CN107326942A - PHC tube pile structure loading detection devices and installation method - Google Patents
PHC tube pile structure loading detection devices and installation method Download PDFInfo
- Publication number
- CN107326942A CN107326942A CN201710486835.6A CN201710486835A CN107326942A CN 107326942 A CN107326942 A CN 107326942A CN 201710486835 A CN201710486835 A CN 201710486835A CN 107326942 A CN107326942 A CN 107326942A
- Authority
- CN
- China
- Prior art keywords
- reinforcing bar
- sensor
- pile
- sensor fibre
- fiber
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
Abstract
The invention discloses a kind of PHC tube pile structures loading detection device and installation method, wherein device includes intelligent sensing reinforcing bar, and the intelligent sensing reinforcing bar is fixed on the main reinforcement of pipe pile reinforcing bar cage, and positioned at the outward flange of pile tube；Sensor fibre in the fiber optic closure of the intelligent sensing reinforcing bar is drawn by end optical fiber flange plate, and is concatenated by connecting optical cable with the sensor fibre of extraneous demodulation instrument or other pipe pile reinforcing bar cages.Wherein intelligent sensing reinforcing bar includes opening up straight trough along its length on sensor fibre, fiber optic closure and auxiliary bar, the auxiliary bar, and the sensor fibre is laid along straight trough and is fixed on pre- certain state in straight trough；The fibre-optical splice portion of the sensor fibre is incorporated into fiber optic closure by reinforcing bar elbow.The present invention is using pre-buried sensor fibre, the structural damage that pile tube body can be avoided to be brought by outer wall cutting before pile tube casting concrete.
Description
Technical field
The present invention relates to pile foundation construction detection field, more particularly to a kind of PHC (prestressed high strength concrete) pile tube knot
Structure loading detection device and installation method.
Background technology
In the last few years, PHC pile tubes (i.e. PHC piles) with its excellent load-carrying properties, cheap make
Valency and production, obtain extensive in the engineerings such as skyscraper, road, bridge, harbour, harbour the features such as speed of application is fast
Using.As the Transfer Medium between superstructure load and underlying basis, the security and applicability of foundation pile are for whole work
The importance of journey is self-evident, and the detection to pile body stress, strain is to evaluate foundation pile security and applicability very
The key link.Therefore, research PHC pile tubes are between vertical load, the stress transport mechanism of horizontal loading and structural damage
Rule tool is of great significance.
Due to PHC pile tubes when making, it is necessary to by processes such as prestressed stretch-draw, centrifugal forming and high temperature steam curings,
When implementing corresponding monitoring to PHC pile tubes, the Making programme of pile tube proposes higher want to sensor high temperature resistance, anti-high-voltage performance
Ask；Meanwhile, at the scene in work progress, the axial deformation when being suppressed of PHC pile tubes is larger, to the deformation tolerance of sensor
It is required that very high.Because sensor of interest needs to meet above-mentioned extra particular/special requirement, traditional resistance strain is applied to
When concrete tubular pile is live, survival rate is generally relatively low.Even if surviving, resistance strain is in precision, drift, stably
It is generally difficult to meet on-the-spot test demand in terms of property, and traditional resistive strain transducer is also complex in construction.
Therefore, a kind of sensing device that can adapt to PHC pile tube particular/special requirements need be found to meet the need of structure Long Period Health Monitoring
Ask.
Fiber-optic grating sensor relies on itself electromagnetism interference, good, corrosion-resistant electrical insulation capability, small volume, transmission loss
The advantages of small, transmission capacity is big, measurement range is wide is used widely in the fields such as Aero-Space, building, traffic, the energy.
As fiber optic sensor technology development reaches its maturity, the application in each field shows rapid growth momentum, it is most likely that replace
For traditional sensor.
At present, it is domestic that FBG sensing technologies are applied to the case history that concrete tubular pile is tested, but success or failure half-and-half.
