CN201600120U - Soil interior sedimentation measuring device - Google Patents
Soil interior sedimentation measuring device Download PDFInfo
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- CN201600120U CN201600120U CN2010200498349U CN201020049834U CN201600120U CN 201600120 U CN201600120 U CN 201600120U CN 2010200498349 U CN2010200498349 U CN 2010200498349U CN 201020049834 U CN201020049834 U CN 201020049834U CN 201600120 U CN201600120 U CN 201600120U
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- corrugated tube
- steel pipe
- sedimentation
- measuring device
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Abstract
The utility model discloses a soil interior sedimentation measuring device. An LVDT displacement sensor is mounted inside a hole at the upper end of a steel tube, a conducting wire is led out from the inside of the steel tube, a matching clearance between the displacement sensor and the steel tube is filled by a plastic protecting film, a metal bottom plate is arranged inside a hole at the lower end of the steel tube, the top end of a probe of the displacement sensor is provided with a nut, a spring is sleeved outside the probe, the nut at the top end of the probe can be abutted with the lower end surface of a sedimentation plate, a corrugated tube is sleeved outside the spring, and one end of the corrugated tube is fixed on an outer cylindrical surface of the upper end of the steel tube while the other end of the corrugated tube is mounted on the lower end surface of the sedimentation plate. The measuring device is buried integrally, and the conducting wire is led out from a lateral surface of the top layer without affecting layered compacting construction of backfilled soil. In addition, the soil interior sedimentation measuring device can fast and accurately measure sedimentation at real time by aid of the displacement sensor, can realize remote transmission, automatic measurement and long-term observation, is simple in structure and operation, can be recycled and reused, not only is adaptable to geotechnical model tests, but also can be applied to field sedimentation measurement of foundations and roadbeds.
Description
Technical field
The utility model relates to a kind of proving installation of Geotechnical Engineering technology, is specifically related to a kind of inside soil body sedimentation proving installation.
Background technology
To the measuring method of inside soil body sedimentation, main a kind of home position testing method is that a circular sedimentation pipe is anchored to basement rock, and magnet ring is enclosed within the sedimentation pipe periphery, is embedded in each observation aspect position at present.When the soil body was subjected to displacement, magnet ring can sedimentation pipe can not sink with soil body displacement, and magnet ring then produces along the sedimentation tubular axis and moves, and by the relative slippage of measuring and calculating magnet ring with sedimentation pipe, realized measuring purpose.There is following shortcoming in this method: 1, the sedimentation pipe burial place can not compaction treatment, near the sedimentation pipe soil body with from sedimentation pipe at a distance soil mass property there are differences, cause measuring error; Must from the hole of sedimentation pipe, put down the just position of energy measurement magnet ring of magnetic probe when 2, detecting, can only manual measurement, low precision, workload is big, and efficient is low.
Through the prior art literature search is found, Chinese patent application numbers 200420035072.1, title: delaminating deposition instrument, publication number: CN2685821, open date: 2005.03.16, it " has adopted the electrical measurement displacement transducer, can be have quickly and accurately directly measured settling amount in real time ", but its device: 1, the testing tool volume greatly and comparatively complicated, cost is higher; 2, measure the on-the-spot test that is primarily aimed at roadbed, the scope of application is little.
Chinese patent application numbers 200810037407.6, title: soil body internal deformation testing device, publication number: CN101270972A, open date: 2008.9.24, its " simple in structure; easy to process; simple to operate; as to be applied to geotechnical model test test; can convenient test inside soil body sedimentation situation; that measurement structure accurately and reliably ", but it has following shortcoming: when the tamping in layers construction of the backfill soil body need be carried out in the proving installation top, can influence preparation of soil sample quality and preparation efficiency, and can influence other test unit laying, bring adverse effect to model test, so more limitation is arranged in the practical application.
Chinese patent application numbers 200720173516.1, title: a kind of settlement plate and assembled delaminating deposition device, publication number: CN201094020Y, open date: 2008.7.30, this apparatus structure are comparatively complicated, and making and difficulty of processing are big, still need artificial reading, can not gather in real time, operating process is loaded down with trivial details, is of limited application.
Summary of the invention
At the deficiencies in the prior art, the utility model provides a kind of settlement measuring device inside soil body, is applied to geotechnical model test or on-the-spot test, solved can't convenient test inside soil body sedimentation situation a difficult problem.
