CN207894743U - Vibrator and sound state triaxial test system - Google Patents

Abstract

A kind of vibrator and sound state triaxial test system belong to coarse-grained soil experiment field, and vibrator includes mounting base and force piece, and force piece is oil cylinder, and the cylinder barrel of oil cylinder is fixedly connected on mounting base, and the piston rod of oil cylinder can be relative to cylinder barrel straight reciprocating.This sound state triaxial test system, for testing unsaturation coarse-grained soil comprising above-mentioned vibrator, vibrator are used to apply load to unsaturation coarse-grained soil.This vibrator and sound state triaxial test system all have it is simple in structure, the characteristics of the operation is stable.

Description

Vibrator and sound state triaxial test system

Technical field

The utility model is related to coarse-grained soils to test field, in particular to a kind of vibrator and sound state triaxial test System.

Background technology

The experiment of unsaturation coarse-grained soil is widely used in water conservancy, electric power, metallurgy, mine, geology, large-scale civil building, mountain The teaching research of ground disaster, engineering investigation design studies department and institution of higher learning works.It is also applied to large-scale dam, high speed simultaneously In highway subgrade, high ferro railway slope, metallurgical mine, building prospective design, resource environment and earthquake research department, earthquake is carried out Analog study.Vibrator is one of the capital equipment for constituting coarse-grained soil pilot system.

But there is complicated, the defect of job insecurity in existing vibrator mostly.

Utility model content

The purpose of this utility model is to provide a kind of vibrator, with simple in structure, the characteristics of the operation is stable.

The another object of the utility model is to provide a kind of sound state triaxial test system, with simple in structure, work Make stable feature.

What the embodiments of the present invention were realized in：

A kind of vibrator comprising mounting base and force piece, force piece are oil cylinder, and the cylinder barrel of oil cylinder is fixedly connected on installation Seat, the piston rod of oil cylinder can be relative to cylinder barrel straight reciprocating.

Further, in the utility model preferred embodiment, oil cylinder is the low frictional resistance sealing fluid pressure oil of two-way double acting Cylinder.

Further, in the utility model preferred embodiment, mounting base is cylindrical, and cylinder barrel is in the form of annular discs and edge It is fixedly connected on one end of mounting base, the piston rod runs through the mounting base and both ends are located at outside the mounting base.

Further, in the utility model preferred embodiment, vibrator further includes dust cover, and dust cover covers oil cylinder Position outside mounting base, piston rod is located at one end outside mounting base can be in dust cover energy straight reciprocating.

Further, in the utility model preferred embodiment, displacement meter, the both ends of displacement meter are provided in dust cover It is located at one end outside mounting base with the one end of dust cover far from mounting base and piston cylinder respectively to connect.

Further, in the utility model preferred embodiment, displacement is calculated as magnetostrictive displacement sensor.

Further, in the utility model preferred embodiment, the one end of dust cover far from mounting base is detachably connected There are mounting head, the one end of displacement meter far from piston cylinder to be removably connected to mounting head.

Further, in the utility model preferred embodiment, mounting head is threadedly connected to dust cover.

Further, in the utility model preferred embodiment, dust cover, cylinder barrel and mounting base are connected by multiple screws It connects, multiple screws are arranged along the circumferencial direction interval of cylinder barrel, and the outer wall of dust cover is pushed down on the head of each screw, and screw rod is worn successively It is locked in mounting base after crossing dust cover and cylinder barrel.

A kind of sound state triaxial test system, for testing unsaturation coarse-grained soil comprising above-mentioned vibrator, Vibrator is used to apply load to unsaturation coarse-grained soil.

The advantageous effect of the utility model embodiment is：

This vibrator includes mounting base and force piece, and force piece is oil cylinder, and the cylinder barrel of oil cylinder is fixedly connected on mounting base, oil The piston rod of cylinder can be relative to cylinder barrel straight reciprocating.This vibrator has the characteristics of simple in structure, the operation is stable.

This sound state triaxial test system, for testing unsaturation coarse-grained soil comprising above-mentioned vibrator swashs The device that shakes is used to apply load to unsaturation coarse-grained soil.This sound state triaxial test system has simple in structure, the spy of the operation is stable Point.

