CN104034602B - Soil beam deflection experimental rig - Google Patents
Soil beam deflection experimental rig Download PDFInfo
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- CN104034602B CN104034602B CN201410223712.XA CN201410223712A CN104034602B CN 104034602 B CN104034602 B CN 104034602B CN 201410223712 A CN201410223712 A CN 201410223712A CN 104034602 B CN104034602 B CN 104034602B
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- steel plate
- bearing
- displacement transducer
- sensor
- displacement
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- 239000002689 soil Substances 0.000 title description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 71
- 239000010959 steel Substances 0.000 claims abstract description 71
- 238000006073 displacement reaction Methods 0.000 claims abstract description 41
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 15
- 230000003068 static effect Effects 0.000 claims abstract description 14
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 12
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 5
- 230000004807 localization Effects 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of native beam deflection experimental rig, comprise four steel poles, the first steel plate, the second steel plate, the 3rd steel plate, servo controller, motor, planetary reducer, ball screw lift, power sensor, the first displacement transducer, second displacement sensor, triple motion sensor, the 4th displacement transducer, static data Acquisition Instrument, the first bearing, the second bearing, poly (methyl methacrylate) plate, high definition camera. The present invention can carry out 3 camber beam tests and 4 camber beam tests; Employing displacement controllable loads, rate stabilization, controlled, select space large, can capture the softening properties of Tu Liang; Data acquisition system adopted power sensor and displacement transducer, DATA REASONING precision is high, by static data Acquisition Instrument image data, can complete documentation Tu Liang cracking process; Adopt high definition camera to record native beam crack propagation process, accurate surveying strain localization phenomenon, obtains cracking strain.
Description
Technical field
The invention belongs to mechanical property testing technical field, particularly a kind of native beam deflection experimental rig.
Background technology
Tensile crack is extensively present in viscous soil horizon, as the deformation crack in clay barrier and earth and rockfill dam clay core wall, and the stretch-draw type ground fissure of Canal in Loess Area, the draw crack on slight slope and top, foundation ditch slope etc. The existence in crack significantly reduces barrier performance and the strength characteristics of argillic horizon. Therefore, go the stretch-draw cracking property of Study Viscous soil layer very necessary from test angle.
But there is following problem in the soil body tensile properties testing equipment of development both at home and abroad at present: cell cube testing equipment is many, and model test equipment is little; Traditional experimental rig generally adopts Stress Control formula to load, and can not capture the softening properties of the soil body; The acquisition method of test data is simple, and precision is poor; Function singleness.
Therefore,, in order to meet the requirement of carrying out the research of compacting clay fracture mechanism, need to develop a set of comprehensive, integrated native beam deflection test instrument system.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of native beam deflection experimental rig is provided.
The object of the invention is to be achieved through the following technical solutions: a kind of native beam deflection experimental rig comprises: four steel poles, the first steel plate, the second steel plate, the 3rd steel plate, servo controller, motor, planetary reducer, ball screw lift, power sensor, the first displacement transducer, second displacement sensor, triple motion sensor, the 4th displacement transducer, static data Acquisition Instrument, the first bearing, the second bearing, poly (methyl methacrylate) plate, high definition camera; Wherein, the bottom of four steel poles all with the 3rd steel plate anchoring, the top of four steel poles all with the first steel plate anchoring, the second steel plate is between the first steel plate and the 3rd steel plate, the second steel plate is connected with four steel poles by four linear slider; The first bearing and the second bearing are fixed on the second steel plate; Servo controller, motor, planetary reducer, static data Acquisition Instrument are placed on the 3rd steel plate, servo controller is connected with motor, motor is connected with planetary reducer, planetary reducer top is connected with ball screw lift, the bottom connection of ball screw lift top and power sensor, the position, middle, bottom of the top of power sensor and the second steel plate joins; Static data Acquisition Instrument is connected with power sensor, the first displacement transducer, second displacement sensor, triple motion sensor, the 4th displacement transducer; The first displacement transducer, second displacement sensor, triple motion sensor, the 4th displacement transducer are successively through the first steel plate; The first displacement transducer be positioned at the first bearing directly over, the 4th displacement transducer be positioned at the second bearing directly over; Second displacement sensor and triple motion sensor are symmetrically arranged in the left and right in the first steel plate centre position; The first steel plate bottom surface is fixed at poly (methyl methacrylate) plate top; High definition camera is positioned over the dead ahead of poly (methyl methacrylate) plate; In addition, native beam deflection experimental rig also comprises that one is fixed on the 3rd bearing of the first position, lower surface of steel plate middle or also comprises two the 4th bearings that are symmetrically fixed on the left and right of the first position, lower surface of steel plate middle.
Further, native beam deflection experimental rig also comprises the first pad, the second pad and the 3rd pad, and described the first pad is placed between the second steel plate and power sensor, and described the second pad and the 3rd pad are placed between power sensor and ball screw lift.
