CN106840805B - The single pile CYCLIC LOADING model assay systems of anisotropy sand sample can be prepared - Google Patents
The single pile CYCLIC LOADING model assay systems of anisotropy sand sample can be prepared Download PDFInfo
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- CN106840805B CN106840805B CN201710187540.9A CN201710187540A CN106840805B CN 106840805 B CN106840805 B CN 106840805B CN 201710187540 A CN201710187540 A CN 201710187540A CN 106840805 B CN106840805 B CN 106840805B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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Abstract
The present invention relates to the single pile CYCLIC LOADING model assay systems that one kind can prepare anisotropy sand sample, including model casing preparation facilities, single pile horizontal cyclic loading device and sliding rail, model casing preparation facilities includes model draw box mechanism, Sha Yu method mechanism and stucco mechanism, model draw box mechanism is slidably connected with sliding rail, Sha Yu method mechanism and single pile horizontal cyclic loading device are successively erected at the top of sliding rail respectively, and stucco mechanism is set in Sha Yu method mechanism.Compared with prior art, the achievable anisotropic sand of difference of the present invention is produced, and can adjust stucco height to change the compactness of sample, hopper can uniformity time saving and energy saving by mechanically actuated and guaranteeing sample during stucco；Horizontal whirl-sprayed pile in the test of single pile circulation model can be achieved accurately to control and continuous-stable output；The support frame of stucco can also be used as pile-sinking device；Sample preparation device is integrated with load testing machine, multiple functional, easy to operate.
Description
Technical field
The present invention relates to geotechnical engineering physical simulation techniques fields, can prepare anisotropy sand more particularly, to one kind
The single pile CYCLIC LOADING model assay systems of sample.
Background technique
In recent years China accelerates the paces utilized to Oversea wind power generation project development, and large diameter single pile foundation is to install letter
Just, the advantages that speed of application is fast, good economy performance becomes the highest offshore wind farm crew base shape of current marine wind electric field utilization rate
Formula, document " Doherty P, Gavin K.The shaft capacity of displacement piles in clay:A
state of the art review.International Journal of Geotechnical and Geological
Engineering, 2011,29 (4): 389-410 " points out that being completed offshore wind power foundation 75% is large diameter single pile foundation, with
The fast development of China's offshore wind farm construction, large diameter single pile foundation will be more widely used in China.
The design of large diameter single pile foundation at present substantially continues to use API specification and DNV specification etc. and is suitable for traditional minor diameter
The design method of pile foundation, to receive extensive query.Existing large diameter single Design of Foundation method seriously lags behind engineering
The contradiction of practice becomes increasingly conspicuous, therefore studies deformation characteristic of the large diameter single pile foundation under horizontal static(al) and cyclic load
It has important practical significance with mechanism.
Field test can really reflect the actual working characteristics of pile foundation, be current all research pile foundation stress and deformation
Best means in Characterization method.But it is of a high price and more difficult to the control of boundary condition due to field test, thus it is opened
The limited amount of exhibition and development are also very slowly.In addition, the horizontal whirl-sprayed pile effect that the test pile in field test is subject to
Number generally only has several hundred times, and for working normally the sea turn in the time limit by thousands of secondary Wave Loads at it
For machine pile foundation, the cycle-index of scene test pile is really very little at present.
Indoor model test is the important means of pile foundation research, and indoor model experiments mainly have the model examination under the conditions of 1g
It tests and geotechnical centrifuge test.By geotechnical centrifuge test, preferable Model Similitude can be obtained, but centrifuge tries
Higher cost is tested, and cycle-index is limited, most widely used at present is the model test under the conditions of 1g (Chang Chongli), passes through ginseng
Number nondimensionalization can establish the corresponding relationship between 1g model test and live prototype, such as document " LeBlanc C, Houlsby
G T,Byrne B W.Response of stiff piles in sand to long-term cyclic lateral
Loading.Geotechnique, 2010,60 (2): the nondimensionalization way that 79-90 " is proposed.At present about the long-term water of single pile
The loading device of flat circulation is substantially all the similar equipment developed with (2010) documents such as above-mentioned LeBanc, and the equipment is without legal system
The sand sample of standby anisotropy (different angle of deposit), and the equipment test error is larger, the degree of automation is lower.Therefore compel
Be essential and want a kind of and can prepare the single pile CYCLIC LOADING model assay systems of anisotropy sand sample, including can prepare it is uniform and
The model casing preparation facilities and precision of the different anisotropy sand foundation of compactness are high, response is fast, load is stablized and can be complete
At the single pile horizontal cyclic loading device of big figure CYCLIC LOADING.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind can prepare it is each to
