CN107024305A - The method of bridge structure intelligence reinforcement assembly and fiber-optic grating sensor compoiste adhering - Google Patents
The method of bridge structure intelligence reinforcement assembly and fiber-optic grating sensor compoiste adhering Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
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Abstract
The invention discloses the method for a kind of intelligent reinforcement assembly of bridge structure and fiber-optic grating sensor compoiste adhering, wherein bridge structure reinforcement assembly includes：Carbon fibre bar material, is coated with fiber-optic grating sensor and the covering portion bonded with the carbon fibre bar material surface, and the anchor structure that the two ends of carbon fibre bar material and beam body are fixed, the fiber grating being connected with the fiber-optic grating sensor reconciles instrument；The fiber-optic grating sensor is many of the parallel laying multimode fibres or single-mode fiber for being written with one or more fiber gratings.The present invention can improve fiber-optic grating sensor and the survival rate after carbon fibre bar material compoiste adhering, the production cost of the intelligent carbon fibre bar material of reduction, Study On Intelligent Monitoring Techniques are used for the supervision of pre-stressed carbon fiber reinforcement bridge structure construction quality, and realize that bridge structure reinforces efficiency and health and safety long term monitoring.
Description
Technical field
The present invention relates to the intelligent reinforcing engineering of building and bridge structure and the technology of structure intelligent health and safety monitoring, especially
It is related to the method that carbon fibre bar material and carbon fiber board are bonded with fiber-optic grating sensor.
Background technology
The technology reinforced using intelligent prestress carbon fiber board muscle to bridge structure, be by the use of carbon fiber board muscle as
Presstressed reinforcing steel material, by special tensioning, anchor, applies prestressing force to carbon fiber board muscle and is anchored in reinforcement bridge top
On structural elements, bonded with bridge by curved tensional element by epoxy structural rubber or concrete consolidation is to carry tension, it can
So that the advantage of the active reinforcement technique of external prestressing and carbon fibre composite high-intensity performance to be combined together.
At present, it is external possess apply to the enterprise of concrete structure pre-stressed carbon fiber reinforcement technique and have Switzerland's west card
（Sika）Group and U.S. Simpson (Simpson Strong-Tie Asia Ltd), its major product is 100mm or 50mm
Width, carbon fiber rectangular thin plate thick 1~3mm applies to the reinforcing of Short/Medium Span Bridge reinforced concrete structure, but foreign countries in advance should
Power CFRP strengthening techniques are intelligent, do not inquire related small bridge structural strengthening also temporarily and implement with case report.
And the domestic research and development of using undergone nearly ten years, also achieve some bridge strengthenings construction field experience, although city
Pre-stressed carbon fiber anchorage and tensioning equipment manufacturer are more on field, because of related codes and standards imperfection, particularly intelligence
Monitoring technology has much room for improvement or solved, and is driven its quality to be in very different phenomenon by illegal profit.
Patent（CN 1057 16758 A）" intelligent carbon plate of a kind of fibre reinforced plastics and preparation method thereof " is disclosed, is carried
Go out fiber-optic grating sensor and the method for carbon fiber composite molding in carbon plate pultrusion production.The patent uses single-mode fiber
Grating sensor is implanted into compound tense, same with carbon fiber because fiber-optic grating sensor is relatively large in diameter and wire rod tensile-sbear strength is relatively low
Walk pultrusion enter mould when, because the straight irregular arrangement of carbon fiber easily cause optical patchcord draw break it is bad, so easily going out existing
The phenomenon that motility rate is relatively low or fiber-optic grating sensor accuracy declines.Simultaneously as fiber-optic grating sensor cross-sectional area is larger,
The volume content of carbon fiber is reduced after implantation is compound, causes muscle material specific strength significantly to decline.Secondly, fiber-optic grating sensor
Gauge or diameter of wire is smaller, and fused fiber splice brings bigger difficulty after carbon plate cutting when also to use.
