CN202182711U - Horizontal displacement measuring device of structural object relative to subgrade - Google Patents
Horizontal displacement measuring device of structural object relative to subgrade Download PDFInfo
- Publication number
- CN202182711U CN202182711U CN2011202362668U CN201120236266U CN202182711U CN 202182711 U CN202182711 U CN 202182711U CN 2011202362668 U CN2011202362668 U CN 2011202362668U CN 201120236266 U CN201120236266 U CN 201120236266U CN 202182711 U CN202182711 U CN 202182711U
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- temperature correction
- roadbed
- displacement transducer
- rod
- works
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Abstract
The utility model discloses a horizontal displacement measuring device of a structural object relative to a subgrade. A displacement sensor is fixed on a structural object test point, a telescopic pull rod arranged at the end of the displacement sensor is connected with a near end of a benchmark rod, a far end of the benchmark rod is anchored on a subgrade surface, a temperature correction displacement sensor is fixed at the far end of the benchmark rod and on the near subgrade surface, a telescopic pull rod arranged at the end of the temperature correction displacement sensor is connected with a near end of a temperature correction rod, and a far end of the temperature correction rod is anchored on the subgrade surface. The benchmark rod has the totally same length, standard and material as the temperature correction rod, the displacement sensor has the totally same model, measuring range and precision as the temperature correction displacement sensor, and the test value of the temperature correction displacement sensor achieves correction of the test value of the displacement sensor. The horizontal displacement measuring device is few in measuring errors, high in precision, easy to install and capable of being used for structural object displacement testing in construction and operation of railways and highways.
Description
Technical field
The utility model relates to Geotechnical Engineering works displacement measuring equipment, is specifically related to the horizontal shift measuring equipment of a kind of works with respect to roadbed.
Background technology
Subgrade engineering is the important component part of railway and highway engineering, for satisfying different function requirements, needs to build multi-form works at the ad-hoc location of roadbed, like abutment, culvert, retaining wall, friction pile etc.In the construction and operation process of railway and highway, the effect of works bearing load and the such environmental effects of roadbed ad-hoc location can produce displacement.When works surpasses the control limit value with respect to the horizontal shift of roadbed, with the long-term functions of use of serious deterioration roadbed and works.For grasping the Displacement Development of works, the predict thing so that in time take engineering measure, avoids major accident to take place with respect to the horizontal shift variation tendency of roadbed, is necessary works is measured with respect to the horizontal shift of roadbed.The existing horizontal shift measuring equipment that is used for works such as retaining wall, abutment, friction pile with respect to roadbed; Common have a tiltmeter; Its test philosophy is according to the deviational survey tube's axis and the variable angle between the pedal line that are embedded in works and the base stabilization soil layer; Thereby obtain the horizontal shift value of works, its test error is bigger because of cumulative effect, and the systematic error in the 30m deviational survey length of tube scope can reach 8mm; Measuring accuracy can not satisfy in construction and the operation process of non-fragment orbit high-speed railway the accurately requirement of test of works displacement, and especially can not satisfy ballastless track of high-speed railway end thorn its horizontal displacement controlling value is the requirement of 3mm.In addition; Also need on-the-spot manual work could accomplish data acquisition when adopting the tiltmeter test; Be difficult for realizing monitoring automatically; Because a lot of residing positions of engineering structure are special with environment,, rarefaction of air low like height above sea level, temperature and the point position etc. that is difficult for the arrival works have brought very big difficulty to displacement measurement and data acquisition.
The utility model content
The purpose of the utility model is to provide the horizontal shift measuring equipment of a kind of works with respect to roadbed.The measuring accuracy of this measuring equipment is high, error is little, installation is easy, can satisfy in construction and the operation process of railway and highway engineering the accurate Testing requirement of works displacement.
The utility model realizes that the technical scheme that its goal of the invention adopted is: a kind of works is with respect to the horizontal shift measuring equipment of roadbed, and its composition is:
Displacement transducer is fixed on the works test point, and the end telescopic lever of displacement transducer is connected with the near-end of baseline rod, and the distal anchor of baseline rod is fixed on the roadbed;
The temperature correction displacement transducer is fixed in the baseline rod far-end with near the roadbed far away, and the end telescopic lever of temperature correction displacement transducer is connected with the near-end of temperature correction bar, and the distal anchor of temperature correction bar is fixed on the roadbed;
The length of described baseline rod and temperature correction bar, specification, material are identical, and model, range, the precision of displacement transducer and temperature correction displacement transducer are identical.
