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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- 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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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 technical field of civil engineering, it is related to a kind of lamination shear model soil case and shakes applied to underground structure
Soil body horizontal is to big displacement test method and device when dynamic platform experiment.
Background technology
Large-scale urban rail transit construction makes Metro Station Structure unavoidably pass through liquefiable soil layer.80 years 20th century
Since generation, think that a large amount of works such as house, bridge, dykes and dams, underground structure in earthquake are serious by a series of seimic disaster census
The main reason for destruction is lateral big displacement caused by liquefaction of soil mass, and the only deformation caused by liquefaction is enough to endanger building peace
It just causes damages when complete or normal use, therefore the core of Liquefaction research is development of deformation process.Large ground displacement is to knot
The research of this project of the destruction of structure gradually causes extensive attention in world ground antiseismic engineering field.It is set from domestic and international antidetonation
The development of meter method can be seen that the Aseismic Design guiding theory of underground structure, also gradually develop from traditional intensity differentiation
To the design principle (response displacement method) of Deformation control, soil deformation analysis is increasingly taken seriously.
Most of method for measurement of stress value are from substantially saying it is all measuring deformation values in experiment, and the measurement ratio deformed is answered
The measurement of power is more intuitive, easily utilizes Strain Distribution to release stress distribution according to the constitutive relation of material, therefore deform
Measurement occupy highly important position in model test.
But due to relatively lagging behind for measuring technique, in the dynamic test of soil, especially in the large-scale vibrating of underground structure
In platform experiment, the test of native displacement is a problem to be solved always.
Contact type measurement needs test equipment to be fixed or is adjacent on institute's geodesic structure surface, this brings perhaps to practical application
It is mostly difficult to install, such as currently used guy type displacement meter；Untouchable displacement measurement technology is surveyed as a new class of displacement
Method for testing has measuring accuracy high and can effectively eliminate due to connecing compared with Typical physical or mechanical displacement test method
Touch and generate displacement measurement error the advantages that, but it is limited there are test point position and testing range the shortcomings of, such as laser position
Move measuring technology.Scholar has carried out the photo using optical camera acquisition in recent years, dynamic video combination later image is handled
Globalization, the research of automation displacement measurement technology, this method is more demanding to camera work, also has to post-processing technique
Certain requirement is limited when considering larger displacement.
It is existing research shows that:Lamination shear model soil case can effectively reduce the constraint shear-deformable to the soil body, babinet
The horizontal displacement of soil layer where the horizontal displacement approximation of each layer Fang Gangguan represents.It therefore, can be by obtaining each layer side of babinet
The horizontal position in-migration approximate reverse of steel pipe answers the deformation of the soil body.
Invention content
The purpose of the present invention is to provide a kind of reliability height, the visual lamination shear model soil case of displacement measurement is answered
Soil body horizontal is to big displacement test method and device when for underground structure vibration bench test.Overcome the shortcomings of above-mentioned, solves to shake
The measurement problem of soil body shearing large deformation under the conditions of dynamic.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of lamination shear model box and displacement test system, including lamination shear model box 1, displacement test system 3, institute
It further includes that displacement record writing counter 4, displacement transmission device 5, model casing connect dress with displacement measurement system to state displacement test system 3
Set 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 and lamination shear model box 1 are sheared by model casing and displacement measurement system attachment device 6 by lamination
Model casing square bar tubing string 2 is fixedly connected with rectangular steel tube spreader 7.
The displacement measurement system device 3 includes displacement record writing counter 4, displacement transmission device 5, model casing and displacement
Examining system attachment device 6.Wherein, 16 one end of displacement transfer bar is fixed on lamination shear model box square on displacement transmission device 5
On steel pipe column 2, other end displacement record pen 17 is contacted with the displacement record plate 14 on displacement record writing counter 4, displacement record book
It writes platform 4 to be fixed on model casing and displacement measurement system attachment device 6 by writing counter fixed plate 8, model casing and displacement measure
6 bottom of arrangement for connecting system is connected with lowermost end lamination shear model box square bar tubing string 2,7 phase of top and rectangular steel tube spreader
Even.
The displacement record writing counter 4 includes writing counter fixed plate 8, adjustable speed motor 9, motor mounting plate 10, paper tape biography
It serves roller bearing 11, the lower roller bearing 12 of paper tape transmission, preconditioning conveying knob 13, displacement record plate 14, paper tape and smooths suppression pipe 15.
