CN113932697B - Sensor positioning tool and geotechnical experiment pile body attention point displacement measurement method - Google Patents
Sensor positioning tool and geotechnical experiment pile body attention point displacement measurement method Download PDFInfo
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- CN113932697B CN113932697B CN202111029493.8A CN202111029493A CN113932697B CN 113932697 B CN113932697 B CN 113932697B CN 202111029493 A CN202111029493 A CN 202111029493A CN 113932697 B CN113932697 B CN 113932697B
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 43
- 238000002474 experimental method Methods 0.000 title claims abstract description 35
- 238000000691 measurement method Methods 0.000 title claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000002689 soil Substances 0.000 claims description 7
- 238000009933 burial Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000011160 research Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a sensor positioning tool and a geotechnical experiment pile body focus displacement measurement method, relates to the field of geotechnical experiment displacement sensor fixing devices, and solves the problems that the displacement of different positions of a pile body is difficult to measure in geotechnical model experiments and the like. The technical scheme is characterized by comprising a model box, a fixing frame, supporting legs, a vertical height adjusting assembly and a horizontal adjusting assembly, wherein the model box provides a fixed platform for the base supporting legs; the fixing frame is provided with a plurality of stations for installing the LVDT displacement sensor on the outer ring of the piece to be measured, and the fixing frame is provided with a horizontal adjusting assembly for linking the stations to move along the piece to be measured in opposite directions and a vertical height adjusting assembly for driving the horizontal adjusting assembly to move up and down. The technical effect is that the specific position of the displacement sensor is adjusted through the vertical height adjusting component and the horizontal adjusting component so as to adapt to different pile diameters, different pile lengths and different experimental test requirements.
Description
Technical Field
The invention relates to the field of geotechnical test equipment, in particular to a sensor positioning tool and a displacement measuring method of to-be-measured points.
Background
An LVDT displacement sensor, known as a linear variable differential transformer, belongs to a linear displacement sensor. The working principle is simply referred to as a core-movable transformer. The device consists of a primary coil, two secondary coils, an iron core, a coil framework, a shell and other parts, and has wide application in geotechnical experiment object displacement measurement. However, manufacturers only provide a clamping sleeve for fixing the LVDT, but do not provide a corresponding clamp, and most of LVDT test objects in geotechnical experiments are special-shaped members, so that a support which is flexible in adjustment in various directions, stable in fixation and strong in adaptability to different working conditions is needed for measuring the displacement deformation condition of the concerned point. The existing support is simple in structure, low in freedom degree and single in adaptive experimental working condition.
Disclosure of Invention
The invention aims to provide a sensor positioning tool which has the functions of fixing and adjusting the position of an LVDT, fixes the position of the LVDT according to different experimental requirements, measures the displacement deformation condition of the concerned point, and further analyzes the experimental result.
The technical aim of the invention is realized by the following technical scheme:
sensor positioning tool: comprises a model box, a fixed frame with the center for placing a piece to be tested, and supporting legs for connecting the model box and the fixed frame;
the fixing frame is provided with a plurality of stations for installing the LVDT displacement sensor on the outer ring of the piece to be measured, and the fixing frame is provided with a horizontal adjusting assembly for linking the stations to move along the piece to be measured in opposite directions and a vertical height adjusting assembly for driving the horizontal adjusting assembly to move up and down.
By adopting the technical scheme, the horizontal position of the displacement sensor is adjusted by adjusting the horizontal direction adjusting component in an experiment, and the vertical position of the displacement sensor is adjusted by matching with the vertical height adjusting component to measure the displacement condition of measuring points at different positions; the linkage station on the fixing frame can simultaneously measure the displacement conditions of different positions of the to-be-measured piece in the experiment.
Further set up: the vertical height adjusting assembly comprises a movable support, a bracket connected to the fixed frame in a sliding manner, a sliding groove for the bracket to slide on the fixed frame and a first locking structure for limiting the movement of the bracket.
