CN106441686A - Intelligent stay cable with cable force measuring structure and method thereof for achieving cable force measurement - Google Patents
Intelligent stay cable with cable force measuring structure and method thereof for achieving cable force measurement Download PDFInfo
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- CN106441686A CN106441686A CN201611129974.5A CN201611129974A CN106441686A CN 106441686 A CN106441686 A CN 106441686A CN 201611129974 A CN201611129974 A CN 201611129974A CN 106441686 A CN106441686 A CN 106441686A
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- cable
- cable force
- force measurement
- measurement sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
- G01L5/103—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means using sensors fixed at one end of the flexible member
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Bridges Or Land Bridges (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses an intelligent stay cable with a cable force measuring structure. The intelligent stay cable comprises a stay cable body, anchor heads, a connecting cylinder, a sealing cylinder and a cable force measuring structure, wherein the anchor heads are positioned at two ends of the stay cable body; the connecting cylinder and the sealing cylinder are sequentially connected with the anchor heads; the cable force measuring structure comprises a cable force measurement sensor which is cured inside an anchor head at one end by using a chill cast material, and an external testing instrument for data acquisition processing; the cable force measuring sensor is connected with the external tester through a high temperature resistant data transmission line penetrating through an anchor plate; the cable force measuring sensor is a vibration wire type strain gauge or an another type of stress sensor, and is bundled with a steel wire of the stay cable body. As a part of the stay cable structure, the cable force measurement sensor of the intelligent stay cable is buried inside the anchor heads of the stay cable, and forms a uniform structure with the stay cable through a curing material, so that the strain and the temperate of an anchor can be monitored in the stay cable construction process and measured in a later service period in real time, and furthermore the cable force can be measured; the intelligent stay cable is novel in structure, convenient to mount and high in measurement precision.
Description
Technical field
The present invention relates to a kind of method of smart stay cable and drag-line cable force measurement, particularly a kind of with cable force measurement structure
Smart stay cable and its method realizing drag-line cable force measurement.
Background technology
Drag-line is one of important component of the rope class bridge such as arch bridge, cable-stayed bridge, suspension bridge, as important primary structure member,
To bridge, integrally-built safety plays extremely important effect to its force-bearing situation.The working condition of drag-line is whether bridge is in
One of important symbol of safe condition.The Suo Li of drag-line is understood in time during the work progress that bridge cable is installed and operation
Situation is necessary.Significant therefore, it is possible to accurate measurement Cable force value.
Measurement cable body Suo Li main method has the methods such as frequency of vibration method, magnetoelasticity method, pressure sensing method at present.
Frequency of vibration method is theoretical based on Chord vibration：There is simple relation between Suo Lali and the natural frequency of vibration, therefore may be used
So that Suo Li is calculated by the natural frequency of vibration recording.But the sag of drag-line and bending rigidity are not taken into account by this method,
Error is larger in actual applications.
The mensuration conductance based on cable body of magnetic flux and Suo Liyou relation.This kind of method applicability is strong, long-acting superior performance, is suitable for
Work progress, operation phase long-acting monitoring, and bridge and the military service stage long-acting monitoring of space cable net structure later stage.But due to magnetic
Flux sensor and its measuring apparatus magnetic bullet instrument are expensive, and its economy is poor.
Publication number CN 202401395 U utility model patent, discloses " Intelligent cable rope for bridge ", this cable passes through
Built-in fiber grating sensor, measures rope force value suffered by cable by the wavelength change measuring fiber-optic grating sensor, but, by
Fixed using low-temperature bonding mode with steel wire in fiber-optic grating sensor, therefore, technology implementation difficulty is big；Fiber-optic grating sensor
Signal transmssion line is optical cable, easily damaged, and protection difficulty is big；And sensor itself receive temperature impact larger, certainty of measurement is relatively low；
, by the way of embedded steel tube, impact cable body is attractive in appearance, and can affect the antiseptic property of cable body for the lead-out mode of holding wire.
Content of the invention
It is an object of the invention to：For the deficiencies in the prior art, provide a kind of smart stay cable with cable force measurement structure
And its method realizing drag-line cable force measurement, cable force measurement sensor as a part for stayed structure, buries by this smart stay cable
It is located inside steel for wire drawing, unified structure is formed by curing materials and drag-line, both can be in the monitoring of drag-line work progress, also may be used
Anchorage internal strain and temperature are measured in real time with the military service stage in later stage, and then measures Suo Li；Its stayed structure is novel, easy for installation,
Certainty of measurement is high, to solve the problems referred to above of prior art presence.