The single pile CYCLIC LOADING model assay systems of anisotropic sand sample, including it is a set of can prepare uniform and changeable compactness it is each to
The model casing preparation facilities and precision of anisotropic sand foundation are high, response is fast, load stablizes and can complete big figure CYCLIC LOADING
The sand of single pile horizontal cyclic loading device, the achievable different anisotropy (angle of deposit) of model casing preparation facilities is produced, can
Stucco height is adjusted to change the compactness of sample, hopper can be time saving and energy saving by mechanically actuated during stucco and guarantees sample
Uniformity；Single pile horizontal cyclic loading device can realize that horizontal whirl-sprayed pile accurately controls and connects in the test of single pile circulation model
It is continuous to stablize output；The support frame of stucco can also be used as pile-sinking device；Sample preparation device is integrated with load testing machine, and function is neat
Entirely, easy to operate.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of single pile CYCLIC LOADING model assay systems that can prepare anisotropy sand sample, including model casing preparation
Device, single pile horizontal cyclic loading device and sliding rail, the model casing preparation facilities include: the model casing of adjustable tilt angle
Mechanism, height adjustable Sha Yu method mechanism and can horizontal reciprocating movement stucco mechanism, the model draw box mechanism and sliding rail are sliding
Dynamic connection, Sha Yu method mechanism and single pile horizontal cyclic loading device are successively erected at the top of sliding rail, the stucco respectively
Mechanism is set in Sha Yu method mechanism；
Sha Yu method mechanism changes the compactness of sample by changing the height of stucco mechanism, prepares different angle of deposit items
When anisotropy sand sample under part, Sha Yu method mechanism and cooperation driving stucco mechanism, stucco mechanism, normal sand is through sander
Structure is fallen into toward overlapping in the model draw box mechanism being obliquely installed, model draw box mechanism restore horizontal position after, using Sha Yu method mechanism as
Pile-sinking device is moved in quasi- test pile pressing in sample single pile level along sliding rail with the model draw box mechanism of quasi- test pile and follows
Below ring loading device, single pile horizontal cyclic loading device carries out horizontal cyclic load test to quasi- test pile.
The model draw box mechanism includes model box main body, is lifted component, cuts native plate and multiple extended plates, the model casing master
Body is open in cuboid shape and top surface, and the right side of model box main body uses removable side panel；
When sample preparation, the setting of model box main body initial level, and the bottom surface left side of model box main body is fixed；
Lifting component lifts the bottom surface of model box main body, so that model box main body is rotated along itself bottom surface left side, model
By the angle of deposit inclination of setting, removable side panel unloads box main body, multiple extended plates respectively with the top surface of model box main body with
Right side is spliced to form handstand, top surface opening triangle body；
Normal sand is back and forth folded through stucco mechanism and is fallen into triangle body；
After stucco mechanism works, native plate is cut along the top surface of model box main body incision triangle body, removable side panel edge
In the right side incision triangle body of model box main body；
Extended plate is unloaded, lifting component resets, and model box main body restores horizontal position, unloads incision soil plate, model box main body
The interior anisotropy sand sample formed under setting angle of deposit.
The value range of the angle of deposit set is 0-45 degree, anisotropy in the anisotropy sand sample of formation
Any angle of the angulation between 0-45 degree, for simulating due to the area that soil body depositional plane angle changes after crustal movement
Soil sample.
In sample making course, Sha Yu method mechanism adjusts the height of stucco mechanism in real time, so that the height and model of stucco mechanism
The distance of sample top surface is definite value in draw box mechanism, and stucco mechanism adjusts the distance of the reciprocating motion of itself in real time, so that stucco
The distance of the reciprocating motion of mechanism and the length of sample top surface in model draw box mechanism are consistent.
The height of stucco mechanism value range at a distance from sample top surface in model draw box mechanism is 0.2-1.4m.
Sha Yu method mechanism includes that support frame, mounting plate and vertical driving assembly, support frame as described above are erected at sliding rail
Top, the mounting plate level are set on support frame by vertical driving assembly, and the vertical driving assembly drives mounting plate edge
Vertical direction is mobile, and the stucco mechanism is set on mounting plate.
The stucco mechanism includes stucco funnel and stucco horizontal drive component, and the stucco funnel is driven by stucco level
Dynamic component is set in Sha Yu method mechanism, and the stucco horizontal drive component drives stucco funnel to move back and forth in the horizontal direction.
The stucco funnel is an integral structure, and the top of stucco funnel is in cuboid shape, and the lower part of stucco funnel is in
Vertical triangle column, the bottom end of stucco funnel are equipped with sand export, are equipped with shaking out for adjustable sand export size at the sand export
Mouth switch.