By adopting the technical scheme, the movable support in the experiment can slide up and down along the supporting leg sliding groove to the required height so as to adapt to measuring pieces with different burial depths and deeper soil layer depths; meanwhile, the bracket can be used for adjusting the vertical position on the fixing frame, and is locked through the first locking structure after being adjusted to the height required by the experiment.
Further set up: the first locking structure comprises a bolt, a positioning plate and a fixing nut, wherein the bolt penetrates through the positioning plate and the fixing frame and is locked with the bracket through the fixing nut.
Through adopting above-mentioned technical scheme, the locating plate passes through bolt and fixation nut and locks in the mount, has very high intensity, rigidity and stability, has guaranteed that the condition such as locking point looseness can not take place in the experiment influences experimental accuracy.
Further set up: the horizontal adjusting component comprises a sliding frame which is connected to the bracket in a sliding way, a second locking structure for locking the position of the sliding frame and a lantern ring.
By adopting the technical scheme, the sliding frame can horizontally slide on the sliding groove of the bracket so as to be adjusted to a proper position and locked by the second locking structure; the lantern ring is used for fixing the position of the LVDT displacement sensor and preventing the sliding of the displacement sensor from influencing experimental results.
Further set up: the second locking structure comprises a pentagonal flange nut and a pentagonal bolt, wherein the pentagonal flange nut penetrates through the grooves of the bracket and the sliding frame and is locked with the bracket through the pentagonal flange nut.
Through adopting above-mentioned technical scheme, pentagonal flange nut passes the grooving of bracket and carriage and passes through pentagonal flange nut and bracket locking, has very high intensity, rigidity and stability in the experiment, has avoided taking place not hard up influence experimental result in the experiment.
Further set up: the brackets and the sliding frames are channel steel; the movable support is channel steel; the supporting legs are L-shaped steel groove, and the lower end parts of the supporting legs are connected with the bottom plate of the model box through bolts.
By adopting the technical scheme, the channel steel has high strength, is not easy to deform, reduces the weight of the whole device, and is convenient to carry and store; the lower end of the supporting leg is connected with the bottom plate of the model box through a bolt, so that the supporting leg has good integrity, and the supporting leg is firmly connected with the model box without loosening during experiments.
Further set up: the mount includes the top ring, and the bottom ring is connected to this vertical stand with a plurality of vertical stand of arranging along the bottom ring on the bracket slides, and top ring and bottom ring pass through between set up slip locking structure to on sliding locking structure sliding connection is to vertical stand, slip locking structure includes lantern ring and lock nut.
By adopting the technical scheme, the vertical upright posts are in sliding connection with the top ring and the bottom ring, so that the device has strong flexibility; the vertical stand column is convenient to adjust the position of the vertical stand column between the top ring and the bottom ring before the experiment starts and is locked to adapt to more complex test working conditions, a plurality of vertical stand columns are positioned in different directions, the displacement conditions of different positions of the piece to be tested can be measured simultaneously in the experiment, and the applicable test working conditions are wide.
Further set up: the bottom ring is provided with a level meter.
By adopting the technical scheme, the level gauge can judge whether the device inclines in the test, and if the device inclines, the heights of supporting legs at different positions are adjusted in time to enable the device to recover to the level.
Further set up: the supporting legs are connected with the model box bottom plate through bolts, and the model box bottom plate is provided with a plurality of bolt positioning holes.
Through adopting above-mentioned technical scheme, can adjust the position of supporting legs according to the experiment needs, adapt to more experimental conditions.
The invention aims to provide a geotechnical experiment pile body attention point displacement measurement method which can measure displacement conditions of a plurality of different attention points in an experiment, further can process different point data to be tested, and provides a pile foundation optimization design method.
The technical aim of the invention is realized by the following technical scheme:
a geotechnical experiment pile body attention point displacement measurement method is characterized in that:
s1, preparation stage
S1.1, determining experimental conditions such as distribution of soil layers of different types, burial depth of a piece to be detected and the like according to research requirements;
s1.2, debugging and calibrating an LVDT displacement sensor, and pre-installing the LVDT displacement sensor on a sliding frame.