The principle of work of the utility model is:
Because displacement transducer and baseline rod are individually fixed in works and away from the roadbed outside the works coverage, the shift value of displacement sensor comprises that works is with respect to the horizontal shift of roadbed, the flexible value of baseline rod temperature influence and the error amount that other factor causes; Temperature correction displacement transducer and temperature correction bar all are fixed in away from the roadbed outside the works coverage, and the shift value of temperature correction displacement sensor includes only the flexible value of temperature correction bar temperature influence and the error amount that other factor causes.Because length, specification, the material of temperature correction bar and baseline rod are identical; The model of temperature correction displacement transducer and displacement transducer, range, precision are identical; The shift value of displacement sensor is deducted the shift value of temperature correction displacement sensor; Can eliminate the error that baseline rod is caused by factors such as temperature, thereby obtain more accurately works with respect to the horizontal shift value of roadbed.
Compared with prior art, the beneficial effect of the utility model is:
One, through adopting the synchronism detection of temperature correction bar and temperature correction displacement transducer; Carry out the correction of displacement transducer test value; Eliminated the displacement measurement error that temperature variation causes factors such as baseline rod stretches to cause; Its test result is accurate, and error is little, can satisfy in construction and the operation process of railway and highway engineering the accurate Testing requirement of works displacement.
Can produce disturbance to adjacent subgrade soil when two, works produces displacement; Cause adjacent subgrade soil to produce extra-stress and distortion; As will directly be anchored in the standard that the end telescopic lever of displacement transducer links to each other on the roadbed adjacent with works; Then standard also can be subjected to displacement with subgrade soil, causes the displacement measurement of works to produce agitation error.The utility model changes standard into baseline rod, the near-end of baseline rod is linked to each other with the end telescopic lever of displacement transducer, and distal anchor is fixed on the roadbed away from the works test point; When works produces horizontal shift, can not produce disturbance, thereby eliminate agitation error, improve measuring accuracy the anchor point of baseline rod.
Three, the utility model only needs testing apparatus is installed on the roadbed; And only need tens centimetres of dark anchoring holes to get final product when being fixed on the member anchoring on the roadbed; Need in works and base stabilization soil layer, to bury underground the deviational survey pipe that is not less than several meters or tens meters than tiltmeter, it is installed easily.
Above-mentioned baseline rod and temperature correction bar are respectively arranged with the spacing member of side direction one, the spacing member two of side direction, can limit being displaced sideways or flexural deformation of baseline rod and temperature correction bar, have further reduced measuring error.
Baseline rod between the spacing member one of above-mentioned side direction is with PVC or PPR protection tube one and this PVC or PPR protection tube one outward and is fixed on the roadbed;
Be with PVC or PPR protection tube two, this PVC or PPR protection tube two also are fixed on the roadbed outward on the temperature correction bar between the spacing member two of above-mentioned side direction.
Like this, can avoid extraneous factor directly to clash into baseline rod and temperature correction bar and cause that situation such as rod member bending occurs, and has further improved the antijamming capability of measuring equipment.
Above-mentioned displacement transducer end telescopic lever with the concrete structure that the baseline rod near-end is connected is: the end of baseline rod is connected with the threaded one end of screw rod; The other end of screw rod is fixedly connected with the horizontal edge of L type web member; The end telescopic lever of displacement transducer passes the vertical edge notch of L type web member, and the position of telescopic lever notch both sides is provided with set nut.
Above-mentioned temperature correction displacement transducer end telescopic lever with the concrete structure that temperature correction bar near-end is connected is: the end of temperature correction bar is connected with the threaded one end of screw rod; The other end of screw rod is fixedly connected with the horizontal edge of L type web member; The end telescopic lever of temperature correction displacement transducer passes the vertical edge notch of L type web member, and the position of telescopic lever notch both sides is provided with set nut.
Above syndeton makes the end telescopic lever of displacement transducer and temperature correction displacement transducer can in the notch of L type web member vertical edge, carry out adjusting, location, locking and the dismounting of three directions, and on-the-spot fitting operation is more convenient, quick.
Above-mentioned baseline rod length is not less than 2 times with the works bond length of roadbed contact position, can guarantee that the anchor point of baseline rod on roadbed do not receive because of the influence of works horizontal shift to adjacent subgrade soil disturbance.
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the enlarged diagram of the local A (displacement transducer and baseline rod syndeton) of Fig. 1.
