CN201983784U - Fiber optic foundation settlement detector - Google Patents
Fiber optic foundation settlement detector Download PDFInfo
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- CN201983784U CN201983784U CN2010206447444U CN201020644744U CN201983784U CN 201983784 U CN201983784 U CN 201983784U CN 2010206447444 U CN2010206447444 U CN 2010206447444U CN 201020644744 U CN201020644744 U CN 201020644744U CN 201983784 U CN201983784 U CN 201983784U
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- steel pipe
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Abstract
The utility model discloses a fiber optic foundation settlement detector, which comprises a steel tube and a settlement plate arranged above the steel tube. A sylphon bellows is arranged between the steel tube and the settlement plate; a metal bottom plate is mounted in the lower end hole of the steel tube; the inside of the steel tube is provided with a fiber optic bending sensing unit; the upper end of the fiber optic bending sensing unit is connected with the settlement plate; the lower end of the fiber optic bending sensing unit is connected with a metal plate arranged on the inner wall of the steel tube; the fiber optic bending sensing unit comprises a curve bracket as well as a plurality of deformation teeth I and a plurality of deformation teeth II sequentially arranged on the two opposite surfaces of inner side of the curve bracket; the deformation teeth I and the deformation teeth II are correspondingly arranged in a staggered way; signal optical fibers are penetrated through the heads between the deformation teeth I and the deformation teeth II; the signal optical fibers are connected with one end of a optical cable; the other end of the optical cable is led out to a monitoring station; the optical cable is also connected with a test unit; and the test unit is also connected with a processing unit. The fiber optic foundation settlement detector has stronger environmental anti-interference capability and anti-electromagnetic interference capability and can realize remote monitoring.
Description
Technical field
The utility model belongs to measurement, technical field of measurement and test, especially relates to a kind of optical-fiber type settlement of foundation monitoring device based on optical fiber sensing technology.
Background technology
The construction of all kinds of buildingss and artificial facility all needs to handle well ground, and in the construction as high-rise, highway, railway, Measures for Making Ground and Foundation is very crucial.There is additonal pressure in the highway of building on the ground, railway, house to ground, and a period of time groundwork can produce distortion, and main phenomenon is a non-uniform settling, and this will exert an influence to buildings, highway, railway, damages when serious.So the settlement monitoring to ground is very necessary.
Existing settlement of foundation monitoring instrument mainly contains electromagnetic type sedimentometer, dry-reed sedimentometer, wish-bone arm type sedimentometer, water tumbler formula sedimentometer etc., and its know-why is basic identical, all need to use survey chi, by manually measuring.Most popular is the magnet ring type sedimentometer, and its method of measuring sedimentation is that a sedimentation pipe is anchored on the basement rock, and magnet ring is sleeved on the sedimentation pipe periphery, and is embedded in the soil layer position of being concerned about in the ground.When ground sank, magnet ring sank synchronously with ground and sedimentation pipe does not change, and magnet ring then along axially the moving down of sedimentation pipe, by the displacement between measuring and calculating magnet ring and the sedimentation pipe, is realized measuring.This method cost is low, simple in structure, is convenient to construction, and its shortcoming is to need artificial execute-in-place, and labour intensity is big, and measuring accuracy is low, can't carry out remote testing, can not monitor in real time simultaneously, and long term monitoring also is comparatively difficult.These can not satisfy the requirement of engineering of Modern High-Speed development.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of optical-fiber type settlement of foundation monitoring device is provided, it is simple in structure, reasonable in design, processing and fabricating convenient and use-pattern is flexible, highly sensitive, result of use is good, has stronger environment interference simultaneously, and anti-electromagnetic interference capability, not only remote monitoring can be realized, the array type sensing device can also be made up.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of optical-fiber type settlement of foundation monitoring device, it is characterized in that: comprise steel pipe and the settlement plate that is positioned at the steel pipe top, be provided with corrugated tube between described steel pipe and the settlement plate, described corrugated tube upper end is connected with settlement plate, described corrugated tube lower end is connected with steel pipe, in the following stomidium of described steel pipe metal base plate is installed, described steel duct is provided with the fibre-optical bending sensing unit, fixedly connected with the settlement plate lower surface in described fibre-optical bending sensing unit upper end, fixedly connected with the sheet metal on being arranged on the steel pipe inwall in described fibre-optical bending sensing unit lower end, described sheet metal is fixedly mounted on the steel pipe, described fibre-optical bending sensing unit comprises curved bracket and is laid in a plurality of distortion teeth one and a plurality of distortion tooth two on inboard relative two faces of curved bracket continuously, described distortion tooth one is staggered corresponding laying between the tooth two with distortion, form the shaped form passage between the head of described distortion tooth one and distortion tooth two, described shaped form channel interior is equipped with signal optical fibre, described signal optical fibre and optical cable one end join, the described optical cable other end leads to the steel pipe outside and is positioned at the monitoring station place, described optical cable also connects test cell, and described test cell also joins with processing unit.
