CN205958151U - Immersed tube tunnel PC cable measuring stress device - Google Patents
Immersed tube tunnel PC cable measuring stress device Download PDFInfo
- Publication number
- CN205958151U CN205958151U CN201620748555.9U CN201620748555U CN205958151U CN 205958151 U CN205958151 U CN 205958151U CN 201620748555 U CN201620748555 U CN 201620748555U CN 205958151 U CN205958151 U CN 205958151U
- Authority
- CN
- China
- Prior art keywords
- coil
- drag
- immersed tube
- line
- tube tunnel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model provides an immersed tube tunnel PC cable measuring stress device, including monitoring element and magnetic flux data acquisition instrument, its characterized in that, monitoring element comprises coil skeleton, induction coil, exciting coil, and induction coil twines on coil skeleton, and exciting coil twines on coil skeleton, and coil skeleton aligns and registrates on the cable wire of the PC cable that the quilt was monitored, and induction coil and exciting coil connect magnetic flux coil skeleton 1 through the heart yearn respectively. The utility model discloses directly bury monitoring element underground on the PC cable, do not need additionally to increase PC cable length, and monitoring element possesses removable condition.
Description
Technical field
The utility model belongs to civil engineering structure safety monitoring field, is related to a kind of immersed tube tunnel PC drag-line stress monitoring
Device.
Background technology
For preventing joints of segment position from opening after the docking of immersed tube tunnel tube coupling, using PC drag-line, two adjacent tube couplings are drawn
Tightly.PC drag-line is prestressing force multi beam steel strand wires, first a part is embedded in tube coupling inside concrete, in tube coupling pair in work progress
By both sides PC cable pull after connecing.Domestic immersed tube tunnel PC drag-line stress routine monitoring method is in tube coupling prefabrication process at present
Bury steel wire anchorage cable stressometer in PC stay cable end, monitor PC drag-line stress after the docking of PC drag-line, for example
Drag-line prestressed monitoring method disclosed in CN104535234A.The method need to increase PC guy cable length, and is prefabricated in tube coupling
During be embedded in PC drag-line termination, in tube coupling prefabrication process and PC cable tension during monitoring element be easily damaged, and
Monitoring element is non-exchange.
The utility model mainly solves PC drag-line stress monitoring method and monitoring dress under the conditions of not increasing PC guy cable length
Put the technical problem possessing replaceable condition.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of immersed tube tunnel PC drag-line stress monitoring
Device.
The technology path that the utility model is adopted is：After tube coupling docking, before PC cable tension, using open loop type magnetic flux
Dimension rope stressometer, as monitoring element, monitoring element is directly wound on cable wire, and monitoring element can stretch according to PC drag-line
Magnetic flux change reaction cable wire STRESS VARIATION during change, monitoring element connects magnetic flux data collecting instrument, and achievable PC drag-line should
The automatic monitoring of power.
The utility model solves technical problem and be employed technical scheme comprise that：
A kind of immersed tube tunnel PC drag-line monitor for stress, including monitoring element and magnetic flux data collecting instrument, its feature
It is, described monitoring element is made up of coil rack, induction coil, excitation coil, induction coil is wrapped on coil rack, swash
Encourage coil to be wrapped on coil rack, coil rack alignment be linked on the monitored cable wire of PC drag-line, induction coil and swash
Encourage coil and respectively magnetic flux data collecting instrument is connected by heart yearn.
As optimal technical scheme, the stage casing of coil rack opens up groove, and induction coil is wrapped in groove.Coil rack
It is provided with the groove passing to coil rack end from groove.
As optimal technical scheme, from excitation coil and induction coil four heart yearns out reserve a part fold prick to
On cable wire.So during PC cable tension, heart yearn invar rope will not rotate and twist disconnected.
As optimal technical scheme, four heart yearn joint solderings simultaneously with insulating cement parcel, by the heart yearn having connected with gluing
To empire cloth, four heart yearns are just bumped in the groove outside coil rack when not shelling disconnected.
As optimal technical scheme, induction coil is enclosed with insulating paper, and excitation coil is enclosed with empire cloth.
As optimal technical scheme, the periphery setting pillar of excitation coil and induction coil, excitation line is protected using pillar
Circle and induction coil.
As optimal technical scheme, also include buckle-type separated time protection device, buckle-type separated time protection device separates PC and draws
Each cable wire of rope, buckle-type separated time protection device also acts as the effect supporting tester.Described buckle-type separated time protection dress
Put and support together with lower support assembled by upper, upper support forms, and lower support between, the through hole that the cable wire for PC drag-line passes through,
Upper support is fixed by lock-screw and lower support between, plays instrument and fixes and protection of instrumentation effect during PC cable tension.