The invention has the beneficial effects as follows:
1. load mode advanced technology, adopts displacement controllable to load, and rate stabilization, controlled, select space large, can capture the softening properties of Tu Liang;
2. data acquisition system adopted power sensor and displacement transducer, DATA REASONING precision is high, by static data Acquisition Instrument image data, can complete documentation Tu Liang cracking process;
3. adopt high definition camera to record native beam crack propagation process, accurate surveying strain localization phenomenon, obtains cracking strain;
4. can carry out 3 camber beam tests and 4 camber beam tests, a tractor serves several purposes.
Brief description of the drawings
Fig. 1 is the device schematic diagram of 3 camber beam tests of the present invention, and wherein (a) is front view, is (b) side view;
Fig. 2 is the device schematic diagram of 4 camber beam tests of the present invention, and wherein (a) is front view, is (b) side view;
In figure, soil sample 1, steel pole 2, the first steel plate 3, the second steel plate 4, the 3rd steel plate 5, servo controller 6, motor 7, planetary reducer 8, ball screw lift 9, power sensor 10, the first displacement transducer 11, second displacement sensor 12, triple motion sensor 13, the 4th displacement transducer 14, static data Acquisition Instrument 15, the first bearing 16, the second bearing 17, the 3rd bearing 18, the 4th bearing 19, the first pad 20, the second pad 21, the 3rd pad 22, polyethylene thin plate 23, linear slider 24, poly (methyl methacrylate) plate 25, high definition camera 26.
Detailed description of the invention
With example, the present invention is described in further detail by reference to the accompanying drawings.
As shown in Figure 1-2, a kind of native beam deflection experimental rig of the present invention, comprising: four steel poles 2, three block plate 3-5, servo controller 6, motor 7, planetary reducer 8, ball screw lift 9, power sensor 10, four displacement transducer 11-14, static data Acquisition Instrument 15, the first bearing 16, the second bearing 17, three pad 20-22, poly (methyl methacrylate) plate 25, high definition camera 26;
Wherein, the bottom of four steel poles 2 all with the 3rd steel plate 5 anchorings, the top of four steel poles 2 all with the first steel plate 3 anchorings, the second steel plate 4 is between the first steel plate 3 and the 3rd steel plate 5, the second steel plate 4 is connected with four steel poles 2 by four linear slider 24; The first bearing 16 and the second bearing 17 are fixed on the second steel plate 4; Servo controller 6, motor 7, planetary reducer 8, static data Acquisition Instrument 15 are placed on the 3rd steel plate 5, servo controller 6 is connected with motor 7, motor 7 is connected with planetary reducer 8, planetary reducer 8 tops are connected with ball screw lift 9, ball screw lift 9 tops are by the bottom connection of the 3rd pad 22 and the second pad 21 and power sensor 10, and the top of power sensor 10 joins by the position, middle, bottom of the first pad 20 and the second steel plate 4; Static data Acquisition Instrument 15 is connected with four displacement transducer 11-14 with power sensor 10; Four displacement transducer 11-14 are successively through the first steel plate 3; The first displacement transducer 11 be positioned at the first bearing 16 directly over, the 4th displacement transducer 14 be positioned at the second bearing 17 directly over; Second displacement sensor 12 and triple motion sensor 13 are symmetrically arranged in each 50mm place, left and right in the first steel plate 3 centre positions; The first steel plate 3 bottom surfaces are fixed at poly (methyl methacrylate) plate 25 tops; High definition camera 26 is positioned over the dead ahead of poly (methyl methacrylate) plate.
As shown in Figure 1, the present invention also comprises that one is fixed on the 3rd bearing 18 of the first steel plate 3 positions, lower surface middle.
As shown in Figure 2, the present invention also comprises two the 4th bearings 19 that are fixed on the each 100mm in left and right of the first steel plate 3 positions, lower surface middle.
The course of work of the present invention is as follows:
Soil sample 1 is positioned on the first bearing 16 and the second bearing 17, in soil sample 1, polyethylene thin plate 23 is placed in the 3rd bearing 18 or two the 4th bearing 19 corresponding positions, servo controller 6 is set speed, by motor 7, planetary reducer 8 and ball screw lift 9 drive the second steel plate 4 to move upward, until the polyethylene thin plate 23 in soil sample 1 contacts with the 3rd bearing 18 or two the 4th bearings 19, can test, in process of the test, static data Acquisition Instrument 15 is by power sensor 10 and four displacement transducer 11-14 Real-time Collections and preserve measured data, high definition camera 26 sees through poly (methyl methacrylate) plate 25 and records native beam deformed process.