Above-mentioned optical-fiber type settlement of foundation monitoring device is characterized in that: be provided with auxiliary spring between described settlement plate and the curved bracket.
Above-mentioned optical-fiber type settlement of foundation monitoring device is characterized in that: described auxiliary spring upper end also is provided with substrate, and described substrate is positioned at steel duct and contacts with the auxiliary spring upper end.
Above-mentioned optical-fiber type settlement of foundation monitoring device, it is characterized in that: described settlement plate is provided with the adjustment screw rod, and described adjustment screw rod and settlement plate are threaded engagement, and described adjustment screw rod lower end contacts with substrate.
Above-mentioned optical-fiber type settlement of foundation monitoring device is characterized in that: described settlement plate upper surface is provided with groove, and described adjustment screw rod end cap is positioned at described groove, and the upper surface of described adjustment screw rod is not higher than the upper surface of settlement plate.
Above-mentioned optical-fiber type settlement of foundation monitoring device is characterized in that: be installed with jump ring on the described adjustment screw rod, described jump ring is positioned at the settlement plate lower surface, the also fixedly connected slide bar in described settlement plate lower surface, and described slide bar and substrate are slidingly matched.
Above-mentioned optical-fiber type settlement of foundation monitoring device is characterized in that: an end of described signal optical fibre connects light reflecting device, and the other end of described signal optical fibre connects 1 * 2 optical branching device, and described 1 * 2 optical branching device joins by optical cable and test cell.
Above-mentioned optical-fiber type settlement of foundation monitoring device is characterized in that: described curved bracket is shaped form housing, spring, serrate support or corrugated tube.
Above-mentioned optical-fiber type large deformation settlement of foundation monitoring device, it is characterized in that: the two ends of described signal optical fibre are provided with light reflecting device.
The utility model compared with prior art has the following advantages:
1, simple in structure, processing and fabricating is convenient and version is various, and use-pattern is flexible.
2, use easy and simple to handle and each inter-module annexation is reasonable in design, be used, realize longer-distance real-time monitoring by fibre-optical bending sensing unit and bending loss of optical fiber testing tool.
3, measuring accuracy height is installed and is laid conveniently.
4, can test a plurality of monitoring points at a distance, easily the member sensor array.
5, because optical fiber has good anti-electromagnetic interference capability, make this device have good anti-electromagnetic interference (EMI).
6, need not operating personnel to the monitoring scene, reduced working strength significantly, improved work efficiency.
7, the monitoring scene need not power supply, makes this Unit Installation, uses and reduced cost.
In sum, the utility model is simple in structure, reasonable in design, processing and fabricating convenient and use-pattern is flexible, highly sensitive, result of use is good, can resist electromagnetic interference (EMI) and remote monitoring in real time, has reduced working strength, has improved work efficiency.
Below by drawings and Examples, the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the inner structure synoptic diagram of curved bracket among the embodiment 1.
Fig. 3 is the structural representation of embodiment 2.
Fig. 4 is the structural representation of embodiment 3.
Fig. 5 is the structural representation of embodiment 4.。
Fig. 6 is the structural representation of embodiment 5.
Fig. 7 is the inner structure synoptic diagram of curved bracket among the embodiment 5.
Fig. 8 is the structural representation of embodiment 6.
Fig. 9 is the inner structure synoptic diagram of curved bracket among the embodiment 6.
Figure 10 is the structural representation of embodiment 7.
Figure 11 is the structural representation of embodiment 8.
Description of reference numerals:
The 1-optical cable; 4-1-is out of shape tooth one; 4-2-is out of shape tooth two;
The 5-test cell; The 7-processing unit; The 9-steel pipe;
The 10-settlement plate; The 11-corrugated tube; The 12-sheet metal;
The 15-metal base plate; The 19-curved bracket; The 20-auxiliary spring;
The 21-point of fixity; The 23-slide bar; The 24-jump ring;
25-adjusts screw rod; The 26-substrate; The 27-gullet plate;
The 33-signal optical fibre; The 38-spring wire; The 40-corrugated tube;
The 41-tube wall; 45-1 * 2 optical branching devices; The 46-light reflecting device.