The single pile horizontal cyclic loading device include loading equipemtn frame, crossbeam, horizontal cyclic core loading device and
Control cabinet, the loading equipemtn frame are set up in orbit, and the crossbeam is set by that can move up and down bracket level set on load
On standby frame, the horizontal cyclic core loading device is set on crossbeam and connects control cabinet, horizontal cyclic core loading device
Cyclic load is applied to quasi- test pile in the horizontal direction.
The horizontal cyclic core loading device includes lead screw, servo motor, coaster, guide rail, load transducer and pile body
Clamper, the crossbeam are hollow structure, and the lead screw is parallel inside crossbeam up and down with guide rail, the servo motor connection
One end of lead screw, servo motor are equipped with rotary encoder, and the top of the coaster is connect with threads of lead screw, the middle part set of coaster
It is located on guide rail, one end of the pile body clamper is set on arse by load transducer, the servo motor, rotation
Encoder and load transducer are separately connected control cabinet.
Compared with prior art, the invention has the following advantages that
1) general model casing can not adjust angle of deposit, and model draw box mechanism of the present invention can change inclination angle, can be complete
At the preparation of soil sample under different angle of deposit, soil body difference anisotropy can be included in research range.
2) the adjustable stucco height of Sha Yu method mechanism and automatically horizontal direction move back and forth, high degree of automation, and protect
Card prepares the sample of different compactness and the uniformity of sample.Since stucco height is adjustable, it is possible to keep sample preparation
In whole process, stucco mouth and depositional plane height are constant always, guarantee the uniformity of sample.Meanwhile different height can be prepared
The sample of different compactness.And general sample preparation device not can guarantee this height it is constant.
3) compact overall structure, model box main body can relatively easily be moved loading device and stucco are inter-agency.
4) structure of single pile horizontal cyclic loading device makes it have the advantage that precision is high, response is fast, stability is good, has
The horizontal cyclic load of big figure may be implemented in displacement and load double-closed-loop control, and energy SERVO CONTROL.
5) model casing, sander, pile pressing device and loading device integration, it is easy to operate, it saves space, test efficiency
It is high.
6) stucco funnel can use sensor detecting in sample making course with the increase (soil of soil sample deposition height
Sample depositional plane length increase), constantly regulate the stucco length of stucco mouth, continue to increase it, and always with depositional plane length one
It causes.
7) the same stucco funnel, sand export size is adjustable, and control is shaked out speed, prepares different compactness and uniformly
Sample.
8) height of stucco mechanism value range at a distance from sample top surface in model draw box mechanism is 0.2-1.4m, setting
The value range of angle of deposit (i.e. tilt angle) is 0-45 degree, and anisotropy angulation is in the anisotropy sand sample of formation
Any angle between 0-45 degree, this is matched apart from value range with angle of deposit range, and the soil sample of acquisition can mould well
Intend the soil structures due to the area that soil body depositional plane angle changes after crustal movement.
Detailed description of the invention
Fig. 1 is overall structure stereoscopic schematic diagram in the present invention；
Fig. 2 is that the model draw box mechanism at adjustable inclination angle in the present invention prepares the explanatory diagram of different anisotropy samples；
Fig. 3 is single pile horizontal cyclic loading device overall structure diagram in the present invention；
Fig. 4 is the structural schematic diagram of horizontal cyclic core loading device in the present invention.
In figure: 1, single pile horizontal cyclic loading device, 2, sliding rail, 3, model draw box mechanism, 4, model box main body, 5, lifting group
Part, 6, cut native plate, 7, extended plate, 8, removable side panel, 9, support frame, 10, mounting plate, 11, stucco funnel, 12, loading equipemtn
Frame, 13, crossbeam, 14, horizontal cyclic core loading device, 15, control cabinet, 16, can move up and down bracket, 17, lead screw, 18,
Servo motor, 19, coaster, 20, guide rail, 21, load transducer, 22, pile body clamper, 23, rotary encoder, 24, pedestal,
25, screw hole, 26, bottom plate.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
As shown in Figure 1, a kind of single pile CYCLIC LOADING model assay systems that can prepare anisotropy sand sample include
Be respectively arranged on the changeable Soil Anisotropic (i.e. angle of deposit) on bottom plate 26 model casing preparation facilities, can be servo-controlled
Single pile horizontal cyclic loading device 1 and sliding rail 2, model casing preparation facilities include: adjustable tilt angle model draw box mechanism 3,
Height adjustable Sha Yu method mechanism and can horizontal reciprocating movement stucco mechanism, model draw box mechanism 3 is slidably connected with sliding rail 2,
Sha Yu method mechanism and single pile horizontal cyclic loading device 1 are successively erected at the top of sliding rail 2 respectively, and stucco mechanism is set to sand rain method
In mechanism.
