CN106404323B - Lamination shear model soil case is applied to when underground structure vibration bench test soil body horizontal to big displacement test method and device - Google Patents
Lamination shear model soil case is applied to when underground structure vibration bench test soil body horizontal to big displacement test method and device Download PDFInfo
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- CN106404323B CN106404323B CN201610475579.6A CN201610475579A CN106404323B CN 106404323 B CN106404323 B CN 106404323B CN 201610475579 A CN201610475579 A CN 201610475579A CN 106404323 B CN106404323 B CN 106404323B
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 141
- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 239000002689 soil Substances 0.000 title claims abstract description 29
- 238000010998 test method Methods 0.000 title abstract description 3
- 238000003475 lamination Methods 0.000 title abstract 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000010008 shearing Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000003384 imaging method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 8
- 230000006378 damage Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011549 displacement method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Soil body horizontal belongs to technical field of civil engineering to big displacement test method and device when lamination shear model soil case is applied to underground structure vibration bench test.Device includes lamination shear model box (1), displacement test system (3), and the displacement test system (3) includes displacement record writing counter (4), displacement transmission device (5), model casing and displacement measurement system attachment device (6)；Wherein, the displacement transmission device (5) is fixedly connected with lamination shear model box (1), is flexibly connected with displacement record writing counter (4)；Displacement record writing counter (4) is fixedly connected by model casing and displacement measurement system attachment device (6) with lamination shear model box (1)；The present invention overcomes tangent displacement sensor in model test is difficult to install and non-contact displacement transducer requires imaging technique high and the problem of need later data to handle, simply, reliability is high, easy to implement.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and relates to a method and a device for testing horizontal large displacement of a soil body when a laminated shear type model soil box is applied to an underground structure vibration table test.
Background
The large-scale rail transit construction makes the subway station structure inevitably pass through the liquefiable soil layer. Since the 80 s in the 20 th century, a series of earthquake damage surveys suggest that the main cause of serious damage to a large number of structures such as houses, bridges, dams, underground structures and the like in earthquakes is lateral large displacement caused by soil liquefaction, and the liquefaction problem research is mainly in a deformation development process because the liquefaction problem only causes damage when deformation caused by liquefaction is enough to harm the safety or normal use of the buildings. The research on the problem of damage of the ground to the structure by large displacement gradually draws great attention in the field of geotechnical anti-seismic engineering in the world. It can be seen from the development of the domestic and overseas seismic design method that the seismic design guiding idea of the underground structure is gradually developed from the traditional strength discrimination to the design principle of deformation control (reaction displacement method), and the soil deformation analysis is more and more emphasized.
Most of measuring methods of the stress value in the test are deformation values in nature, the deformation measurement is more visual than the stress measurement, and the stress distribution is easily deduced by utilizing the strain distribution according to the constitutive relation of materials, so that the deformation measurement is an important position in the model test.
However, due to the relative lag of the measurement technology, the measurement of the displacement of the soil is an urgent problem to be solved in the soil dynamic test, especially in the large-scale vibration table test of the underground structure.
In contact measurement, a test instrument needs to be fixed or attached to the surface of a structure to be measured, which brings many installation difficulties for practical application, such as a pull-wire displacement meter and the like which are commonly used at present; compared with the conventional physical or mechanical displacement test method, the non-contact displacement test technology has the advantages of high test precision, capability of effectively eliminating displacement test errors caused by contact and the like, but has the defects of limited test point positions and test measuring ranges and the like, such as the laser displacement test technology. In recent years, researchers develop global and automatic displacement testing technology by combining photos and dynamic videos acquired by an optical camera with post-image processing, and the method has high requirements on photography technology, certain requirements on post-processing technology and limitation when large displacement is considered.
The existing research shows that the laminated shear type model soil box can effectively reduce the restriction on the shear deformation of the soil body, and the horizontal displacement of each layer of square rigid pipe of the box body approximately represents the horizontal displacement of the soil layer. Therefore, the deformation of the reaction soil body can be approximated by acquiring the horizontal displacement of each layer of square steel pipe of the box body.
Disclosure of Invention
The invention aims to provide a method and a device for testing horizontal large displacement of a soil body when a laminated shear model soil box with high reliability and visual displacement test is applied to an underground structure vibration table test. The defects are overcome, and the problem of measurement of large shear deformation of the soil body under the vibration condition is solved.