Embodiment
A kind of optical-fiber type settlement of foundation monitoring device as illustrated in fig. 1 and 2, comprise steel pipe 9 and the settlement plate 10 that is positioned at steel pipe 9 tops, be provided with corrugated tube 11 between described steel pipe 9 and the settlement plate 10, described corrugated tube 11 upper ends are connected with settlement plate 10, described corrugated tube 11 lower ends are connected with steel pipe 9, in the following stomidium of described steel pipe 9 metal base plate 15 is installed, described steel pipe 9 inside are provided with the fibre-optical bending sensing unit, fixedly connected with settlement plate 10 lower surfaces in described fibre-optical bending sensing unit upper end, fixedly connected with the sheet metal 12 on being arranged on steel pipe 9 inwalls in described fibre-optical bending sensing unit lower end, described sheet metal 12 is fixedly mounted on the steel pipe 9, described fibre-optical bending sensing unit comprises curved bracket 19 and is laid in a plurality of distortion tooth one 4-1 and a plurality of distortion tooth two 4-2 on inboard relative two faces of curved bracket 19 continuously, be staggered corresponding laying between described distortion tooth one 4-1 and distortion tooth two 4-2, form the shaped form passage between the head of described distortion tooth one 4-1 and distortion tooth two 4-2, described shaped form channel interior is equipped with signal optical fibre 33, described signal optical fibre 33 joins with optical cable 1 one ends, described optical cable 1 other end leads to steel pipe 9 outsides and is positioned at the monitoring station place, described optical cable 1 also connects test cell 5, and described test cell 5 also joins with processing unit 7.
In the present embodiment, described curved bracket 19 is the shaped form housing, and a plurality of distortion tooth one 4-1 and a plurality of distortion tooth two 4-2 correspondences are laid on the inwall of shaped form housing 19.Suit protective cannula outside optical cable 1 as steel pipe, guarantees that optical cable is not damaged.Described signal optical fibre 33 is the outside optical fiber that is surrounded by multi-protective layer, as tight tube fiber, carbon coated fiber, polyimide coated optical fiber etc., also can be plastic optical fiber, multi-core fiber, thin footpath optical fiber or photonic crystal fiber, or many signal optical fibres 33 are clamped between distortion tooth one 4-1 and distortion tooth two 4-2 side by side, or many signal optical fibres 33 are merged into signal optical fibre bundle or signal optical fibre band by resin; Described signal optical fibre 33 external packets are covered with one deck waterproof layer, as waterproofing unction, can further prevent the erosion of hydrone to signal optical fibre 33, have prolonged the serviceable life of signal optical fibre 33.
Using method of the present utility model is: pore-forming in the soil of position, monitoring point, the utility model device integral body to be buried underground, and sheet metal 12 touches basement rock or other structure, and optical cable 1 passes around settlement plate 10 from steel pipe 9 and draws.When ground sinks, settlement plate 10 sinks synchronously with ground, distance between settlement plate 10 and the sheet metal 12 reduces, make curved bracket 19 compressions, thereby make and be laid on curved bracket 19 inwalls relatively that a plurality of distortion tooth one 4-1 of both sides and the distance between a plurality of distortion tooth two 4-2 reduce, variable in distance between distortion tooth one 4-1 and distortion tooth two 4-2 makes the bending curvature of signal optical fibre 33 change, cause the variation of the optical signal power of transmission in signal optical fibre 33, record this variation and this information is passed to processing unit 7 by test cell 5, processing unit 7 calculates the displacement that settlement plate 10 sinks.
Embodiment 2
As shown in Figure 3, present embodiment as different from Example 1: described settlement plate 10 is provided with adjusts screw rod 25, and described adjustment screw rod 25 is a threaded engagement with settlement plate 10, and described adjustment screw rod 25 lower ends contact with substrate 26.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
Embodiment 3
As shown in Figure 4, present embodiment as different from Example 2: be provided with auxiliary spring 20 between described settlement plate 10 and the curved bracket 19, described auxiliary spring 20 is connected by point of fixity 21 with curved bracket 19.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 2.
