CN102680156A - Coupled external mounted steel stay rope force detection device and method - Google Patents
Coupled external mounted steel stay rope force detection device and method Download PDFInfo
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- CN102680156A CN102680156A CN2012101370581A CN201210137058A CN102680156A CN 102680156 A CN102680156 A CN 102680156A CN 2012101370581 A CN2012101370581 A CN 2012101370581A CN 201210137058 A CN201210137058 A CN 201210137058A CN 102680156 A CN102680156 A CN 102680156A
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Abstract
The invention discloses a coupled external mounted steel stay rope force detection device and a method. The device comprises an excitation assembly and a winding displacement coupling sensor, wherein the excitation assembly comprises a magnetic core, an excitation coil with a capacitive discharge circuit is sheathed on the magnetic core, a first magnetic pole and a second magnetic pole are arranged at two ends of the magnetic core and are respectively provided with a first press plate and a second press plate, the first magnetic pole and the first press plate are detachably connected, the second magnetic pole and the second press plate are detachably connected, a first clamp hole is arranged at a connecting part of the first magnetic pole and the first press plate, a second clamp hole is arranged at a connecting part of the second magnetic pole and the second press plate, and round lining pads are arranged on the inner walls of the first clamping hole and the second clamping hole. The method comprises the following steps that the device is used for detection, and in addition, magnetic feature curves of a steel stay rope to be detected are obtained; the device is used for detection, in addition, a group of standard magnetic feature curves are obtained; and the magnetic feature curves of the steel stay rope to be detected are compared with the group of standard magnetic feature curves to obtain the tension in the steel stay rope to be detected.
Description
Technical field
The present invention relates to Physics of Magnetism, electrotechnics, the Intelligent Measurement technology of ferromagnetic material, be specifically related to the steel cable in monitoring structural health conditions field or the tension or the tension measurement of steel rod elements, also relate to the magnetomechanical effect and the magnetization characteristic of ferromagnetic material.
Technical background
Steel cable is as the core component in the important building structure such as different types of rridges, stadiums, and its safety problem is most important, is the important means that guarantees its security to the monitoring of steel cable pulling force.Present detection method mainly contains:
1, manometric method
Claim the lifting jack method again, it is when using the jack tension steel cable, to detect stretching force through measuring oil pressure, and the measurement of oil pressure can be accomplished through tensimeter or pressure transducer, and this method is applicable to the detection in the work progress.
2, the pulling force direct method of measurement
Pulling force sensor measurement steel cable Suo Li directly is being installed on the dragline anchorage or on the ground tackle connecting link, and this method cost is high, and uses very inconvenient.
3, frequency method
Measure the natural frequency of vibration of steel cable, utilize the relation of the natural frequency of vibration and Suo Li to measure Suo Li, this method is suitable for the detection of active service steel cable, but because there is complicacy in the relation of the natural frequency of vibration and Suo Li, on using, limitation is arranged.
4, magnetomechanical effect method
Magnetomechanics (magnetomechanical) effect was found in for 19th century; Canada has specialized in the influence of ferromagnetic material internal stress to magnetic history at the beginning of the eighties; The U.S. has developed telescopic magnetic flux transducer and Suo Li detector after 2000, and Germany and France have also developed eddy current sensor and Suo Li detector.Conclusion is got up, and existing have following two kinds of implementation methods based on magnetomechanical effect method detection steel cable Suo Li:
(1) magnetic flux mensuration: be made into telescopic magnetic flux transducer; At first measure the variation of magnetic flux; Be converted into relative permeability again, utilize the relation of magnetic permeability and tension to measure Suo Li, this method must install sensor when construction; On-disconnectable removing, Fig. 1 is the synoptic diagram of this method.
(2) inductance value mensuration: because the existence of magnetomechanical effect, with steel cable near the inductance value of coil can receive the influence of tension, the inductance value of measuring coil promptly can be converted into Suo Li.This method has two kinds of ways again, and the one, inductance value mensuration (claiming eddy-current method again, the EC sensor) radially; It is vertical with steel cable promptly to measure coil; In order to reach measurement data preferably, at the coil of periphery more than at least 6, sensor and surveying instrument are comparatively complicated according to the steel cable diameter; Effect is general, and Fig. 2 is the synoptic diagram of this method; The 2nd, axial inductance value mensuration, it is peripheral around steel cable promptly to measure coil, and this method needs coiling at the scene, and Fig. 3 is the synoptic diagram of this method.The inductance value mensuration can only reflect the internal stress of steel cable top layer steel wire, can not reflect the magnetomechanical effect that drag-line is whole.