Description of the drawings

It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the structural schematic diagram for the sound state triaxial test system that the utility model embodiment provides；

Fig. 2 is the structural schematic diagram for the vibrator that the utility model embodiment provides；

Fig. 3 is the connection diagram that the balancing gate pit that the utility model embodiment provides and ectosome become measuring device；

Fig. 4 is the internal structure schematic diagram for the balancing gate pit that the utility model embodiment provides；

Fig. 5 is the portions the A enlarged drawing of Fig. 4；

Fig. 6 is the portions the B enlarged drawing of Fig. 4；

Fig. 7 is the structural schematic diagram for the outer layer oil sources that the utility model embodiment provides；

Fig. 8 is the structural schematic diagram that the balancing gate pit that the utility model embodiment provides and inner body become measuring device.

Icon：100- sound state triaxial test systems；200- main machine structures；210- upper beams；220- underbeams；230- Column；300- vibrators；310- mounting bases；320- force pieces；330- seal closures；340- displacement meters；The balancing gate pits 400-； 410- upper brackets；420- undersettings；430- outer walls；440- inner layer walls；431- outer layer water cavities；The inner cavities 441-；451- Confining pressure water cavity；460- load applies axis；470- self-balancing water vats；480- structure of voltage regulation；481- pistons；482- epicoeles； 483- cavity of resorptions；484- runners；500- ectosomes become measuring device；510- outer layers water source；511- measures fluid cylinder；512- power Device；520- confining pressures water source；600- inner bodies become measuring device；610- pore pressures water source；620- back-pressures water source；630- pressure Sensor；640- is saturated water tank；650- vacuum pumps；700- pottery clay plates.

Specific implementation mode

It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all Belong to the range of the utility model protection.

It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.

It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or The utility model product using when the orientation or positional relationship usually put, be merely for convenience of description the utility model and letter Change description, do not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and Operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " etc. are only used for area Divide description, is not understood to indicate or imply relative importance.

In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly Low dip.It is not to indicate that the structure has been had to if "horizontal" refers to only that its direction is more horizontal with respect to for "vertical" It is complete horizontal, but can be slightly tilted.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, Or it is integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition Solve the concrete meaning of above-mentioned term in the present invention.

Fig. 1 is please referred to, a kind of sound state triaxial test system 100 is present embodiments provided, is used for coarse grain earth sample It is tested, to obtain the various performance parameters of coarse grain earth sample.This sound state triaxial test system 100 includes main machine structure 200, vibrator 300, balancing gate pit 400, body become measuring device and control system.Vibrator 300 and balancing gate pit 400 are installed on host Structure 200, vibrator 300 are used to apply load to coarse-grained soil, and balancing gate pit 400 is for placing coarse grain earth sample to be tested, body Become measuring device and be used to measure volume change of the coarse grain earth sample under the load effect of vibrator 300, control system is for controlling Vibrator 300 and body processed become the automatic running of measuring device.

Wherein, main machine structure 200 includes upper beam 210, underbeam 220 and four columns 230, the both ends point of each column 230 It is not connected to upper beam 210 and underbeam 220, to form the frame structure for being substantially in cuboid.

Fig. 2 is please referred to, vibrator 300 is set to upper beam 210.Various structure types, this implementation may be used in vibrator 300 In example, vibrator 300 may include mounting base 310 and force piece 320.Mounting base 310 is cylindrical and runs through upper beam 210, peace Dress seat 310 is fixedly connected on upper beam 210 and bottom is concordant with the lower surface of upper beam 210, and top is higher than the upper surface of upper beam 210.

Force piece 320 is oil cylinder, and optionally, oil cylinder is the low frictional resistance sealed hydraulic oil cylinder of two-way double acting.The cylinder barrel of oil cylinder In the form of annular discs and axis is overlapped with the axis of mounting base 310, and the edge of cylinder barrel is fixedly connected on one end of mounting base 310, oil cylinder Piston rod can be relative to cylinder barrel straight reciprocating, piston rod is located at through mounting base 310 and both ends outside mounting base 310, Middle one end is stretched into balancing gate pit 400.