Embodiment 4:
As shown in Figure 5, present embodiment as different from Example 3: described settlement plate 10 upper surfaces are provided with groove, and described adjustment screw rod 25 end caps are positioned at described groove, and the upper surface of described adjustment screw rod 25 is not higher than the upper surface of settlement plate 10.Described auxiliary spring 20 upper ends also are provided with substrate 26, and described substrate 26 is positioned at steel pipe 9 inside and contacts with auxiliary spring 20 upper ends.Be installed with jump ring 24 on the described adjustment screw rod 25, described jump ring 24 is positioned at settlement plate 10 lower surfaces, the also fixedly connected slide bar 23 in described settlement plate 10 lower surfaces, and described slide bar 23 is slidingly matched with substrate 26.A kind of preferred way is a substrate 26 with what adjust that screw rod 25 cooperates is blind threaded hole.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 3.
Shown in Fig. 6 and 7, present embodiment is as different from Example 1: described curved bracket 19 is a spring, spring is to be made of spring wire 38, distortion tooth one 4-1 is corresponding with distortion tooth two 4-2 to be laid in the spring wire 38 between the two adjacent rings spring wire, and distortion tooth one 4-1 be out of shape the interlaced laying of tooth two 4-2.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
Embodiment 6
Shown in Fig. 8 and 9, present embodiment is as different from Example 1: described curved bracket 19 is for to be made of corrugated tube 40, distortion tooth one 4-1 is corresponding with distortion tooth two 4-2 be laid on the tube wall 41 of corrugated tube 40 on the two opposite side surfaces of recess, and distortion tooth one 4-1 be out of shape the interlaced laying of tooth two 4-2.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
Embodiment 7
As shown in figure 10, present embodiment is as different from Example 1: described curved bracket 19 is the serrate support, the serrate support is made of gullet plate 27, and gullet plate 27 is interlocked by two gullet plates and forms, and is laid with distortion tooth one 4-1 and distortion tooth two 4-2 of interlaced correspondence on the opposite face of two gullet plates 27.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
Embodiment 8
As shown in figure 11, present embodiment is as different from Example 1: an end of described signal optical fibre 33 connects light reflecting device 46, light reflecting device 46 is fixed on steel pipe 9 inwalls, the other end of described signal optical fibre 33 connects 1 * 2 optical branching device 45, described 1 * 2 optical branching device 45 joins by optical cable 1 and test cell 5, can make the light signal of transmission in signal optical fibre 33 pass through curved bracket 19 twice like this, thereby further improve sensing accuracy.Preferably, the two ends of signal optical fibre 33 are provided with light reflecting device 46, then the test cell 5 reflected light signal power by the light reflecting device 46 at the two ends of detection signal optical fiber 33 is poor, just can obtain the loss value of this signal optical fibre 33, and can avoid the optical fiber link changes of properties in light source, photo-detector and the optical cable 1 in the test cell 5 and the error introduced, further improve the precision of test result.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (9)
1. optical-fiber type settlement of foundation monitoring device, it is characterized in that: comprise steel pipe (9) and be positioned at the settlement plate (10) of steel pipe (9) top, be provided with corrugated tube (11) between described steel pipe (9) and the settlement plate (10), described corrugated tube (11) upper end is connected with settlement plate (10), described corrugated tube (11) lower end is connected with steel pipe (9), metal base plate (15) is installed in the following stomidium of described steel pipe (9), described steel pipe (9) inside is provided with the fibre-optical bending sensing unit, fixedly connected with settlement plate (10) lower surface in described fibre-optical bending sensing unit upper end, fixedly connected with the sheet metal (12) on being arranged on steel pipe (9) inwall in described fibre-optical bending sensing unit lower end, described sheet metal (12) is fixedly mounted on the steel pipe (9), described fibre-optical bending sensing unit comprises curved bracket (19) and is laid in a plurality of distortion teeth one (4-1) and a plurality of distortion tooth two (4-2) on inboard relative two faces of curved bracket (19) continuously, be staggered corresponding laying between described distortion tooth one (4-1) and distortion tooth two (4-2), form the shaped form passage between the head of described distortion tooth one (4-1) and distortion tooth two (4-2), described shaped form channel interior is equipped with signal optical fibre (33), described signal optical fibre (33) joins with optical cable (1) one end, described optical cable (1) other end leads to steel pipe (9) outside and is positioned at the monitoring station place, described optical cable (1) also connects test cell (5), and described test cell (5) also joins with processing unit (7).
2. according to the described optical-fiber type settlement of foundation of claim 1 monitoring device, it is characterized in that: be provided with auxiliary spring (20) between described settlement plate (10) and the curved bracket (19).