The crucial problem that FBG technologies are used in piling strtucture detection field is the embedded technique of FBG sensor-based systems.Kister is to the biography
Embedded technique of the sensing system in bored concrete pile is studied with feasibility, but is not directed to system and is applied to concrete precast pile
The feasibility analysis of test.Feng Chun applies to FBG sensing technologies in the vertical static load test of PHC, but result of the test is not
Very preferable, the survival rates of the FBG sensors of 4 test piles only has 13%, 47%, 3%, 25% respectively, but the biography survived
Sensor measuring accuracy is higher, can accurately reflect variation tendency of the pile body internal strain with stake top load.As can be seen here, as long as carrying out
This technology, just can be applied in the experiment of concrete tubular pile structural loads by the safeguard measure of FBG sensor-based systems.
Existing patent (publication number：CN102936903A a kind of PHC pile tubes test pile stress, the side of strain detecting) are disclosed
Method.The processes such as setting-out, grooving, line, unwrapping wire, test, fixed cabling, stickup, sealing are specifically included, belongs to typical outer wall and opens
, not only there is certain destruction in groove laying method, and process is extremely complex to tube pile structure, and reliability is poor, be difficult to promote
Use.Existing patent (publication number：CN104727352A a kind of PHC pile tubes fiber optic strain gage installation method) is disclosed.Exist first
The groove position of some sizes is buried around the pile body of PHC pile tubes；Then fiber optic strain gage is embedded to the groove position specified；Finally adopt
Each sensor is attached with optic fibre wire.This method preferably avoids what fiber optic strain gage may be subject to during stake processed
Damage, it also avoid the damage that surrounding soil is brought to fiber optic strain gage during driving piles, but work progress is complex, and stake
There is the risk gradually increased with embedded increasing for number of sensors in the degree of injury of body structure.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of PHC (prestressed high strength concrete) pipes
Pilework loading detection device and installation method, the sense light based on optical fiber optical grating array technology is prepared using industrial wire-drawer-tower
Fibre, sensor fibre collection sensing, is transmitted in one, for PHC tube pile structures stress, strain detecting, with capacity is big, distance
The features such as long, densely distributed, multi-parameter fusion and high measurement accuracy；It is different that sensor, method is laid from traditional outer wall fluting,
The present invention is before tubular pile concrete is poured, one-time formed sensor fibre to be previously implanted to the rod iron for having carved groove, then
Rod iron is bundled with steel reinforcement cage, then carries out the processes such as follow-up prestressed stretch-draw, centrifugal forming and high temperature steam curing,
With survival rate height, good reliability, measurement is accurate, lay convenient and with low cost the features such as, and to pile tube body construction without appointing
What is damaged, it is easy to promoted the use of a large area.
The present invention is reaches above-mentioned purpose, and the technical scheme used is：
On the intelligent sensing reinforcing bar of the present invention, including sensor fibre, fiber optic closure and auxiliary bar, the auxiliary bar
Straight trough is opened up along its length, and the sensor fibre is laid along straight trough and is fixed on pre- certain state in straight trough；Should
The fibre-optical splice portion of sensor fibre is incorporated into fiber optic closure by reinforcing bar elbow.
Connect filling epoxy resin mortar in above-mentioned technical proposal, the straight trough.
Above-mentioned technical proposal is connect, the sensor fibre includes single-mode fiber, optical fiber optical grating array sensor and oversheath, described
Optical fiber optical grating array sensor is made up of the fiber grating of some phase co-wavelengths, and outside, which is arranged between oversheath, sensor, to be passed through
Single-mode fiber is concatenated.
Above-mentioned technical proposal is connect, the oversheath is extrusion molding of material and optical fiber optical grating array sensor of epoxy resin
Shaping.
Above-mentioned technical proposal is connect, the oversheath is by pvc material, the tight cover materials of PVC or epoxide resin material system
Into.
Above-mentioned technical proposal is connect, the afterbody tapping of the auxiliary bar is connected by rubber and lock ring with fiber optic closure.
The PHC tube pile structure loading detection devices of the present invention, including above-mentioned intelligent sensing reinforcing bar, the intelligent sensing reinforcing bar are consolidated
On the main reinforcement for being scheduled on pipe pile reinforcing bar cage, and positioned at the outward flange of pile tube；
Sensor fibre in the fiber optic closure of the intelligent sensing reinforcing bar is drawn by end optical fiber flange plate, and by connecting light
Cable is concatenated with the sensor fibre of extraneous demodulation instrument or other pipe pile reinforcing bar cages.