The technical scheme solving the above problems is：A kind of smart stay cable with cable force measurement structure, including drag-line cable body, position
The connecting cylinder being sequentially connected with anchor head in the anchor head at drag-line cable body two ends and sealing drum, this drag-line also carries a cable force measurement knot
Structure, described cable force measurement structure includes by the cable force measurement sensor within the solidification of chill casting material at one end anchor head and enters line number
According to the external testing instrument of acquisition process, this cable force measurement sensor passes through anchor slab to survey with outside by high temperature resistant data line
Test instrument connects.
A kind of further technical scheme of described smart stay cable with cable force measurement structure is：Described cable force measurement sensing
Device passes through thin wire together with the wire binding of drag-line cable body.
The termination at the described anchor head end with cable force measurement sensor also has one piece of cover plate, and high temperature resistant data line passes through
Draw at cover plate.
Described cable force measurement sensor is vibrating string extensometer or fiber grating strain meter or other kinds of stress passes
Sensor.
Related another technical scheme is：The above-mentioned smart stay cable with cable force measurement structure realizes the side of drag-line cable force measurement
Method, it is to be arranged in steel for wire drawing the cable force measurement sensor of cable force measurement structure as a part for stayed structure, and
Completed the tensioning staking-out work of cable force measurement sensor before drag-line uses, before cable tension construction, then by cable force measurement
Sensor is connected with external testing instrument through anchor slab by high temperature resistant data line；Realize in cable tension construction period and
Later stage service phase directly measures to Cable power.
Realize comprising the concrete steps that of described Cable force measuring method：
A, the cable force measurement sensor of pre-buried cable force measurement structure:
Cable force measurement sensor is fixed on the steel wire of drag-line cable body by thin wire, then pours chill casting material and solidified,
Cable force measurement sensor is passed through the solidification of chill casting material be embedded in the anchor head of drag-line；
B, cable force measurement transducer calibration:
After solidification work completes, carry out grading tension during ultra stretching before drag-line dispatches from the factory, complete to cable force measurement sensor
Staking-out work；Draw the frequency values of standard cable force measurement sensor and the corresponding relation formula of Cable force value；
Formula one
In above-mentioned formula one：
Y is Cable power,
,
；Formula two
In above-mentioned formula two：
F is cable force measurement sensor real-time frequency, unit：Hz；
R0For initial reading；
G0For typical coefficient；
C, installation external testing instrument：
Before cable tension construction, cable force measurement sensor is passed through anchor slab and external tester by high temperature resistant data line
Device connects；
D, as needed setting program, are measured in real time to Cable power.
Due to adopting said structure, the smart stay cable with cable force measurement structure of the present invention and its realize drag-line cable force measurement
Method have the characteristics that and beneficial effect：
1st, both can enter in the monitoring of drag-line work progress, stage measurement anchorage internal strain and temperature in real time of can also being on active service in the later stage
And measure Suo Li；Measurement is convenient, high precision：
Cable force measurement sensor as a part for stayed structure, is being drawn by the smart stay cable with cable force measurement structure of the present invention
Using before, tensioning staking-out work completes rope, directly can apply in cable tension construction and later stage service phase.
2nd, stayed structure is novel, easy for installation, firm：
1. cable force measurement sensor is embedded in steel for wire drawing the smart stay cable with cable force measurement structure of the present invention
Portion；Form unified structure by curing materials with drag-line, termination also has one piece of cover plate, by drawing cable at cover plate, do not affect
Cable body original structure, the outward appearance thus without impact cable body and antiseptic property.
2. sensor is not easily susceptible to extraneous collision and damages, sturdy construction.
3rd, it is easy to unified monitoring management：
The cable force measurement sensor of the smart stay cable with cable force measurement structure of the present invention is connected with multi-Channels Data Acquisition, can
To monitor many drag-lines simultaneously.
Below, in conjunction with accompanying drawing and embodiment to a kind of smart stay cable with cable force measurement structure of the present invention and its realization
The technical characteristic further instruction of the method for drag-line cable force measurement.
Brief description
Fig. 1 is the overall structure diagram of the smart stay cable with cable force measurement structure；
Fig. 2 is the corresponding relation curve chart with Cable force value for the frequency values of standard cable force measurement sensor.
In figure：
1- cover plate, 2- bolt, 3- cable force measurement sensor, 4- is high temperature resistant data line, 5- carries cable force measurement sensor side anchor
Head,
6- anchor slab, 7- chill casting material, 8- nut, 9- connecting cylinder, 10- sealing drum, 11- constraint circle, 12- drag-line steel wire.