The content of the invention
The present invention is in order to solve the above-mentioned problems in the prior art, it is proposed that a kind of intelligent reinforcing group of bridge structure
Part, including：Carbon fibre bar material, is coated with fiber-optic grating sensor and the covering portion bonded with the carbon fibre bar material surface, will
The anchor structure that the two ends of carbon fibre bar material are fixed with beam body, the fiber grating being connected with the fiber-optic grating sensor is reconciled
Instrument, receives the memory that simultaneously storing fiber optic grating reconciles the use state data for the carbon fibre bar material that instrument is collected, passes through Internet of Things
Net obtains the use state data and carries out the data analysis center of structural health safety analysis.
The fiber-optic grating sensor be parallel to carbon fiber Impact direction lay one or more be written with one or
The multimode fibre or single-mode fiber of multiple fiber gratings.
It is preferred that, the fiber-optic grating sensor is located between two anchor structures.
In the first embodiment, the covering portion is to be wrapped on the outside of the light grating sensor and be bonded in carbon fiber
The thermosetting or thermoplastic resin layer on muscle material surface.
In a second embodiment, the cladding position is wrapped on the outside of the light grating sensor and is bonded in carbon fiber
The hot melt plastic glue-line on muscle material surface, the hot melt plastic glue-line outer wrapping and its mutual cohesive thermal contraction casing tube.
The carbon fibre bar material can be lamellar, and its width is 10~100mm, and thickness is 1~10mm, width and thickness
Degree is than being ＞ 10.In a preferred scheme, carbon fibre bar material width is 30~20mm, and thickness is 2~4mm, width and thickness ratio
For ＜ 10.The carbon fibre bar material can also be cylindrical bar, a diameter of 3~50mm.
It is preferred that, fiber content >=65% of the carbon fibre bar material meets national standard《GB50728》It is required that.
The invention also provides a kind of method by carbon fibre bar material and fiber-optic grating sensor compoiste adhering, including it is as follows
Step：
Step 1：Fiber and reinforced resin are put into mould, pass through pultrusion composite molding method formation carbon fibre bar material；
Step 2：Carbon fibre bar material length needed for is cut out；
Step 3：Fiber-optic grating sensor is laid on carbon fibre bar material surface；
Step 4：Use pultrusion composite molding method or hot melt again, make clad be coated on the outside of fiber-optic grating sensor and with
Carbon fibre bar material is bonded；Or hot melt plastic glue-line and thermal contraction casing tube are arranged, and hot melt plastic glue-line is melted, make hot melt plastic glue-line
It is coated on the outside of fiber-optic grating sensor and is bonded with carbon fibre bar material and thermal contraction casing tube.
The present invention compared with prior art, possesses following advantage：
1st, the present invention uses the wide 10~100mm of muscle material, preferably 30~20 ㎜, and thickness is 1~10mm, preferably 2~4mm carbon fiber
Muscle（Plate）Or a diameter of 3~50mm circles muscle, fiber stress concentration degree is good, control stress for prestressing is big, stock utilization is high；
2nd, single mode or multi-mode optica lfiber grating sensor and matching demodulation instrument strong applicability, with preferable cost performance；
3rd, carbon fibre bar material is bonded using secondary resin compoiste adhering or thermoplastic cement fusion, single mode or multi-mode optica lfiber grating sensing
Device good reliability, survival rate are high；
4th, it can realize that the data of strengthening construction quality quantify supervision, the data quantitative evaluation of Design of Reinforcement can be realized again and in advance should
Power loss monitoring, what is more important, which is based on technology of Internet of things, can realize bridge structure Long Period Health Monitoring.
Brief description of the drawings
Fig. 1 is the structural representation of first embodiment of the invention；
Fig. 2 is the structural representation of first embodiment one of carbon fibre bar material of the present invention；
Fig. 3 is another structural representation of first embodiment of carbon fibre bar material of the present invention；
Fig. 4 is the structural representation of second embodiment one of carbon fibre bar material of the present invention；
Fig. 5 is another structural representation of second embodiment of carbon fibre bar material of the present invention；
Fig. 6 is the structural representation of anchor structure of the present invention；
Fig. 7 is application structure schematic diagram of the invention.