Above-mentioned technical proposal is connect, the fiber optic closure is fixed on pile tube axle center.
The installation method of the PHC tube pile structure loading detection devices of the present invention, comprises the following steps：
Straight trough is cut along auxiliary bar lateral wall from head end to tail end using Cold-forming process, and polished with sand paper；
The iron filings in straight trough, dust are removed with hair-dryer and hairbrush clean, and mark with marking pen the tool of sensor
The extraction position of body installation site and fibre-optical splice；
Sensor fibre is laid along straight trough, the fiber-optic grating sensor in sensor fibre and the installation site one marked in advance
One correspondence, fixes fiber-optic grating sensor two ends, and allow sensor to keep pre- certain state using rapid curing glue；
All fiber-optic grating sensors are fixed after finishing, comprehensive fill out is carried out to straight trough using epoxy resin mortar
Fill, seal, then sensor fibre joint by reinforcing bar elbow is incorporated into fiber optic closure, to ensure sensor fibre and joint in pipe
It is against damages in the follow-up production process of stake；
Before tubular pile concrete is poured, the auxiliary bar for having laid sensor fibre is fixed on to the main steel of pipe pile reinforcing bar cage
On muscle, and positioned at the outward flange of pile tube；
Sensor fibre in fiber optic closure is drawn by end optical fiber flange plate, and by connecting optical cable and extraneous (FBG) demodulator
The sensor fibre of table or other pipe pile reinforcing bar cages is concatenated.
The beneficial effect comprise that：The present invention pours coagulation by the cutting on auxiliary bar, and using pile tube
The installation method of pre-buried sensor fibre before soil, it is to avoid the structural damage that pile tube body is brought by outer wall cutting；
In addition, filling reinforcing bar groove using with the epoxy resin mortar of PHC pile tube same intensities, make the mortar after solidification strong
Degree is consistent with tubular pile concrete as far as possible, so that the soil body during efficiently avoid piling around pile tube is to sensor strip
The damage come, is especially suitable for pile tube large-scale promotion application.
Further, stress, the strain detecting of PHC pile tubes are realized using one-time formed sensor fibre, with intensity
High, survival rate is high, measurement is accurate and lays the features such as facilitating.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is a kind of sensor fibre structural representation based on optical fiber optical grating array technology of the present invention；
Fig. 2 be the present invention relates to sensor fibre laying installation schematic diagram；
Fig. 3 be the present invention relates to intelligent reinforcing bar place and layout of roads schematic diagram；
Fig. 4 be the present invention relates to sensor fibre joint connection and protection schematic diagram；
Fig. 5 be the present invention relates to sensor fibre lay profile；
Fig. 6 (a)~(d) is respectively four test pile test curves.
In Fig. 1：1 single-mode fiber；2 optical fiber optical grating array sensors；3 oversheaths.
In Fig. 2：4 complementary screw-threads reinforcing bars；5 reinforcing bar grooves；6 reinforcing bar elbows；7 sensor fibres；8 epoxy resin mortars.
In Fig. 3：9 main reinforcements；10 intelligent reinforcing bars；11 fibre-optical splices；12 fiber optic closures.
In Fig. 4：13 auxiliary bars；14 rubber and lock ring ring flange；15 bottom fiber optic closures；16 upper fibers continue
Box；17 connection optical fiber；18 end optical fiber flange plates；19 connection optical cables.
In Fig. 5：20 steel reinforcement cages；About 21 axial intelligent reinforcing bars；22 or so axial intelligent reinforcing bars.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
PHC (prestressed high strength concrete) the tube pile structure loading detection device of the present invention is prepared using industrial wire-drawer-tower
Based on the sensor fibre of optical fiber optical grating array technology, the sensor fibre collection senses, is transmitted in one, should for PHC tube pile structures
Power, strain detecting, with capacity is big, distance, densely distributed, multi-parameter fusion and the features such as high measurement accuracy；With it is traditional
Outer wall fluting lays sensor, method difference, and the present invention is that before tubular pile concrete is poured, sensor fibre is previously implanted
The rod iron of groove has been carved, has then bundled rod iron with steel reinforcement cage, then has carried out follow-up prestressed stretch-draw, centrifugal forming and height
The processes such as warm steam curing, with survival rate height, good reliability, measurement is accurate, lay convenient and with low cost the features such as, it is and right
Pile tube body construction is without any damage, it is easy to promote the use of a large area.
