CN208238763U - A kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement - Google Patents
A kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement Download PDFInfo
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- CN208238763U CN208238763U CN201820930789.4U CN201820930789U CN208238763U CN 208238763 U CN208238763 U CN 208238763U CN 201820930789 U CN201820930789 U CN 201820930789U CN 208238763 U CN208238763 U CN 208238763U
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Abstract
The utility model discloses a kind of devices for real-time measurement soil body deeply mixing cement-soil pile and surface settlement, it includes: displacement measurement sensor, distribution type fiber-optic (FBG) demodulator, data analysis system；Displacement measurement sensor includes monitoring rod, the optical fiber that entirety is U-shaped on monitoring rod, the settlement measurement sensor that monitoring rod upper end is arranged in is arranged in；Monitoring rod includes that bottom sets cuspidated measuring rod and is threadedly coupled the extension bar on measuring rod top；One end of optical fiber is connected with distribution type fiber-optic (FBG) demodulator, and data analysis system is connected with distribution type fiber-optic (FBG) demodulator.The utility model is compared with traditional monitoring technology, and without drilling, one section of measuring rod, one section is vertically squeezed into the soil body by the way of static load extruding, easy for construction quick；Monitoring rod and the recyclable reuse of optical fiber after project；Design is simple, integrates settlement monitoring, horizontal displacement monitoring；Measuring speed is fast, intuitive to show, engineer application is strong.
Description
Technical field
The invention belongs to geotechnical engineering monitoring technical fields, and in particular to one kind is used for real-time measurement soil body deep water prosposition
Move the device with surface settlement.
Background technique
The measurement method of existing soil body deeply mixing cement-soil pile is mainly artificial to carry out areal survey, such measurement method
As a result discontinuous, there are measurement blind areas；The measurement process time is longer, cannot achieve the monitoring in real time and automated；Movable survey
Oblique instrument is easy to damage, and durability is poor；When soil deformation is larger, inclinometer pipe bending can not lead to more than inclinometer after certain angle
It crosses, measuring point is caused to fail；It is fallen into inclinometer pipe in sundries or pipe and penetrates into a large amount of mud, inclinometer can not pass through, and also will lead to survey
Point failure.
Summary of the invention
To solve the above-mentioned problems, it is heavy for real-time measurement soil body deeply mixing cement-soil pile and surface that the present invention provides one kind
The device of drop.The horizontal displacement for mainly applying to deep soil measures, and passes through the compatible deformation of steel pipe and the soil body, optical fiber measurement steel
Pipe surface strain, super wideband wireless positioning system measure end displacement, and strain data and end displacement data are surveyed by displacement
The horizontal displacement of system-computed soil body each position, and the deformation state of the real-time display soil body are measured, realizes the continuous reality of deep soil
When monitor.Production is simple, as a result accurately, engineer application it is strong.
A kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement, it is characterised in that: it includes: position
Measurement sensor, distribution type fiber-optic (FBG) demodulator, data analysis system；The displacement measurement sensor includes monitoring rod, sets
The settlement measurement sensor set the optical fiber on monitoring rod, monitoring rod upper end is set；The monitoring rod includes that bottom is set
Cuspidated measuring rod and it is threadedly coupled the extension bar on measuring rod top；The side of the measuring rod is fixed equipped with optical fiber
Groove；The connecting hole of connection optical fiber fixed groove is equipped on the upside of the tip；The optical fiber is mounted on optical fiber fixed groove
Interior, bottom is passed through by connecting hole, whole U-shaped；The optical fiber is arranged in optical fiber fixed groove, and one end of optical fiber passes through
Wire jumper is connected with distribution type fiber-optic (FBG) demodulator, and data analysis system is connected with distribution type fiber-optic (FBG) demodulator；
Further, the optical fiber fixed groove that has is in semi-cylindrical, and the opening size of optical fiber fixed groove is less than
The diameter of optical fiber；
Further, the side of measuring rod, axis two sides, and the axis with measuring rod is arranged in the optical fiber fixed groove
Line is arranged in parallel；
Further, the side of the extension bar, axis two sides are equipped with optical fiber fixed groove, and the axis with measuring rod
It is arranged in parallel；
Further, be additionally provided with optical fiber lock optical fiber being fixed in optical fiber fixed groove on the optical fiber fixed groove
Determine device, the fibre lock include be arranged in the optical fiber fixed groove two sides of extension bar, measuring rod threaded hole and
Through the fibre lock ring that bolt is fixed；
Further, the settlement measurement sensor is super wideband wireless positioning system；
Further, the data analysis system includes strain measurement system, horizontal displacement calculating system, settlement calculation system
System and as the result is shown four, interface part.