The utility model adopts PC drag-line stress monitoring element, after the docking of tube coupling sinking, directly exists before PC cable tension
Bury monitoring element on PC drag-line it is not necessary to additionally increase PC guy cable length, and monitoring element possesses replaceable condition.
Brief description
Fig. 1 is that sectional drawing is buried in PC drag-line monitoring point.
Fig. 2 is the 1-1 profile of Fig. 1.
Fig. 3 is monitoring element structural map.
Fig. 4 is protection device structural map.
Specific embodiment
It is further elucidated with the utility model with preferred embodiment below in conjunction with the accompanying drawings.
A kind of immersed tube tunnel PC drag-line stress monitoring method it is characterised in that tube coupling docking after, before PC cable tension,
Using open loop type magnetic flux cable wire stressometer as monitoring element, monitoring element is directly wound on cable wire, monitoring element can
According to magnetic flux change reaction cable wire STRESS VARIATION during PC drag-line telescopic variation, monitoring element connects magnetic flux data collecting instrument,
The automatic monitoring of achievable PC drag-line stress.
Specifically, described monitoring element is made up of coil rack, induction coil, excitation coil, and induction coil is wrapped in
On coil rack, excitation coil is wrapped on coil rack.Coil rack alignment is linked on the monitored cable wire of PC drag-line,
Induction coil and excitation coil connect magnetic flux data collecting instrument by heart yearn respectively, gather sense by magnetic flux data collecting instrument
Answer the information of coil and excitation coil, cable wire STRESS VARIATION is reacted according to magnetic flux change.
Preferably, the stage casing of coil rack opens up groove, induction coil is wrapped in groove.Coil rack is provided with from recessed
Groove passes to the groove of coil rack end.From excitation coil and induction coil four heart yearns out reserve a part fold prick to
On cable wire.So during PC cable tension, heart yearn invar rope will not rotate and twist disconnected.Four heart yearn joint solderings are simultaneously
With insulating cement parcel, by the heart yearn having connected with being glued on empire cloth, four heart yearns are just bumped into outside coil rack when not shelling disconnected
In the groove in portion.Induction coil is enclosed with insulating paper, and excitation coil is enclosed with empire cloth.Excitation coil and sense are protected using pillar
Answer coil.
Further, also include buckle-type separated time protection device, buckle-type separated time protection device is supported and lower by upper
Support fits together, upper support and lower support between form the through hole that passes through of cable wire for PC drag-line, upper support and lower support it
Between fixed by lock-screw, play that instrument is fixing and protection of instrumentation effect during PC cable tension.
Embodiment 1
See figures.1.and.2, after tube coupling docking, before PC drag-line 1 tensioning, layout type such as Fig. 1 of immersed tube tunnel PC drag-line
Shown.Immersed tube tunnel PC drag-line monitor for stress makes and monitoring step is as follows：
The first step：Buckle-type separated time protection device is installed
Select monitored cable wire, buckle-type separated time protection device is locked on this monitored cable wire, two buttons of adjustment
Between formula separated time protection device, distance is to meet the installing space of monitoring element.Shown buckle-type separated time protection device such as Fig. 4 institute
Show, fitted together by upper support 31 and lower support 32, the cable wire being formed for PC drag-line between upper support 31 and lower support 32 is worn
The through hole crossed, upper support 31 and lower support are fixed by lock-screw 33 between 32.Described lower support in 32 opens up inverted T shape groove,
The centre of inverted T shape groove opens up half slot, and upper support 31 and inverted T shape groove coordinate, and the upper lower surface supporting 31 opens up half slot, upper
The through hole that the half slot composition of the half slot of support 31 and lower support 32 passes through for cable wire, the described lower side supporting 32 opens up locking
After screw installation position, described upper support 31 and lower support 32 assembling, profile is in cylinder.
Second step：Coil rack is installed
Distance between two buttons separated time protection device (bearing head) is adjusted to suitable, a pair of coil rack 23 is alignd
It is linked on monitored cable wire, be coated with glue fixing seal at gap.
3rd step：Coiling induction coil (with reference to Fig. 3)
1) use a head in coil rack 23 of fine enamelled wire (0.17mm) around 8cm about long reserved line.
2) coil rack 23 offers the groove of coiling induction coil, and is provided with the ditch passing to coil rack end from groove
Groove, fine enamelled wire is caused groove coiling (fixation of taping) from groove, and from head around afterbody, more heavy-tailed portion is around head,
Be considered as one touring, need touring around two it is desirable to the adjacent circle of a circle, around number of turns foot between line closely.
3) touring around complete two, fine enamelled wire is drawn to reserve around 10cm to coil rack head along same groove and cuts after line
Disconnected (adhesive tape is fixed).