In sum, also there is two large problems at present in steel cable Suo Li detection method:
1, the Suo Li detection problem of active service steel cable does not have fine solution
Use to such an extent that comparatively ripe rope force detection sensor is telescopic magnetic flux transducer both at home and abroad; Only when stretching construction, set up; Could satisfy the online detection of operational phase, not only waste is big, and limited service life; What is more important, a large amount of active service steel cables do not dispose this sensor.Though, can adopt the method for on-the-spot coiling to make magnetic flux transducer or inductance value sensor, there are problems such as big, the consuming time length of difficulty, detection and demarcation state be inconsistent in this method.
2, detection sensitivity is low, repeatability is bad
Though magnetic flux transducer or inductance value sensor have utilized magnetomechanical effect; But they have only measured the single-point parameter on the ferromagnetic material magnetization characteristic; Be near magnetic permeability or the inductance value certain working point, certainly exist like this that susceptibility to pulling force is low, the problem of bad measurement repeatability.
Summary of the invention
The present invention provides a kind of can measure coupled mode fitted outside steel cable cable force detecting device and method highly sensitive and good reproducibility to active service steel cable enforcement Suo Li detection and tool.
The present invention adopts following technical scheme:
A kind of coupled mode fitted outside steel cable cable force detecting device of the present invention comprises: excitatory assembly and winding displacement formula coupled-inductors, and said excitatory assembly comprises magnetic core; On magnetic core, be arranged with magnetizing coil; At the two ends of magnetizing coil and be connected to the condenser type discharge circuit, be respectively equipped with first magnetic pole and second magnetic pole at the two ends of magnetic core, be respectively equipped with first pressing plate and second pressing plate at first magnetic pole and second magnetic pole; And; For removable jew is connected, for removable jew is connected, be provided with first clamping hole that is used for the clamping steel cable in the junction of first magnetic pole and first pressing plate between second magnetic pole and second pressing plate between first magnetic pole and first pressing plate; Be provided with second clamping hole that is used for the clamping steel cable in the junction of second magnetic pole and second pressing plate, on the inwall of first clamping hole and second clamping hole, be respectively equipped with ring gasket; Said winding displacement formula coupled-inductors comprises lead in a row, is connected with contact pin at an end of every lead, is connected with the jack that is complementary with contact pin at the other end of every lead, is connected for plug-in between the jack on the contact pin on each root lead and the adjacent wires.
A kind of coupled mode fitted outside steel cable cable force detecting device that utilizes of the present invention carries out the method that Suo Li detects,
Described normal magnetization family curve assay method is: open the condenser type discharge circuit be connected with excitatory assembly and discharged by the magnetizing coil of condenser type discharge circuit in excitatory assembly; Thereby in demarcating, produce magnetic field intensity with steel cable; Simultaneously; Detect and obtain the exciting curent in the magnetizing coil; The demarcation that said winding displacement formula coupled-inductors obtains to contain pulling force information through induction detects and obtains the voltage in the winding displacement formula coupled-inductors simultaneously with the magnetic induction density in the steel cable, forms the magnetization characteristic of demarcation with steel cable by the voltage in exciting curent in the magnetizing coil and the winding displacement formula coupled-inductors again; And use the magnetization characteristic of steel cable to be the normal magnetization family curve to demarcate
The invention has the advantages that:
1, having solved telescopic magnetic flux transducer can't be to the tension measurement problem of active service steel cable or steel rod elements.Because excitatory assembly adopted external-mounted structure, can be clamped in easily on the tested member, and need be in the construction stage just with sensor sleeve on steel cable.Winding displacement formula inductor has been adopted in the detection of coupled signal, does not need on-the-spot coiling, convenient mounting or dismounting.Because the present invention has adopted capacitor discharging circuit, makes that the induced voltage signal in the inductive coupling coil is bigger, therefore, detection method of the present invention does not have too much requirement to the quantity of the number of turn of inductive coil, thereby winding displacement formula coupled-inductors is achieved.