Embodiment
As shown in figure 1, the principal rod material of bridge intelligence structure reinforcement assembly proposed by the present invention uses carbon fibre bar material 1,
Axial direction of the fiber-optic grating sensor 2 along carbon fibre bar material 1（Fibre length direction, is also Impact direction）It is laid on carbon fine
The surface of muscle material 1 is tieed up, is bonded together by covering portion with carbon fibre bar material 1.Anchor structure 3 can be by the two of carbon fibre bar material 1
End is fixed with beam body, and fiber grating reconciles what instrument 4 was connected with fiber-optic grating sensor 2, the memory 5 with superelevation amount of storage
（Also it is big data memory）The stress for receiving and storing the carbon fibre bar material 1 that each fiber grating conciliation instrument is collected is used
Status data, then data analysis center 6 the stress use state of carbon fibre bar material 1 is obtained from memory by Internet of Things 7
Data are simultaneously analyzed, and have so both been realized that the data of the strengthening construction quality of erecting bed quantified supervision, and can have been realized that reinforcing is set again
The data quantitative evaluation of meter and loss of prestress monitoring, what is more important, which is based on technology of Internet of things, can realize that bridge structure is long-term
The long-range or networking monitoring of health.
In the present invention, fiber-optic grating sensor 2 can be parallel to one or more of carbon fiber Impact direction laying
It is written with the fiber-optic grating sensor of the single-mode fiber or multimode fibre of one or more fiber gratings, covering portion and its inside
It is arranged between anchor structure 3, can so avoids clad when being fixed by anchor structure and beam body, it is possible to appearance
Anchoring clamping compression shear is damaged, so that the situation of the collection of data is influenceed, and also covering portion is to fiber-optic grating sensor and connecting line
Material realizes compoiste adhering simultaneously, it is to avoid conventional outer sensor anchoring bond peeling, therefore, and fiber grating reconciles instrument 4 can
Middle part can also be connected to be connected to the end of fiber-optic grating sensor.Certainly it is coated with the covering portion of fiber-optic grating sensor
Can also be isometric with carbon fibre bar material stress section, now, fiber grating reconciles instrument and the optical fiber between two anchor structures 3
Grating sensor is connected by wire jumper.
Fig. 2, Fig. 3 show the fixed knot of carbon fibre bar material 1 and fiber-optic grating sensor 2 in first embodiment of the invention
Structure, in this embodiment, is shown in the figure 2 fiber-optic grating sensors 2.By secondary formed by extrusion and tension composite algorithm, make thermosetting
Property or thermoplastic resin layer 8 be wrapped in fiber-optic grating sensor 2, and thermosetting or thermoplastic resin layer 8 are glued with carbon fibre bar material 1
Knot.When it is in flat bar that carbon fibre bar material 1 is overall, the length direction and carbon fiber of multimode fibre or single-mode fiber grating sensor
The length direction of muscle material 1 is consistent, and multifiber grating sensor is arranged evenly and at intervals along the direction vertically with length direction
On the surface of carbon fibre bar material 1, upper surface is shown in the figure.When the overall bar shaped in circle of carbon fibre bar material 1, multimode or single mode
The length direction of fiber-optic grating sensor is consistent with the length direction of carbon fibre bar material 1, and multifiber grating sensor is in circumference
Arranged evenly and at intervals on direction, thermosetting or thermoplastic resin layer are covered on the outer circumference surface of carbon fibre bar material 1.
In the structure shown here, by the method for carbon fibre bar material and fiber-optic grating sensor compoiste adhering, comprise the following steps：
1) first fiber and reinforced resin are put into mould, pass through first time pultrusion composite molding method formation carbon fibre bar material；
2) carbon fibre bar material is cut out to needing length according to requirement of engineering；
3) fiber-optic grating sensor is laid on carbon fibre bar material surface, scrapes and smear covered composite yarn binding resin；
4) use pultrusion mould composite molding again, make clad be coated on the outside of fiber-optic grating sensor and with carbon fibre bar material
Realize adhesive solidification.
The advantage of the method is that carbon fibre bar material glues anchoring and do not influence muscle material composite quality and intensity in vitro, can be according to need
To use single mode or multi-mode optica lfiber grating sensor, fiber-optic grating sensor be arranged between two ends anchorage or anchor plate muscle material by
Power section, not only viscous anchoring easily guarantee, tensioning clamping compression shear not damaged, survival rate pinpoint accuracy are good outside fiber-optic grating sensor, and
And reliable, the convenient, cost of implementation is controllable, so, the good application easy to spread of comprehensive cost performance.