Fig. 3 is the enlarged diagram of the local B (temperature correction displacement transducer and temperature correction bar syndeton) of Fig. 1.
Fig. 4 is the I-I profile of Fig. 1.
Fig. 5 is the II-II profile of Fig. 1.
Fig. 6 is for adopting the utility model embodiment equipment to the horizontal shift test curve of ballastless track of high-speed railway end thorn structure with respect to roadbed, and horizontal ordinate is the test duration, and ordinate is the horizontal shift test value.
Embodiment
Embodiment
Fig. 1-3 illustrates, and a kind of embodiment of the utility model is, a kind of works is with respect to the horizontal shift measuring equipment of roadbed, and its composition is:
The temperature correction displacement transducer is fixed in baseline rod 21 far-ends with near the roadbed 02 far away, and the end telescopic lever of temperature correction displacement transducer is connected with the near-end of temperature correction bar 22, and the distal anchor of temperature correction bar is fixed on the roadbed 02.
During enforcement, also can the proximal anchor of temperature correction bar 22 be fixed in baseline rod 21 far-ends with near roadbed 02 surface far away, the far-end of temperature correction bar 22 is connected with temperature correction displacement transducer 12 on being fixed on roadbed 02.
This routine baseline rod 21 is identical with length, specification, the material of temperature correction bar 22, and displacement transducer 11 is identical with model, range, the precision of temperature correction displacement transducer.
Fig. 1, Fig. 4 illustrate, and this routine baseline rod 21 and temperature correction bar 22 are respectively arranged with the spacing member of side direction 1, the spacing member 2 42 of side direction.
Fig. 1, Fig. 5 and Fig. 2, Fig. 3 illustrate, and are with PVC or PPR protection tube 1 and this PVC or PPR protection tube 31 1 outside the baseline rod 21 between the spacing member one of this routine side direction and are fixed on the roadbed 02.Be with PVC or PPR protection tube 2 32, this PVC or PPR protection tube 2 32 also are fixed on the roadbed 02 outward on the temperature correction bar 22 between the spacing member 2 42 of side direction.
PVC or PPR protection tube one, two fixing can adopt respectively outside protection tube 1, protection tube 2 32 method of casting concrete pier 51,52 to fix, and also can adopt the method for building brick pier, overcoat U type buckle by laying bricks or stones to fix.
Fig. 1, Fig. 2 illustrate; These routine displacement transducer 11 end telescopic levers with the concrete structure that baseline rod 21 near-ends are connected are: the end of baseline rod 21 is connected with the threaded one end of screw rod 61; The other end of screw rod 61 is fixedly connected with the horizontal edge of L type web member 71; The end telescopic lever of displacement transducer 11 passes the vertical edge notch of L type web member 71, and the position of telescopic lever notch both sides is provided with set nut 81.
Fig. 1, Fig. 3 illustrate; These routine temperature correction displacement transducer 12 end telescopic levers with the concrete structure that temperature correction bar 22 near-ends are connected are: the end of temperature correction bar 22 is connected with the threaded one end of screw rod 62; The other end of screw rod 62 is fixedly connected with the horizontal edge of L type web member 72; The end telescopic lever of temperature correction displacement transducer 12 passes the vertical edge notch of L type web member 72, and the position of telescopic lever notch both sides is provided with set nut 82.
This routine baseline rod length L is not less than 2 times with works 01 bond length of roadbed contact position.
Testing experiment
Adopt above measuring equipment, the horizontal shift of ballastless track of high-speed railway end thorn structure is tested.Baseline rod (temperature correction bar) is made up of the coating steel pipe of length L=21m, external diameter 33.5mm, wall thickness 4.25mm; Displacement transducer 11 and temperature correction displacement transducer 12 are the electrical measurement type displacement meter of range 25mm, and accuracy class is 0.2%.Concrete test data such as following table:
Annotate: each test duration is 30 minutes two o'clock in the morning of the same day, and the end thorn works after the correction is negative indication works extruding roadbed with respect to the horizontal shift value of roadbed.
Two months test datas of last table show: the end thorn structure that displacement transducer 11 is measured is 5.15mm with respect to the horizontal shift maximal value of roadbed; The test value of temperature correction displacement transducer 12 is 2.91mm; End thorn structure after the process temperature correction is 2.24mm with respect to the horizontal shift maximal value of roadbed, and the end thorn works before and after proofreading and correct reaches 129.91% with respect to the horizontal shift value error of roadbed.