The intelligent sensing reinforcing bar of the present invention is included on sensor fibre, fiber optic closure and auxiliary bar, the auxiliary bar
Straight trough is opened up along its length, and the sensor fibre is laid along straight trough and is fixed on pre- certain state in straight trough；Should
The fibre-optical splice portion of sensor fibre is incorporated into fiber optic closure by reinforcing bar elbow.
As shown in figure 1, the sensor fibre based on optical fiber optical grating array technology of the embodiment of the present invention is main by single-mode fiber
1st, optical fiber optical grating array sensor 2 and the part of oversheath 3 three are constituted.Wherein, the oversheath can be by pvc material, PVC
Tight cover material or epoxide resin material are made；Described optical fiber optical grating array sensor is by some (5~1000) phase co-wavelengths
Constituted for 1550nm fiber grating, the reflectivity of fiber grating is that the spacing between 0.01%, two neighboring grating is 1.5m,
Concatenated between sensor by single-mode fiber；Described sensor fibre can be by material and optical fiber of the oversheath for epoxy resin
Passed through outside extrusion moulding of grating array sensor, the sensor fibre after shaping is 1.2mm.
Extrusion moulding can be carried out to the optical fiber optical grating array sensor prepared using epoxide resin material, so as to make
Standby to go out to can be directly used for tube pile structure stress, the sensor fibre of strain detecting, prepared sensor fibre has intensity high, consistent
Property good, install convenient the features such as, it is easy to pile tube group's large-scale network-estabilishing.Cold worked method is used in auxiliary spiral shell of the external diameter for 12mm
Line reinforcing bar lateral wall opens deep 2mm, width 2mm straight groove, then by the sensor fibre prepared (external diameter is 1.2mm) along
Reinforcing bar groove is laid, pasted and sealed；Then, then it will install used in intelligent reinforcing bar and pile tube to be irrigated after sensor fibre
Steel reinforcement cage lashing together, and is fixed on the gap in the middle of pile tube to fiber optic closure progress after well packaged, so as to
Signal is drawn and continued access；Finally, the steel reinforcement cage after sensor fibre is installed carries out follow-up prestressed stretch-draw, centrifugal forming
With the process such as high temperature steam curing, so as to reach the purpose of advance heeling-in sensor, its sensor survival rate can reach
100%.
As shown in Fig. 2 the present invention relates to sensor fibre laying installation schematic diagram.First, will using Cold-forming process
External diameter opens deep 2mm, width 2mm groove (it is understood that can also be according to need for the 12mm lateral wall of complementary screw-threads reinforcing bar 4
Other sizes are set).Straight trough is cut from head end to tail end, is and then polished with sand paper, it is desirable to which groove bottom is smooth, no prominent rib
Angle；Then, the iron filings in reinforcing bar groove 5, dust are removed totally, and marks sensor with marking pen with hair-dryer and hairbrush
Specific installation site and fibre-optical splice extraction position；Again, external diameter is applied for 1.2mm sensor fibre 7 along reinforcing bar groove
If, it is desirable to fiber-optic grating sensor in sensor fibre and the installation site marked in advance are corresponded, using rapid curing glue
Fixed fiber-optic grating sensor two ends, and allow sensor to open 800pm in advance, improve its detection sensitivity；Finally, by all optical fiber light
After gate sensor fixation is finished, comprehensive filling, sealing are carried out to reinforcing bar groove using epoxy resin mortar 8, then will pass
Sense fibre-optical splice is incorporated into fiber optic closure by reinforcing bar elbow 6, so that it is guaranteed that the life of sensor fibre and joint in pile tube subsequently
It is against damages during production.Before tubular pile concrete is poured, the auxiliary bar for having laid sensor fibre is fixed on pile tube steel
On the main reinforcement of muscle cage, and positioned at the outward flange of pile tube；Sensor fibre in fiber optic closure is drawn by end optical fiber flange plate,
And concatenated by connecting optical cable with the sensor fibre of extraneous demodulation instrument or other pipe pile reinforcing bar cages.