Dust enters oil cylinder in order to prevent, influences the normal work of oil cylinder, and in the present embodiment, vibrator 300 further includes preventing Dust hood, dust cover are substantially in ladder shaft-like and are hollow shell structure comprising integrally formed large diameter portion and small diameter portion, wherein Large-diameter portion is connected to upper beam 210 and covers the position that mounting base 310 is higher by the upper surface of upper beam 210, and small diameter portion then covers oil cylinder Position outside mounting base 310.Piston rod is located at one end outside mounting base 310 can be in dust cover energy straight reciprocating.

In order to accurately measure the displacement distance of piston rod, displacement meter 340, displacement meter 340 and control are provided in dust cover System is electrically connected.Displacement meter 340 may be used various structure types, and in the present embodiment, displacement meter 340 is that magnetostrictive displacement passes Sensor.The both ends of displacement meter 340 are located at one outside mounting base 310 with the one end of dust cover far from mounting base 310 and oil cylinder respectively End connection.In this way, when piston rod is moved relative to cylinder barrel, displacement meter 340 can detect the shift value of piston rod, and will It feeds back to control system, so that control system carries out relevant calculating.

In order to facilitate the installation and removal of displacement meter 340, the one end of dust cover far from mounting base 310 is removably connected with peace Fill head.The mode being detachably connected has very much, and in the present embodiment, mounting head is threadedly connected to dust cover.Displacement meter 340 is far from living The one end for filling in 481 cylinders is removably connected to mounting head.

In the present embodiment, dust cover, cylinder barrel and mounting base 310 can be connected by multiple screws, and multiple screws are along cylinder barrel Circumferencial direction interval setting, the outer wall of dust cover is pushed down on the head of each screw, after screw rod sequentially passes through dust cover and cylinder barrel It locks in mounting base 310.

Fig. 3-4 is please referred to, balancing gate pit 400 is located at the cavity that upper beam 210, underbeam 220 and four columns 230 surround jointly It is interior.Balancing gate pit 400 may be used various structure types, in the present embodiment, balancing gate pit 400 include upper bracket 410, undersetting 420, Outer wall 430 and inner layer wall 440.

Wherein, outer wall 430 is made of rigid material, and inner layer wall 440 is fabricated from a flexible material, optionally, inner layer wall 440 It is made of stainless steel material.The thickness of stainless steel structure is 3-5 millimeters, so that it is not only had preferable rust-preventing characteristic, and have Appropriate elasticity.Outer wall 430 and inner layer wall 440 are all connected between upper bracket 410 and undersetting 420, and inner layer wall 440 is located at Within outer wall 430, outer layer water cavity 431 is formed between outer wall 430 and inner layer wall 440.Inner layer wall 440 is for placing coarse-grained soil Sample can form confining pressure water cavity 451 between inner layer wall 440 and coarse-grained soil.

Upper bracket 410 and undersetting 420 are in the form of annular discs, and upper bracket 410 is located at the top of undersetting 420.Upper bracket 410 It is provided with load and applies axis 460 and self-balancing water vat 470, it can be individually part and to be stretched with piston rod that load, which applies axis 460, Enter one end connection of balancing gate pit 400, or piston rod itself.Load applies axis 460 through self-balancing water vat 470 and separate One end of cylinder barrel resists coarse grain earth sample.Self-balancing water vat 470 is used to assist holding outer layer water cavity 431 and confining pressure water cavity 451 Pressure balance.Piston 481 is provided in self-balancing water vat 470, piston 481 is fixedly connected on load and applies axis 460 and the two axis Line overlaps, and self-balancing horizontal is divided into epicoele 482 and cavity of resorption 483 by piston 481, epicoele 482 and cavity of resorption 483 respectively with outer layer water Chamber 431 is connected to.

In order to expand flow area, ensure that the flow velocity of liquid, the side wall of self-balancing water vat 470 are provided with multiple runners 484, 484 one end of multiple runners is connected to epicoele 482 and cavity of resorption 483 respectively, and the other end is connected to outer layer water cavity 431 respectively.