S2, experimental stage
S2.1, positioning and mounting supporting feet on a bottom plate of a model box;
s2.2, tamping the layered filling soil to a preset height in the model box, adjusting the fixing frame to a proper position through the movable support, simultaneously adjusting the vertical upright post to a preset position, locking, observing the level gauge, and ensuring the level of the device;
s2.3, positioning and arranging a piece to be measured at the center of the fixing frame;
s2.4, adjusting brackets positioned on the vertical upright posts of each fixing frame to a required height, adjusting the horizontal position of the sliding frame, and locking through a locking structure after the adjustment is finished.
S2.5, connecting the displacement sensor with a data acquisition instrument;
s2.6 starts loading.
S4 ending stage
And S4.1, processing the data acquired by the data acquisition instrument after loading is finished.
In summary, the invention has the following beneficial effects:
1. the two-way adjustment of the vertical position and the horizontal position of the LVDT is realized through the vertical height adjusting assembly and the horizontal direction adjusting assembly, and the displacement deformation measurement of the focus of various experimental objects can be realized; the arrangement of the plurality of linkage stations can simultaneously measure the displacement conditions of different positions of the to-be-measured piece in the test, and the displacement detection is carried out on the attention point of the to-be-measured piece in all directions.
2. The model box, supporting legs and movable support are connected through detachable locking structure, and locating plate and bracket are connected through detachable locking structure, can dismantle after the experiment is accomplished, conveniently place and preserve.
3. The model box, the supporting legs, the movable support and the fixed frame are firmly connected, so that the position in the experiment is not relatively dislocated, and the experiment precision is improved; the supporting legs can be adjusted in position at the bottom of the model box, and the vertical stand columns can be freely adjusted in position between the top ring and the bottom ring, so that the applicable test working conditions are wider.
Drawings
FIG. 1 is a schematic view of a first preferred embodiment;
FIG. 2 is a detailed view of the horizontal adjustment assembly and bracket configuration of the first preferred embodiment;
in the figure, 1, a model box; 2. supporting feet; 3. a vertical height adjustment assembly; 31. a movable support; 32. a first locking structure; 321. a bolt; 322. a positioning plate; 323. a fixing nut; 33. a bracket; 4. a horizontal adjustment assembly; 41. a carriage; 42. a second locking structure; 421. pentagonal flange nut; 422. pentagonal bolts; 43. a collar; 5. a fixing frame; 51. a top ring; 52. a vertical column; 53. a bottom ring; 54. a slide locking structure; 541. a collar; 542. a lock nut; 6. a level gauge; 7. and positioning holes.
Description of the embodiments
The present invention will be described in further detail with reference to the accompanying drawings
First preferred embodiment:
a sensor positioning tool, as shown in figure 1, comprises a model box 1, a fixing frame 5 with the center for placing a piece to be measured, and supporting legs 2 for connecting the model box 1 and the fixing frame 5; the supporting legs 2 are connected with the model box 1 through bolts 321, and a plurality of positioning holes 7 are formed in the bottom plate of the model box 1, so that the fixing frame 5 can be positioned under different working conditions conveniently; the support feet 2 are arranged in a plurality in the orthogonal direction to provide stable support to the device.
The fixing frame 5 is provided with a plurality of stations for installing LVDT displacement sensors on the outer ring of the piece to be detected, the fixing frame 5 is provided with a horizontal adjusting assembly 4 for moving the linked stations along the piece to be detected in opposite directions, and a vertical height adjusting assembly 3 for driving the horizontal adjusting assembly 4 to move up and down, the vertical and horizontal positions of the displacement sensors can be adjusted according to the needs in experiments so as to adapt to the experimental requirements, and the linked stations on the fixing frame 5 can simultaneously measure deformation displacement conditions of a plurality of concerns of the piece to be detected.