Fig. 6 is the end thorn structure of drawing according to last table test data with respect to the horizontal shift of roadbed change curve in time.The curve that is strung by ' ■ ' among Fig. 6 is the horizontal shift change curve before proofreading and correct, and the curve that is strung by ' ◇ ' is the horizontal shift change curve after proofreading and correct.Fig. 6 clearlys show: the horizontal shift test value before proofreading and correct receives Effect of Environmental such as temperature; Fluctuation is big; Horizontal checkout value fluctuation after the correction is little; It is thus clear that the utility model equipment can be eliminated the influence of factor such as temperature to test result well, thereby held the horizontal shift value of thorn structure more accurately with respect to roadbed.
Claims (6)
1. a works is with respect to the horizontal shift measuring equipment of roadbed, and its composition is:
Displacement transducer (11) is fixed on the test point R of works (01), and the end telescopic lever of displacement transducer (11) is connected with the near-end of baseline rod (21), and the distal anchor of baseline rod (21) is fixed on the roadbed (02);
Temperature correction displacement transducer (12) is fixed in baseline rod (21) far-end with near the roadbed (02) far away; The end telescopic lever of temperature correction displacement transducer (12) is connected with the near-end of temperature correction bar (22), and the distal anchor of temperature correction bar is fixed on the roadbed (02);
Described baseline rod (21) is identical with length, specification, the material of temperature correction bar (22), and displacement transducer (11) is identical with model, range, the precision of temperature correction displacement transducer (12).
2. a kind of works according to claim 1 is characterized in that with respect to the horizontal shift measuring equipment of roadbed: described baseline rod (21) and temperature correction bar (22) are respectively arranged with the spacing member of side direction one (41), the spacing member two (42) of side direction.
3. a kind of works according to claim 2 is characterized in that with respect to the horizontal shift measuring equipment of roadbed:
Being with PVC or PPR protection tube one (31) and this PVC or PPR protection tube one (31) outside the baseline rod (21) between the spacing member one (41) of described side direction is fixed on the roadbed (02);
Temperature correction bar (22) between the spacing member two (42) of described side direction upward is with PVC outward or PPR protection tube two (32), this PVC or PPR protection tube two (32) also are fixed on the roadbed (02).
4. a kind of works according to claim 1 is with respect to the horizontal shift measuring equipment of roadbed; It is characterized in that; The end telescopic lever of described displacement transducer (11) with the concrete structure that baseline rod (21) near-end is connected is: an end of the end of baseline rod (21) and screw rod (61) is through being threaded; The other end of screw rod (61) is fixedly connected with the horizontal edge of L type web member (71); The end telescopic lever of displacement transducer (11) passes the vertical edge notch of L type web member (71), and the position of telescopic lever notch both sides is provided with set nut (81).
5. a kind of works according to claim 1 is with respect to the horizontal shift measuring equipment of roadbed; It is characterized in that: the end telescopic lever of described temperature correction displacement transducer (12) with the concrete structure that temperature correction bar (22) near-end is connected is: an end of the end of temperature correction bar (22) and screw rod (62) is through being threaded; The other end of screw rod (62) is fixedly connected with the horizontal edge of L type web member (72); The end telescopic lever of temperature correction displacement transducer (12) passes the vertical edge notch of L type web member, and the position of telescopic lever notch both sides is provided with set nut (82).
6. a kind of works according to claim 1 is characterized in that with respect to the horizontal shift measuring equipment of roadbed: described baseline rod (21) length is not less than 2 times with works (01) bond length of roadbed (02) contact position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202362668U CN202182711U (en) | 2011-07-06 | 2011-07-06 | Horizontal displacement measuring device of structural object relative to subgrade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202362668U CN202182711U (en) | 2011-07-06 | 2011-07-06 | Horizontal displacement measuring device of structural object relative to subgrade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182711U true CN202182711U (en) | 2012-04-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202362668U Withdrawn - After Issue CN202182711U (en) | 2011-07-06 | 2011-07-06 | Horizontal displacement measuring device of structural object relative to subgrade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353350A (en) * | 2011-07-06 | 2012-02-15 | 西南交通大学 | Apparatus for measuring structure horizontal displacement relative to roadbed |
-
2011
- 2011-07-06 CN CN2011202362668U patent/CN202182711U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353350A (en) * | 2011-07-06 | 2012-02-15 | 西南交通大学 | Apparatus for measuring structure horizontal displacement relative to roadbed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120404 Effective date of abandoning: 20131211 |
|
| RGAV | Abandon patent right to avoid regrant |