Further optimal way is in the present embodiment：Carbon fibre bar material surface recombination bonds single mode or multi-mode optica lfiber grating
Sensor, its outward appearance both can be rectangle or width local crowning parallel above and below width after shaping
Square or width is in circular shape.Meanwhile, carbon fibre bar material can also up and down two surfaces all compoiste adhering single modes or many
Mode fiber grating sensor.
Fig. 4, Fig. 5 show the fixed knot of carbon fibre bar material 1 and fiber-optic grating sensor 2 in second embodiment of the invention
Structure, in this embodiment, is shown in the figure 2 fiber-optic grating sensors 2.Wrapped up from the inside to the outside on the outer wall of carbon fibre bar material 1
Hot melt plastic glue-line 9 and thermal contraction casing tube 10, hot melt plastic glue-line 9 uses the relatively low interior thermal contraction casing tube of fusing point, its fusing point
Less than outer heat shrink sleeve pipe, and outer heat shrink sleeve pipe be using among PE, EVA, PVC, PET one of or two or more be made
Thermoplastic resin membrane.No matter carbon fibre bar material 1 is flat bar shaped or cylinder, hot melt plastic glue-line and thermal contraction casing tube all according to
On the surrounding outer wall of secondary whole wrap carbon fiber muscle material 1.
In the structure shown here, by the method for carbon fibre bar material and fiber-optic grating sensor bond-anchorage, comprise the following steps：
1) it is also that first fiber and reinforced resin are put into mould, passes through pultrusion composite molding method formation carbon fibre bar material；
2) carbon fibre bar material is cut out to needing length according to requirement of engineering；
3) fiber-optic grating sensor is then laid on carbon fibre bar material surface, and is fixed using binding agent local bonding；
4) interior hot melt adhesive layer and outer heat shrink plastic cement bilayer sleeve are arranged outside, is made using external heating method after interior hot melt adhesive layer melting
Realize with carbon fibre bar material bond-anchorage on the outside of fiber-optic grating sensor, rapid desufflation cladding pressure after outer heat shrink plastic layer is heated
Patch, so as to realize external optical fiber grating sensor and carbon fibre bar material bond-anchorage.
The advantage of the method is that bonding does not influence muscle material composite quality and intensity to carbon fibre bar material in vitro, can be as needed
Using single-mode fiber or multi-mode optica lfiber grating sensor；Because outer layer thermoplastic resin possesses preferable intensity and toughness, not only
There are the defencive functions such as anti-puncture, anti-scratch destruction to carbon fiber, and clamped when two ends anchorage is engaged to the tensioning of carbon fibre bar material
When, also there is preferable anti-puncture defencive function to optical fiber, so, optical fiber both may be disposed at muscle material between two ends anchorage or anchor plate
Stress section, can also press the elongated arrangement of muscle material.The method is further advantage is that not only fiber-optic grating sensor bond-anchorage
Easily ensure, survival rate is high, accuracy is good, it is excellent with more convenient, reliable in quality, with low cost etc. is implemented relative to former approach
Gesture, so, comprehensive cost performance is good, more for application value.
Further preferred embodiment is：In first and second embodiment, single-mode fiber or multi-mode optica lfiber grating sensing
Device outer surface, laying one layer of two-way fibrous web lattice cloth of covering, its width is the width or circumference appearance after muscle material compoiste adhering
It is more than fiber-optic grating sensor length Deng, length.It is act as by long fibres such as muscle material width or circumference（Laterally）, to light
Fiber grating sensor is bonded with muscle material compoiste adhering from point bonding transition for face, can not only be improved bond quality, can more be improved
Perception accuracy of the fiber-optic grating sensor to muscle material ess-strain.
In the above-described embodiments, the fiber content of carbon fibre bar material 1 is more than or equal to 65%, and when carbon fibre bar material 1 uses muscle
During tabular, depending on its length is according to Specific construction situation, its width is 10~100mm, and preferably 20 ㎜, thickness is 1~10mm,
Preferably 2.5mm, width and thickness ratio are 3~100, preferably 8.