The technical scheme that the above technical matters that solves the utility model adopts is:
The utility model comprises settlement plate, LVDT displacement transducer, spring, corrugated tube, steel pipe, metal base plate; The LVDT displacement transducer is installed in the upper end hole of steel pipe; sensor conductor is drawn from steel pipe; the tolerance clearance of LVDT displacement transducer and steel pipe partly adopts the plastic protective film for plastics filling; in the following stomidium of steel pipe metal base plate is housed; the top of LVDT displacement transducer chaining pin is provided with nut; spring housing is outside chaining pin; the nut on chaining pin top can withstand on the settlement plate lower surface; corrugated tube is enclosed within outside the spring; one end of corrugated tube be fixed on steel pipe upper end external cylindrical surface on, the other end of corrugated tube is installed in the settlement plate lower surface.
Described settlement plate is circular flat board or square plate, and the corrugated tube length that the below connects is all elongated length greater than chaining pin; The internal diameter of corrugated tube is greater than outer diameter of steel pipes.
Compare with background technology, the beneficial effect that the utlity model has is:
1, the utility model adopts integral body to bury underground, and lead is drawn from the top layer side, can not influence the compaction in layers construction of the backfill soil body.
2, the utility model adopts the LVDT displacement transducer, can measure settling amount fast, accurately, in real time.
3, the utility model can be realized remote transmission, measurement and long-term observation automatically.
4, the utility model is simple in structure, easy to process, simple to operate, can realize recycling and reusing.
5, the utility model measurement is applied widely, is not only applicable to geotechnical model test, can also be applied to the on-the-spot settlement measurement of ground, roadbed.
Description of drawings
Fig. 1 is a structural principle synoptic diagram of the present utility model.
Fig. 2 is a connecting pipe structure enlarged diagram of the present utility model.
Among the figure: 1, settlement plate, 2, the LVDT displacement transducer, 3, nut, 4, bolt, 5, chaining pin, 6, spring, 7, sensor conductor, 8, corrugated tube, 9, steel pipe, 10, plastic protective film for plastics, 11, hoop, 12, metal base plate.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1 and Figure 2, the utility model comprises settlement plate 1, LVDT displacement transducer 2, spring 6, corrugated tube 8, steel pipe 9, metal base plate 12; LVDT displacement transducer 2 is installed in the upper end hole of steel pipe 9; and with hoop 11; nut 3 and bolt 4 are fixing; sensor conductor 7 is drawn from steel pipe 9; LVDT displacement transducer 2 partly adopts plastic protective film for plastics 10 fillings with the tolerance clearance of steel pipe 9; in the following stomidium of steel pipe 9 metal base plate 12 is housed; the top of LVDT displacement transducer chaining pin 5 is provided with nut 3; spring 6 is enclosed within outside the chaining pin 5; the nut 3 on chaining pin 5 tops can withstand on settlement plate 1 lower surface; corrugated tube 8 is enclosed within outside the spring 6; one end of corrugated tube 8 be fixed on steel pipe 9 upper end external cylindrical surfaces on; the other end of corrugated tube 8 is installed in settlement plate 1 lower surface; corrugated tube 8 connects steel pipe 9, and connected mode all adopts bonding or glued.
Described settlement plate 1 is circular flat board or square plate, and corrugated tube 8 length that the below connects are all elongated length greater than chaining pin 5; The internal diameter of corrugated tube 8 is greater than steel pipe 9 external diameters.
The utility model integral body is buried underground, requires metal base plate 12 to touch horizon d or structure (rigidity and intensity much larger than soil layer) on every side, adopts connecting pipe during curtailment, and hoop 11 is fixing, is threaded.
Using method of the present utility model is:
When geotechnical model test test or on-the-spot test, earlier LVDT displacement transducer 2, settlement plate 1, spring 6, corrugated tube 8, steel pipe 9 are assembled into an integral body, the length of connecting pipe is decided apart from the distance of horizon d or structure according to measuring point.Pore-forming in design point position soil, then connecting pipe and the utility model integral body are buried underground, metal base plate 12 touches horizon d or structure, sensor conductor 7 passes along settlement plate 1 all sides from steel pipe 9 and draws, when the soil body sinks, settlement plate 1 sinks synchronously with the soil body, the nut 3 on compressing chaining pin 5 tops, settlement plate 1 lower surface, make spring 6 compression deformations, chaining pin 5 shortens, LVDT displacement transducer 2 is transferred to ground surveying instrument with its signal that records by sensor conductor 7, can obtain measurement data, realizes measuring purpose.Corrugated tube 8 and steel pipe 9 are isolated the LVDT displacement transducer 2 and the test soil body, avoid displacement transducer 2 and surrounding soil to influence each other.
