CN208476700U - A kind of soil body dynamic test device - Google Patents

Abstract

The utility model proposes a kind of soil body dynamic test devices, are related to the technical field of ocean test equipment.The utility model includes test box, and the bottom of test box is equipped with the soil body, and the inside of test box is loaded with seawater, and test box is equipped with pressure measurement mechanism, is connected with load plate mechanism above test box；Load plate mechanism is connected with circulation power mechanism and displacement measurement mechanism, and pressure measurement mechanism is connected with computer controlled machine structure, and load plate mechanism includes the plate body for having planar structure positioned at bottom and the cone positioned at plate body top.The load plate mechanism of the utility model forms that intermediate pressure is big to the soil body and plane that circumferential pressure is gradually reduced loads variation, the wave for generating similar wave crest to trough transition loads effect, effectively simulate the liquefaction situation of the Potential of Seabed Under Wave Loading soil body, really reflect the kinetic characteristics of the Potential of Seabed Under Wave Loading soil body, pore pressure and soil pressure when Accurate Determining seabed soil liquefaction, it is easy to operate, it is economical and practical.

Description

A kind of soil body dynamic test device

Technical field

The utility model relates to the technical fields of ocean test equipment, particularly relate to a kind of soil body dynamic test device.

Background technique

Biggish stormy waves can make sea bed liquefy, and sea bed Liquefaction caused by wave is that seashore and offshore engineering are necessary One of critical issue of consideration, the stability analysis of Potential of Seabed Under Wave Loading are also submerged pipeline, breakwater and ocean platform base Important content in plinth design.Wave action makes sea bed generate oscillation pore water pressure and residual pore water pressure, works as pore water Pressure has little time to dissipate, and sea bed internal void water pressure will accumulate, i.e., residual pore water pressure rises, and has so as to cause the soil body Efficacy reduces, and the shear strength for weakening seabed soil even results in the liquefaction of the soil body.Seabed soil is sent out under the wave action Raw liquefaction, liquefies during occurrence and development, and effective stress reduces, and the soil body shows fluid state, excess pore water pressure It is equal with the self gravity of the soil body.

Currently, relying primarily on dynamic triaxial apparatus or wave flume to seawater in the liquefaction research of seabed soil under the wave action Lower liquefaction of soil mass situation is monitored.Dynamic triaxial apparatus includes three pressure chamber, excitational equipment and measurement equipment component parts, this The pressure chamber of dynamic triaxial apparatus is undersized, can not achieve in a loading procedure of wave to the wave in seabed soil horizontal direction Shape loading mode really cannot act on the liquefaction situation of lower seabed soil by simulated waves, be unable to satisfy experiment demand, moreover, this Kind dynamic triaxial apparatus is expensive；Wave flume can act on the liquefaction test of lower seabed soil by wave maker simulated waves, but It is that the seawater dosage that this wave flume needs is very big, moreover, cannot achieve the simulation that big wave acts on sea bed, workload Greatly, wave flume is costly.

Utility model content

The utility model proposes a kind of soil body dynamic test devices, solve dynamic triaxial apparatus in the prior art and wave flume Effectively simulated waves it can not act on the liquefaction situation of lower seabed soil and lead to its test result inaccuracy, heavy workload and expense High problem.

The technical solution of the utility model is achieved in that including test box, the bottom of the test box is equipped with soil Body, the inside of the test box are loaded with seawater, and the test box is equipped with for being tested soil pressure in it and pore pressure Pressure measurement mechanism is connected with load plate mechanism above the test box；The load plate mechanism, which is connected with, to be driven it along Vertical direction does the circulation power mechanism of linear reciprocating motion, and the load plate mechanism, which is also connected with, supervises its moving displacement The displacement measurement mechanism of survey, the pressure measurement mechanism are connected with computer controlled machine structure, the displacement measurement mechanism also with institute State the connection of computer controlled machine structure；The load plate mechanism includes load plate, and the load plate includes being located at bottom to have plane The plate body of structure and cone positioned at the plate body top, the load plate have elasticity, the cone and the circulation power Mechanism connection, the plate body are moved upwards far from the test box, and the plate body moves downwardly into the seawater of the test box In.