As shown in figure 3, the present invention relates to intelligent reinforcing bar place and layout of roads schematic diagram.Intelligent reinforcing bar 10 is by perceiving
Tube pile structure stress, the sensor fibre of strain and complementary screw-threads reinforcing bar are constituted, by intelligent reinforcing bar and the master for making pipe pile reinforcing bar cage
Reinforcing bar 9 is bundled securely, and the sensor fibre joint 11 at two ends is incorporated into fiber optic closure 12 by reinforcing bar elbow, is led to
Cross welding method and fiber optic closure is fixed on pile tube axle center, it is to avoid tubular pile centrifugal is damaged when being molded, and splice tray is close
Envelope protection, in case concrete mud penetrates into destruction fibre-optical splice.
As shown in figure 4, the present invention relates to sensor fibre joint connection and protection schematic diagram.The company of sensor fibre joint
Connect and protection is vital, be the key that decision systems monitor success or failure.The present invention is led in the afterbody tapping of auxiliary bar 13
Cross rubber and lock ring 14 with bottom optical fiber continued access box 15 to be connected, to prevent pile tube from penetrating into concrete mud in centrifugal rotation
Destroy optical fiber.Connection optical fiber 17 in fiber optic closure is drawn by end optical fiber flange plate 18, and by connect optical cable 19 with it is other
Pile tube is connected, and wherein upper fiber continued access box 16 is located at upper and lower two intelligent pile tubes with bottom optical fiber continued access box 15 respectively
Signal transmission is carried out using single fiber cable between axis part, pile tube.
As shown in figure 5, the present invention relates to sensor fibre lay profile.Born in depth study tube pile structure
Ability and stress, the distribution situation of strain of load, devise the intelligence that 4 tunnels are provided with sensor fibre in every root canal pile
Reinforcing bar, is respectively intelligent reinforcing bar 21 and left and right axial intelligent reinforcing bar 22 axially up and down, the intelligent reinforcing bars of 4 developed with pipe
The main reinforcement of pile cages 20 carries out colligation, and positioned at the outward flange of pile tube, is distributed in symmetric form.Light is laid compared to outer wall cutting
The method of fiber grating sensor, the system has the advantages that stability is good, reliability is high, measurement is accurate and lay convenient, and right
Pile tube this body structure not damaged, it is easy to promote the use of a large area.
This experiment has carried out fiber stress testing experiment to 4 root canal piles, by the wavelength variation values of penetration process, can be with
The stress variation of fibre optical sensor is calculated, the axle power in pile body section is calculated by the stress variation of sensor, so as to try to achieve pipe
Frictional force of the stake in injection soil layer., can from figure if Fig. 6 (a)~(d) is respectively 1.~4. test pile test curve
Go out, stake top by after vertical uniform load q, pile compression and to bottom offset, stake side surface is by the upward frictional resistance of soil, pile body lotus
Carry and be delivered to by the collateral resistance brought into play in pile soil horizon, so that shaft load is passed with pile shaft compression with depth
Subtract.As load increases, there is vertical displacement and stake end reaction in stake end, and pile end displacement increases the displacement in each section of pile body, and
Pile side resistance is promoted further to play, it is, in general, that the collateral resistance close to pile body upper soil horizon is played prior to bottom soil layer, and side
Resistance is brought into play prior to end resistance.