Clipboard 14 be displacement meter record pen 17 write region, be placed above can writing paper band, adjustable speed motor 9 drive paper tape transmission on
Roller bearing 11 and the lower roller bearing 12 of paper tape transmission move, and the uniform motion of paper tape is driven by friction, suppression pipe 15 is smoothed and ensures paper tape
It is smooth.
When each layer of square steel pipe column 2 of lamination shear model box moves, displacement transmission on displacement transmission device 5 is driven
The movement of item 16 and displacement record pen 17, due to clipboard 14 be placed above can writing paper band, displacement record pen 17 just will be a certain
On the displacement transfer bar that the displacement movement process record of moment square steel pipe column 2 is pre-placed on clipboard 14, due to adjustable
Speed motor 9 drives the upper roller bearing 11 of paper tape transmission and the lower roller bearing 12 of paper tape transmission to move, and drives paper tape that it is made at the uniform velocity to transport by friction
It is dynamic, and have and smooth the smooth of the suppression guarantee paper tape of pipe 15, when by the record of displacement record pen 17 that square steel pipe column 2 is entire
Between the actual motion displacement process of section record.
The beneficial effects of the present invention are：
The device overcomes that tangent displacement sensor in model test is difficult to install and non-contact displacement transducer pair
The problem of imaging technique requires height and later data is needed to handle, it is close by the horizontal position in-migration for obtaining each layer square steel tube of babinet
Like reaction the soil body deformation, more intuitively record shaketalle test in land movement practical dynamic change, have it is simple in structure,
Reliability is high, easy to implement and the characteristics of go along with sb. to guard him, it is expected to be applied in other similar experiments.
Description of the drawings
Fig. 1 is a kind of lamination shear model box of the present invention and displacement test system entirety assembling schematic diagram；
Fig. 2 is a kind of displacement test system overall schematic of the present invention；
Fig. 3 is a kind of displacement record writing counter schematic diagram of the present invention；
Fig. 4 is a kind of displacement transmission lettering pen schematic diagram of the present invention；
Fig. 5 is result figure of the embodiment of the present invention；
Reference numeral：
1 lamination shear model box, 2 lamination shear model box square steel pipe column
3 displacement test system, 4 displacement record writing counter
5 displacement transmission device, 6 model casing and displacement measurement system attachment device
7 rectangular steel tube spreader, 8 writing counter fixed plate
9 adjustable speed motor, 10 motor mounting plate
The lower roller bearing of 11 paper tapes transmission, 12 paper tape of upper roller bearing transmission
13 preconditioning conveying 14 displacement record plates of knob
15 paper tapes smooth suppression 16 displacement transfer bar of pipe
17 displacement record pens
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described further.
As shown in Figs 1-4, lamination shear model soil case is applied to when underground structure vibration bench test soil body horizontal to big
Displacement tester, including lamination shearing shape model casing 1 and displacement measurement system device 3.Lamination shearing shape model casing 1 is sent out herein
The position used in bright includes square bar tubing string 2 and rectangular steel tube spreader 7.
As shown in Figure 1, Figure 2 and Figure 4, displacement measurement system device 3 includes displacement record writing counter 4, displacement transmission device
5, model casing and displacement measurement system attachment device 6.Wherein, on displacement transmission device 5 16 one end of displacement transfer bar be fixed on it is folded
On layer shear model box square steel pipe column 2, other end displacement record pen 17 and the displacement record plate on displacement record writing counter 4
14 contacts, displacement record writing counter 4 are fixed on by writing counter fixed plate 8 on model casing and displacement measurement system attachment device 6,
Model casing and 6 bottom of displacement measurement system attachment device are connected with lowermost end lamination shear model box square bar tubing string 2, top and
Rectangular steel tube spreader 7 is connected.
As shown in figures 1 and 3, displacement record writing counter 4 includes writing counter fixed plate 8, adjustable speed motor 9, motor installation
Plate 10, the upper roller bearing 11 of paper tape transmission, the lower roller bearing 12 of paper tape transmission, preconditioning conveying knob 13, displacement record plate 14, paper tape smooth
Suppress pipe 15.Clipboard 14 be displacement meter record pen 17 write region, be placed above can writing paper band, adjustable speed motor 9 drive paper
The upper roller bearing 11 of band transmission and the lower roller bearing 12 of paper tape transmission move, and the uniform motion of paper tape is driven by friction, smooths suppression pipe 15
Ensure the smooth of paper tape.