The test box of the utility model is connected with tapered load plate, and the load plate of this tapered setting has up-small and down-big Construction, in a loading procedure, plane big to soil body formation intermediate pressure and that circumferential pressure is gradually reduced loads variation, produces The wave of raw similar wave crest to trough transition loads effect, effectively simulates the liquefaction situation of the Potential of Seabed Under Wave Loading soil body, very The kinetic characteristics of the Potential of Seabed Under Wave Loading soil body are reflected in fact；The utility model is in displacement measurement mechanism, pressure measurement mechanism Under mating reaction with computer controlled machine structure, pore pressure and soil pressure when Accurate Determining seabed soil liquefaction, easy to operate, warp It helps practical.It is different that the soil body dynamic test device of the utility model is that a kind of simulated waves are applied at seabed soil Different Plane The CYCLIC LOADING of vertical load and the device of measurement, are related under vertical load action, in the soil body when soil body liquefies The test of soil pressure and pore pressure can be used for the equipment of the liquefaction research of the Potential of Seabed Under Wave Loading soil body.

Embodiment as one preferred, the circulation power mechanism include motor, turntable, positioning bar and load bar, The motor is connect with the turntable, and one end of the positioning bar is fixedly connected with the turntable, the other end of the positioning bar It is rotatablely connected with one end of the load bar, the other end of the load bar is connect with the cone.Circulation power mechanism can be real The vertical CYCLIC LOADING of existing load plate mechanism, when the power is turned on, motor drives turntable to be rotated, the rotation fortune of turntable It is dynamic that linear motion on the vertical direction of load bar is converted by bar of transposing, so that load plate be driven to carry out on vertical direction Linear reciprocating motion, and then periodic pressure is imposed to the soil body, thus effect of the simulated waves to submarine soil.

Embodiment as one preferred, the turntable are equipped with positioning groove, one end of the positioning bar and the tune Position slot is fixedly connected, and the bottom of the turntable is equipped with support base, and the load bar includes the in same vertical straight line One load bar and the second load bar, first load bar and second load bar are connected by abutment sleeve.In positioning groove In, close to the place in the center of circle, turning small, the amplitude that load bar moves up and down is also small, conversely, the place far from the center of circle, it is big to turn width, The amplitude that load bar moves up and down is also big；Under normal conditions, positioning bar is fixed by screws in positioning groove, if necessary to adjust Bar transpose at a distance from the center of circle, loosens screw, sliding positioning bar arrives designated position, then tighten screw.Turntable is mounted on On support base, makes its firm placement, be easy to use；First load bar and the second load bar make it under the action of abutment sleeve Linear motion is firm, is not in off-set phenomenon, has fully ensured that the reciprocating motion of load plate mechanism on the same line.

Embodiment as one preferred, the displacement measurement mechanism include displacement sensor, are arranged in the cone On reflecting plate and be arranged on the plate body first pressure probe, the test box be equipped with bracket, the displacement sensing Device is located on the bracket, and institute's displacement sensors, the reflecting plate and first pressure probe are located on the same line, The first pressure probe is connect by the first conducting wire with the computer controlled machine structure.Displacement sensor is fixed by the bracket Simultaneously distance test case has enough distances for the top of test box, and ensure that displacement sensor stablizes installation, while also not interfering Linear reciprocating motion in the up and down direction of load plate mechanism；Displacement sensor, reflecting plate and first pressure probe are in arrangement It corresponds, displacement sensor can calculate different parts in load plate by the move distance that reflecting plate incudes load plate Move distance to measure the move distance of load plate mechanism by displacement measurement mechanism, while being popped one's head in by first pressure and being surveyed The stress variation for obtaining the position, has recorded the moving displacement of load plate bottom in loading procedure, to judge liquefaction of soil mass in real time When stress situation.Simulated waves effect under, on same plane the soil body of different location while measuring its stress intensity, The strain regime for also measuring the position realizes the one-to-one correspondence of the stress-strain state of the different location soil body on same plane.

Embodiment as one preferred, the cone are equipped with the through-hole passed through for first conducting wire, the plate Body is equipped with the mounting hole for installing the first pressure probe.The load plate mechanism of this tapered setting can be cone, It can be polygonal pyramid shape, such as: rectangular pyramid；Under normal conditions, the shape of test box and the shape of load plate are corresponding consistent, load Plate is cone, and test box is then cylinder, and load plate is pyramid shape, and test box is then cuboid；Cone is equipped with logical Hole, the first conducting wire are pooled together by through-hole, and are fixed far from the direction of load plate mechanism, avoid the first conducting wire to adding The influence of support plate mechanism kinematic process.There are certain spaces between load plate and test box, during loading, test box bottom On the soil body generated the trend to circumferential expansion by vertical load, the continuous wave in front and back is to sea when for simulated waves effect The effect of subsoil body.