The utility model has the beneficial effects that compared with traditional monitoring technology, it, will by the way of static load extruding without drilling
One section of measuring rod, one section vertically squeezes into the soil body, easy for construction quick；Monitoring rod and the recyclable reuse of optical fiber after project；
Design is simple, integrates settlement monitoring, horizontal displacement monitoring；Measuring speed is fast, intuitive to show, engineer application is strong.
Detailed description of the invention
Fig. 1 is a kind of use state for real-time measurement soil body deeply mixing cement-soil pile and the device of surface settlement of the present invention
Figure；
Fig. 2 is a kind of main view for real-time measurement soil body deeply mixing cement-soil pile and the device of surface settlement of the present invention；
Fig. 3 is a kind of main view for real-time measurement soil body deeply mixing cement-soil pile and the device of surface settlement of the present invention；
Fig. 4 is a kind of left view for real-time measurement soil body deeply mixing cement-soil pile and the device of surface settlement of the present invention；
Fig. 5 be the present invention it is a kind of for the measuring rod of real-time measurement soil body deeply mixing cement-soil pile and the device of surface settlement with
Extension bar connecting portion cross-sectional view；
Fig. 6 is a kind of Section A-A for real-time measurement soil body deeply mixing cement-soil pile and the device of surface settlement of the present invention
Figure；
Fig. 7 is that the present invention is a kind of for the measuring rod of real-time measurement soil body deeply mixing cement-soil pile and the device of surface settlement
Cross-sectional view；
Fig. 8 is that the present invention is a kind of for the extension bar of real-time measurement soil body deeply mixing cement-soil pile and the device of surface settlement
Cross-sectional view.
Specific embodiment
Embodiment:
Attached drawing 1-8 is referred to, a kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement, it is wrapped
It includes: displacement measurement sensor, distribution type fiber-optic (FBG) demodulator 8, data analysis system 9；
The displacement measurement sensor includes that monitoring rod 1, the optical fiber 2 that 1 surface of monitoring rod is arranged in and setting are being supervised
The settlement measurement sensor 3 of 1 upper end of measuring staff；
The monitoring rod 1 includes that bottom is equipped with the measuring rod 11 at tip 113 and is threadedly coupled on 11 top of measuring rod
Extension bar 12；
The optical fiber 2 is arranged on monitoring rod 1, and one end of optical fiber 2 passes through wire jumper 81 and 8 phase of distribution type fiber-optic (FBG) demodulator
Connection, data analysis system 9 are connected with distribution type fiber-optic (FBG) demodulator 8；
The measuring rod 11 is cylindrical, tubulose, is generally process using steel pipe, length 3m；
The side of the measuring rod 11 is equipped with optical fiber fixed groove 111, and optical fiber fixed groove 111 is located at measuring rod 11
Axis two sides, and it is arranged in parallel with the axis of measuring rod 11；
The connecting hole 1131 of connection optical fiber fixed groove 111 is equipped on the upside of the tip 113；
The extension bar 12 is cylindrical, and sectional dimension is identical as the sectional dimension of measuring rod 11, generally uses steel pipe
It is process, length 3m；
The side of the extension bar 12, the optical fiber fixed groove 111 equipped with size identical as measuring rod 11；
Described has optical fiber fixed groove 111 in semi-cylindrical, and the opening size of optical fiber fixed groove 111 is less than optical fiber
(2) diameter, the phenomenon that being not in sliding or fall off to guarantee optical fiber 2 in optical fiber fixed groove 111, the light
Be additionally provided with fibre lock optical fiber being fixed in optical fiber fixed groove 111, the optical fiber lock on fine fixed groove 111
Determining device includes the fibre lock fixed through bolt that 111 two sides of optical fiber fixed groove of extension bar 12, measuring rod 11 are arranged in