3. according to the described optical-fiber type settlement of foundation of claim 2 monitoring device, it is characterized in that: described auxiliary spring (20) upper end also is provided with substrate (26), and described substrate (26) is positioned at steel pipe (9) inside and contacts with auxiliary spring (20) upper end.
4. according to the described optical-fiber type settlement of foundation of claim 1 monitoring device, it is characterized in that: described settlement plate (10) is provided with adjusts screw rod (25), described adjustment screw rod (25) is a threaded engagement with settlement plate (10), and described adjustment screw rod (25) lower end contacts with substrate (26).
5. according to the described optical-fiber type settlement of foundation of claim 4 monitoring device, it is characterized in that: described settlement plate (10) upper surface is provided with groove, described adjustment screw rod (25) end cap is positioned at described groove, and the upper surface of described adjustment screw rod (25) is not higher than the upper surface of settlement plate (10).
6. according to the described optical-fiber type settlement of foundation of claim 4 monitoring device, it is characterized in that: be installed with jump ring (24) on the described adjustment screw rod (25), described jump ring (24) is positioned at settlement plate (10) lower surface, the also fixedly connected slide bar in described settlement plate (10) lower surface (23), described slide bar (23) is slidingly matched with substrate (26).
7. according to the described optical-fiber type settlement of foundation of claim 1 monitoring device, it is characterized in that: an end of described signal optical fibre (33) connects light reflecting device (46), the other end of described signal optical fibre (33) connects 1 * 2 optical branching device (45), and described 1 * 2 optical branching device (45) joins by optical cable (1) and test cell (5).
8. according to the described optical-fiber type settlement of foundation of claim 1 monitoring device, it is characterized in that: described curved bracket (19) is shaped form housing, spring, serrate support or corrugated tube.
9. according to the described optical-fiber type settlement of foundation of claim 1 monitoring device, it is characterized in that: the two ends of described signal optical fibre (33) are provided with light reflecting device (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206447444U CN201983784U (en) | 2010-12-07 | 2010-12-07 | Fiber optic foundation settlement detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206447444U CN201983784U (en) | 2010-12-07 | 2010-12-07 | Fiber optic foundation settlement detector |
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| Publication Number | Publication Date |
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| CN201983784U true CN201983784U (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206447444U Expired - Fee Related CN201983784U (en) | 2010-12-07 | 2010-12-07 | Fiber optic foundation settlement detector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418334A (en) * | 2011-09-28 | 2012-04-18 | 上海杰蜀光电科技有限公司 | Remote automatic monitoring system for subgrade settlement and monitoring method thereof |
| CN104501773A (en) * | 2014-12-16 | 2015-04-08 | 河海大学 | Device and method for monitoring vertical deformation of hydraulic construction |
| CN104501772A (en) * | 2014-12-16 | 2015-04-08 | 河海大学 | Device and method for monitoring differential settlement in portfolio for soil-stone combined region with hydraulic structure |
| CN108592871A (en) * | 2018-04-28 | 2018-09-28 | 中国石油天然气集团有限公司 | Storage tank optic foundation settlement detector and system |
| CN111562358A (en) * | 2020-05-06 | 2020-08-21 | 武汉大学 | Transformer oil gas content prediction method and system based on combined model |
-
2010
- 2010-12-07 CN CN2010206447444U patent/CN201983784U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418334A (en) * | 2011-09-28 | 2012-04-18 | 上海杰蜀光电科技有限公司 | Remote automatic monitoring system for subgrade settlement and monitoring method thereof |
| CN102418334B (en) * | 2011-09-28 | 2013-12-04 | 上海杰蜀光电科技有限公司 | Remote automatic monitoring system for subgrade settlement and monitoring method thereof |
| CN104501773A (en) * | 2014-12-16 | 2015-04-08 | 河海大学 | Device and method for monitoring vertical deformation of hydraulic construction |
| CN104501772A (en) * | 2014-12-16 | 2015-04-08 | 河海大学 | Device and method for monitoring differential settlement in portfolio for soil-stone combined region with hydraulic structure |
| CN104501772B (en) * | 2014-12-16 | 2015-08-12 | 河海大学 | Hydro-structure soil stone calmodulin binding domain CaM non-uniform settling combination monitoring device and method |
| CN108592871A (en) * | 2018-04-28 | 2018-09-28 | 中国石油天然气集团有限公司 | Storage tank optic foundation settlement detector and system |
| CN111562358A (en) * | 2020-05-06 | 2020-08-21 | 武汉大学 | Transformer oil gas content prediction method and system based on combined model |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20111207 |