CN206233273U - A kind of pile for prestressed pipe Internal forces test device for being implanted into steel bar stress - Google Patents
A kind of pile for prestressed pipe Internal forces test device for being implanted into steel bar stress Download PDFInfo
- Publication number
- CN206233273U CN206233273U CN201620273228.2U CN201620273228U CN206233273U CN 206233273 U CN206233273 U CN 206233273U CN 201620273228 U CN201620273228 U CN 201620273228U CN 206233273 U CN206233273 U CN 206233273U
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- CN
- China
- Prior art keywords
- pile
- steel bar
- optical fiber
- fluting
- prestressed pipe
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- Expired - Fee Related
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Abstract
A kind of pile for prestressed pipe Internal forces test device for being implanted into steel bar stress of the utility model, belong to pile foundation engineering field, agent structure includes pile for prestressed pipe, steel bar stress, fluting, epoxy resin, lumen center fixing device, optical fiber, armored optical cable, fiber grating data (FBG) demodulator, computer；It is characterized in that：Fluting is provided with stress steel, one layer of epoxy resin is provided with fluting, optical fiber is arranged in fluting, the fluting epoxy resin sealing, optical fiber is protected from steel bar stress Base top contact with armored optical cable, and armored optical cable is guided to fixed in the fixing device of official jargon center；Armored optical cable is connected with fiber grating data (FBG) demodulator；Fiber grating data (FBG) demodulator is connected with computer.The utility model is relative to prior art, the problem that pile for prestressed pipe Internal forces cannot be tested accurately is solved well, the test system improves the survival rate of optical fiber, optical fiber it is embedded simple, it is workable, there is provided a kind of new pile for prestressed pipe pile body deformation distributed measurement method, realize that efficiently, easily continuity is measured.
Description
Technical field
The utility model belongs to pile foundation engineering field, is related to a kind of high-strength prestressed concrete pipe pile Internal forces test to ask
Topic, specifically a kind of pile for prestressed pipe Internal forces test device for being implanted into steel bar stress.
Background technology
Main method one kind of high-strength prestressed concrete pipe pile Internal forces test is reinforcing rib meter method, and reinforcing rib meter is according to soil
Rotating fields are embedded in pile body cage bar, the ess-strain according to a certain section of pile body come detect pile body correspondence section internal force, remove
Strain beyond measuring point, the deformation between 2 points can only be by inferring.This method of testing principle is simple, it is easy to operate, but
This measurement to pile body deformation is main or point type is detected, measuring point is discontinuous, easy missing inspection, and reinforcing rib meter is in concreting
Easily impaired, it is impossible to normal work, fragmentary point data is difficult to reflect pile quality and stake and each point of stratum interlaminar action comprehensively
Rule, excessive wire influence pile body structure and bearing capacity.Another kind is measuring techniques for optical fiber, in whole testing length scope
It is interior, can follow-on test, inferred-zero drift, not charged work, anti-electromagnetic interference capability is strong, and optical fiber can be by pile with fluting
It is pre-buried, then to be closed with glue, this method causes necessarily to damage and stake Soil Interface frictional property after encapsulating to pile body elastic modelling quantity
Shape also has different with integrality, causes a Soil Interface coefficient of friction to change.Therefore one kind is developed relatively accurately to obtain
Pile for prestressed pipe Internal forces, relatively accurately calculate the distribution situation and end resistance size of pile for prestressed pipe pile side friction
Method turns into a very urgent job.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art and defect, proposes a kind of the pre- of implantation steel bar stress
Stress pile tube Internal forces test device, before pile for prestressed pipe making, is previously implanted optical fiber, by normal in steel bar stress
Production technology make pile for prestressed pipe.
To achieve these goals, a kind of pile for prestressed pipe Internal forces test dress for being implanted into steel bar stress of the utility model
Put, agent structure includes pile for prestressed pipe, steel bar stress, fluting, epoxy resin, lumen center fixing device, optical fiber, armouring light
Cable, fiber grating data (FBG) demodulator, computer；It is characterized in that：Slotted on stress steel, last layer asphalt mixtures modified by epoxy resin is first put in groove
Fat；Optical fiber is put on the epoxy resin in groove, then is slotted with epoxy resin sealing；Optical fiber from steel bar stress Base top contact, and
Protected with armored optical cable, armored optical cable is guided to fixed in the fixing device of official jargon center；Armored optical cable is demodulated with fiber grating data
Instrument is connected；Fiber grating data (FBG) demodulator is connected with computer.
The steel bar stress of described implantation optical fiber has root, and is equably laid in described pile for prestressed pipe；Fluting is deep
Degree 2mm, width 2mm；Optical fiber is drawn from the 20mm of steel bar stress top；Lumen center fixing device is right-angled intersection reinforcing bar, its
Principal rod with steel reinforcement cage is welded, and is anchored at after casting concrete in the concrete of pile tube inwall；In order to avoid drawing armouring
Optical cable causes stress concentration during piling, and lumen center fixing device is at stake top 1m positions.
Fiber grating data (FBG) demodulator itself high resolution, reproducible, picking rate is fast, reliability is high, treatment
Ability is strong, loss is small, transmission capacity is big, measurement range is wide.