Ring 115；
It is divided into 0.3m between the setting of the fibre lock ring 115, is uniformly arranged in the outer of optical fiber fixed groove 111
Portion；Optical fiber 2 to be fixed in optical fiber fixed groove 111；
The top of the measuring rod 11 is equipped with hickey 114；
The threaded joints 121 that the bottom of the extension bar 12 and the hickey 114 on 11 top of measuring rod match；
The top of the extension bar 12 is equipped with connection screw thread interface 114；
The extension bar 12 is threadedly coupled with measuring rod 11；
In order to guarantee the optical fiber anchor of extension bar 12 and measuring rod 11 when extension bar 12 is threadedly coupled with measuring rod 11
Slot 111 can be mutually matched, and adjusting nut 122 is equipped on threaded joints 121；For adjusting extension bar 12 and measuring rod 11
Relative positional relationship；
The optical fiber 2 is mounted in optical fiber fixed groove 111, and bottom is passed through by connecting hole 1131, whole U-shaped；
One end of the optical fiber 2 is connected by wire jumper 81 with distribution type fiber-optic (FBG) demodulator 8；
The settlement measurement sensor 3 is super wideband wireless positioning system.
The data analysis system includes strain measurement system, horizontal displacement calculating system, settlement calculation system and knot
Four parts of fruit display interface.
In use, determining the depth of burying first, twice of depth long optical fibers 2 is taken, by optical fiber 2 from one section measuring rod 11 of bottommost
Connecting hole 1131 be formed through U-shaped circuit, optical fiber 2 is placed into optical fiber fixed groove 111, with optical fiber locking ring 115 will
Fibre lock squeezes into the soil body in optical fiber fixed groove 111, by measuring rod 11, applies glue of tightening up a screw in hickey 114, puts on pad
Circle connects an extension bar 12, and the circumferential position relationship of measuring rod 11 and extension bar 12 is adjusted with adjusting nut 122, so that measurement
111 position of optical fiber fixed groove of bar 11 and extension bar 12 is corresponding, then consolidates optical fiber 2 in the optical fiber for being placed into extension bar 12
Determine in groove 111, with optical fiber locking ring 115 by fibre lock；Above step is repeated, until reaching the depth of burying, in monitoring rod 1
Top install settlement measurement sensor 3.
The distribution type fiber-optic (FBG) demodulator 8 obtains the strain data of two optical fiber of steel pipe, and sends data to data
In analysis system 9, is calculated and be displaced according to data.
The symmetrical laying optical fiber in monitoring rod two sides (whole U-shaped), so the reason of arrangement are for compensation temperature variation
The strain of generation, specific as follows:
The strain of optical fiber measurement includes the axial strain of monitoring rod at same section and moment of flexure strains and temperature change produces
Raw strain, wherein due to soil mass of foundation pit horizontal displacement generate be moment of flexure strain.By on the outside of inclinometer pipe with respect to 180 °
Laying optical fiber in both direction, then carry out operation appropriate and find out moment of flexure strain value, process is as follows:
WhereinFor normal strain caused by moment of flexure,For negative strain caused by moment of flexure, εTTo be strained caused by temperature, εNFor
Axial strain, then the moment of flexure strain at the section are
Since monitoring rod is with soil body compatible deformation, optical fiber is closely connect (by fixed groove and locking again with monitoring rod
Ring), compatible deformation, compensation temperature influence after fibre strain be monitoring rod surface strain, utilize strain-displacement conversion public
The conversion from strain to displacement can be realized in formula, and the strain data measured by optical fiber is to calculate the deep water prosposition of the soil body
It moves.Calculation method is as follows:
Wherein transposed matrixCoefficient matrixStrain matrixH is prison
The diameter of measuring staff, z are the strain data sampling interval.