The utility model adopts and different designs such as traditional settlement plate and magnetic inductive delaminating deposition instrument, the LVDT displacement transducer is inverted is used, and can not influence the tamping in layers construction of the settlement plate top backfill soil body; Simultaneously, this apparatus structure is simple, easy to process, simple to operate, real time data acquisition, test result accurately and reliably, also can realize recycling and reusing, be applicable to geotechnical model test test and on-the-spot test, be with a wide range of applications.
The above only is the schematic embodiment of the utility model, can not limit the scope that the utility model is implemented with it.So the amplification of its equivalent assemblies is dwindled, displacement, or, all still belong to the covering scope of the utility model claims according to equivalent variations and modification that the utility model protection domain is done.
Claims (2)
1. a settlement measuring device inside soil body is characterized in that, comprises settlement plate (1), LVDT displacement transducer (2), spring (6), corrugated tube (8), steel pipe (9), metal base plate (12); LVDT displacement transducer (2) is installed in the upper end hole of steel pipe (9); sensor conductor (7) is drawn from steel pipe (9); LVDT displacement transducer (2) partly adopts plastic protective film for plastics (10) filling with the tolerance clearance of steel pipe (9); metal base plate (12) is housed in the following stomidium of steel pipe (9); the top of LVDT displacement transducer chaining pin (5) is provided with nut (3); spring (6) is enclosed within outside the chaining pin (5); the nut (3) on chaining pin (5) top can withstand on settlement plate (1) lower surface; corrugated tube (8) is enclosed within outside the spring (6); one end of corrugated tube (8) be fixed on steel pipe (9) upper end external cylindrical surface on, the other end of corrugated tube (8) is installed in settlement plate (1) lower surface.
2. a kind of settlement measuring device inside soil body according to claim 1 is characterized in that: described settlement plate (1) is circular flat board or square plate, and corrugated tube (8) length that the below connects is all elongated length greater than chaining pin (5); The internal diameter of corrugated tube (8) is greater than steel pipe (9) external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200498349U CN201600120U (en) | 2010-01-08 | 2010-01-08 | Soil interior sedimentation measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200498349U CN201600120U (en) | 2010-01-08 | 2010-01-08 | Soil interior sedimentation measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201600120U true CN201600120U (en) | 2010-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200498349U Expired - Fee Related CN201600120U (en) | 2010-01-08 | 2010-01-08 | Soil interior sedimentation measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201600120U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620643A (en) * | 2012-03-15 | 2012-08-01 | 李建国 | Integrated linear variable differential transformer (LVDT) displacement sensor for measuring micro strain of pile foundation |
| CN103306254A (en) * | 2013-06-08 | 2013-09-18 | 温岭市迪信勘察仪器有限公司 | Probe for testing lateral load of deep soil |
| CN104164861A (en) * | 2014-08-27 | 2014-11-26 | 成都市容德建筑劳务有限公司 | Method for monitoring foundation settlement |
| CN108413928A (en) * | 2015-08-21 | 2018-08-17 | 中交天津港湾工程研究院有限公司 | A kind of soil body delaminating deposition amount monitoring system |
-
2010
- 2010-01-08 CN CN2010200498349U patent/CN201600120U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620643A (en) * | 2012-03-15 | 2012-08-01 | 李建国 | Integrated linear variable differential transformer (LVDT) displacement sensor for measuring micro strain of pile foundation |
| CN103306254A (en) * | 2013-06-08 | 2013-09-18 | 温岭市迪信勘察仪器有限公司 | Probe for testing lateral load of deep soil |
| CN103306254B (en) * | 2013-06-08 | 2015-03-11 | 温岭市迪信勘察仪器有限公司 | Probe for testing lateral load of deep soil |
| CN104164861A (en) * | 2014-08-27 | 2014-11-26 | 成都市容德建筑劳务有限公司 | Method for monitoring foundation settlement |
| CN108413928A (en) * | 2015-08-21 | 2018-08-17 | 中交天津港湾工程研究院有限公司 | A kind of soil body delaminating deposition amount monitoring system |
| CN108413928B (en) * | 2015-08-21 | 2020-07-28 | 中交天津港湾工程研究院有限公司 | Soil body layering settlement monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20130108 |