tendon 11.Equip 53 o'clock owing to transferring endoscopic camera, how many some tension force occur, need to use identical with steel tendon 11 be coated with the hard overlay films such as epoxy resin without the steel wire 10 that bonds.Introduce after some tension force, fixed wedge 21 is installed, afterwards, cover and transfer with steel wire cap 22, to prevent from transferring, to fall into conduit 30 with steel wire 50 interior and cannot use.
In addition, after containment structure 100 completions, the in-service inspection of carrying out in the time that nuclear reactor moves is divided into two kinds, and the firstth, check and confirm whether steel tendon 11 corrodes, the secondth, confirm the lifting test of the loss of tension degree of steel tendon 11.
Whether the steel tendon 11 of confirming the post-stretching system the present invention relates to corrodes, and carries out as follows.; open and transfer with steel wire cap 22; endoscopic camera unitor 52 is connected on the king wire 51 being drawn out of; afterwards; use winch and steel wire coil winder tractive and be wound around in a contrary side and transfer with steel wire 50; make the camera equipment 53 that endoscopic camera 54 is installed lentamente through in conduit 30, confirm video simultaneously and make a video recording.
In this case, while using endoscope cable video camera 54, on camera cable web member 56, connect camera cable, to receive view data; In the time using wireless endoscope video camera 54, on camera cable web member 56, connect the wire rope of transferring with steel wire 50 for arranging, carry out the observation operation of catheter interior.
Endoscopic camera is equipped to 53 from a contrary side outlet pull-out, remove endoscopic camera unitor 52, and connect minor diameter and lighter wire rope at the end of the camera cable of a contrary side entrance side, when using cable winding machine reel and retract camera cable from outlet side, wire rope is embedded in conduit 30.
Then, by the leading section of wire rope from outlet pull-out, releasing is connected with camera cable, and be connected with winch, and connect with the handover steel wire 50 being wound on steel wire spool of a contrary side entrance side, pull wire rope so that handover steel wire 50 exposes from outlet side, then, thereby finish wire rope and the exchange of transferring with steel wire 50, and in conduit 30, again bury the operation of transferring with steel wire 50 underground.
Then, transfer when the steel wire 50 as arranged at first, introduce some pulling force, and fixed wedge 21 be installed, cover and transfer with steel wire cap 22, thereby finish steel tendon 11 and whether occur the inspection of corrosion.
Confirm the lifting test of the loss of tension of the steel tendon 11 the present invention relates to; different from existing system, as long as open fixture tin hat 29, arrange the hydraulic jack for tension detection of sitting iron for tension detection is installed; do not remove the troubles such as railway grease, can directly carry out.After end, as long as remove hydraulic jack, again cover fixture cap 29, finish simply to check.
The post-stretching device the present invention relates to is introduced prestress or tested and confirmed residual prestressed operation process by lifting, and equipment as used herein, all identical with existing system, therefore, the post-stretching device the present invention relates to not only can be arranged in newly-built nuclear reactor safety shell structure 100, can also replace and complete and post-stretching system in operating nuclear reactor safety shell structure 100.
As mentioned above, the present invention relates to for reinforcing the post-stretching device of nuclear reactor safety shell structure 100, can carry out multiple modifications and changes by those skilled in the art, not only use in nuclear reactor safety shell structure 100, can also use in the post-stretching system of gas-holder, food storage tank, cement storage pot and general bridge etc.Should be interpreted as, scope of the present invention is not limited to described embodiment and denomination of invention.
Utilizability in industry
The post-stretching device that use the present invention relates to, existing different for reinforcing the post-stretching system of nuclear reactor safety shell structure from the steel tendon that uses general steel wire to form, have been used and have had the steel tendon forming without bonding steel wire anticorrosive property, that be formed with the hard overlay films such as epoxy resin.Therefore, in conduit, needn't fill separately the railway grease as antiseptic, remove the railway grease of filling, carry out waste treatment, in-service inspection and after finishing, again fill all problems occurring in the process of new railway grease for in-service inspection thereby can improve.