2, measurement sensitivity and repeatability have been improved.Measuring principle of the present invention is to utilize magnetomechanical effect; The essence of magnetomechanical effect is that the ferromagnetic material magnetization characteristic changes (this is a process) with stress; And the variation of the variation of magnetic permeability or inductance value is two kinds of presentations of this effect; And magnetic permeability or inductance value parameter can change along with the difference of the working point on the magnetization characteristic.With these two kinds of methods (measuring magnetic permeability through magnetic flux, directly the inductance measuring amount) difference, the present invention simply measures magnetic permeability or the such single parameter of inductance value detects steel cable stretching force; But detect through magnetization characteristic; Therefore the susceptibility of counter stress is high, and owing to the overall process of measuring process through the electromagnetic energy conversion, measurement result is not magnetized the influence of working point again; The measured value of stress is to draw after a lot of data processing, so measuring repeatability is good.Fig. 7 has shown measuring method of the present invention and other two kinds of method differences on principle, and among the figure, regional A is the measured zone of inductance value method, and is obviously insensitive to tension, during measurement only certain point in this zone carry out the measurement of inductance value; Area B is the measured zone of magnetic flux method, and this method is measured magnetic permeability through magnetic flux, and is maximum at this regional relative permeability, but should the zone also responsive inadequately to tension, during measurement only certain point in this zone carry out the measurement of relative permeability; Zone C is this mensuration region, and is obviously stronger to the susceptibility of tension.Shown in Figure 8 is measurement result of the present invention.
3, compare with the inductance value mensuration, measurement result is truer.Because it is excitatory that the inductance value mensuration does not apply steel cable, make the inner uniform magnetization of tested steel cable, so measurement result can only reflect the stress state on steel cable top layer.In fact, steel cable is made up of many strands of steel wires, and the stress of per share steel wire is all inhomogeneous, and inside and outside steel wire is stressed also inhomogeneous, and what we needed is the whole force-bearing situation of steel cable, therefore needs the excitatory steel cable inside that makes that uniform magnetic field is arranged.Measuring method of the present invention meets this requirement fully, and measurement result is more authentic and valid.
4, reduced the measurement cost.Because telescopic sensor need be installed on every steel cable when construction, cost is very high, and limited service life, and the present invention only needs when measuring, to install, and is promptly dismountable after having surveyed, reusable, and do not have life problems.
5, saved Measuring Time.Magnetic flux mensuration or inductance value mensuration need on-the-spot coiling, need isolated plant during coiling at the scene, and measuring needs the expensive time to remove after accomplishing.Therefore the present invention has saved Measuring Time owing to do not need on-the-spot coiling, and the overall process of accomplishing one-shot measurement only needs a few minutes.In addition, it is in full accord that on-the-spot coiling makes that measurement state and demarcation state are difficult to, and measurement result has deviation.And the present invention also efficiently solves this problem.
6, easy to use.Among the present invention, excitatory assembly is an integral body, only needs with pressing plate and fastening bolt its clamping to be got final product, and the winding displacement inductor only needs to get final product inserting.Electrical connector on the sensor also welds in advance, need not field fabrication, directly is connected and can measures with detecting instrument, uses very convenient.
Description of drawings
Fig. 1 is existing telescopic magnetic flux transducer synoptic diagram;
Fig. 2 is existing radial pulling force sensor synoptic diagram;
Fig. 3 is existing axial type pulling force sensor synoptic diagram;
Fig. 4 is an apparatus structure synoptic diagram of the present invention;
Fig. 5 is the side view of apparatus structure of the present invention;
Fig. 6 is the structural representation of winding displacement formula coupled-inductors of the present invention;
Fig. 7 is the magnetomechanical effect curve map of explanation principle of work of the present invention;
Fig. 8 is measurement result figure of the present invention.