The utility model has the advantage of：Relative to prior art, solve well pile for prestressed pipe Internal forces without
The problem of the accurate test of method, the test system improves the survival rate of optical fiber, optical fiber it is embedded simple, it is workable, there is provided
A kind of new pile for prestressed pipe pile body deformation distributed measurement method, realize efficiently, easily continuity measurement.
Brief description of the drawings
Fig. 1 is optical fiber of the present utility model in reinforcing bar inner structure principle schematic；
Fig. 2 is Epoxy Resin Reinforcement inner structure principle schematic of the present utility model；
Fig. 3 is related to reinforcing bar in pile for prestressed pipe inner structure principle schematic for the utility model；
The pile tube center fixture structure principle schematic that Fig. 4 is related to for the utility model.
1st, pile for prestressed pipe；2nd, steel bar stress；3rd, slot；4th, epoxy resin；5th, lumen center fixing device；6th, optical fiber；
7th, armored optical cable；8th, fiber grating data (FBG) demodulator；9th, computer.
Specific embodiment
The utility model is further described below in conjunction with the accompanying drawings：
As illustrated, a kind of pile for prestressed pipe Internal forces test device for being implanted into steel bar stress, agent structure includes pre-
Stress pile tube 1, steel bar stress 2, fluting 3, epoxy resin 4, lumen center fixing device 5, optical fiber 6, armored optical cable 7, optical fiber light
Grid data (FBG) demodulator 8, computer 9；It is characterized in that：Slot 3 on steel bar stress 2, last layer epoxy resin 4 is first put in groove；
On the epoxy resin 4 that optical fiber 6 is put into groove, then fluting 3 is closed with epoxy resin 4；Optical fiber 6 from the Base top contact of steel bar stress 2,
And protected with armored optical cable 7, armored optical cable 7 is guided to fixed in official jargon center fixing device 5；Armored optical cable 7 and fiber grating number
It is connected according to (FBG) demodulator 8；Fiber grating data (FBG) demodulator 8 is connected with computer.
The steel bar stress 2 of implantation optical fiber 6 described in the utility model has 4, and is equably laid in described prestressing force
In pile tube 1；Slot 3 depth 2mm, width 2mm；Optical fiber 6 is drawn from the top 20mm of steel bar stress 2；Lumen center fixing device 5
It is right-angled intersection reinforcing bar, it is welded with the principal rod of steel reinforcement cage, is anchored at after casting concrete in the concrete of pile tube inwall；
Cause stress concentration during piling in order to avoid drawing armored optical cable 7, lumen center fixing device 5 is apart from stake top 1m positions
Place.
Itself high resolution of fiber grating data (FBG) demodulator 8 described in the utility model, reproducible, picking rate be fast, can
By property it is high, disposal ability is strong, loss is small, transmission capacity is big, measurement range is wide.
Claims (2)
1. it is a kind of be implanted into steel bar stress pile for prestressed pipe Internal forces test device, agent structure include pile for prestressed pipe, receive
Power reinforcing bar, fluting, epoxy resin, lumen center fixing device, optical fiber, armored optical cable, fiber grating data (FBG) demodulator, computer；
It is characterized in that：Fluting is provided with stress steel, one layer of epoxy resin is provided with fluting, optical fiber is arranged in fluting, described to open
Groove epoxy resin sealing, optical fiber is protected from steel bar stress Base top contact with armored optical cable, and armored optical cable guides to official jargon center
It is fixed in fixing device；Armored optical cable is connected with fiber grating data (FBG) demodulator；Fiber grating data (FBG) demodulator is connected with computer.
2. a kind of pile for prestressed pipe Internal forces test device for being implanted into steel bar stress as claimed in claim 1, its feature exists
There is root in the steel bar stress of described implantation optical fiber, and be equably laid in described pile for prestressed pipe；Groove depth 2mm,
Width 2mm；Optical fiber is drawn from the 20mm of steel bar stress top；Lumen center fixing device is right-angled intersection reinforcing bar, itself and reinforcing bar
The principal rod welding of cage, is anchored in the concrete of pile tube inwall after casting concrete；Exist in order to avoid drawing armored optical cable
Cause stress concentration during piling, lumen center fixing device is at stake top 1m positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620273228.2U CN206233273U (en) | 2016-04-05 | 2016-04-05 | A kind of pile for prestressed pipe Internal forces test device for being implanted into steel bar stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620273228.2U CN206233273U (en) | 2016-04-05 | 2016-04-05 | A kind of pile for prestressed pipe Internal forces test device for being implanted into steel bar stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206233273U true CN206233273U (en) | 2017-06-09 |
Family
ID=58985851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620273228.2U Expired - Fee Related CN206233273U (en) | 2016-04-05 | 2016-04-05 | A kind of pile for prestressed pipe Internal forces test device for being implanted into steel bar stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206233273U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696635A (en) * | 2016-04-05 | 2016-06-22 | 王永洪 | Device for testing internal force of body of prestressed pipe pile with embedded stressed reinforcing steel bars |
-
2016
- 2016-04-05 CN CN201620273228.2U patent/CN206233273U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696635A (en) * | 2016-04-05 | 2016-06-22 | 王永洪 | Device for testing internal force of body of prestressed pipe pile with embedded stressed reinforcing steel bars |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170609 Termination date: 20180405 |