Sha Yu method mechanism changes the compactness of sample by changing the height of stucco mechanism, when sample preparation, Sha Yu method mechanism
Cooperating driving stucco mechanism with stucco mechanism, normal sand is back and forth folded through stucco mechanism and is fallen into the model draw box mechanism 3 being obliquely installed,
The anisotropy sand sample under the conditions of different angle of deposit, model are prepared by changing the tilt angle of model draw box mechanism 3
After draw box mechanism 3 restores horizontal position, using Sha Yu method mechanism as pile-sinking device, by quasi- test pile pressing in sample, with quasi- survey
The model draw box mechanism 3 of test pile is moved to 1 lower section of single pile horizontal cyclic loading device, single pile horizontal cyclic loading device 1 along sliding rail 2
Horizontal cyclic load test is carried out to quasi- test pile.
In sample making course, Sha Yu method mechanism adjusts the height of stucco mechanism in real time, so that the height and model of stucco mechanism
The distance of sample top surface is definite value in draw box mechanism 3, and stucco mechanism adjusts the distance of the reciprocating motion of itself in real time, so that stucco
The distance of the reciprocating motion of mechanism and the length of sample top surface in model draw box mechanism 3 are consistent.Wherein, the height of stucco mechanism
With value range is 0.2-1.4m at a distance from sample top surface in model draw box mechanism 3, such as 0.7m, the angle of deposit of setting (incline
Rake angle) value range be 0-45 degree, such as 22 degree, anisotropy angulation is 0-45 in the anisotropy sand sample of formation
Any angle between degree, this is matched apart from value range with angle of deposit range, the soil sample of acquisition can very well simulation by
The soil structures in the area that soil body depositional plane angle changes after crustal movement.
Model draw box mechanism 3 includes model box main body 4, lifting component 5, cuts native plate 6 and multiple extended plates 7, model box main body 4
It is open in cuboid shape and top surface, model box main body 4 is by model casing pedestal 24, model casing bottom plate 26, two blocks of front and back side plate and a left side
One block of side plate of side forms, and removable side panel 8 is connect with model box main body 4, constitutes the right side of model box main body 4, extends
Plate 7 includes two rectangular-shaped inclined connection plates and four triangular baffles, and inclined connection plate passes through when model box main body 4 tilts
If bolt stem is connected with the both ends that model box main body 4 tilts, triangular baffle after inclined connection plate connects, if by bolt stem with
Inclined connection plate side and 4 side of model box main body are connected, and two pieces of the front and back side sheet room of model box main body 4 cuts soil with subsequent
Card slot needed for plate 6 and removable side panel 8, removable side panel 8 cooperate model casing main body 4 with native plate 6 is cut jointly, fill up in the soil body
It when model box main body 4, is cut along card slot on 4 inner wall of model box main body, sample is cut in completion, and lifting component 5 resists model casing pedestal
24, jack can be used.
When sample preparation, the setting of 4 initial level of model box main body, and the bottom surface left side of model box main body 4 is fixed；
Lifting component 5 lifts the bottom surface of model box main body 4, so that model box main body 4 is rotated along itself bottom surface left side, mould
By the angle of deposit inclination of setting, removable side panel 8 unloads molding box main body 4, multiple extended plates 7 respectively with model box main body 4
Top surface and right side are spliced to form handstand, top surface opening triangle body；
Normal sand is back and forth folded through stucco mechanism and is fallen into triangle body；
After stucco mechanism works, native plate 6 is cut along the top surface of model box main body 4 incision triangle body, removable side panel 8
Along the right side of model box main body 4 incision triangle body；
Extended plate 7 is unloaded, lifting component 5 resets, and model box main body 4 restores horizontal position, unloads incision soil plate 6, model casing
The anisotropy sand sample under setting angle of deposit is formed in main body 4.
Sha Yu method mechanism includes support frame 9, mounting plate 10 and vertical driving assembly, and support frame 9 is erected at the upper of sliding rail 2
Side, mounting plate 10 is horizontal to be set on support frame 9 by vertical driving assembly, and vertical driving assembly drives mounting plate 10 along vertical side
To movement, stucco mechanism is set on mounting plate 10 by track, meanwhile, mounting plate 10 can intend test pile directly as pushing
Action of the sinking of the pile face, wherein vertical driving assembly can be using the driving structure of track, sliding block and driving motor.