Fig. 6, Fig. 7 show that the present invention applies the concrete application example in construction of bridge T girder construction.Fig. 6 is shown in example
One pre-stressed carbon fiber stretch-draw anchor structure, including be arranged on T beam left ends and be followed successively by jack 11, counter-force from outside to inside
Frame 12, stretching end lock platform 14, the stretching end bottom plate 15 and carbon fiber anchorage being fixedly connected by glue anchor screw 13 with beam body 17
3rd, carbon fibre bar material 1；On T beam right-hand members carbon fiber anchorage 3, fixing end lock platform 14 are followed successively by from the inside to the outside, by glue anchor spiral shell
The fixing end bottom plates 16 that are fixedly connected with beam body 17 of nail 13, the exposed surface of carbon fibre bar material 1 have by first or two embodiment it is compound
Cohesive fiber-optic grating sensor 2.
The jack 11 for being installed on the front end of reaction frame 12 connects carbon fiber anchorage 3 by draw bolt, to carbon fibre bar material 1
Implement prestressed stretch-draw, control stress for prestressing is reached after design requirement, lock platform 14 is installed and using nut locking, lock platform 14
Linked by screw, pin key or groove and bottom plate 15,16, bottom plate 15,16 is fixedly connected simultaneously by glue anchor screw 13 with beam body 17
The newly-increased tension stress of transmission.Fiber-optic grating sensor 2 and the compoiste adhering anchorage reliability of carbon fibre bar material 1 are good, stress deformation
Synchronous elongation, when the light source of external (FBG) demodulator enters fiber-optic grating sensor, the centre wavelength of its light is by muscle material 1 and sensor 2
Stress deformation and produce change, by monitoring this change so as to which whether the ess-strain for obtaining muscle material 1 meets Design of Reinforcement
And construction quality requirement, realize the digitization supervision of pre-stressed carbon fiber intelligent tensioning work progress and quality.
Fig. 7 shows the concrete application example in construction of bridge T girder construction.The bottom of T girder constructions 17 sets three in advance in example
Stress carbon fibre bar material 1, is open to traffic after the completion of strengthening construction（Or load test）When, the natural downwarp carbon of T girder constructions 17 is fine
Muscle material 1 and the synchronous anamorphic stretching of fiber-optic grating sensor 2 are tieed up, the centre wavelength that external (FBG) demodulator perceives light source produces change, led to
Cross and monitor this change so as to obtain strain and the deflection deformation of T girder constructions of muscle material 1, the light wave curve of demodulation is subjected to numeral
Change and handle and compress storage, data analysis center is sent to by Internet of Things, so as to realize that bridge structure reinforces the evaluation of efficiency.
Bridge structure strenthening member is to be damaged or fragile component, using intelligence structure reinforcement assembly reinforcement bridge knot
Structure, realizes long term monitoring using the intelligent characteristic after carbon fibre bar material 1 and the compoiste adhering of fiber-optic grating sensor 2, can not only supervise
The prestressing force slack conditions of carbon determination fiber bar material 1, it can also realizing bridge structure health safety monitoring.
As shown in Figure 6, Figure 7, anchor structure includes the stretching end anchor plate 11 for being arranged on stretching end, successively will from outside to inside
Jack 13 that the one end of carbon fibre bar material 1 is fixedly connected with stretching end anchor plate 11, reaction frame 14, stretching end lock platform 15,
Pull end anchorage 16, is arranged on the fixing end anchor plate 12 of fixing end, from outside to inside successively by the other end of carbon fibre bar material 1 with consolidating
Fixing end lock platform 17 that fixed end anchor plate 12 is fixedly connected, fixing end anchorage 18, stretching end anchor plate 11 and fixing end anchoring
Plate 12 is fixedly connected by glue anchor screw 19 with beam body 20.In order to which effect is used in the implementation for optimizing and improving the present invention, other
Technical characteristic is identical in embodiment, and difference is：The fiber-optic grating sensor 2 of the compoiste adhering of carbon fibre bar material 1 is parallel
Two or many single-mode fibers for being written with one or more fiber gratings or the multimode light laid in carbon fiber Impact direction
It is fine.