Embodiment as one preferred, the pressure measurement mechanism include second pressure probe, the second pressure Probe includes pore pressure probe and soil pressure probe, and the second pressure probe is distributed along the circumferential direction of the test box in uniform array, The second pressure probe is connect by the second conducting wire with the computer controlled machine structure.On the same position of test box simultaneously Its soil pressure and pore pressure are measured, therefore, is mounted with soil pressure probe and pore pressure probe simultaneously at same position；Under normal conditions, hole Pressure probe and soil pressure probe being arranged circumferentially along test box according to certain scale, the soil pressure probe and pore pressure of each layout points Probe is arranged side by side in same depth, to measure the stress condition of the soil body during the whole test process, and passes through computer Control mechanism is directly displayed or is controlled.

Embodiment as one preferred, the test box, which is equipped with, pops one's head in across for the second pressure and puts it The probe hole set, the probe hole are equipped with the sealing device for being sealed to the test box, the number of the probe hole Amount is greater than the quantity of second pressure probe.One end of probe hole is that the second pressure is laid in the side for the inner wall for being located at test box Power probe is soil pressure probe and pore pressure probe, and the second conducting wire is pierced by along probe hole by the inside of test box outward, in test box External probes hole be sealed using sealing device, fully ensured that the stability of seawater in test box；The quantity of probe hole Very much, it can select to need to install the position of pressure measurement mechanism according to the actual situation, selection is flexible.

Embodiment as one preferred, the sealing device include interior sealing column and are set in outside the interior sealing column The external seal column in portion, the interior sealing column and the external seal column are connected through a screw thread, the interior sealing column and the external seal It is equipped with the springhole passed through for second conducting wire on column, is equipped with sealing-plug in the springhole.Need to place soil pressure probe When with pore pressure probe, the sealing-plug on sealing device is removed, the second conducting wire is penetrated into springhole, then by interior sealing column and external seal Column is tightened, and fills in probe hole, to have the function that sealing is popped one's head in second pressure is connected to；Remaining does not place second pressure The probe hole of probe is sealed also by the sealing device, at this time without removing the sealing-plug on springhole.

Embodiment as one preferred, matric suction measurement pipe is also connected on the test box, and the matrix is inhaled Power measurement pipe is corresponding with the height of the pressure measurement mechanism consistent.The installation site of matric suction measurement pipe is and pressure probe Position correspond, be tightly attached to the circumferential direction of test box respectively, lead to outside from lower part；Matric suction measurement pipe and soil pressure are visited Head, pore pressure probe match, and especially in the liquefaction research for the unsaturation soil body, are recycling for measuring the unsaturation soil body Under load action, the variation of water water content in migration process.

Embodiment as one preferred is additionally provided with fixed frame in the middle part of the test box, and the fixed frame includes bottom The fixed link of seat and setting on the base, the fixed link are equipped with most fixed rings, and the fixed ring is equipped with institute State pressure measurement mechanism.Pedestal is the big homogeneous irony of weight, can steadily be placed in the middle part of test box, is set without other auxiliary It applies；The height of second pressure probe corresponds in fixed ring mounting height and test box, and fixed ring surface is according to certain distance Equipped with aperture, can be screwed up with screw across aperture, to the second conducting wire of fixed different thicknesses, during preventing CYCLIC LOADING, Second conducting wire and second pressure probe are mobile with wave.

The bottom of the test box of the utility model is laid with the soil body of certain altitude, selects conoid with a certain toughness Or class rectangular pyramid figure load plate, load plate can be rubber material and be made, and can generate elastic deformation during the motion；Add Support plate carries out the CYCLIC LOADING effect of different loads to the soil body in test box at Different Plane, is applied to simulated waves The liquefaction situation of soil body when sea bed；Cause its rigidity different because the centre of load plate is different from the thickness on periphery, same The peritropous transition change from big to small in the center that will form on-load pressure from load plate in loading procedure, may be implemented same Moment wave action generates wave crest to the wave of trough transition and loads effect in bottom, realizes simulated waves to soil body difference The CYCLIC LOADING of difference load at plane；The utility model can carry out soil pressure in the circumferential direction of test box and middle part and pore pressure is surveyed Amount, soil pressure probe and pore pressure probe are arranged along the mode of multiple depth identical layers position, can measure wave to the soil body in same a period of time Between, the pressure condition at different location, simultaneous interpretation while realizing pressure.