Specific embodiment
Embodiment one：
A kind of smart stay cable with cable force measurement structure：
As shown in figure 1, this smart stay cable with cable force measurement structure includes drag-line cable body 12, is located at the anchor at drag-line cable body 12 two ends
Connecting cylinder 9 and sealing drum 10 and cable force measurement structure that head is sequentially connected with anchor head, described cable force measurement structure includes passing through
Chill casting material 7 solidifies the cable force measurement sensor 3 within anchor head and the external testing instrument carrying out data acquisition process at one end
13, this cable force measurement sensor 3 is connected with external testing instrument 13 through anchor slab 6 by high temperature resistant data line 4.
Described cable force measurement sensor 3 is vibrating string extensometer, is existed by the wire binding of thin wire and drag-line cable body 12
Together.
The termination at the described anchor head end with cable force measurement sensor 3 also has one piece of cover plate 1, high temperature resistant data line 4
By drawing at cover plate 1；Described chill casting material 7 can also be other low-temperature setting material.
As one kind conversion of the embodiment of the present invention, described cable force measurement sensor 3 can also be other kinds of stress
Sensor such as fiber grating strain meter, installation method is identical with vibrating string extensometer.
Embodiment two
A kind of Cable force measuring method.
It is the method that the smart stay cable with cable force measurement structure described in embodiment one realizes drag-line cable force measurement, it be by
The cable force measurement sensor 3 of cable force measurement structure is arranged in steel for wire drawing as a part for stayed structure, and makes in drag-line
With completing the tensioning staking-out work of cable force measurement sensor 3 before, before cable tension construction, then by cable force measurement sensor 3
It is connected with external testing instrument 13 through anchor slab 6 by high temperature resistant data line 4；Realize cable tension construction period and after
Phase service phase directly measures to Cable power.
The described smart stay cable with cable force measurement structure realizes comprising the concrete steps that of the method for drag-line cable force measurement：
A, the cable force measurement sensor of pre-buried cable force measurement structure:
Cable force measurement sensor 3 is fixed on the steel wire of drag-line cable body by thin wire, then pours chill casting material and solidified,
Cable force measurement sensor 3 is passed through chill casting material 7 solidification be embedded in the anchor head of drag-line；
B, cable force measurement sensor 3 are demarcated:
After solidification work completes, carry out grading tension during ultra stretching before drag-line dispatches from the factory, complete to cable force measurement sensor 3
Staking-out work is (referring to subordinate list one：The frequency values of standard force-measuring sensor and the corresponding relation of Cable force value)；Show that standard is surveyed
The corresponding relation formula of the frequency values of force transducer and Cable force value and curve (referring to Figure of description Fig. 2)；
The computing formula of this curve is：Formula one
In above-mentioned formula one：
Y is Cable power,
,
；Formula two
In above-mentioned formula two：
F is sensor real-time frequency, unit：Hz；
R0For initial reading；
G0For typical coefficient.
C, installation external testing instrument：
Before cable tension construction, cable force measurement sensor 3 is passed through anchor slab 6 to survey with outside by high temperature resistant data line 4
Test instrument 13 connects；
D, Cable power measure：
In measurement process, 2 know the big probable value of Cable power with reference to the accompanying drawings, calculate Cable using formula one, formula two
The exact value of power.
In said method, described cable force measurement sensor 3 is vibrating string extensometer, by thin wire and drag-line cable body 12
Wire binding is together.
Described chill casting material 7 can also be other low-temperature setting material.
As one kind conversion of the embodiment of the present invention, described cable force measurement sensor 3 can also be other kinds of sensing
Device, for example：Fiber grating strain meter, its fixed form is constant；I.e.：Fiber grating strain meter is passed through thin wire and drag-line cable body
12 wire binding is together.
Subordinate list one：The frequency values of standard force-measuring sensor and the corresponding relation of Cable force value
Claims (6)
1. a kind of smart stay cable with cable force measurement structure, including drag-line cable body（12）, be located at drag-line cable body（12）The anchor at two ends
The connecting cylinder that head is sequentially connected with anchor head（9）And sealing drum（10）It is characterised in that：This drag-line also carries a cable force measurement knot
Structure, described cable force measurement structure is included by chill casting material（7）The solidification cable force measurement sensor within anchor head at one end（3）And
Carry out the external testing instrument of data acquisition process（13）, this cable force measurement sensor（3）By high temperature resistant data line（4）
Through anchor slab（6）With external testing instrument（13）Connect.
2. a kind of smart stay cable with cable force measurement structure according to claim 1 it is characterised in that：Described cable force measurement
Sensor（3）By thin wire and drag-line cable body（12）Wire binding together.