In order to improve the sealing performance of piston 481, in the present embodiment, piston 481 is provided with sealing ring, optionally, piston 481 circumferential surface is provided with annular mounting groove, and sealing ring is arranged and the circumferential surface and self-balancing in annular mounting groove and positioned at piston 481 Between the inner wall of water vat 470, to which the leakproofness between the circumferential surface of piston 481 and the inner wall of self-balancing water vat 470 be effectively ensured.

In order to improve the Self-balancing of self-balancing water vat 470, pressure compensation is both provided in epicoele 482 and cavity of resorption 483 Part, pressure compensation member can when the pressure in epicoele 482 and cavity of resorption 483 increases absorption pressure and in epicoele 482 and cavity of resorption 483 Pressure reduce when release stress.Pressure compensation member may be used various structures and form, and in the present embodiment, pressure compensation member is Bag type accumulator or air spring.

The operation principle and process of this self-balancing water vat 470 are such：

When vibrator 300 works, piston 481 moves downward under the driving of piston rod, the water in compression pressure room 400 Pressure can cause the pressure rise of confining pressure water cavity 451, while the water that cavity of resorption 483 is flowed out passes through runner 484 and outer layer water cavity 431 After flow to epicoele 482, to reach the purpose and effect of automatic compensating pressure.When reversed, piston 481 moves upwards, epicoele 482 Water cavity of resorption 483 is then flowed to by runner 484, this can eliminate when impulsing piston 481 it is mobile in balancing gate pit 400 caused by pressure Power changes.Two chambers are provided with bag type accumulator or air spring up and down simultaneously, are generated when impulsing so as to assist absorption Pressure pulsation, then the automatic voltage regulation function at confining pressure water source 520 is coordinated to ensure that 520 pressure stability of confining pressure water source, can reached To preferable confining pressure balance and stability function.

It is hydraulically full in self-balancing cylinder, the specific location of self-balancing the cylinder piston 481 can be monitored in real time with displacement meter 340, After self-balancing cylinder can be calculated with axially loaded exciting, the distance that piston 481 moves up and down can also calculate work Fill in influence of 481 dynamic volumes to 400 volume of balancing gate pit.Due to the mutual unicom of two chamber of self-balancing cylinder, the automatic alternate cycles of liquid, Two chambers are respectively furnished with the bag type accumulator or air spring of an appropriate volume simultaneously, and piston 481 when load exciting can be made to pass in and out Caused by confining pressure change and compensated automatically, pressure change can be effectively reduced, the stabilization for 451 pressure of confining pressure water cavity has provided Sharp condition.

It includes that ectosome becomes measuring device 500 and inner body change measuring device 600 that body, which becomes measuring device,.Fig. 5-7 is please referred to, outside Body becomes the variation that measuring device 500 is used to measure external volume of the coarse grain earth sample under the load effect of vibrator 300.Ectosome It includes pressure sensor 630, outer layer water source 510 and confining pressure water source 520 to become measuring device 500, and outer layer water source 510 is used for outer layers Water cavity 431 inputs liquid, and confining pressure water source 520 is used to input liquid to confining pressure water cavity 451.

Pressure sensor 630 is used to measure the pressure at outer layer water source 510 and confining pressure water source 520, and pressure sensor 630 It is electrically connected with control system.Outer layer water source 510 and confining pressure water source 520 include measuring fluid cylinder 511 and for that will measure fluid cylinder The dynamic structure of outer layer water cavity 431 and confining pressure water cavity 451 is stated in liquid injection in 511, and dynamic structure is electrically connected with control system. The pressure of outer layer water cavity 431 and confining pressure water cavity 451 is monitored by pressure sensor 630, and power is controlled by control system The liquid of outer layer water cavity 431 and confining pressure water cavity 451 is stated in the liquid injection measured in fluid cylinder 511 by structural adjustment, just can be to outer layer The pressure of water cavity 431 and confining pressure water cavity 451 is specifically adjusted, and the two is made to be in equilibrium state always.

This ectosome become measuring device 500 operation principle be：

Sample to be tested is placed in the inner cavity 441 of balancing gate pit 400, ectosome becomes measuring device 500 and passes through confining pressure water source 520 with the cooperating at outer layer water source 510 to ensure the pressure balance of outer layer water cavity 431 and confining pressure water cavity 451.