Claims (2)
1. a native beam deflection experimental rig, it is characterized in that, comprise: four steel poles (2), the first steel plate (3), the second steel plate (4), the 3rd steel plate (5), servo controller (6), motor (7), planetary reducer (8), ball screw lift (9), power sensor (10), the first displacement transducer (11), second displacement sensor (12), triple motion sensor (13), the 4th displacement transducer (14), static data Acquisition Instrument (15), the first bearing (16), the second bearing (17), poly (methyl methacrylate) plate (25), high definition camera (26), wherein, the bottom of four steel poles (2) all with the 3rd steel plate (5) anchoring, the top of four steel poles (2) all with the first steel plate (3) anchoring, the second steel plate (4) is positioned between the first steel plate (3) and the 3rd steel plate (5), and the second steel plate (4) is connected with four steel poles (2) by four linear slider (24), the first bearing (16) and the second bearing (17) are fixed on the second steel plate (4), servo controller (6), motor (7), planetary reducer (8), static data Acquisition Instrument (15) are placed on the 3rd steel plate (5), servo controller (6) is connected with motor (7), motor (7) is connected with planetary reducer (8), planetary reducer (8) top is connected with ball screw lift (9), the bottom connection of ball screw lift (9) top and power sensor (10), the position, middle, bottom of the top of power sensor (10) and the second steel plate (4) joins, static data Acquisition Instrument (15) is connected with power sensor (10), the first displacement transducer (11), second displacement sensor (12), triple motion sensor (13), the 4th displacement transducer (14), the first displacement transducer (11), second displacement sensor (12), triple motion sensor (13), the 4th displacement transducer (14) are successively through the first steel plate (3), the first displacement transducer (11) be positioned at the first bearing (16) directly over, the 4th displacement transducer (14) be positioned at the second bearing (17) directly over, second displacement sensor (12) and triple motion sensor (13) are symmetrically arranged in the left and right in the first steel plate (3) centre position, the first steel plate (3) bottom surface is fixed at poly (methyl methacrylate) plate (25) top, high definition camera (26) is positioned over the dead ahead of poly (methyl methacrylate) plate, in addition, native beam deflection experimental rig also comprises that one is fixed on the 3rd bearing (18) of position, the first steel plate (3) lower surface middle or also comprises two the 4th bearings (19) that are symmetrically fixed on the left and right of position, the first steel plate (3) lower surface middle.
2. native beam deflection experimental rig according to claim 1, it is characterized in that, also comprise the first pad (20), the second pad (21) and the 3rd pad (22), described the first pad (20) is placed between the second steel plate (4) and power sensor (10), and described the second pad (21) and the 3rd pad (22) are placed between power sensor (10) and ball screw lift (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223712.XA CN104034602B (en) | 2014-05-23 | 2014-05-23 | Soil beam deflection experimental rig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223712.XA CN104034602B (en) | 2014-05-23 | 2014-05-23 | Soil beam deflection experimental rig |
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| Publication Number | Publication Date |
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| CN104034602A CN104034602A (en) | 2014-09-10 |
| CN104034602B true CN104034602B (en) | 2016-05-04 |
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| CN201410223712.XA Active CN104034602B (en) | 2014-05-23 | 2014-05-23 | Soil beam deflection experimental rig |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885728A (en) * | 2017-02-14 | 2017-06-23 | 山东省医疗器械产品质量检验中心 | The fixture and method determined for bone plate bending strength and equivalent bending stiffness |
| CN107687968B (en) * | 2017-05-15 | 2020-11-24 | 长安大学 | Loess highland side landslide physical model |
| CN109030228A (en) * | 2018-08-20 | 2018-12-18 | 广东工业大学 | A kind of multifunctional pipe forces testing device |
| CN109187194B (en) * | 2018-10-26 | 2023-10-13 | 南京大学 | OFDR-based soil body tension mechanical property optical fiber monitoring and testing method and device |
| CN115326593B (en) * | 2019-01-25 | 2023-08-04 | 安阳师范学院 | Device and application thereof in fiber reinforced recycled brick aggregate concrete bending test |
| CN114397178A (en) * | 2022-01-24 | 2022-04-26 | 济南纳斯诺工业测试系统有限公司 | Load testing device for autoclaved aerated concrete plate |
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| CN101650285A (en) * | 2009-09-22 | 2010-02-17 | 同济大学 | Fatigue bending machine for concrete material |
| CN101699267A (en) * | 2009-10-21 | 2010-04-28 | 河海大学 | Loading device for testing concrete chloride ion permeability by coulometry and testing method thereof |
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| CN102175528A (en) * | 2011-01-18 | 2011-09-07 | 中国水利水电第十四工程局有限公司勘察设计研究院 | Bearing test device for multifunctional plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3618559B2 (en) * | 1998-09-25 | 2005-02-09 | 株式会社東芝 | Mechanical load test method for semiconductor devices |
| JP2001074627A (en) * | 1999-09-01 | 2001-03-23 | Saginomiya Seisakusho Inc | Material-testing method and device |
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- 2014-05-23 CN CN201410223712.XA patent/CN104034602B/en active Active
Patent Citations (4)
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|---|---|---|---|---|
| CN101650285A (en) * | 2009-09-22 | 2010-02-17 | 同济大学 | Fatigue bending machine for concrete material |
| CN101699267A (en) * | 2009-10-21 | 2010-04-28 | 河海大学 | Loading device for testing concrete chloride ion permeability by coulometry and testing method thereof |
| CN101975701A (en) * | 2010-09-10 | 2011-02-16 | 胡少伟 | Concrete fracture test system and test method thereof |
| CN102175528A (en) * | 2011-01-18 | 2011-09-07 | 中国水利水电第十四工程局有限公司勘察设计研究院 | Bearing test device for multifunctional plate |
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| CN104034602A (en) | 2014-09-10 |
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