Compared with prior art, the utility model has the beneficial effects that

1) test box of the utility model is connected with tapered load plate, and the load plate of this tapered setting has up-small and down-big Construction, load plate can be rubber material with a certain toughness, in a loading procedure, to the soil body formed intermediate pressure Plane big and that circumferential pressure is gradually reduced loads variation, and synchronization wave action may be implemented in bottom and generate wave crest to wave The wave of paddy transition loads effect, effectively simulates the liquefaction situation of the Potential of Seabed Under Wave Loading soil body, really reflects wave work With the kinetic characteristics of lower seabed soil；Under simulated waves effect, the soil body of different location is to measure its stress big in plane While small, the strain regime of the position is measured, realize the stress-strain state of the different location soil body in plane one is a pair of It answers.

2) the load plate mechanism of the utility model is in displacement measurement mechanism, pressure measurement mechanism and computer controlled machine structure Under mating reaction, real simulation course of exerting pressure of the wave each point to the soil body, and each point can be accurately calculated on wave to soil The pressure of body, has quantified the ess-strain of the soil body, pore pressure and soil pressure when Accurate Determining seabed soil liquefaction, easy to operate, It is economical and practical；The soil body dynamic test device of the utility model is that a kind of simulated waves are applied at seabed soil Different Plane not With the CYCLIC LOADING of vertical load and the device of measurement, it is related under vertical load action, in soil when the soil body liquefies The test of soil pressure and pore pressure can be used for the equipment of the liquefaction research of the Potential of Seabed Under Wave Loading soil body.

3) test box of the utility model and load plate can be had made to order, size can not tested test agent size and number limit System can prepare the soil body according to experiment demand；The utility model is deployed by positioning groove and motor, can be loaded out stronger Wave；Each components of the utility model are common, and components are from a wealth of sources, and structure is simple, cheap, production and assembling It is all extremely convenient, it is easily processed into type, it can produce in batches；The utility model is small device, since material is mainly sub- gram Power plate and stainless steel, light weight are easy to carry；It is few to test the man power and material needed, convenient for operation.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the schematic perspective view of the utility model one embodiment；

Fig. 2 is the broken section structural schematic diagram of Tu1Zhong circulation power mechanism；

Fig. 3 is the enlarged structure schematic diagram of positioning groove in Fig. 2；

Fig. 4 is the enlarged structure schematic diagram of positioning screw in Fig. 3；

Fig. 5 is the broken section structural schematic diagram of Tu1Zhong load plate mechanism；

Fig. 6 is the broken section structural schematic diagram that circled is drawn in Fig. 5；

Fig. 7 is the broken section structural schematic diagram of test box in Fig. 1；

Fig. 8 is the enlarged structure schematic diagram of sealing device in Fig. 7；

Fig. 9 is the decomposition texture schematic diagram of Fig. 8；

Figure 10 is the broken section structural schematic diagram of fixed frame in Fig. 1；

Figure 11 is the schematic perspective view of another embodiment of the utility model；

In figure: 1- circulation power mechanism；11- power lead；12- motor；14- turntable；15- support base；16- load bar； 17- abutment sleeve；18- positioning bar；19- positioning groove；111- positioning screw；112- nut；113- washer；114- nut；2- Shift measurement mechanism；21- displacement sensor；22- bracket；23- reflecting plate；24- first pressure probe；The first conducting wire of 25-；3- load Trigger structure；31- load plate；32- through-hole；4- fixed frame；41- pedestal；42- fixed link；43- fixed ring；44- fixation hole；45- is solid Determine screw；5- test box；6- pressure measurement mechanism；61- pore pressure probe；62- soil pressure probe；63- probe hole；64- sealing device； Sealing column in 641-；642- external screw thread；643- internal screw thread；644- external seal column；The second conducting wire of 68-；7- matric suction measurement pipe； 8- computer controlled machine structure；81- computer；82- data collecting instrument.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.