The purpose of the invention is realized by the following technical scheme:
a laminated shearing model box and a displacement test system comprise a laminated shearing model box 1 and a displacement test system 3, wherein the displacement test system 3 further comprises a displacement recording writing table 4, a displacement conveying device 5, a model box and displacement measuring system connecting device 6; wherein,
the displacement transmission device 5 is fixedly connected with the laminated shearing model box 1 and movably connected with the displacement recording writing table 4; the displacement recording writing table 4 and the laminated shearing model box 1 are fixedly connected through a model box and displacement measuring system connecting device 6, a square steel pipe column 2 and a square steel pipe transverse column 7.
The displacement measuring system device 3 comprises a displacement recording writing table 4, a displacement transmission device 5, a model box and a displacement measuring system connecting device 6. One end of a displacement conveying strip 16 on the displacement conveying device 5 is fixed on the square steel pipe column 2 of the laminated shearing model box, a displacement recording pen 17 at the other end of the displacement conveying strip is in contact with a displacement recording plate 14 on a displacement recording writing table 4, the displacement recording writing table 4 is fixed on a model box and displacement measuring system connecting device 6 through a writing table fixing plate 8, the bottom of the model box and displacement measuring system connecting device 6 is connected with the square steel pipe column 2 of the laminated shearing model box at the bottom, and the top of the model box and the square steel pipe cross column 7 are connected.
The displacement recording writing table 4 comprises a writing table fixing plate 8, a speed-adjustable motor 9, a motor mounting plate 10, a paper tape conveying upper roller 11, a paper tape conveying lower roller 12, a pre-adjusting conveying knob 13, a displacement recording plate 14 and a paper tape flattening and pressuring pipe 15. The writing board 14 is a writing area of the displacement recording pen 17, a writable paper tape is placed on the writing area, the speed-adjustable motor 9 drives the paper tape transmission upper roller 11 and the paper tape transmission lower roller 12 to move, the paper tape is driven to move at a constant speed through friction, and the flattening pipe 15 is flattened to ensure the flatness of the paper tape.
When the square steel pipe column 2 of each layer of the laminated shearing model box moves, the displacement transmission strips 16 and the displacement recording pens 17 on the displacement transmission device 5 are driven to move, the writable paper tape is placed on the writing board 14, the displacement recording pens 17 record the displacement motion process of the square steel pipe column 2 at a certain moment on the displacement transmission strips which are placed on the writing board 14 in advance, the speed-adjustable motor 9 drives the paper tape transmission upper roller 11 and the paper tape transmission lower roller 12 to move, the paper tape is driven to move at a constant speed through friction, the flattening pressure pipe 15 ensures the flatness of the paper tape, and the actual motion displacement process of the square steel pipe column 2 in the whole time period is recorded through the recording of the displacement recording pens 17.
The invention has the beneficial effects that:
the device overcomes the problems that a contact type displacement sensor is difficult to install and a non-contact type displacement sensor has high requirements on imaging technology and needs post data processing in a model test, approximately reflects the deformation of a soil body by acquiring the horizontal displacement of each layer of square steel tubes of the box body, records the actual dynamic change of the soil body displacement in a vibration table test more intuitively, has the characteristics of simple structure, high reliability, easy implementation and enclosure, and is expected to be applied to other similar tests.
Drawings
FIG. 1 is a schematic view of the overall assembly of a stack shear mold box and displacement test system of the present invention;
FIG. 2 is a schematic view of a displacement test system according to the present invention;
FIG. 3 is a schematic view of a displacement recording writing table according to the present invention;
FIG. 4 is a schematic view of a displacement transmissive writing pen of the present invention;
FIG. 5 is a graph of results for an embodiment of the present invention;
reference numerals:
1 laminated shearing model box 2 laminated shearing model box square steel pipe column
3 displacement test system 4 displacement record writing table
5 displacement transmission device 6 model box and displacement measurement system connecting device
7 square steel tube cross post 8 writing desk fixing plate
9 adjustable speed motor 10 motor mounting plate
11 paper tape transfer upper roller 12 paper tape transfer lower roller
13 preconditioning delivery knob 14 displacement recording plate
15 paper tape smooths pressure-relieving pipe 16 displacement transfer strip
17 displacement recording pen
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-4, the device for testing the horizontal large displacement of the soil body when the laminated shear model soil box is applied to the underground structure shaking table test comprises a laminated shear model box 1 and a displacement measurement system device 3. The parts of the laminated shear-type model box 1 used in the invention comprise a square steel pipe column 2 and a square steel pipe cross column 7.