As shown in fig. 1, the vertical height adjusting assembly 3 includes a bracket 33 slidably connected to the fixing frame 5, a sliding groove on the fixing frame 5 for sliding the bracket 33, and a first locking structure 32 for limiting movement of the bracket 33, wherein in an experiment, the vertical position of the bracket 33 can be adjusted on the sliding groove on the fixing frame 5, and after the vertical position is adjusted to a proper position, the vertical position is locked by the first locking structure 32 to adapt to testing requirements of different positions of a piece to be tested.
The first locking structure 32 comprises a bolt 321, a locating plate 322 and a fixing nut 323, wherein the bolt 321 penetrates through the locating plate 322 and a vertical upright 52 of the fixing frame 5 to be cut, and is locked with the bracket 33 through the nut after being adjusted to a preset position in an experiment, so that errors caused by dislocation of the position in the experiment process are prevented.
As shown in fig. 2, the horizontal adjustment assembly 4 includes a carriage 41 slidably coupled to the bracket 33 in a lateral direction and a second locking structure 42 for locking the position thereof.
The second locking structure 42 comprises a pentagonal flange nut 421 and a pentagonal bolt 422, wherein the pentagonal flange nut 421 penetrates through the side face grooves of the bracket 33 and the sliding frame 41 and is locked with the bracket 33 through the pentagonal flange nut 421, and the sliding frame 41 can be optionally adjusted to a preset position in an experiment and the pentagonal flange nut 421 is screwed to be locked.
As shown in fig. 2, the sliding frame 41 is connected with a plurality of radius adjustable collars 43, which can fix displacement sensors of different types in experiments; the brackets 33 and the sliding frame 41 are all channel steel; the movable bracket 31 is a channel steel; the supporting legs 2 are L-shaped groove steel, and the channel steel has high strength, so that the mobile support 31 and the supporting legs 2 are prevented from being accidentally deformed in the experiment to influence the experiment accuracy; the lower end of the supporting leg 2 is connected with the bottom plate of the model box 1 through a bolt 321, and the supporting leg is firm and stable in connection and convenient to assemble and disassemble.
As shown in fig. 1, the fixing frame 5 comprises a top ring 51, a bottom ring 53 and a plurality of vertical columns 52 arranged along the bottom ring 53, the bracket 33 is slidingly connected to the vertical columns 52, a sliding locking structure 54 is arranged between the vertical columns 52 and the top ring 51 and the bottom ring 53, and the vertical columns are slidingly connected through the sliding locking structure 54, so that the fixing frame has strong flexibility and does not generate relative dislocation in experiments; the bottom ring 53 is provided with a level gauge 6, which is used for monitoring whether the whole device is level in experiments, and the movable support 31 should be adjusted in time to keep the device level if tilting occurs.
Second preferred embodiment: a method for measuring the displacement of a focus point of a piece to be measured comprises the following steps:
s1, preparation stage
S1.1, determining experimental conditions such as distribution of soil layers of different types, burial depth of a piece to be detected and the like according to research requirements;
s1.2, debugging and calibrating the LVDT displacement sensor, and pre-installing the LVDT displacement sensor on the sliding frame 41.
S2, experimental stage
S2.1, positioning and mounting supporting feet 2 on the bottom plate of the model box 1;
s2.2, tamping the layered filling soil in the model box 1 to a preset height, adjusting the fixing frame 5 to a proper position through the movable bracket 31, simultaneously adjusting the vertical upright post to a preset position, locking, observing the level gauge 6, and ensuring the level of the device;
s2.3, positioning and arranging a piece to be measured at the center of the fixing frame 5;
s2.4, adjusting brackets 33 on sliding grooves of vertical columns 52 of the fixing frames 5 to the required height, adjusting the horizontal position of the sliding frame 41, and locking by a locking structure after the adjustment is finished.
S2.5, connecting the displacement sensor with a data acquisition instrument;
s2.6 starts loading.
S4 ending stage
And S4.1, processing the data acquired by the data acquisition instrument after loading is finished.