Embodiment one

Refering to attached drawing 1, attached drawing 2, attached drawing 3, attached drawing 4, attached drawing 5, attached drawing 6, attached drawing 7, attached drawing 8, attached drawing 9 and attached drawing 10, originally Utility model includes test box 5, and the bottom of test box 5 is equipped with the soil body, and the inside of test box 5 is loaded with seawater, on test box 5 Equipped with the pressure measurement mechanism 6 for being tested soil pressure in it and pore pressure, the top of test box 5 is connected with load plate mechanism 3；Load plate mechanism 3, which is connected with, drives it along the circulation power mechanism 1 that vertical direction does linear reciprocating motion, load plate mechanism 3 are also connected with the displacement measurement mechanism 2 detected to its moving displacement, and pressure measurement mechanism 6 is connected with computer controlled machine Structure 8, displacement measurement mechanism 2 are also connect with computer controlled machine structure 8；Load plate mechanism 3 includes load plate 31, and load plate 31 includes The plate body for having planar structure positioned at bottom and the cone at the top of plate body, plate body have elasticity, cone and cycle power machine Structure 1 connects, and plate body is moved upwards far from test box 5, and plate body moves downwardly into the seawater of test box 5.The utility model Test box 5 is made using acrylic board, be it is transparent, therefore, test box 5 in attached drawing 1 and attached drawing 7 is it can be seen that in it The structure in portion.The test box 5 of the utility model is connected with tapered load plate 31, and the load plate 31 of this tapered setting has upper small Big construction down, load plate can form centre to the soil body in a loading procedure for rubber material with a certain toughness Pressure is big and plane that circumferential pressure is gradually reduced loads variation, generate similar wave crest to trough transition wave load effect, The liquefaction situation of the Potential of Seabed Under Wave Loading soil body effectively is simulated, the dynamics for really reflecting the Potential of Seabed Under Wave Loading soil body is special Property；Under the mating reaction of displacement measurement mechanism 2, pressure measurement mechanism 6 and computer controlled machine structure 8, Accurate Determining sea bed Pore pressure and soil pressure when liquefaction of soil mass.For simplicity, attached drawing 1, attached drawing 5 and 7 middle part intraphase conductor of attached drawing include the first conducting wire 25 and second conducting wire 68 be not shown.

Refering to attached drawing 1, attached drawing 2, attached drawing 3 and attached drawing 4, the circulation power mechanism 1 of the utility model includes motor 12, turntable 14, positioning bar 18 and load bar 16, motor 12 are connect with turntable 14, and one end of positioning bar 18 is fixedly connected with turntable 14, are transposed The other end of bar 18 and one end of load bar 16 are rotatablely connected, and the other end of load bar 16 is connect with cone.Circulation power mechanism 1 The vertical CYCLIC LOADING of load plate mechanism 3 can be achieved, motor 12 connects power supply by power lead 11, when power supply connects When logical, motor 12 drives turntable 14 to be rotated by linkage torque, and the rotary motion of turntable 14 passes through 18 turns of bar of positioning The vertical straight line movement of load bar 16 is turned to, so that load plate mechanism 3 is driven to carry out the linear reciprocating motion on vertical direction, into And periodic pressure is imposed to the soil body, thus effect of the simulated waves to submarine soil.In the present embodiment, turntable 14, which is equipped with, to be adjusted One end of position slot 19, positioning bar 18 is fixedly connected with positioning groove 19, and the bottom of turntable 14 is equipped with support base 15, and load bar 16 includes The first load bar and the second load bar in same vertical straight line, the first load bar and the second load bar pass through positioning sleeve Cylinder 17 connects.Turntable 14 is mounted on support base 15, is made its firm placement, is easy to use；First load bar and the second load bar Under the action of abutment sleeve 17, stablizes its linear motion, be not in off-set phenomenon, fully ensured that load plate mechanism 3 Reciprocating motion on the same line；Positioning bar 18 is fixed on positioning groove 19 by screw 111 of transposing, and positioning screw 111 wraps Nut 112, screw rod, washer 113 and nut 114 are included, screw rod is equipped with screw thread, in matching for washer 113, nut 112 and nut 114 Under cooperation is used, make 18 fixation of bar of transposing, the circular motion of turntable 14 is smoothly converted into the linear motion of load bar 16, together When, the position for bar 18 of transposing is easy to adjust, can easily adjust the motion amplitude of load plate mechanism 3.