And, can save equipment and the operation of carrying out Heating Steel Wire for removing railway grease circulating current on steel wire of filling, can also solve the problem that flows out grease contaminated containment structure surface from distress in concrete or fixture composition surface etc.Further, can solve the problem of environmental pollution occurring in the discarded process of railway grease of removal.
And, replace inside to be full of the grout cap of railway grease with fixture tin hat, and needn't repack with grease, so as long as open cap, can confirm the lifting test of loss of prestress degree.After lifting test finishes, cover cap, therefore can make residual prestressed mensuration process very simple.
In addition, while using the post-stretching device the present invention relates to, tool has the following advantages: need to not remove repack with grease in order being confirmed whether corrosion occurs, steel tendon is extracted from conduit to be checked, again insert steel tendon, refill the process of railway grease.Utilize endoscopic camera handover steel wire that video camera is dropped into catheter interior, can under steel tendon use state, easily confirm and check the inspection of whether corroding.And the image of recording by video camera, gets off the state recording that checks steel tendon at that time, takes care of as long-term management data.
And, the present invention also tool has the following advantages, except for guaranteeing improved some projects of advantage that the present invention pursues, the post-stretching system that has directly used existing system to use, thereby guarantee good compatibility, can change and build and the post-stretching system of operating nuclear reactor safety shell structure.
Claims (5)
1. utilize the maintenance of concrete structure management method without bonded post tensioning drawing device, it is characterized in that, comprise the steps:
Step (a), in the conduit (30) being possessed by the steel tendon (11) forming without bonding steel wire (10) the insertion inside concrete with anticorrosive property, and apply prestress, and, in the space between conduit (30) and steel tendon (11), do not fill anticorrosive property material;
Step (b), configuration video camera is transferred with steel wire (50), to technoscope camera equipment (53) is dropped in described space and run through conduit (30);
Step (c), technoscope camera equipment (53) is connected to video camera to be transferred with on steel wire (50), pull video camera to transfer with steel wire (50), and utilize technoscope camera equipment (53) observation steel tendon (11) whether to corrode;
Wherein, described step (c) is carried out in the described prestressed situation that keeps steel tendon (11).
2. utilization according to claim 1, without the maintenance of concrete structure management method of bonded post tensioning drawing device, is characterized in that,
Described without being coated with epoxy resin on bonding steel wire (10).
3. utilization according to claim 1 and 2, without the maintenance of concrete structure management method of bonded post tensioning drawing device, is characterized in that,
In described step (c), the state of the steel tendon observing (11) is made a video recording and preserved, use as maintenance management data.
4. without a post-stretching device for bonding mode, it is characterized in that,
Have prestress and introduce the steel tendon (11) of use, it is arranged on protecting pipe inside, and by thering is forming without bonding steel wire (10) of anticorrosive property;
Space between protecting pipe and steel tendon (11) is in not being filled with the empty state of anticorrosive property material,
Possess the deflector (14) on the connecting portion that is arranged on fixture hydraucone and described protecting pipe,
In described space, be provided with video camera and transfer with steel wire (50),
Described deflector (14) has part and the video camera that steel tendon (11) passes through and transfers the part of passing through with steel wire (50),
Video camera transfer with steel wire (50) by be arranged on handover steel wire position fixing apparatus (15) on the connecting portion of protecting pipe be directed into steel tendon (11) non-interference,
Have and drop into and draw the pipe (20) of transferring with steel wire (50), to endoscopic camera equipment (53) and video camera handover are dropped in protecting pipe with steel wire (50).