The present invention realizes stress, the strain detecting of PHC pile tubes using intelligent sensing reinforcing bar, with intensity height, survival rate
High, measurement is accurate and lays the features such as facilitating；Using the installation method of pre-buried sensor fibre before pile tube casting concrete, it is to avoid
The structural damage that pile tube body is brought by outer wall cutting；Steel is filled using with the epoxy resin mortar of PHC pile tube same intensities
Muscle groove, makes the mortar strength after solidification be consistent as far as possible with tubular pile concrete, so that during efficiently avoid piling
The damage that the soil body around pile tube is brought to sensor, is especially suitable for pile tube large-scale promotion application.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (9)
1. a kind of intelligent sensing reinforcing bar, it is characterised in that including sensor fibre, fiber optic closure and auxiliary bar, the auxiliary
Straight trough is opened up on reinforcing bar along its length, the sensor fibre lays along straight trough and is fixed on straight trough with pre- certain state
It is interior；The fibre-optical splice portion of the sensor fibre is incorporated into fiber optic closure by reinforcing bar elbow.
2. intelligent sensing reinforcing bar according to claim 1, it is characterised in that filling epoxy resin mortar in the straight trough.
3. intelligent sensing reinforcing bar according to claim 1, it is characterised in that the sensor fibre includes single-mode fiber, optical fiber
Grating array sensor and oversheath, the optical fiber optical grating array sensor are made up of the fiber grating of some phase co-wavelengths, outside
Portion is arranged between oversheath, sensor and concatenated by single-mode fiber.
4. intelligent sensing reinforcing bar according to claim 3, it is characterised in that the oversheath for epoxy resin material and
Extrusion moulding of optical fiber optical grating array sensor.
5. intelligent sensing reinforcing bar according to claim 3, it is characterised in that the oversheath is by pvc material, PVC
Tight cover material or epoxide resin material are made.
6. intelligent sensing reinforcing bar according to claim 1, it is characterised in that the afterbody tapping of the auxiliary bar, passes through
Rubber and lock ring are connected with fiber optic closure.
7. a kind of PHC tube pile structures loading detection device, it is characterised in that including intelligent sensing steel as claimed in claim 1
Muscle, the intelligent sensing reinforcing bar is fixed on the main reinforcement of pipe pile reinforcing bar cage, and positioned at the outward flange of pile tube；
Sensor fibre in the fiber optic closure of the intelligent sensing reinforcing bar is drawn by end optical fiber flange plate, and by connect optical cable with
The sensor fibre of external world's demodulation instrument or other pipe pile reinforcing bar cages is concatenated.
8. PHC tube pile structures loading detection device according to claim 7, it is characterised in that the fiber optic closure is consolidated
Due to pile tube axle center.
9. a kind of installation method of PHC tube pile structures loading detection device, it is characterised in that comprise the following steps：
Straight trough is cut along auxiliary bar lateral wall from head end to tail end using Cold-forming process, and polished with sand paper；
The iron filings in straight trough, dust are removed with hair-dryer and hairbrush clean, and mark with marking pen the specific peace of sensor
The extraction position of holding position and fibre-optical splice；
Sensor fibre is laid along straight trough, a pair of the fiber-optic grating sensor in sensor fibre and the installation site 1 that marks in advance
Should, fiber-optic grating sensor two ends are fixed using rapid curing glue, and allow sensor to keep pre- certain state；
All fiber-optic grating sensors are fixed after finishing, using epoxy resin mortar straight trough is carried out comprehensive filling,
Sealing, then sensor fibre joint by reinforcing bar elbow is incorporated into fiber optic closure, to ensure sensor fibre and joint in pile tube
It is against damages in follow-up production process；
Before tubular pile concrete is poured, the auxiliary bar for having laid sensor fibre is fixed on to the main reinforcement of pipe pile reinforcing bar cage
On, and positioned at the outward flange of pile tube；
Sensor fibre in fiber optic closure is drawn by end optical fiber flange plate, and by connect optical cable and extraneous demodulation instrument or