Refering to attached drawing 1, attached drawing 5 and attached drawing 6, the displacement measurement mechanism 2 of the utility model includes displacement sensor 21, setting Reflecting plate 23 in cone and the first pressure probe 24 being arranged on plate body, test box 5 is equipped with bracket 22, displacement sensing Device 21 is located on bracket 22, and displacement sensor 21, reflecting plate 23 and first pressure probe 24 are located on the same line, the first pressure Power probe 24 is connect by the first conducting wire 25 with computer controlled machine structure 8.Displacement sensor 21 is fixed on test by bracket 22 Simultaneously distance test case 5 has enough distances for the top of case 5, and ensure that displacement sensor 21 stablizes installation, while also not interfering Linear reciprocating motion in the up and down direction of load plate mechanism 3；Displacement sensor 21, reflecting plate 23 and first pressure probe 24 are Be it is multiple and corresponded in arrangement, displacement sensor 21 can pass through the move distance meter that reflecting plate 23 incudes load plate 31 Calculate load plate 31 on different parts move distance, thus by displacement measurement mechanism 2 measure load plate mechanism 3 movement away from From, while being changed by the stress that first pressure probe 24 measures the position, load plate mechanism 3 in loading procedure is had recorded in real time The moving displacement of bottom, thus stress situation when judging liquefaction of soil mass.Multiple displacement sensors 21 and multiple first pressures are visited First 24, under simulated waves effect, the soil body of different location measures the position while measuring its stress intensity in plane Strain regime realizes the one-to-one correspondence of the stress-strain state of the different location soil body in plane.In the present embodiment, set in cone There is the through-hole 32 passed through for the first conducting wire 25, plate body is equipped with the mounting hole of installation first pressure probe 24.This tapered setting Load plate 31 can be cone, be also possible to polygonal pyramid shape, such as: rectangular pyramid；Under normal conditions, the shape of test box 5 Corresponding with the shape of load plate 31 consistent, load plate 31 is cone, and test box 5 is then cylinder, and load plate 31 is rectangular pyramid Shape, test box 5 are then cuboid；Cone is equipped with through-hole 32, and the first conducting wire 25 is pooled together by through-hole 32, and remote Direction from load plate mechanism 3 is fixed, and influence of first conducting wire 25 to 3 motion process of load plate mechanism is avoided.Load plate 31 There are certain spaces between test box 5, and during loading, the soil body on 5 bottom of test box is generated by vertical load To the trend of circumferential expansion, continuous effect of the wave to submarine soil in front and back when for simulated waves effect.In the present embodiment, add Support plate 31 is pyramid shape, and test box 5 is cuboid.

Refering to attached drawing 1, attached drawing 7, attached drawing 8, attached drawing 9 and attached drawing 10, the pressure measurement mechanism 6 of the utility model includes second Pressure probe, second pressure probe include pore pressure probe 61 and soil pressure probe 62, and second pressure probe is in along the circumferential direction of test box 5 Uniform array distribution, second pressure probe are connect by the second conducting wire 68 with computer controlled machine structure 8.In the same of test box 5 Its soil pressure and pore pressure are measured simultaneously on position, therefore, is mounted with pore pressure probe 61 and soil pressure probe 62 simultaneously at same position； Under normal conditions, pore pressure probe 61 and soil pressure probe 62 according to certain scale being arranged circumferentially along test box 5, each arrangement The pore pressure probe 61 and soil pressure probe 62 of point be arranged side by side in same depth, to measure the soil body during the whole test process Stress condition, and directly display or control by computer controlled machine structure 8.Test box 5 is equipped with the spy that the second conducting wire 68 passes through Head bore 63, probe hole 63 are equipped with the sealing device 64 for being sealed to test box 5, and the quantity of probe hole 63 is greater than second The quantity of pressure probe.One end of probe hole 63 is that pore pressure probe 61 and soil pressure are laid in the side for the inner wall for being located at test box 5 Probe 62, the second conducting wire 68 is pierced by along probe hole 63 by the inside of test box 5 outward, in the external probes hole 63 of test box 5 It is sealed using sealing device 64, has fully ensured that the stability of seawater in test box 5, there are many quantity of probe hole 63, can To select to need to install the position of pressure measurement mechanism 6 according to the actual situation, selection is flexible.In the present embodiment, sealing device 64 Including the interior external seal column 644 sealing column 641 and be set in outside interior sealing column 641, interior sealing column 641 and external seal column 644 It is connected through a screw thread, interior sealing column 641 is equipped with external screw thread 642, and external seal column 644 is equipped with internal screw thread 643, interior sealing column 641 and external seal column 644 on be equipped with the springhole passed through for the second conducting wire 68, sealing-plug is equipped in springhole.It needs to place When pore pressure probe 61 and soil pressure probe 62, the sealing-plug in springhole is removed, the second conducting wire 68 is penetrated into springhole, then will be interior close Envelope column 641 and external seal column 644 are tightened, and fill in probe hole 63, to reach sealing and the work for being connected to second pressure probe With；Remaining probe hole 63 for not placing second pressure probe is sealed also by the sealing device 64, at this time without removing bullet Sealing-plug on property hole.In addition, the middle part of the test box 5 of the utility model is additionally provided with fixed frame 4, fixed frame 4 includes pedestal 41 With the fixed link 42 being arranged on pedestal 41, fixed link 42 is equipped with most fixed rings 43, and fixed ring 43 is surveyed equipped with pressure Measuring mechanism 6.Pedestal 41 is the big homogeneous irony of weight, can steadily be placed in the middle part of test box 5, is not necessarily to other auxiliary equipment； The height of second pressure probe corresponds in 43 mounting height of fixed ring and test box 5 in fixed link 42,43 table of fixed ring Face is equipped with fixation hole 44 according to certain distance, passes through fixation hole 44 using fixed screw 45 and screws up, to fixed different thicknesses Second conducting wire 68, during preventing CYCLIC LOADING, the second conducting wire 68 and second pressure probe are mobile with wave.