5. the post-stretching device without bonding mode according to claim 4, is characterized in that,
Described without being coated with epoxy resin on bonding steel wire (10).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2009-0067545 | 2009-07-24 | ||
| KR1020090067545A KR100966457B1 (en) | 2009-07-24 | 2009-07-24 | The posttensioning apparatus for reinforcing concrete structure using borescope and unbonded strand having the self-prevention function of corrosion and, methods for maintenance of concrete structure using the same |
| PCT/KR2010/004356 WO2011010814A2 (en) | 2009-07-24 | 2010-07-05 | Post-tensioning apparatus for reinforcing a concrete structure using unbonded steel wire with inherent corrosion resistance and a borescope camera, and method for the maintenance and repair of a concrete structure using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102292779A CN102292779A (en) | 2011-12-21 |
| CN102292779B true CN102292779B (en) | 2014-06-11 |
Family
ID=42370505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080005416.2A Expired - Fee Related CN102292779B (en) | 2009-07-24 | 2010-07-05 | Post-tensioning apparatus for reinforcing a concrete structure using unbonded steel wire with inherent corrosion resistance and a borescope camera, and method for the maintenance and repair of a concrete structure using same |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100966457B1 (en) |
| CN (1) | CN102292779B (en) |
| WO (1) | WO2011010814A2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3317471B1 (en) * | 2015-07-01 | 2019-10-16 | VSL International AG | Anchorage assembly for a structure, concrete structure with such an assembly, and manufacturing method of such a concrete structure |
| KR20200064306A (en) | 2018-11-29 | 2020-06-08 | 한국수력원자력 주식회사 | Device for protecting coated tendons of a post-tension construction method |
| KR102140034B1 (en) | 2018-11-29 | 2020-07-31 | 한국수력원자력 주식회사 | Device for fixing coated tendons for ductless construction of a post-tension construction method |
| KR102232882B1 (en) | 2020-05-29 | 2021-03-29 | 한국수력원자력 주식회사 | Device for fixing coated tendons for ductless construction of a post-tension construction method |
Citations (2)
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|---|---|---|---|---|
| CN1469058A (en) * | 2002-07-16 | 2004-01-21 | 同济大学 | Outer prestress system and its construction process |
| CN1572381A (en) * | 2003-06-18 | 2005-02-02 | 黑泽建设株式会社 | Method of forming corrosion protection double coatings on prestressing strand and prestressing strand produced by the method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3519341B2 (en) | 2000-05-31 | 2004-04-12 | ドーピー建設工業株式会社 | Prestressed concrete member, method for producing the same, and method for confirming filling of grout material |
| KR100351427B1 (en) * | 2000-11-20 | 2002-09-05 | 두산중공업 주식회사 | The process and device for repairing the leaks of water cooled the stator bars of the turbin generator |
| JP4072895B2 (en) | 2002-08-12 | 2008-04-09 | 三井住友建設株式会社 | Grout filling confirmation method and sheath with observation hole |
-
2009
- 2009-07-24 KR KR1020090067545A patent/KR100966457B1/en active IP Right Grant
-
2010
- 2010-07-05 CN CN201080005416.2A patent/CN102292779B/en not_active Expired - Fee Related
- 2010-07-05 WO PCT/KR2010/004356 patent/WO2011010814A2/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1469058A (en) * | 2002-07-16 | 2004-01-21 | 同济大学 | Outer prestress system and its construction process |
| CN1572381A (en) * | 2003-06-18 | 2005-02-02 | 黑泽建设株式会社 | Method of forming corrosion protection double coatings on prestressing strand and prestressing strand produced by the method |
Non-Patent Citations (4)
| Title |
|---|
| JP特开2001-336251A 2001.12.07 |
| JP特开2004-76292A 2004.03.11 |
| 后张无粘结预应力成套技术;李晨光等;《建筑工人》;20061031(第10期);6-9 * |
| 李晨光等.后张无粘结预应力成套技术.《建筑工人》.2006,(第10期),6-9. |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011010814A3 (en) | 2011-04-14 |
| WO2011010814A2 (en) | 2011-01-27 |
| CN102292779A (en) | 2011-12-21 |
| KR100966457B1 (en) | 2010-06-28 |
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