Later, after the pressure balance of outer layer water cavity 431 and confining pressure water cavity 451, axis 460 is applied by load and is existed to setting Sample in inner cavity 441 applies pressure and load, during sample bears pressure and load, by pressure compensation member and certainly The cooperating of water vat 470 is balanced, plays the role of compensating automatically when pressure change caused by capable of passing in and out in piston 481, can have Effect reduces pressure change, plays preferable pressure balance stabilization function, further ensures that the pressure stability in confining pressure water cavity 451, Stablize confining pressure for 520 control system final adjustment of confining pressure water source and provides advantage.

Then, if the variation of volume occurs for sample in inner cavity 441, due to outer layer water cavity 431 and confining pressure water cavity 451 it Between be in pressure balanced state, and due to the volume change of sample, the volume of inner cavity 441 will be caused to change, thus enclosed In the case of pressing the pressure of water cavity 451 constant, since the variation variation that volume occurs for sample causes through confining pressure water source 520 to confining pressure Water filling volume change in water cavity 451, from there through the variation of water filling volume of the confining pressure water source 520 into confining pressure water cavity 451, with And the data measured by displacement meter 340 just more can accurately calculate sample it is load bearing in the case of body variable.Therefore it should Ectosome, which becomes measuring device 500, can directly measure the volume of sample variation that coarse-grained soil sample exterior compression (rising with cutting) occurs afterwards.

Please refer to Fig. 8, it is interior become fluid measurement device be used to measure coarse grain earth sample under the load effect of vibrator 300 in The variation of portion's volume.Inner body become measuring device 600 include pore pressure water source 610 and back-pressure water source 620, pore pressure water source 610 be used for The bottom input liquid of coarse grain earth sample, back-pressure water source 620 are used for the bottom input liquid to coarse grain earth sample.The two it is specific Structure is referred to the structure at outer layer water source 510 and confining pressure water source 520, and details are not described herein again.

During test, coarse-grained soil is placed in the inner cavity 441 of balancing gate pit 400, and pore pressure water source 610 is used for by pressure The bottom of room 400 inputs liquid to pottery clay plates 700, and back-pressure water source 620 is used to input liquid to the top of coarse grain earth sample, thus By pore pressure water source 610 and the cooperating at back-pressure water source 620, just the top of the coarse grain earth sample in balancing gate pit 400 can be pressed Power and the pressure of bottom are adjusted.

The inner body becomes measuring device 600 by the cooperating at pore pressure water source 610 and back-pressure water source 620 to realize to pressure The top pressure of coarse grain earth sample and the pressure of bottom in room 400 are controlled, it is therefore an objective to top to coarse grain earth sample and Pressure between bottom is controlled.Due to the coarse grain earth sample in balancing gate pit 400 pressure and load effect under occur in After portion's volume change, meeting discharge part water in coarse grain earth sample, therefore by pore pressure water source 610 and back-pressure water source 620 to pressure The top pressure of coarse grain earth sample and the pressure of bottom in room 400 are adjusted so that at the top and bottom of coarse grain earth sample There are pressure difference (pressure at pore pressure water source 610 is less than the pressure at back-pressure water source 620) between portion, just can guide in coarse grain earth sample Since the water of internal volume variation discharge is flowed out to 610 end of pore pressure water source.The step of simplifying operation as a result, can be conveniently direct Obtain the displacement data after more accurate coarse-grained soil sample interior volume change.

Further, in the present embodiment, it is supervised in real time for the pressure to pore pressure water source 610 and back-pressure water source 620 It surveys, in order to which the hydraulic pressure to pore pressure water source 610 and back-pressure water source 620 is adjusted, therefore at pore pressure water source 610 and back-pressure water source Pressure sensor 630 is equipped on 620.

It is measured it should be noted that carrying out inner body and becoming it is required that coarse grain earth sample is in saturation state, to prevent from placing Coarse grain earth sample inside to balancing gate pit 400 is saturation coarse-grained soil, therefore it further includes that can improve slightly that the inner body, which becomes measuring device 600, The structure of grain earth sample saturation degree.