Refering to attached drawing 1 and attached drawing 7, matric suction measurement pipe 7, matric suction measurement pipe 7 and pressure are also connected on test box 5 The height of power measuring mechanism 6 is corresponding consistent.The installation site of matric suction measurement pipe 7 with pore pressure probe 61 and soil pressure probe 62 Installation site correspond, be tightly attached to the circumferential direction of test box 5 respectively, lead to outside from lower part；Matric suction measurement pipe 7 and hole Pressure probe 61, soil pressure probe 62 match, especially in the liquefaction research for the unsaturation soil body, for measuring unsaturated soil Body is under cyclic load, the variation of water water content in migration process.The bottom of the test box 5 of the utility model is laid with one The soil body for determining height selects conoid with a certain toughness or class rectangular pyramid figure load plate 31, and load plate 31 can be Rubber material, the CYCLIC LOADING that different loads are carried out at wherein soil body Different Plane is acted on, is applied to simulated waves The liquefaction situation of soil body when sea bed；Cause its rigidity different because the centre of load plate 31 is different from the thickness on periphery, same The peritropous transition change from big to small in the center that will form on-load pressure from load plate structure 31 in a loading procedure, Ke Yishi Existing synchronization wave action generates wave crest to the wave of trough transition and loads effect, realize simulated waves to soil in bottom The CYCLIC LOADING of difference load at body Different Plane；The computer controlled machine structure 8 of the utility model includes computer 81 and data Acquisition Instrument 82, data collecting instrument 82 are used for pore pressure, soil pressure and the acquisition of displacement, and computer 81 shows, handles and controls for data System, the computer 81 and data collecting instrument 82 of the utility model are existing equipment, in terms of the utility model is not related to program software Improvement, pertain only to the improvement in terms of mechanical structure；The utility model can carry out soil pressure in the circumferential direction of test box 5 and middle part It is measured with pore pressure, pore pressure probe 61 and soil pressure probe 62 are arranged along the mode of multiple depth identical layers position, can measure wave pair Pressure condition of the soil body at same time, different location, simultaneous interpretation while realizing pressure.

Embodiment two

Refering to attached drawing 11, on the basis of example 1, load plate 31 is arranged conical the present embodiment, and test box 5 is set It is set to cylinder, on the bottom plate body of load plate 31, five first pressure probes 24 is provided with along its diametrical direction, is loading In the cone of plate 31, along its symmetrical two bevel edge be provided with five with first pressure pop one's head in 24 be located along the same line it is anti- Plate 23 is penetrated, meanwhile, five displacement sensors 21, displacement sensor 21, reflecting plate are provided on the top-support 22 of test box 5 23 and the position of first pressure probe 24 correspond, under simulated waves effect, while determining on same straight line different positions The stress intensity for locating the soil body on i.e. different troughs and different wave crests is set, and has measured the strain regime at this five different locations, Realize the one-to-one correspondence of the stress-strain state of the different location soil body on same plane.

Refering to attached drawing 11, the setting cylindrical of test box 5 of the present embodiment, the soil body is laid on the bottom of test box 5, seawater It is filled in the inside of test box 5, the height of seawater is greater than the height of fixed frame 4；The spy of four column is uniformly arranged in the circumferential direction of test box 5 Head bore 63 shows in attached drawing 11 and uniformly installs three pressure measurement mechanisms 6, the number of each column probe hole 63 in each column probe hole 63 Amount five, the interval of pressure measurement mechanism 6 are mounted on three probe holes 63；Meanwhile the fixed ring 43 on fixed frame 4 is also five A, three pressure measurement mechanisms 6 are spaced in three fixed rings 43 being installed therein；The setting of matric suction measurement pipe 7 is being tested The side of case 5, matric suction measurement pipe 7 are the U-tube being connected on test box 5, can be intuitive by matric suction measurement pipe 7 Observation test box 5 in pressure condition, the column probe hole 63 therein on test box 5 of pressure measurement mechanism 6, matrix inhale Power measurement pipe 7 is three, and the position of three pressure measurement mechanisms 6 of installation site and one side respectively corresponds unanimously.In order to For purpose of brevity, 11 middle part intraphase conductor of attached drawing includes that the second conducting wire 68 is not shown.