Stucco mechanism includes stucco funnel 11 and stucco horizontal drive component, and stucco funnel 11 passes through stucco horizontal drive group
Part is set in Sha Yu method mechanism, and stucco horizontal drive component drives stucco funnel 11 to move back and forth in the horizontal direction.Stucco funnel
11 are an integral structure, and the top of stucco funnel 11 is in cuboid shape, and the lower part of stucco funnel 11 is in the triangle column stood upside down, i.e.,
The vertical section of stucco funnel 11 is wide at the top and narrow at the bottom, and upper end is convenient to pour into sand thereto, and lower end is sand export, stucco funnel 11
Bottom end is equipped with sand export, and the sand export switch of adjustable sand export size is equipped at sand export.Stucco horizontal drive mechanism can be adopted
With the driving structure of sliding block and driving motor, driving motor can be used to control the at the uniform velocity reciprocal fortune on mounting plate 10 of stucco funnel 11
Dynamic, freely uniform stucco, avoids manually-operated loaded down with trivial details and inhomogeneities.
In the present embodiment, bottom plate 26 is with a thickness of 10mm, length 2500mm, width 1500mm.4 length of model box main body
It is highly 400mm (not including 4 pedestal 24 of model box main body) for 600mm, width 300mm.2 width of sliding rail is on bottom plate 26
300mm, it is of same size with model box main body 4.11 entire length 600mm of stucco funnel, width 200 are highly 400mm.Branch
The basic building block of support 9 is the steel pipe of 20mm wide.The overall width of support frame 9 is 600mm.10 width of mounting plate is 600mm, with
Support frame 9 is of same size.Sliding rail 2 is passed through in 9 lower part of support frame on bottom plate 26, the central axes of sliding rail 2 and 9 width direction of support frame
Central axes are overlapped.Mounting plate 10 moves up and down on support frame 9, and adjustable height range is apart from bottom surface 1-1.6m height.
As shown in Fig. 2, 3 thin portion of model draw box mechanism and relevant operation are described.Model box main body 4 can be in bottom plate 26
Free to slide on track, adjustable angle completes the preparation of soil sample under different angle of deposit, completes the preparation of soil sample, can be by model
Box main body 4 shifts single pile horizontal cyclic loading device 1 onto the following, completing relevant load test.Wherein in Fig. 2Process
For the process for preparing soil sample.The original state of model box main body 4 is such asIt is shown, after removable side panel 8 is removed, model box main body 4
One end is raised, and makes it with ground at 45 jiaos, and operating device is jack, is such as operatedInclined connection plate is connected to model box main body
4 both ends tilted, left side inclined plate length are 600mm, width 300mm, with a thickness of 10mm.The right inclined plate length is 400mm, wide
Degree is 300mm, with a thickness of 10mm, as operated in figureTriangular baffle is connected to the two of inclined connection plate and model box main body 4
Between a front and back side plate, for earth-retaining effect in soil body deposition process.Two pieces of left side set square fishplate bar both sides are 600mm, right
Two pieces of side set square fishplate bar both sides are 400mm, and four pieces of set square fishplate bar thickness are 10mm, are grasped in attended operation such as Fig. 3
MakeIn order to take out a FCL soil sample, need to cut soil sample.OperationMiddle 8 width of removable side panel is 280mm,
Height 390mm can move with a thickness of 2mm along the track groove being arranged inside model box main body 4, and cut in soil, later
The soil body for cutting native 6 upper right quarter of plate is removed again, operationIn additionally can also cut native plate 6 using one and carry out cutting soil, then again
Removable side panel 8 is inserted into this additional to cut behind native plate 6.Native plate 6 is cut on right side on the basis of completing aforesaid operations to go out
In burying, wherein it is 280mm that native 6 width of plate is cut on right side, it is highly 590mm, with a thickness of 2mm.Soil will be cut by cutting after the completion of soil operates
The remaining soil body of 6 top of plate is removed.OperationIt is to remove inclined connection plate and triangular baffle.OperationIt is to utilize jack
Model box main body 4 is put back into original position, is operatedIt is to cut native plate 6 for two to take out.
Single pile horizontal cyclic loading device 1 includes loading equipemtn frame 12, crossbeam 13, horizontal cyclic core loading device 14
With control cabinet 15, loading equipemtn frame 12 is set up in orbit, and by that can move up and down, bracket 16 is horizontal to be set to load to crossbeam 13
On device framework 12, can move up and down bracket 16 can pass through spiral shell according to the screw hole 25 being drilled on loading equipemtn frame 12
Silk is fixed on the different height on loading equipemtn frame 12, so that crossbeam 13 realizes bottom on it can move up and down bracket 16
The adjusting set, horizontal cyclic core loading device 14 are set on crossbeam 13 and connect control cabinet 15, horizontal cyclic core load dress
It sets 14 and low-frequency cyclic load is applied to quasi- test pile in the horizontal direction, have displacement and load double-closed-loop control；Adding
The numerical value of load and displacement can be returned during load in real time, and guarantees the precision and direction zero deflection of load or displacement.