The above-described embodiments are provided for illustration only and not for limitation of the present invention, and modifications may be made to the embodiments without creative contribution by those skilled in the art after reading the present specification, as long as they are protected by patent laws within the scope of claims of the present invention.
Claims (7)
1. A sensor positioning tool is characterized in that: comprises a model box (1), a fixing frame (5) with the center for placing a piece to be tested, and supporting feet (2) for connecting the model box (1) and the fixing frame (5);
the fixing frame (5) is provided with a plurality of stations for installing LVDT displacement sensors on the outer ring of the piece to be measured, and the fixing frame (5) is provided with a horizontal adjusting assembly (4) for linking the stations to move along the piece to be measured in opposite directions and a vertical height adjusting assembly (3) for driving the horizontal adjusting assembly (4) to move up and down; the vertical height adjusting assembly (3) comprises a movable bracket (31), a bracket (33) connected to the fixed frame (5) in a sliding manner, a sliding groove on the fixed frame (5) for the bracket (33) to slide, and a first locking structure (32) for limiting the movement of the bracket; the horizontal direction adjusting assembly (4) comprises a sliding frame (41) connected to the bracket (33) in a transverse sliding manner, a second locking structure (42) for locking the position of the sliding frame, and a plurality of lantern rings (43) positioned on the sliding frame (41), wherein the lantern rings (43) are radius-adjustable lantern rings (43);
the fixing frame (5) comprises a top ring (51), a bottom ring (53) and a plurality of vertical columns (52) arranged along the bottom ring (53), the bracket (33) is connected onto the vertical columns (52) in a sliding mode, a sliding locking structure (54) is arranged between the top ring (51) and the bottom ring (53), the bracket is connected onto the vertical columns (52) in a sliding mode through the sliding locking structure (54), and the sliding locking structure (54) comprises a lantern ring (541) and a locking nut (542).
2. The sensor positioning tool of claim 1, wherein: the first locking structure (32) comprises a bolt (321), a locating plate (322) and a fixing nut (323), wherein the bolt (321) penetrates through the locating plate (322) and the fixing frame (5) and is locked with the bracket (33) through the fixing nut (323).
3. The sensor positioning tool of claim 1, wherein: the second locking structure (42) comprises a pentagonal flange nut (421) and a pentagonal bolt (422), wherein the pentagonal flange nut (421) penetrates through the bracket (33) and the cutting groove of the sliding frame (41) and is locked with the bracket (33) through the pentagonal flange nut (421).
4. The sensor positioning tool of claim 1, wherein: the brackets (33) and the sliding frames (41) are all channel steel; the movable support (31) is a channel steel; the supporting legs (2) are L-shaped channel steel, and the lower end parts of the supporting legs (2) are connected with the bottom plate of the model box (1) through bolts.
5. The sensor positioning tool of claim 1, wherein: the bottom ring (53) is provided with a level meter (6).
6. The sensor positioning tool of claim 1, wherein: the supporting legs (2) are connected with the bottom plate of the model box (1) through bolts, and a plurality of bolt positioning holes (7) are formed in the bottom plate of the model box (1).