Specifically, in the present embodiment, it includes for from the bottom of balancing gate pit 400 to pottery which, which becomes measuring device 600, Native plate 700 inputs the saturation water tank 640 of liquid, and the vacuum pump 650 being connected to balancing gate pit 400.It is right by being saturated water tank 640 Coarse grain earth sample applies head pressure, can improve coarse grain earth sample saturation degree.In addition, it is necessary to which explanation, is saturated when passing through Water tank 640 apply head pressure cannot make coarse grain earth sample be saturated when, can by vacuum pump 650 to balancing gate pit 400 into Row vacuumize process or the back-pressure pressure at back-pressure water source 620 are completed to be saturated to coarse grain earth sample.

The inner body become measuring device 600 operation principle be：

By the cooperating at pore pressure water source 610 and back-pressure water source 620 to realize to the coarse grain earth sample in balancing gate pit 400 Top pressure and the pressure of bottom controlled, it is therefore an objective to the pressure between the top and bottom of coarse grain earth sample is controlled System.After internal volume variation occurs under external force due to the coarse grain earth sample in balancing gate pit 400, in coarse grain earth sample Meeting discharge part water, therefore the top of the coarse grain earth sample in balancing gate pit 400 is pressed by pore pressure water source 610 and back-pressure water source 620 Power and the pressure of bottom are adjusted so that there are pressure difference (pore pressure water sources 610 between the top and bottom of coarse grain earth sample Pressure be less than the pressure at back-pressure water source 620), just can guide in coarse grain earth sample since the water of internal volume variation discharge is to hole Press the outflow of 610 end of water source.The step of simplifying operation as a result, can facilitate.Directly obtain in more accurate coarse grain earth sample Displacement data after portion's volume change.

The inner body becomes measuring system during being tested, and inner cavity is put by the coarse grain earth sample that will be tested In 441, saturated process is carried out.

Then, axis 460 is applied by load and applies external force test to the coarse grain earth sample being arranged in inner cavity 441.And it is same When need to ensure to deposit between the pressure balance of outer layer water cavity 431 and confining pressure water cavity 451 and the top and bottom of coarse grain earth sample In pressure difference (pressure at pore pressure water source 610 is less than the pressure at back-pressure water source 620).

During coarse grain earth sample bears external force, it can be kept in outer layer water cavity 431 by self-balancing water vat 470 Pressure is constant, and in the external volume variation that can cause coarse grain earth sample when coarse grain earth sample bears external force and internal volume Variation.

When the variation of external volume occurs for the coarse grain earth sample in inner cavity 441, due to outer layer water cavity 431 and confining pressure water cavity Pressure balanced state is between 451, and since the external volume of coarse grain earth sample changes, the appearance of inner cavity 441 will be caused Product variation.As a result, in the case where the pressure of confining pressure water cavity 451 is constant, due to the variation variation of coarse grain earth sample generating body product Lead to the water filling volume change into confining pressure water cavity 451 by confining pressure water-supply structure, from there through confining pressure water-supply structure to confining pressure The variation of water filling volume in water cavity 451, just more can accurately calculate sample it is load bearing in the case of body variable.Therefore The inner body, which becomes measuring system, can directly measure the volume of sample variation that coarse-grained soil sample exterior compression (rising with cutting) occurs afterwards.

At the same time, under external force, coarse grain earth sample can occur interior the coarse grain earth sample in balancing gate pit 400 simultaneously Portion's volume change, coarse grain earth sample can cause the moisture in coarse grain earth sample to be discharged after internal volume variation occurs.And Under the guiding function of the pressure at pore pressure water source 610 and back-pressure water source 620, since internal volume variation is arranged in coarse grain earth sample The water gone out can be flowed out to 610 end of pore pressure water source.More accurate coarse grain earth sample is directly obtained in outer power thereby, it is possible to convenient Displacement data under effect.