Embodiments above is only to the structure for illustrating the present invention, and one of ordinary skill in the art is in the present invention
Design under can make various deformation and change, these deformation and change be included within protection scope of the present invention.
Claims (10)
1. a kind of intelligent reinforcement assembly of bridge structure, it is characterised in that including：Carbon fibre bar material, is coated with optical fiber grating sensing
Device and the covering portion bonded with the carbon fibre bar material surface, the anchor structure that the two ends of carbon fibre bar material and beam body are fixed,
The fiber grating being connected with the fiber-optic grating sensor reconciles instrument；
The fiber-optic grating sensor is many of the parallel laying multimode fibres or list for being written with one or more fiber gratings
Mode fiber.
2. the intelligent reinforcement assembly of bridge structure as claimed in claim 1, it is characterised in that the fiber-optic grating sensor is located at
Between two anchor structures.
3. the intelligent reinforcement assembly of bridge structure as claimed in claim 1, it is characterised in that the covering portion is described to be wrapped in
Light grating sensor outside and the thermosetting or thermoplastic resin layer for being bonded in carbon fibre bar material surface.
4. the intelligent reinforcement assembly of bridge structure as claimed in claim 1, it is characterised in that the cladding position is wrapped in described
On the outside of light grating sensor and be bonded in the hot melt plastic glue-line on carbon fibre bar material surface, the hot melt plastic glue-line outer wrapping with
Its mutual cohesive thermal contraction casing tube.
5. the intelligent reinforcement assembly of bridge structure as described in claim 2 to 4 any one claim, it is characterised in that institute
Carbon fibre bar material is stated for tabular, its width is 10~100mm, thickness is 1~10mm, and width and thickness ratio are 3~100.
6. the intelligent reinforcement assembly of bridge structure as described in claim 2 to 4 any one claim, it is characterised in that institute
It is cylinder, a diameter of 3~50mm to state carbon fibre bar material.
7. the intelligent reinforcement assembly of bridge structure as claimed in claim 1, it is characterised in that the fiber of the carbon fibre bar material contains
Amount is more than or equal to 60%.
8. the intelligent reinforcement assembly of bridge structure as claimed in claim 1, it is characterised in that also including receiving simultaneously storing fiber optic light
Grid reconcile the memory of the use state data for the carbon fibre bar material that instrument is collected, and the use state number is obtained by Internet of Things
According to and carry out the data analysis center of structural health safety analysis.
9. the intelligent reinforcement assembly of bridge structure as claimed in claim 1, it is characterised in that outside the fiber-optic grating sensor
Surface laying one layer of two-way fibrous web lattice cloth of covering, its width is equal for the width or circumference after muscle material compoiste adhering, long
Spend for more than fiber-optic grating sensor length, grid spacing is 1~20mm.
10. a kind of method by carbon fibre bar material and fiber-optic grating sensor compoiste adhering, it is characterised in that including following step
Suddenly：
Step 1：Fiber and reinforced resin are put into mould, pass through pultrusion composite molding method formation carbon fibre bar material；
Step 2：Carbon fibre bar material length needed for is cut out；
Step 3：Fiber-optic grating sensor is laid on carbon fibre bar material surface；
Step 4：Use pultrusion composite molding method or hot melt again, make clad be coated on the outside of fiber-optic grating sensor and with
Carbon fibre bar material is bonded；Or hot melt plastic glue-line and thermal contraction casing tube are arranged, and hot melt plastic glue-line is melted, make hot melt plastic glue-line
It is coated on the outside of fiber-optic grating sensor and is bonded with carbon fibre bar material and thermal contraction casing tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266914.6A CN107024305A (en) | 2017-04-21 | 2017-04-21 | The method of bridge structure intelligence reinforcement assembly and fiber-optic grating sensor compoiste adhering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266914.6A CN107024305A (en) | 2017-04-21 | 2017-04-21 | The method of bridge structure intelligence reinforcement assembly and fiber-optic grating sensor compoiste adhering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107024305A true CN107024305A (en) | 2017-08-08 |
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| CN110939062A (en) * | 2019-12-22 | 2020-03-31 | 智性纤维复合加固南通有限公司 | Self-sensing extrusion inhaul cable and manufacturing method thereof |
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Application publication date: 20170808 |