7. A geotechnical experiment pile body attention point displacement measurement method adopting the sensor positioning tool as claimed in any one of claims 1-6, which is characterized in that:
s1, preparation stage
S1.1, determining experimental conditions such as distribution of soil layers of different types, burial depth of a piece to be detected and the like according to research requirements;
s1.2, debugging and calibrating an LVDT displacement sensor, and pre-installing the LVDT displacement sensor on a sliding frame (41);
s2, experimental stage
S2.1, positioning and mounting supporting feet (2) on a bottom plate of the model box (1);
s2.2, tamping the layered filling soil to a preset height in the model box (1), adjusting the fixing frame (5) to a proper position through the movable support (31), and simultaneously, adjusting the vertical upright post to a preset position, locking, observing the level meter (6) and ensuring the level of the device;
s2.3, positioning and arranging a piece to be tested in the center of the fixing frame (5);
s2.4, adjusting brackets (33) on sliding grooves of vertical columns (52) of the fixing frames (5) to a required height, adjusting the horizontal position of the sliding frame (41), and locking through a locking structure after adjustment;
s2.5, connecting the displacement sensor with a data acquisition instrument;
s2.6, starting loading;
s4 ending stage
And S4.1, processing the data acquired by the data acquisition instrument after loading is finished.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111029493.8A CN113932697B (en) | 2021-09-03 | 2021-09-03 | Sensor positioning tool and geotechnical experiment pile body attention point displacement measurement method |
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| CN202111029493.8A CN113932697B (en) | 2021-09-03 | 2021-09-03 | Sensor positioning tool and geotechnical experiment pile body attention point displacement measurement method |
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| CN113932697A CN113932697A (en) | 2022-01-14 |
| CN113932697B true CN113932697B (en) | 2023-12-19 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191848B1 (en) * | 1999-04-15 | 2001-02-20 | Kodak Polychrome Graphics Llc | Laser sensor holder |
| CN101089549A (en) * | 2006-06-14 | 2007-12-19 | 株式会社百利达 | Linear measurement apparatus |
| CN104913721A (en) * | 2015-06-17 | 2015-09-16 | 上海工程技术大学 | Experimental apparatus for industrial vision sensor detection |
| US20170284911A1 (en) * | 2016-03-31 | 2017-10-05 | Powerchina Huadong Engineering Corporation Limited | Integrated style shear apparatus for rock structural plane and a shear experimental method for rock structural plane |
| CN207163481U (en) * | 2017-08-11 | 2018-03-30 | 华东交通大学 | A kind of triple axle fibre optical sensor device for installing and adjusting |
| CN207456417U (en) * | 2017-11-13 | 2018-06-05 | 兰州市政建设集团有限责任公司 | A kind of displacement monitor and system for monitoring displacement |
| CN108240833A (en) * | 2018-04-10 | 2018-07-03 | 深圳市恒宝通光电子股份有限公司 | A kind of adjustable multiple laser sensor fixed mechanisms |
| CN111188370A (en) * | 2020-03-02 | 2020-05-22 | 浙江大学城市学院 | Centrifugal model test device and method for measuring vertical and horizontal ultimate bearing capacity of pile foundation |
-
2021
- 2021-09-03 CN CN202111029493.8A patent/CN113932697B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191848B1 (en) * | 1999-04-15 | 2001-02-20 | Kodak Polychrome Graphics Llc | Laser sensor holder |
| CN101089549A (en) * | 2006-06-14 | 2007-12-19 | 株式会社百利达 | Linear measurement apparatus |
| CN104913721A (en) * | 2015-06-17 | 2015-09-16 | 上海工程技术大学 | Experimental apparatus for industrial vision sensor detection |
| US20170284911A1 (en) * | 2016-03-31 | 2017-10-05 | Powerchina Huadong Engineering Corporation Limited | Integrated style shear apparatus for rock structural plane and a shear experimental method for rock structural plane |
| CN207163481U (en) * | 2017-08-11 | 2018-03-30 | 华东交通大学 | A kind of triple axle fibre optical sensor device for installing and adjusting |
| CN207456417U (en) * | 2017-11-13 | 2018-06-05 | 兰州市政建设集团有限责任公司 | A kind of displacement monitor and system for monitoring displacement |
| CN108240833A (en) * | 2018-04-10 | 2018-07-03 | 深圳市恒宝通光电子股份有限公司 | A kind of adjustable multiple laser sensor fixed mechanisms |
| CN111188370A (en) * | 2020-03-02 | 2020-05-22 | 浙江大学城市学院 | Centrifugal model test device and method for measuring vertical and horizontal ultimate bearing capacity of pile foundation |
Non-Patent Citations (1)
| Title |
|---|
| 土工格栅–土体界面特性大型直剪试验研究;刘开富等;《岩土工程学报》;第41卷(第增刊期);全文 * |
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