Strain data is calculated as to the displacement number of each measuring point of steel pipe by horizontal displacement calculating system in data analysis system
According to operation display interface intuitively shows displacement data with settlement monitoring data in real time.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not limited to this hair the foregoing is merely a specific embodiment of the invention
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (7)
1. a kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement, it is characterised in that: it includes: displacement
Measurement sensor, distribution type fiber-optic (FBG) demodulator (8), data analysis system (9)；
The displacement measurement sensor includes monitoring rod (1), the optical fiber (2) being arranged on monitoring rod (1), is arranged in monitoring rod
(1) the settlement measurement sensor (3) of upper end；
The monitoring rod (1) includes that bottom is equipped with the measuring rod (11) of tip (113) and is threadedly coupled in measuring rod (11)
The extension bar (12) on top；
The side of the measuring rod (11) is equipped with optical fiber fixed groove (111)；Connection light is equipped on the upside of the tip (113)
The connecting hole (1131) of fine fixed groove (111)；The optical fiber (2) is mounted in optical fiber fixed groove (111), and bottom is by even
Hole (1131) is connect to pass through, it is whole U-shaped；
One end of the optical fiber (2) is connected by wire jumper (81) with distribution type fiber-optic (FBG) demodulator (8), data analysis system
(9) it is connected with distribution type fiber-optic (FBG) demodulator (8).
2. a kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement according to claim 1,
Be characterized in that: the optical fiber fixed groove (111) is in semi-cylindrical, and the opening size of optical fiber fixed groove (111) is less than
The diameter of optical fiber (2).
3. a kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement according to claim 2,
Be characterized in that: the optical fiber fixed groove (111) is arranged in the side of measuring rod (11), axis two sides, and and measuring rod
(11) axis is arranged in parallel.
4. a kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement according to claim 3,
Be characterized in that: the side of the extension bar (12), axis two sides be equipped with optical fiber fixed groove (111), and with measuring rod (11)
Axis it is arranged in parallel.
5. a kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement according to claim 4,
It is characterized in that: being additionally provided with the optical fiber being fixed on optical fiber in optical fiber fixed groove (111) on the optical fiber fixed groove (111)
Locking device, the fibre lock include being arranged in extension bar (12), the optical fiber fixed groove (111) of measuring rod (11)
The threaded hole of two sides and the fibre lock ring fixed through bolt.
6. a kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement according to claim 1 or 5,
It is characterized by: the settlement measurement sensor (3) is super wideband wireless positioning system.
7. a kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement according to claim 1,
Be characterized in that: the data analysis system includes strain measurement system, horizontal displacement calculating system, settlement calculation system and knot
Four parts of fruit display interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820930789.4U CN208238763U (en) | 2018-06-14 | 2018-06-14 | A kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820930789.4U CN208238763U (en) | 2018-06-14 | 2018-06-14 | A kind of device for real-time measurement soil body deeply mixing cement-soil pile and surface settlement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534730A (en) * | 2018-06-14 | 2018-09-14 | 昆山市建设工程质量检测中心 | A kind of device for measuring soil body deeply mixing cement-soil pile and surface settlement in real time |
| CN109827543A (en) * | 2019-03-29 | 2019-05-31 | 重庆文理学院 | A kind of pile foundation type soil body sedimentation monitoring system based on optical fiber optical measuring technique |
| CN112484693A (en) * | 2020-11-19 | 2021-03-12 | 河南理工大学 | Coal mine goaf surface subsidence monitoring device |
-
2018
- 2018-06-14 CN CN201820930789.4U patent/CN208238763U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534730A (en) * | 2018-06-14 | 2018-09-14 | 昆山市建设工程质量检测中心 | A kind of device for measuring soil body deeply mixing cement-soil pile and surface settlement in real time |
| CN109827543A (en) * | 2019-03-29 | 2019-05-31 | 重庆文理学院 | A kind of pile foundation type soil body sedimentation monitoring system based on optical fiber optical measuring technique |
| CN112484693A (en) * | 2020-11-19 | 2021-03-12 | 河南理工大学 | Coal mine goaf surface subsidence monitoring device |
| CN112484693B (en) * | 2020-11-19 | 2022-06-28 | 河南理工大学 | Coal mine goaf surface subsidence monitoring device |
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