Inner wall of 700 structure setting of pottery clay plates in undersetting 420 and the lower section positioned at sample to be tested.Specifically, originally Since 700 structure of pottery clay plates is more easily damaged, therefore it is guarantee test in the process for carrying out coarse-grained soil experiment in embodiment It is normally carried out, and in the case where not influencing experiment and being normally carried out, in the present embodiment, using multiple pottery clay plates 700 are arranged Mode, the purpose is to the liquid being discharged in not influencing from coarse grain earth sample to be flowed by pottery clay plates 700 to pore pressure water source 610 It is dynamic, by the way that multiple pottery clay plates 700 are arranged, reduce the stress during the test of pottery clay plates 700, avoid during experiment Pottery clay plates 700 are destroyed, and so as to cause needing to suspend experiment, and replace the pottery clay plates 700 in 700 structure of pottery clay plates.And this The set-up mode of sample can reduce the probability that pottery clay plates 700 are destroyed, and can reduce the maintenance cost of pottery clay plates 700, from And play the role of saving test period and experimentation cost.

Secondly, to prevent the pottery clay plates 700 in the process for carrying out coarse-grained soil experiment destructurized, in the present embodiment In, mounting plate can also be set between neonychium and pottery clay plates 700, and can be provided on a mounting board multiple for pacifying The groove of multiple pottery clay plates 700 is filled, multiple grooves are corresponded with multiple pottery clay plates 700, are installed by corresponding to pottery clay plates 700 In groove, can further it play a protective role to pottery clay plates 700.

To sum up, this sound state triaxial test system 100, for testing coarse grain earth sample comprising main machine structure 200, vibrator 300, balancing gate pit 400, body change measuring device and control system, vibrator 300 and balancing gate pit 400 are installed on host Structure 200, vibrator 300 are used to apply load to coarse-grained soil, and balancing gate pit 400 is for placing coarse grain earth sample to be tested, body Become measuring device and be used to measure volume change of the coarse grain earth sample under the load effect of vibrator 300, control system is for controlling Vibrator 300 and body processed become the automatic running of measuring device.This sound state triaxial test system 100 can measure coarse grain earth sample Inside and outside volume change under exciting state, it is not only full-featured abundant to obtain every mechanical property parameters of coarse-grained soil, Test result is accurate, and scalability is strong, and high degree of automation, simple to operate, effectively compensates for existing three axis examination The defect of check system.

The preferred embodiment that these are only the utility model, is not intended to limit the utility model, for this field Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model, Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of vibrator, which is characterized in that including mounting base and force piece, the force piece is oil cylinder, the cylinder of the oil cylinder Cylinder is fixedly connected on the mounting base, and the piston rod of the oil cylinder can be relative to cylinder barrel straight reciprocating.

2. vibrator according to claim 1, which is characterized in that the oil cylinder is the low frictional resistance sealed hydraulic of two-way double acting Oil cylinder.

3. vibrator according to claim 1, which is characterized in that the mounting base is cylindrical, and the cylinder barrel is in disk Shape and edge are fixedly connected on one end of the mounting base, and the piston rod is located at described through the mounting base and both ends Outside mounting base.

4. vibrator according to claim 3, which is characterized in that the vibrator further includes dust cover, the dust cover The position that the oil cylinder is located at outside the mounting base is covered, the piston rod is located at one end outside the mounting base can be described anti- Dust hood energy straight reciprocating.

5. vibrator according to claim 4, which is characterized in that be provided with displacement meter, the displacement in the dust cover The both ends of meter are located at one outside the mounting base with the one end of the dust cover far from the mounting base and the piston cylinder respectively End connection.

6. vibrator according to claim 5, which is characterized in that the displacement is calculated as magnetostrictive displacement sensor.

7. vibrator according to claim 5, which is characterized in that the one end of the dust cover far from the mounting base is removable It unloads and is connected with mounting head, the one end of the displacement meter far from the piston cylinder is removably connected to the mounting head.

8. vibrator according to claim 7, which is characterized in that the mounting head is threadedly connected to the dust cover.

9. vibrator according to claim 4, which is characterized in that the dust cover, the cylinder barrel and the mounting base are logical Multiple screw connections are crossed, the multiple screw is arranged along the circumferencial direction interval of the cylinder barrel, the head pressure of each screw The outer wall of dust cover is stated in residence, and screw rod is locked after sequentially passing through the dust cover and the cylinder barrel in mounting base.

10. a kind of sound state triaxial test system, for testing unsaturation coarse-grained soil, which is characterized in that including right It is required that the vibrator described in 1-9 any one, the vibrator is used to apply load to the unsaturation coarse-grained soil.