The device overcomes that tangent displacement sensor in model test is difficult to install and non-contact displacement transducer pair
The problem of imaging technique requires height and later data is needed to handle, more intuitively records the reality of land movement in shaketalle test
Border dynamic change, has simple in structure, and reliability is high, easy to implement and the characteristics of go along with sb. to guard him, it is expected in other similar experiments
With application.
Under sine wave effect, the lamination shear model soil case layer side that is measured using displacement measurement method in this explanation
The horizontal displacement of steel pipe measures the displacement at babinet same position, only in size with using contactless displacement test method
In the presence of slightly difference, change in displacement trend is substantially similar, illustrates that there is the displacement measurement method voluntarily researched and developed preferable test to imitate
Fruit, while overcoming guy type displacement meter and fixing the limited problem of difficult and contactless displacement meter testing range, it can be used for
Soil body horizontal is tested to big displacement when underground structure vibration bench test.
Last should be noted that above example is only to illustrate technical solution of the present invention and unrestricted, although joining
It is described the invention in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to the present invention
Technical solution modify or equivalent substitute, without departing from the spirit of the technical scheme of the invention and range, should all cover
In invention right.
Claims (2)
1. lamination shear model soil case is applied to when underground structure vibration bench test soil body horizontal to big displacement test device,
It is characterized in that：
Including lamination shear model box (1), displacement test system (3), the displacement test system (3) includes that displacement record is write
Platform (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), even with displacement record writing counter (4) activity
It connects；Displacement record writing counter (4) is solid by model casing and displacement measurement system attachment device (6) and lamination shear model box (1)
Fixed connection；
Displacement transfer bar (16) one end is fixed on the square steel of each layer of lamination shear model box on the displacement transmission device (5)
On tubing string (2), the other end is equipped with displacement record pen (17)；Displacement record pen (17) and the displacement on displacement record writing counter (4)
Data board (14) contacts, and displacement record writing counter (4) is fixed on model casing and displacement measurement system by writing counter fixed plate (8)
In attachment device (6), model casing and displacement measurement system attachment device (6) bottom and lowermost end lamination shear model box square bar
Tubing string (2) is connected, and top is connected with rectangular steel tube spreader (7)；
The displacement record writing counter (4) includes writing counter fixed plate (8), adjustable speed motor (9), motor mounting plate (10), paper
The upper roller bearing (11) of band transmission, the lower roller bearing (12) of paper tape transmission, preconditioning conveying knob (13), displacement record plate (14), paper tape are comforted
Flat suppression pipe (15)；Displacement record plate (14) one end is placed with the upper roller bearing (11) of paper tape transmission and the lower roller bearing (12) of paper tape transmission,
The other end is provided with paper tape and smooths suppression pipe (15)；
Adjustable speed motor (9) the driving paper tape transmission above roller bearing (11) and lower roller bearing (12) movement of paper tape transmission.
2. the method for application device as described in claim 1, it is characterised in that：
When each layer of square steel pipe column (2) of lamination shear model box moves, displacement transmission on displacement transmission device (5) is driven
The movement of item (16) and displacement record pen (17), due to clipboard (14) be placed above can writing paper band, displacement record pen (17)
Just the displacement transfer bar displacement movement process record of a certain moment square steel pipe column (2) being pre-placed on clipboard (14)
On, since adjustable speed motor (9) drives the upper roller bearing (11) of paper tape transmission and lower roller bearing (12) movement of paper tape transmission, pass through the band that rubs
Dynamic paper tape makes its uniform motion, and has and smooth the smooth of suppression pipe (15) guarantee paper tape, passes through the record of displacement record pen (17)
The actual motion displacement process of square steel pipe column (2) entire period is recorded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN106404323A CN106404323A (en) | 2017-02-15 |
| 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 |
| CN112834365A (en) * | 2021-02-24 | 2021-05-25 | 西安石油大学 | Bidirectional laminated shear soil box for vibration table test and using 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 |
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| 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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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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