Horizontal cyclic core loading device 14 includes lead screw 17, servo motor 18, coaster 19, guide rail 20, load transducer
21 and pile body clamper 22, crossbeam 13 is hollow structure, and lead screw 17 is parallel with about 20 guide rail to be set to inside crossbeam 13, and servo is electric
Machine 18 connects one end of lead screw 17, and servo motor 18 is equipped with rotary encoder 23, and the top of coaster 19 and 17 screw thread of lead screw connect
It connects, the middle part of coaster 19 is set on guide rail 20, and one end of pile body clamper 22 is set to 19 bottom of coaster by load transducer 21
In portion, 19 bottom of coaster is exposed outside crossbeam 13, and is triangle body shape, servo motor 18, rotary encoder 23 and load transducer
21 are separately connected control cabinet 15, and control cabinet 15 is the control system of entire loading device, for inputting various test parameters, than
Such as load, load path, cycle frequency, circulation time.Most of component of horizontal cyclic core loading device 14 is all
It is placed on inside crossbeam 13, to prevent the influence and erosion of external environment.
Coaster 19 can drive pile body clamper 22 to realize the horizontal loading control of single pile under the driving of servo motor 18
Or Bit andits control, lead screw 17 are that linear movement is converted in the rotary motion of servo motor 18 under the driving of servo motor 18,
To realize that the horizontal reciprocating movement of coaster 19, rotary encoder 23 can be achieved on the dress of the quick speed regulation to servo motor 18
It sets, to guarantee the accurate control to entirely testing, displacement or load are passed to coaster 19 by lead screw 17 by servo motor 18
On, coaster 19 passes to load or displacement on pile body clamper 22 again, and load transducer 21 can measure the anti-of pile body offer
Power judges whether to reach the load inputted in advance in control cabinet 15 with this, if do not reached, servo motor 18 continues to load,
If reached, motor stops load.Servo motor 18 is the power device of entire loading system.Guide rail 20 is subject to, fixes, draws
It leads, the device of movable block 19.Loading equipemtn frame 12 is the support construction of entire loading system, is made of rectangular steel tube, is added
The underrun pedestal 24 for carrying device framework 12 is fixed.Pile body clamper 22 is the component for being further applied load to single pile.
12 outer edge of loading equipemtn frame high 1200mm, wide 1200mm in the present embodiment, with a thickness of 100mm, lower portion
Size: a height of 1000mm, wide 1000mm, with a thickness of 100mm, it is highly 200mm, width is that 13 length of crossbeam, which is 900mm,
200mm。
System work process:
1) model box main body 4 is subjected to the preparation of soil sample along 9 lower section of slideway push-in support frame.Preparation process is as follows: operation4 one end side plate of model box main body is removed, operationModel box main body 4 is raised using jack, makes itself and ground angulation
It is 45 degree.Operation4 both ends of model box main body are connected into two pieces of inclined connection plates respectively.OperationIn inclined connection plate and model casing
Triangular baffle is connected between 4 side wall of main body.
2) stucco funnel 11 is adjusted to the height needed at this time, fills sand into stucco funnel 11, starting motor makes
11 horizontal reciprocating movement of stucco funnel carries out stucco operation.With the increase of sand deposition height, one layer of sand is often spread, is also wanted
11 height of stucco funnel is properly increased, guarantees that sand export and depositional plane height are constant.Aforesaid operations are repeated until by model casing
Soil is filled up in main body 4.
3) after filling up soil, continue to operateAndTwo pieces thin of native plate 6 of cutting is cut in soil, and removes the remaining soil body.
And the removable side panel 8 being inserted on master mould box main body 4 behind native plate 6 is cut on the right side of model box main body 4.Then it is operatedBy on model box main body 4 triangular baffle and inclined connection plate remove.And it completes to operateUsing jack by model casing
Main body 4 swings back original horizontal position.Finally complete operationThe thinly-sliced native plate 6 on top and side is taken out and completes the preparation of soil sample.
4) it changes stucco funnel 11 into sinking apparatus, completes pile sinking operation by adjusting sinking apparatus height.
5) the model box main body 4 for completing soil sample deposition and pile sinking operation is shifted onto single pile level along 26 sliding way of bottom plate to follow
Below ring loading device 1.