Embodiment
A kind of coupled mode fitted outside steel cable cable force detecting device comprises: excitatory assembly and winding displacement formula coupled-inductors, and said excitatory assembly comprises magnetic core 2; On magnetic core 2, be arranged with magnetizing coil 3, at the two ends of magnetizing coil 3 and be connected to the condenser type discharge circuit, described condenser type discharge circuit can adopt condenser type discharge circuit common in the prior art; But; Condenser type discharge circuit role in the present invention is different from prior art, is to be used for the electric field energy moment that stores is converted into magnetic field energy, realizes the magnetization to tested steel cable; Be respectively equipped with first magnetic pole 41 and second magnetic pole 42 at the two ends of magnetic core 2; Be respectively equipped with first pressing plate 61 and second pressing plate 62 at first magnetic pole 41 and second magnetic pole 42, and, be connected for removable jew between first magnetic pole 41 and first pressing plate 61; Be connected for removable jew between second magnetic pole 42 and second pressing plate 62; Be provided with first clamping hole that is used for the clamping steel cable in the junction of first magnetic pole 41 and first pressing plate 61, be provided with second clamping hole that is used for the clamping steel cable, on the inwall of first clamping hole and second clamping hole, be respectively equipped with ring gasket 5 in the junction of second magnetic pole 42 and second pressing plate 62; Said winding displacement formula coupled-inductors comprises lead 8 in a row; End at every lead is connected with contact pin 9; The other end at every lead is connected with the jack 10 that is complementary with contact pin, is connected for plug-in between the jack on the contact pin on each root lead and the adjacent wires.
A kind of coupled mode fitted outside steel cable cable force detecting device that utilizes carries out the method that Suo Li detects,
Described normal magnetization family curve assay method is: open the condenser type discharge circuit be connected with excitatory assembly and discharged by the magnetizing coil 3 of condenser type discharge circuit in excitatory assembly; Thereby in demarcating, produce magnetic field intensity with steel cable; Simultaneously; Detect and obtain the exciting curent in the magnetizing coil 3; The demarcation that said winding displacement formula coupled-inductors obtains to contain pulling force information through induction detects and obtains the voltage in the winding displacement formula coupled-inductors simultaneously with the magnetic induction density in the steel cable, forms the magnetization characteristic of demarcation with steel cable by the voltage in exciting curent in the magnetizing coil 3 and the winding displacement formula coupled-inductors again; And use the magnetization characteristic of steel cable to be the normal magnetization family curve to demarcate
The concrete realization of coupled mode fitted outside steel cable cable force detecting device is following:
Coupled mode fitted outside steel cable cable force detecting device is made up of two parts.The one, excitatory assembly, the 2nd, winding displacement formula coupled-inductors, like Fig. 4, Fig. 5, shown in Figure 6, measurand 1 is born the member of tension (or compressive stress) for steel cable or steel rod elements etc.The composition of excitatory assembly and each several part function are following: magnetic core 2 is processed by electromagnetic pure iron, plays the magnetic conduction effect; Magnetizing coil 3 is used to produce excitatory magnetic field; First magnetic pole 41 and second magnetic pole 42 are processed by electromagnetic pure iron, and excitatory magnetic field intensity is imported tested steel cable; Ring gasket 5 is used to control the magnetic circuit gap, is non-magnet material; First pressing plate 61 and second pressing plate 62 are processed by electromagnetic pure iron, and it is comparatively even that excitatory magnetic field is distributed, through fastening bolt 7 with excitatory assembly and the clamping of tested steel cable.The winding displacement coupled-inductors is made up of winding displacement 8, contact pin 9, jack 10, and contact pin is connected with adjacent jack, when being wrapped in the steel cable periphery, constitutes the inductive coupling coil, is used to detect the magnetic induction density of the inner coupled magnetic field of steel cable.
Above-mentioned coupled mode fitted outside steel cable cable force detecting device can be installed on steel cable or steel rod elements easily, removes easily after finishing using.
The realization principle of coupled mode fitted outside steel cable Suo Li detection method is following:
Form a coupled mode electromagnetic induction device through magnetic core, magnetic pole, tested steel cable between magnetizing coil and the winding displacement inductor, after the drive coil energising magnetic field intensity is imported steel cable, and the winding displacement inductor detects the inner magnetic field intensity of steel cable.According to the magnetomechanical effect principle, when tested member receives when stretching, the inner tension of ferromagnetic material can make magnetization characteristic change.Shown in Figure 7 is a typical magnetization characteristic, and when tension increased, the magnetic induction density of magnetization characteristic had obviously and reduces.In exciting curent fast rise process, constantly detect the voltage signal in exciting curent signal and the winding displacement inductor, form magnetization characteristic, thereby realize the detection of pulling force.