As shown in fig. 1, 2 and 4, the displacement measuring system device 3 includes a displacement recording writing table 4, a displacement transmitting device 5, a mold box and a displacement measuring system connecting device 6. One end of a displacement conveying strip 16 on the displacement conveying device 5 is fixed on the square steel pipe column 2 of the laminated shearing model box, a displacement recording pen 17 on the other end of the displacement conveying strip is in contact with a displacement recording plate 14 on a displacement recording writing table 4, the displacement recording writing table 4 is fixed on a model box and displacement measuring system connecting device 6 through a writing table fixing plate 8, the bottom of the model box and displacement measuring system connecting device 6 is connected with the square steel pipe column 2 of the laminated shearing model box at the bottom, and the top of the model box and the square steel pipe transverse column 7 are connected.
As shown in fig. 1 and 3, the displacement recording writing desk 4 includes a writing desk fixing plate 8, a speed-adjustable motor 9, a motor mounting plate 10, a paper tape conveying upper roller 11, a paper tape conveying lower roller 12, a pre-adjusting conveying knob 13, a displacement recording plate 14, and a paper tape smoothing and pressing pipe 15. The writing board 14 is a writing area of the displacement recording pen 17, a writable paper tape is placed on the writing area, the speed-adjustable motor 9 drives the paper tape transmission upper roller 11 and the paper tape transmission lower roller 12 to move, the paper tape is driven to move at a constant speed through friction, and the flattening pipe 15 is flattened to ensure the flatness of the paper tape.
The device overcomes the problems that a contact type displacement sensor is difficult to install in a model test, a non-contact type displacement sensor has high requirements on an imaging technology and needs post data processing, records the actual dynamic change of the soil displacement in a vibration table test more intuitively, has the characteristics of simple structure, high reliability, easiness in implementation and enclosure, and is expected to be applied to other similar tests.
Under the action of sine waves, the horizontal displacement of a layer of square steel pipe of the laminated shear type model soil box measured by the displacement testing method in the description is slightly different from the displacement of the same position of the box body measured by a non-contact displacement testing method, and the displacement change trends are basically similar, so that the displacement testing method developed by self has a good testing effect, simultaneously overcomes the problems of difficult fixing of a stay wire type displacement meter and limited testing range of the non-contact displacement meter, and can be used for testing the horizontal large displacement of a soil body during the test of an underground structure vibration table.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (2)
1. Soil body level is to big displacement testing arrangement when stromatolite shearing type model soil box is applied to underground structure shaking table test, its characterized in that:
the device comprises a laminated shearing model box (1) and a displacement testing system (3), wherein the displacement testing system (3) comprises a displacement recording writing table (4), a displacement conveying device (5), a model box and a displacement measuring system connecting device (6); wherein,
the displacement transmission device (5) is fixedly connected with the laminated shearing model box (1) and movably connected with the displacement recording writing table (4); the displacement recording writing table (4) is fixedly connected with the laminated shearing model box (1) through a model box and displacement measuring system connecting device (6);
one end of a displacement conveying strip (16) on the displacement conveying device (5) is fixed on the square steel pipe column (2) of each layer of the laminated shearing model box, and the other end of the displacement conveying strip is provided with a displacement recording pen (17); the displacement recording pen (17) is in contact with a displacement recording plate (14) on the displacement recording writing table (4), the displacement recording writing table (4) is fixed on a model box and displacement measuring system connecting device (6) through a writing table fixing plate (8), the bottom of the model box and displacement measuring system connecting device (6) is connected with a square steel pipe column (2) of the bottommost laminated shear model box, and the top of the model box and the square steel pipe cross column (7) are connected;
the displacement recording writing table (4) comprises a writing table fixing plate (8), a speed-adjustable motor (9), a motor mounting plate (10), a paper tape conveying upper roller (11), a paper tape conveying lower roller (12), a pre-adjusting conveying knob (13), a displacement recording plate (14) and a paper tape flattening and pressing pipe (15); a paper tape conveying upper roller (11) and a paper tape conveying lower roller (12) are arranged at one end of the displacement recording plate (14), and a paper tape flattening and pressing pipe (15) is arranged at the other end of the displacement recording plate;
the speed-adjustable motor (9) drives the paper tape conveying upper roller (11) and the paper tape conveying lower roller (12) to move.