6) horizontal cyclic load test is carried out to single pile, Bit andits control or load control mode can be taken.In Bit andits control
When, the control parameters such as input displacement size, displacement curve form, load time, then drive servo motor in control cabinet 15
18, rotary encoder 23 measures the actual rotation angle of servo motor 18, and by measured value feedback to servo motor 18, servo is driven
Dynamic device carries out servo adjustment again, until reaching setting corner.At this point, the horizontal reacting force of stake is measured by load transducer 21.In lotus
When carrying control, the control parameters such as load, loading curve form, load time are inputted in control cabinet 15, then driving is watched
Motor 18 is taken, load transducer 21 measures the counter-force that pile body is subject at this time, and by measured value feedback to servo motor 18, servo is driven
Dynamic device carries out servo adjustment again, until reaching setting horizontal force.Meanwhile horizontal displacement is automatically recorded by servo motor 18.
Claims (9)
1. one kind can prepare the single pile CYCLIC LOADING model assay systems of anisotropy sand sample, including model casing preparation dress
It sets, single pile horizontal cyclic loading device (1) and sliding rail (2), which is characterized in that the model casing preparation facilities includes: adjustable
The model draw box mechanism (3) of tilt angle, height adjustable Sha Yu method mechanism and can horizontal reciprocating movement stucco mechanism, it is described
Model draw box mechanism (3) is slidably connected with sliding rail (2), Sha Yu method mechanism and single pile horizontal cyclic loading device (1) respectively according to
The secondary top for being erected at sliding rail (2), the stucco mechanism are set in Sha Yu method mechanism；
Sha Yu method mechanism changes the compactness of sample by changing the height of stucco mechanism, under the conditions of preparing different angle of deposit
Anisotropy sand sample when, Sha Yu method mechanism and cooperation driving stucco mechanism, stucco mechanism, normal sand is past through stucco mechanism
Overlapping is fallen into the model draw box mechanism (3) being obliquely installed, after model draw box mechanism (3) restores horizontal position, with Sha Yu method mechanism work
List is moved to along sliding rail (2) with the model draw box mechanism (3) of quasi- test pile by quasi- test pile pressing in sample for pile-sinking device
Below stake horizontal cyclic loading device (1), single pile horizontal cyclic loading device (1) carries out horizontal cyclic load examination to quasi- test pile
It tests；
The model draw box mechanism (3) includes model box main body (4), lifting component (5), cuts native plate (6) and multiple extended plates (7),
The model box main body (4) is open in cuboid shape and top surface, and the right side of model box main body (4) uses removable side panel (8)；
When sample preparation, the setting of model box main body (4) initial level, and the bottom surface left side of model box main body (4) is fixed；
The bottom surface of model box main body (4) is lifted in lifting component (5), so that model box main body (4) is rotated along itself bottom surface left side,
By the angle of deposit inclination of setting, removable side panel (8) unloads model box main body (4), multiple extended plates (7) respectively with model casing
The top surface and right side of main body (4) are spliced to form handstand, top surface opening triangle body；
Normal sand is back and forth folded through stucco mechanism and is fallen into triangle body；
After stucco mechanism works, native plate (6) is cut along the top surface of model box main body (4) incision triangle body, removable side panel
(8) along the right side of model box main body (4) incision triangle body；
It unloads extended plate (7), lifting component (5) resets, and model box main body (4) restores horizontal position, unloads incision soil plate (6), mould
The anisotropy sand sample under setting angle of deposit is formed in molding box main body (4).
2. the single pile CYCLIC LOADING model assay systems according to claim 1 that anisotropy sand sample can be prepared,
It is characterized in that, the value range of the angle of deposit set is 0-45 degree, in the anisotropy sand sample of formation respectively to
Any angle of the anisotropic angulation between 0-45 degree, for simulating due to the ground that soil body depositional plane angle changes after crustal movement
The soil sample in area.
3. the single pile CYCLIC LOADING model assay systems according to claim 1 that anisotropy sand sample can be prepared,
It is characterized in that, Sha Yu method mechanism adjusts the height of stucco mechanism in real time in sample making course, so that the height and mould of stucco mechanism
The distance of the interior sample top surface of molding box mechanism (3) is definite value, and stucco mechanism adjusts the distance of the reciprocating motion of itself in real time, so that
The distance of the reciprocating motion of stucco mechanism and the length of the interior sample top surface of model draw box mechanism (3) are consistent.
4. the single pile CYCLIC LOADING model assay systems according to claim 1 that anisotropy sand sample can be prepared,
It is characterized in that, the height of stucco mechanism value range at a distance from the interior sample top surface of model draw box mechanism (3) is 0.2-
1.4m。
5. the single pile CYCLIC LOADING model assay systems according to claim 1 that anisotropy sand sample can be prepared,
It is characterized in that, Sha Yu method mechanism includes support frame (9), mounting plate (10) and vertical driving assembly, support frame as described above (9)
It is erected at the top of sliding rail (2), the mounting plate (10) is horizontal to be set on support frame (9) by vertical driving assembly, described perpendicular
Straight driving assembly drives mounting plate (10) to move along the vertical direction, and the stucco mechanism is set on mounting plate (10).