3. a kind of smart stay cable with cable force measurement structure according to claim 1 and 2 it is characterised in that：Described carry
Cable force measurement sensor（3）The termination at anchor head end also have one piece of cover plate, high temperature resistant data line（4）Draw by cover plate
Go out.
4. a kind of smart stay cable with cable force measurement structure according to claim 1 and 2 it is characterised in that：Described Suo Li
Measurement sensor（3）It is vibrating string extensometer or fiber grating strain meter or other kinds of strain gauge.
5. a kind of Cable force measuring method it is characterised in that：It is that described in claim 1, the intelligence with cable force measurement structure is drawn
The method of Suo Shixian drag-line cable force measurement, it is by the cable force measurement sensor of cable force measurement structure（3）As stayed structure
A part is arranged in steel for wire drawing, and completes cable force measurement sensor before drag-line uses（3）Tensioning staking-out work,
Before cable tension construction, then by cable force measurement sensor（3）By high temperature resistant data line（4）Through anchor slab（6）With outside
Test instrunment（13）Connect；Realize directly Cable power being measured in cable tension construction period and later stage service phase.
6. Cable force measuring method according to claim 5 it is characterised in that：Realize described Cable force measuring method
Comprise the concrete steps that：
A, the cable force measurement sensor of pre-buried cable force measurement structure:
By cable force measurement sensor（3）It is fixed on the steel wire of drag-line cable body by thin wire, then pour chill casting material and carry out admittedly
Change, by cable force measurement sensor（3）By chill casting material（7）Solidification is embedded in the anchor head of drag-line；
B, cable force measurement sensor（3）Demarcate:
After solidification work completes, carry out grading tension during ultra stretching before drag-line dispatches from the factory, complete to cable force measurement sensor
（3）Staking-out work；Draw the frequency values of standard cable force measurement sensor and the corresponding relation formula of Cable force value；
Formula one
In above-mentioned formula one：
Y is Cable power,
,
；Formula two
In above-mentioned formula two
F is cable force measurement sensor real-time frequency, unit：Hz；
R0For initial reading；
G0For typical coefficient；
C, installation external testing instrument：
Before cable tension construction, by cable force measurement sensor（3）By high temperature resistant data line（4）Through anchor slab（6）With
External testing instrument（13）Connect；
D, as needed setting program, are measured in real time to Cable power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129974.5A CN106441686A (en) | 2016-12-09 | 2016-12-09 | Intelligent stay cable with cable force measuring structure and method thereof for achieving cable force measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129974.5A CN106441686A (en) | 2016-12-09 | 2016-12-09 | Intelligent stay cable with cable force measuring structure and method thereof for achieving cable force measurement |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267255A (en) * | 2018-02-09 | 2018-07-10 | 华南理工大学建筑设计研究院 | A kind of round-the-clock cable force measurement device and measuring method |
| CN109115331A (en) * | 2018-09-30 | 2019-01-01 | 柳州欧维姆机械股份有限公司 | A kind of acceleration transducer is built in the vibration signal acquisition system of drag-line |
| CN109457614A (en) * | 2018-09-30 | 2019-03-12 | 柳州欧维姆结构检测技术有限公司 | Parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitors system and construction method |
| CN110702022A (en) * | 2019-09-16 | 2020-01-17 | 江苏卓然智能重工有限公司 | Method for implanting FBG (fiber Bragg Grating) sensor in fatigue monitoring of large tower crane cable |
| CN110864841A (en) * | 2019-10-28 | 2020-03-06 | 广西大学 | Parallel steel wire intelligent cable of spot welding sensor and sensor mounting method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108267255A (en) * | 2018-02-09 | 2018-07-10 | 华南理工大学建筑设计研究院 | A kind of round-the-clock cable force measurement device and measuring method |
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| CN109457614A (en) * | 2018-09-30 | 2019-03-12 | 柳州欧维姆结构检测技术有限公司 | Parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitors system and construction method |
| CN110702022A (en) * | 2019-09-16 | 2020-01-17 | 江苏卓然智能重工有限公司 | Method for implanting FBG (fiber Bragg Grating) sensor in fatigue monitoring of large tower crane cable |
| CN110864841A (en) * | 2019-10-28 | 2020-03-06 | 广西大学 | Parallel steel wire intelligent cable of spot welding sensor and sensor mounting method |
| CN110864841B (en) * | 2019-10-28 | 2022-05-31 | 广西大学 | Parallel steel wire intelligent cable of spot welding sensor and sensor mounting method |
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