Among the present invention, the method that applies magnetic field intensity to steel cable is to adopt capacity discharge method.During work, the electric discharge device at first electric capacity in discharge circuit charges, and electric field energy is stored in electric capacity, magnetizing coil is discharged after charging finishes again, and electric field energy is converted into magnetic field energy, and the process of discharge is the magnetized process of steel cable.Discharge process is very of short duration, can not make excitatory assembly heating, can use repeatedly continuously.In discharge process, exciting curent in the data acquisition module continuous acquisition magnetizing coil and the induced voltage signal in the winding displacement inductor.After discharge process finished, data acquisition module was preserved image data and handle, and shows testing result.
Because principle of the present invention is based on magnetomechanical effect, need carry out excitatoryly to tested steel cable or steel rod elements, and reach certain magnetic field intensity.Therefore, for the steel cable to be measured of different sizes, need the magnetizer of design different size.During enforcement, can design a series of steel cable Suo Li magnetizer to the steel cable size of stipulating in the standard, each magnetizer satisfies several kinds of steel cable sizes, and then magnetizer series can satisfy the detection demand of all steel cables.
Because principle of the present invention is based on magnetomechanical effect, need demarcate in advance the magnetization characteristic of tested drag-line or steel rod elements when therefore implementing.For the sake of simplicity, also can be in the steel cable work progress, the pressure transducer that utilization is accurate etc. carries out on-site proving.Nominal data will be stored in database, so that in the whole lifetime of steel cable, it is carried out health monitoring.
More than to the description of embodiment of the present invention further clear and definite implementing method of the present invention, but do not constitute restriction of right to apparatus and method of the present invention.Any improvement and modification that does not break away from apparatus of the present invention and method all belongs to interest field of the present invention.
Claims (2)
1. coupled mode fitted outside steel cable cable force detecting device; It is characterized in that; Comprise: excitatory assembly and winding displacement formula coupled-inductors; Said excitatory assembly comprises magnetic core (2), on magnetic core (2), is arranged with magnetizing coil (3), at the two ends of magnetizing coil (3) and be connected to the condenser type discharge circuit; Be respectively equipped with first magnetic pole (41) and second magnetic pole (42) at the two ends of magnetic core (2); Be respectively equipped with first pressing plate (61) and second pressing plate (62) at first magnetic pole (41) and second magnetic pole (42), and, be connected for removable jew between first magnetic pole (41) and first pressing plate (61); Be connected for removable jew between second magnetic pole (42) and second pressing plate (62); Junction at first magnetic pole (41) and first pressing plate (61) is provided with first clamping hole that is used for the clamping steel cable, is provided with second clamping hole that is used for the clamping steel cable in the junction of second magnetic pole (42) and second pressing plate (62), on the inwall of first clamping hole and second clamping hole, is respectively equipped with ring gasket (5); Said winding displacement formula coupled-inductors comprises lead in a row (8); End at every lead is connected with contact pin (9); The other end at every lead is connected with the jack (10) that is complementary with contact pin, is connected for plug-in between the jack on the contact pin on each root lead and the adjacent wires.