6. the single pile CYCLIC LOADING model assay systems according to claim 1 that anisotropy sand sample can be prepared,
It is characterized in that, the stucco mechanism includes stucco funnel (11) and stucco horizontal drive component, the stucco funnel (11) is logical
Stucco horizontal drive component is crossed in Sha Yu method mechanism, the stucco horizontal drive component drives stucco funnel (11) along level
Direction moves back and forth.
7. the single pile CYCLIC LOADING model assay systems according to claim 6 that anisotropy sand sample can be prepared,
It is characterized in that, the stucco funnel (11) is an integral structure, the top of stucco funnel (11) is in cuboid shape, stucco funnel
(11) in the triangle column stood upside down, the bottom end of stucco funnel (11) is equipped with sand export for lower part, is equipped at the sand export adjustable
Save the sand export switch of sand export size.
8. the single pile CYCLIC LOADING model assay systems according to claim 1 that anisotropy sand sample can be prepared,
It is characterized in that, the single pile horizontal cyclic loading device (1) includes loading equipemtn frame (12), crossbeam (13), horizontal cyclic
Core loading device (14) and control cabinet (15), the loading equipemtn frame (12) set up in orbit, and the crossbeam (13) is logical
Bracket (16) level can be moved up and down by, which crossing, is set on loading equipemtn frame (12), and the horizontal cyclic core loading device (14) sets
In on crossbeam (13) and connecting control cabinet (15), horizontal cyclic core loading device (14) in the horizontal direction applies quasi- test pile
Add cyclic load.
9. the single pile CYCLIC LOADING model assay systems according to claim 8 that anisotropy sand sample can be prepared,
It is characterized in that, the horizontal cyclic core loading device (14) includes lead screw (17), servo motor (18), coaster (19), leads
Rail (20), load transducer (21) and pile body clamper (22), the crossbeam (13) are hollow structure, the lead screw (17) and are led
Rail (20) is set to crossbeam (13) inside, one end of servo motor (18) connection lead screw (17), servo motor in parallel up and down
(18) rotary encoder (23) are equipped with, the top of the coaster (19) is threadedly coupled with lead screw (17), the middle part of coaster (19)
It is set on guide rail (20), one end of the pile body clamper (22) is set to coaster (19) bottom by load transducer (21)
On, the servo motor (18), rotary encoder (23) and load transducer (21) are separately connected control cabinet (15).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000292A (en) * | 2006-12-15 | 2007-07-18 | 清华大学 | Large 3D multifunction soil tester |
| CN103278612A (en) * | 2013-04-26 | 2013-09-04 | 上海交通大学 | Sand rain-type filling device for geotechnical engineering model test |
| CN204731129U (en) * | 2015-04-20 | 2015-10-28 | 温州大学 | Any deposition direction sand device for testing permeability coefficient |
| CN105092331A (en) * | 2015-08-19 | 2015-11-25 | 东北电力大学 | Full-automatic reciprocating sand sample preparing instrument |
| CN204924779U (en) * | 2015-09-01 | 2015-12-30 | 东莞市德思环境仪器有限公司 | A proof box for high accelerated life test and stress screening test |
-
2017
- 2017-03-27 CN CN201710187540.9A patent/CN106840805B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000292A (en) * | 2006-12-15 | 2007-07-18 | 清华大学 | Large 3D multifunction soil tester |
| CN103278612A (en) * | 2013-04-26 | 2013-09-04 | 上海交通大学 | Sand rain-type filling device for geotechnical engineering model test |
| CN204731129U (en) * | 2015-04-20 | 2015-10-28 | 温州大学 | Any deposition direction sand device for testing permeability coefficient |
| CN105092331A (en) * | 2015-08-19 | 2015-11-25 | 东北电力大学 | Full-automatic reciprocating sand sample preparing instrument |
| CN204924779U (en) * | 2015-09-01 | 2015-12-30 | 东莞市德思环境仪器有限公司 | A proof box for high accelerated life test and stress screening test |
Non-Patent Citations (3)
| Title |
|---|
| Centrifuge modelling of mono-pile under cyclic lateral loads;Z. Li等;《7th International Conference on Physical Modelling in Geotechnics》;20101231;第2卷;全文 * |
| 单桩水平承载力离心模型试验研究;赵守正;《中国优秀硕士学位论文全文数据库 工程科技II辑》;20130915(第9期);摘要，第16，24-27页，第33-37页 * |
| 黏土中两种不同直径单桩水平循环加载模型试验与分析;俞剑等;《岩土力学》;20160430;第37卷(第4期);全文 * |
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