4) fine enamelled wire at induction coil is coated with insulated paint, thereafter parcel insulating paper (adhesive tape fixed insulation paper).
Note：Because coil rack 23 needs to rotate when coiling, so enamel-covered wire needs for port to be wound on coil rack
Head is with the disconnected enamel-covered wire of anti-rotation.
4th step：Coiling excitation coil (with reference to Fig. 3)
1) with a head in coil rack 23 of thick enamel-covered wire (0.47mm) around 8cm about long reserved line.
2) thick enamel-covered wire is drawn to excitation coil coiling from head around afterbody from that ditch grain that fine enamelled wire enters,
Afterwards from afterbody around head, again from head around afterbody, finally directly from afterbody roll over can head (fixation of taping), altogether three
Great circle is it is desirable to a circle adjacent encloses, tightly around the number of turns is sufficient between line.
3), after turning back, roughly enamel-covered wire is caused coil rack head from the ditch grain entered and cuts off after the reserved line of 10cm
(adhesive tape is fixed).
4) thick enamel-covered wire at excitation coil is coated with insulated paint, thereafter parcel empire cloth (adhesive tape fixed insulation cloth).
5th step：Wiring tests whether that coiling data is normal.
1) 4 heart yearns 20 (red-black green Bai Sise) preparing one 1 meter long strip two ends.
2) four enamel-covered wires being wound on skeleton head are taken off, 4 the end of a thread paints are scraped 1cm length.
3) survey whether the enamel-covered wire after paint is scraped turns on universal meter.
4) (8cm fine enamelled wire connects white 10cm fine enamelled wire and connects green, 8cm after conduction, four enamel-covered wires to be connected four heart yearns
Thick enamel-covered wire connect the thick enamel-covered wire of black 10cm connect red), connected to magnetic flux data collecting instrument, integral voltage data by four heart yearns
Lower step can be carried out 0.38 to 0.6 otherwise to recoil.
5) by joint soldering and with insulating cement parcel, the line having connected is required four heart yearns not with being glued on empire cloth
In the disconnected recessed grain being just bumped into outside coil rack of stripping.
6th step：Encapsulating
1) place 20 minutes after two kinds of resins (polyamide, epoxy resin) being stirred evenly in 0.9 to 1 ratio mediation.
2) glue mixing up uniformly is applied to two and half to cut open inside pillar 21.
3) applied glue two and half are cutd open pillar 21 it is combined in coil rack and just cover empire cloth, tightened with two bands.
4) four heart yearns 20 out from excitation coil 22 and induction coil 24 are reserved a part and fold bundle to cable wire.
Note：Want moment gathered data in encapsulating, in case data problem occurs, remedy in time.
7th step：Stablize data before collection tensioning
1) etc. it is gelled after one day solid, five groups stable of data of collection magnetic flux.
2) four heart yearns 20 are arranged tensioning sleeve internal to built-in pipe.
8th step：Stablize data after collection tensioning.
1) stablize five groups of data after collection tensioning.
2) demarcate specific test parameter.
9th step：Real-time monitoring
According to the parameter demarcated, by magnetic flux data collecting instrument, the real-time stress change of automatic data collection cable wire.
Content describes embodiment of the present utility model (Nanchang City's red paddy Tunnel Engineering) above, but is not absolute limit
System, that is, in the case of without departing from the utility model scope and spirit, industry technical staff can be according to engineering practice
Optimize instrument method for embedding, the utility model can be made with various different modifications and variations, belong to the protection of this patent
Scope.
Claims (8)
1. a kind of immersed tube tunnel PC drag-line monitor for stress, including monitoring element and magnetic flux data collecting instrument, its feature exists
In described monitoring element is made up of coil rack, induction coil, excitation coil, and induction coil is wrapped on coil rack, excitation
Coil is wrapped on coil rack, and coil rack alignment is linked on the monitored cable wire of PC drag-line, induction coil and excitation
Coil connects magnetic flux data collecting instrument by heart yearn respectively.
2. immersed tube tunnel PC drag-line monitor for stress according to claim 1 is it is characterised in that the stage casing of coil rack
Open up groove, induction coil is wrapped in groove, coil rack is provided with the groove passing to coil rack end from groove.
3. immersed tube tunnel PC drag-line monitor for stress according to claim 1 is it is characterised in that from excitation coil and sense
Answer coil four heart yearns out to reserve a part and fold bundle to cable wire.
4. immersed tube tunnel PC drag-line monitor for stress according to claim 1 is it is characterised in that four heart yearn joints
Soldering is simultaneously wrapped up, by the heart yearn having connected with being glued on empire cloth with insulating cement.