2. one kind is utilized the said coupled mode fitted outside of claim 1 steel cable cable force detecting device to carry out the method that Suo Li detects, it is characterized in that,
Step 1 forms energizing loop with excitatory assembly clamping in the steel cable outside to be detected and by excitatory assembly and steel cable to be detected; Lead in a row (8) in the winding displacement formula coupled-inductors is wrapped on the steel cable to be detected of energizing loop; Again the contact pin on each the root lead in the lead in a row (8) is inserted in the jack on the adjacent wires; Open the condenser type discharge circuit be connected with excitatory assembly and discharge by the magnetizing coil (3) of condenser type discharge circuit in excitatory assembly; Thereby in steel cable to be detected, produce magnetic field intensity, simultaneously, detect and obtain the exciting curent in the magnetizing coil (3); Said winding displacement formula coupled-inductors obtains to contain the magnetic induction density in the steel cable to be measured of pulling force information through induction; Detect and obtain the voltage in the winding displacement formula coupled-inductors simultaneously, form the magnetization characteristic of steel cable to be detected again by the voltage in exciting curent in the magnetizing coil (3) and the winding displacement formula coupled-inductors
Step 2 is got one section steel cable identical with steel cable to be detected and is used steel cable as demarcating; To demarcate with steel cable and be installed on the tension tester, excitatory assembly clamping is formed energizing loop with steel cable demarcating with the steel cable outside and by excitatory assembly and demarcation, the demarcation that the lead in a row (8) in the winding displacement formula coupled-inductors is wrapped in energizing loop is with on the steel cable; Again the contact pin on each the root lead in the lead in a row (8) is inserted in the jack on the adjacent wires; The opening pull force testing machine applies one group of pulling force to demarcating with steel cable, utilizes normal magnetization family curve assay method again; Obtain one group of normal magnetization family curve
Described normal magnetization family curve assay method is: open the condenser type discharge circuit be connected with excitatory assembly and discharged by the magnetizing coil (3) of condenser type discharge circuit in excitatory assembly; Thereby in demarcating, produce magnetic field intensity with steel cable; Simultaneously; Detect and obtain the exciting curent in the magnetizing coil (3); The demarcation that said winding displacement formula coupled-inductors obtains to contain pulling force information through induction detects and obtains the voltage in the winding displacement formula coupled-inductors simultaneously with the magnetic induction density in the steel cable, forms the magnetization characteristic of demarcation with steel cable by the voltage in exciting curent in the magnetizing coil (3) and the winding displacement formula coupled-inductors again; And use the magnetization characteristic of steel cable to be the normal magnetization family curve to demarcate
Step 3 compares magnetization characteristic and one group of normal magnetization family curve of steel cable to be detected, obtains the pulling force in the steel cable to be detected.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675721A (en) * | 2013-12-24 | 2014-03-26 | 江西飞尚科技有限公司 | Open-loop magnetic flux sensor |
| CN104266629A (en) * | 2014-10-11 | 2015-01-07 | 上海绿地建设(集团)有限公司 | Suspension cable strain measurement device |
| CN104568277A (en) * | 2015-01-27 | 2015-04-29 | 东南大学 | Cable force detection instrument and method suitable for active service cable |
| CN104698402A (en) * | 2015-03-03 | 2015-06-10 | 江西飞尚科技有限公司 | Ribbon cable detection method for magnetic flux of open loop magnetic flux sensor |
| CN104807585A (en) * | 2015-05-13 | 2015-07-29 | 上海同磊土木工程技术有限公司 | High-precision cable force testing instrument of magnetic permeability cable and test method thereof |
| CN108489641A (en) * | 2018-03-20 | 2018-09-04 | 重庆交通大学 | A kind of prestress wire stress measurement device and method |
| CN109100071A (en) * | 2018-08-24 | 2018-12-28 | 华中科技大学 | Parallel wire stay cable force detecting device |
| CN109269685A (en) * | 2018-10-21 | 2019-01-25 | 郑州大学 | A kind of concrete stress sensor and its application method |