The sensor fibre of other pipe pile reinforcing bar cages is concatenated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486835.6A CN107326942A (en) | 2017-06-23 | 2017-06-23 | PHC tube pile structure loading detection devices and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486835.6A CN107326942A (en) | 2017-06-23 | 2017-06-23 | PHC tube pile structure loading detection devices and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107326942A true CN107326942A (en) | 2017-11-07 |
Family
ID=60194452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710486835.6A Pending CN107326942A (en) | 2017-06-23 | 2017-06-23 | PHC tube pile structure loading detection devices and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107326942A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107653876A (en) * | 2017-11-14 | 2018-02-02 | 青岛理工大学 | Fiber grating sensing system is embedded in a kind of PHC pile tubes forming process and method of testing |
| CN107893420A (en) * | 2017-11-14 | 2018-04-10 | 青岛理工大学 | Static pressure pipe pile pile extension sensor conductor moves towards and guard method |
| CN107938723A (en) * | 2017-11-14 | 2018-04-20 | 青岛理工大学 | Static pressure pipe pile pile extension sensor conductor moves towards and protective device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714860A (en) * | 2016-04-05 | 2016-06-29 | 王永洪 | Internal force test method for pile body of prestressed tubular pile implanted with load-bearing rebar |
-
2017
- 2017-06-23 CN CN201710486835.6A patent/CN107326942A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714860A (en) * | 2016-04-05 | 2016-06-29 | 王永洪 | Internal force test method for pile body of prestressed tubular pile implanted with load-bearing rebar |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107653876A (en) * | 2017-11-14 | 2018-02-02 | 青岛理工大学 | Fiber grating sensing system is embedded in a kind of PHC pile tubes forming process and method of testing |
| CN107893420A (en) * | 2017-11-14 | 2018-04-10 | 青岛理工大学 | Static pressure pipe pile pile extension sensor conductor moves towards and guard method |
| CN107938723A (en) * | 2017-11-14 | 2018-04-20 | 青岛理工大学 | Static pressure pipe pile pile extension sensor conductor moves towards and protective device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105043344B (en) | A kind of sedimentation distribution monitoring system and monitoring method based on continuous fiber section bar | |
| CN103215974B (en) | Foundation pile deflection measurement method based on distributed fiber sensing technique | |
| CN103215975B (en) | Inbuilt method for distributed type sensing cable in foundation pile | |
| CN103604384B (en) | Distributed fiber monitoring method and system for strains and stresses of ship lock structure | |
| CN106247965A (en) | Tunnel surrounding monitoring method based on multifunctional intellectual anchor pole | |
| Ding et al. | A new method for deformation monitoring on H-pile in SMW based on BOTDA | |
| CN107326942A (en) | PHC tube pile structure loading detection devices and installation method | |
| CN210981177U (en) | Intelligent geogrid suitable for tunnel and monitoring system thereof | |
| CN103512686A (en) | Pile body stress testing device of static-pressure high-strength pre-stress concrete pipe pile | |
| CN103669429A (en) | Round solid concrete pile body strain monitoring method based on FBG sensor | |
| US20180100282A1 (en) | Method and apparatus for keeping foundations flat | |
| CN107101590A (en) | Tunnel wall rock deformation distributed optical fiber sensing method and device based on pipe shed support | |
| CN204730824U (en) | A kind of distributed settlement measuring device | |
| CN103323385A (en) | Fiber anchor pole corrosion sensor | |
| CN104389621B (en) | Circumferential intelligentized reinforcement structure and method of shield tunnel | |
| CN101900533A (en) | Optical fiber grating measurement method for monitoring embankment section settlement | |
| CN106959302A (en) | A kind of pile body integrity detection system and method based on low coherence interference technology | |
| CN106320390A (en) | Vertical bank protection plate pile body deformation distributive monitoring method | |
| CN203259452U (en) | Fiber anchor rod corrosion sensor | |
| CN205482823U (en) | Fissured structure of distributed optical fiber monitoring hydraulic tunnel lining cutting | |
| CN105157999B (en) | Appraisal procedure based on Distributed Optical Fiber Sensing Techniques pile integrality and lateral displacement | |
| CN206772242U (en) | A kind of tunnel wall rock deformation distributed optical fiber sensing device based on pipe shed support | |
| CN204730825U (en) | A kind of sedimentation distribution monitoring system based on continuous fiber section bar | |
| CN105863701B (en) | A kind of anchor sensor | |
| JP3880765B2 (en) | Underground optical fiber sensor and optical fiber sensor system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171107 |
|
| RJ01 | Rejection of invention patent application after publication |