2. A method for applying the apparatus of claim 1, wherein:
when the square steel pipe column (2) of each layer of the laminated shearing model box moves, the displacement conveying strip (16) and the displacement recording pen (17) on the displacement conveying device (5) are driven to move, a writable paper tape is placed on the writing board (14), the displacement recording pen (17) records the displacement movement process of the square steel pipe column (2) at a certain moment on the displacement conveying strip which is placed on the writing board (14) in advance, the speed-adjustable motor (9) drives the paper tape to convey the upper roller (11) and the lower roller (12) to move, the paper tape is driven to move at a constant speed through friction, the flattening pipe (15) ensures the flatness of the paper tape, and the actual movement displacement process of the square steel pipe column (2) in the whole time period is recorded through the recording of the displacement recording pen (17).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610475579.6A CN106404323B (en) | 2016-06-25 | 2016-06-25 | Lamination shear model soil case is applied to when underground structure vibration bench test soil body horizontal to big displacement test method and device |
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| CN201610475579.6A CN106404323B (en) | 2016-06-25 | 2016-06-25 | Lamination shear model soil case is applied to when underground structure vibration bench test soil body horizontal to big displacement test method and device |
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| CN106404323B true CN106404323B (en) | 2018-08-21 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141789A (en) * | 2018-07-17 | 2019-01-04 | 同济大学 | A kind of shear model box of the adjustable natural frequency of vibration |
| CN110887745A (en) * | 2019-11-18 | 2020-03-17 | 宁波大学 | Method for measuring tangential and normal displacements of large rock mass structural plane in shear test in real time based on projection type capacitive screen |
| CN112834365B (en) * | 2021-02-24 | 2024-07-19 | 西安石油大学 | Bidirectional laminated soil shearing box for vibrating table test and use method |
| CN113465856B (en) * | 2021-08-31 | 2022-01-04 | 中国航天空气动力技术研究院 | Cabin body frequency modulation tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0066723A1 (en) * | 1981-06-04 | 1982-12-15 | Mannesmann Kienzle GmbH | Vibration device for tachograph |
| CN2161919Y (en) * | 1992-12-07 | 1994-04-13 | 哈尔滨船舶工程学院 | Electrical signal output device of mechanical vibration-testing meter |
| US5610838A (en) * | 1994-01-12 | 1997-03-11 | Canon Kabushiki Kaisha | Coordinate input device for calculating a coordinate of an input position of an applied vibration |
| JP2001331266A (en) * | 2000-05-23 | 2001-11-30 | Funai Electric Co Ltd | Coordinate inputting device |
| CN102183194A (en) * | 2011-01-26 | 2011-09-14 | 北京工业大学 | Soil body internal horizontal displacement test technology for underground structure vibration table testing |
| CN104865033A (en) * | 2015-05-15 | 2015-08-26 | 北京工业大学 | Three-directional shearing model box device |
-
2016
- 2016-06-25 CN CN201610475579.6A patent/CN106404323B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0066723A1 (en) * | 1981-06-04 | 1982-12-15 | Mannesmann Kienzle GmbH | Vibration device for tachograph |
| CN2161919Y (en) * | 1992-12-07 | 1994-04-13 | 哈尔滨船舶工程学院 | Electrical signal output device of mechanical vibration-testing meter |
| US5610838A (en) * | 1994-01-12 | 1997-03-11 | Canon Kabushiki Kaisha | Coordinate input device for calculating a coordinate of an input position of an applied vibration |
| JP2001331266A (en) * | 2000-05-23 | 2001-11-30 | Funai Electric Co Ltd | Coordinate inputting device |
| CN102183194A (en) * | 2011-01-26 | 2011-09-14 | 北京工业大学 | Soil body internal horizontal displacement test technology for underground structure vibration table testing |
| CN104865033A (en) * | 2015-05-15 | 2015-08-26 | 北京工业大学 | Three-directional shearing model box device |
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