5. immersed tube tunnel PC drag-line monitor for stress according to claim 1 it is characterised in that four heart yearns do not shell disconnected
When be just bumped in the groove outside coil rack.
6. immersed tube tunnel PC drag-line monitor for stress according to claim 1 is it is characterised in that induction coil is enclosed with
Insulating paper, excitation coil is enclosed with empire cloth.
7. immersed tube tunnel PC drag-line monitor for stress according to claim 1 is it is characterised in that excitation coil and sensing
The periphery setting pillar of coil.
8. immersed tube tunnel PC drag-line monitor for stress according to claim 1 divides it is characterised in that also including buckle-type
Line protection device, buckle-type separated time protection device separates each cable wire of PC drag-line, and buckle-type separated time protection device also acts as props up
Support tester effect, described buckle-type separated time protection device by upper support together with lower support assembled, upper support and under
Form, between support, the through hole that the cable wire for PC drag-line passes through, fixed by lock-screw between upper support and lower support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748555.9U CN205958151U (en) | 2016-07-15 | 2016-07-15 | Immersed tube tunnel PC cable measuring stress device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748555.9U CN205958151U (en) | 2016-07-15 | 2016-07-15 | Immersed tube tunnel PC cable measuring stress device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205958151U true CN205958151U (en) | 2017-02-15 |
Family
ID=57971832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620748555.9U Expired - Fee Related CN205958151U (en) | 2016-07-15 | 2016-07-15 | Immersed tube tunnel PC cable measuring stress device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205958151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197765A (en) * | 2016-07-15 | 2016-12-07 | 中铁隧道集团二处有限公司 | A kind of immersed tube tunnel PC drag-line stress monitoring method and device |
| CN109683114A (en) * | 2019-01-31 | 2019-04-26 | 广西大学 | A kind of assembling electromagnetic sensor measuring system |
-
2016
- 2016-07-15 CN CN201620748555.9U patent/CN205958151U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197765A (en) * | 2016-07-15 | 2016-12-07 | 中铁隧道集团二处有限公司 | A kind of immersed tube tunnel PC drag-line stress monitoring method and device |
| CN106197765B (en) * | 2016-07-15 | 2019-03-29 | 中铁隧道集团二处有限公司 | A kind of immersed tube tunnel PC drag-line stress monitoring method |
| CN109683114A (en) * | 2019-01-31 | 2019-04-26 | 广西大学 | A kind of assembling electromagnetic sensor measuring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205958151U (en) | Immersed tube tunnel PC cable measuring stress device | |
| US8708559B2 (en) | Pile sensing device and method of using the same | |
| CN106197765B (en) | A kind of immersed tube tunnel PC drag-line stress monitoring method | |
| CN110184930A (en) | The stayed Cable Construction method of low-pylon cable-stayed bridge | |
| CN101936726B (en) | Waterproof anti-sticking portable probe of sliding inclinometer | |
| CN102936903A (en) | Method for detecting test pile stress and strain of PHC (Prestressed High-Strength Concrete) pipe pile | |
| CN109030561A (en) | A kind of pumping of prostressed duct compactness detection device and detection method based on distributed fiberoptic sensor | |
| CN102347596A (en) | Method for tensioning and stringing eight split conductors as well as installing accessories | |
| CN108150209A (en) | A kind of intelligent anchor rod for being suitable for protecting and measuring Tunnel Stability | |
| CN108414130A (en) | Force measuring device is drawn in cable laying | |
| CN205858322U (en) | A kind of split type inclinometer of adjustable tread | |
| CN205932766U (en) | Developments submarine cable receive and releases iron disc | |
| CN217930377U (en) | Health monitoring system of prestressed concrete lining structure | |
| US9359833B2 (en) | Method for installing multiple fiber optic cables in coiled tubing | |
| CN112160639A (en) | Telegraph pole and production process thereof | |
| CA2900016C (en) | Method for installing multiple sensors in coiled tubing | |
| CN213274634U (en) | Protection device for optical fiber temperature measurement sensor of unit stator | |
| CN109113413A (en) | A kind of more electric pole compound formulations and mechanism with inclination monitoring | |
| CN212621853U (en) | Cable head connecting device for submarine cable tension bending test | |
| CN208206362U (en) | Force measuring device is drawn in cable laying | |
| CN203924490U (en) | A kind of finished product steel wire bundle | |
| CN209384373U (en) | Reinforcing pull rod | |
| CN113341470A (en) | Detachable and foldable transient electromagnetic transceiving coil | |
| CN104634269A (en) | Device and method for utilizing fiber bragg grating displacement sensor to measure axial deformation of bedrock | |
| US6825412B1 (en) | Locator wire terminator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20190715 |