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| KR20200042707A (en) * | 2018-10-16 | 2020-04-24 | 한국건설기술연구원 | Multi-measurement apparatus capable of simultaneously measuring tensile and sectional damage for a tendon |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1090818A (en) * | 1965-09-07 | 1967-11-15 | Armco Steel Corp | Furnace tensiometer |
| GB1347682A (en) * | 1971-04-19 | 1974-02-27 | Norseman Cable Measurements Lt | Apparatus for measuring loads in ropes or other elongate members |
| EP0452241A1 (en) * | 1990-04-09 | 1991-10-16 | Institut De Recherches De La Siderurgie Francaise (Irsid) | Procedure and device for the determination of the tension of a metallic band |
| CN201242481Y (en) * | 2008-08-21 | 2009-05-20 | 中国地震局工程力学研究所 | Electromagnetic induction type apparatus for detecting cord force |
| CN101858807A (en) * | 2010-06-10 | 2010-10-13 | 尹武良 | Steel cable tension measuring device based on rectangular hollow-core sensor and method thereof |
| CN201680938U (en) * | 2010-05-26 | 2010-12-22 | 丰满发电厂 | Prestressed cable real-time monitoring device |
| CN202661213U (en) * | 2012-05-04 | 2013-01-09 | 东南大学 | Coupled and externally-mounted steel stay rope force detection device |
-
2012
- 2012-05-04 CN CN 201210137058 patent/CN102680156B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1090818A (en) * | 1965-09-07 | 1967-11-15 | Armco Steel Corp | Furnace tensiometer |
| GB1347682A (en) * | 1971-04-19 | 1974-02-27 | Norseman Cable Measurements Lt | Apparatus for measuring loads in ropes or other elongate members |
| EP0452241A1 (en) * | 1990-04-09 | 1991-10-16 | Institut De Recherches De La Siderurgie Francaise (Irsid) | Procedure and device for the determination of the tension of a metallic band |
| CN201242481Y (en) * | 2008-08-21 | 2009-05-20 | 中国地震局工程力学研究所 | Electromagnetic induction type apparatus for detecting cord force |
| CN201680938U (en) * | 2010-05-26 | 2010-12-22 | 丰满发电厂 | Prestressed cable real-time monitoring device |
| CN101858807A (en) * | 2010-06-10 | 2010-10-13 | 尹武良 | Steel cable tension measuring device based on rectangular hollow-core sensor and method thereof |
| CN202661213U (en) * | 2012-05-04 | 2013-01-09 | 东南大学 | Coupled and externally-mounted steel stay rope force detection device |
Non-Patent Citations (1)
| Title |
|---|
| 韩庆华等: "预应力组合网架结构的理论分析与应用研究", 《建筑结构学报》, vol. 25, no. 01, 10 February 2004 (2004-02-10), pages 87 - 92 * |
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| CN103675721B (en) * | 2013-12-24 | 2017-01-18 | 江西飞尚科技有限公司 | Open-loop magnetic flux sensor |
| CN104266629A (en) * | 2014-10-11 | 2015-01-07 | 上海绿地建设(集团)有限公司 | Suspension cable strain measurement device |
| CN104568277A (en) * | 2015-01-27 | 2015-04-29 | 东南大学 | Cable force detection instrument and method suitable for active service cable |
| CN104568277B (en) * | 2015-01-27 | 2017-01-25 | 东南大学 | Cable force detection instrument and method suitable for active service cable |
| CN104698402A (en) * | 2015-03-03 | 2015-06-10 | 江西飞尚科技有限公司 | Ribbon cable detection method for magnetic flux of open loop magnetic flux sensor |
| CN104807585A (en) * | 2015-05-13 | 2015-07-29 | 上海同磊土木工程技术有限公司 | High-precision cable force testing instrument of magnetic permeability cable and test method thereof |
| CN108489641B (en) * | 2018-03-20 | 2020-06-02 | 重庆交通大学 | Stress measuring device and method for prestressed steel strand |
| CN108489641A (en) * | 2018-03-20 | 2018-09-04 | 重庆交通大学 | A kind of prestress wire stress measurement device and method |
| CN109100071A (en) * | 2018-08-24 | 2018-12-28 | 华中科技大学 | Parallel wire stay cable force detecting device |
| CN109100071B (en) * | 2018-08-24 | 2023-12-19 | 华中科技大学 | Parallel steel wire inhaul cable force detection device |
| KR20200042707A (en) * | 2018-10-16 | 2020-04-24 | 한국건설기술연구원 | Multi-measurement apparatus capable of simultaneously measuring tensile and sectional damage for a tendon |
| KR102122092B1 (en) | 2018-10-16 | 2020-06-11 | 한국건설기술연구원 | Multi-measurement apparatus capable of simultaneously measuring tensile and sectional damage for a tendon |
| CN109269685A (en) * | 2018-10-21 | 2019-01-25 | 郑州大学 | A kind of concrete stress sensor and its application method |
| CN109269685B (en) * | 2018-10-21 | 2024-03-15 | 郑州大学 | Concrete stress sensor and application method thereof |
| CN109596257A (en) * | 2018-11-15 | 2019-04-09 | 交通运输部公路科学研究所 | A kind of lossless in-situ measurement device of power and method |
| CN109596257B (en) * | 2018-11-15 | 2024-03-08 | 交通运输部公路科学研究所 | Force nondestructive in-situ measurement device and method |
| CN111830445A (en) * | 2020-07-24 | 2020-10-27 | 郑州大学 | Flexible magnetic flux sensor and manufacturing and mounting method thereof |
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