Therefore, compared with prior art, the utility model has the beneficial effects that

1) test box 5 of the utility model is connected with tapered load plate mechanism 3, the load plate mechanism 3 of this tapered setting With up-small and down-big construction, load plate 31 can be rubber material with a certain toughness, in a loading procedure, to soil Body forms that intermediate pressure is big and plane that circumferential pressure is gradually reduced loads variation, and synchronization wave action may be implemented the bottom of in Bed generates wave crest and loads effect to the wave of trough transition, effectively simulates the liquefaction situation of the Potential of Seabed Under Wave Loading soil body, very The kinetic characteristics of the Potential of Seabed Under Wave Loading soil body are reflected in fact；Under simulated waves effect, the soil body of different location in plane While measuring its stress intensity, the strain regime of the position is measured, the stress for realizing the different location soil body in plane is answered The one-to-one correspondence of change state.

2) the load plate mechanism 3 of the utility model is in displacement measurement mechanism 2, pressure measurement mechanism 6 and computer controlled machine Under the mating reaction of structure 8, real simulation course of exerting pressure of the wave each point to the soil body, and each point on wave can be accurately calculated To the pressure of the soil body, quantify the ess-strain of the soil body, pore pressure and soil pressure when Accurate Determining seabed soil liquefaction, operation side Just, economical and practical；The soil body dynamic test device of the utility model is that a kind of simulated waves are applied to seabed soil Different Plane The CYCLIC LOADING of the different vertical loads in place and the device of measurement, are related under vertical load action, when the soil body liquefies pair The test of soil pressure and pore pressure in soil can be used for the equipment of the liquefaction research of the Potential of Seabed Under Wave Loading soil body.

3) test box 5 of the utility model and load plate mechanism 3 can have made to order, and size can not tested test agent size sum number The limitation of amount can prepare the soil body according to experiment demand；The utility model is deployed by positioning groove 19 and motor 12, can be loaded Stronger wave out；Each components of the utility model are common, and components are from a wealth of sources, and structure is simple, cheap, Production and assembling are all extremely convenient, easily processed into type, can produce in batches；The utility model is small device, due to material Predominantly acrylic and stainless steel, light weight are easy to carry；It is few to test the man power and material needed, convenient for operation.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (10)

1. a kind of soil body dynamic test device, it is characterised in that: including test box, the bottom of the test box is equipped with the soil body, The inside of the test box is loaded with seawater, and the test box is equipped with the pressure for being tested soil pressure in it and pore pressure Measuring mechanism is connected with load plate mechanism above the test box；

The load plate mechanism, which is connected with, drives it along the circulation power mechanism that vertical direction does linear reciprocating motion, described to add Support plate mechanism is also connected with the displacement measurement mechanism being monitored to its moving displacement, and the pressure measurement mechanism is connected with calculating Machine control mechanism, the displacement measurement mechanism are also connect with the computer controlled machine structure；

The load plate mechanism includes load plate, and the load plate includes being located at bottom to have the plate body of planar structure and be located at institute The cone on plate body top is stated, the plate body has elasticity, and the cone is connect with the circulation power mechanism, and the plate body is upward The test box is moved away from, the plate body moves downwardly into the seawater of the test box.

2. soil body dynamic test device according to claim 1, it is characterised in that:

The circulation power mechanism includes motor, turntable, positioning bar and load bar, and the motor is connect with the turntable, described One end of positioning bar is fixedly connected with the turntable, and the other end of the positioning bar and one end of the load bar are rotatablely connected, The other end of the load bar is connect with the cone.

3. soil body dynamic test device according to claim 2, it is characterised in that:

The turntable is equipped with positioning groove, and one end of the positioning bar is fixedly connected with the positioning groove, the bottom of the turntable Equipped with support base, the load bar includes the first load bar and the second load bar in the same vertical straight line, and described the One load bar is connected with second load bar by abutment sleeve.

4. soil body dynamic test device according to claim 1, it is characterised in that:

The displacement measurement mechanism includes displacement sensor, the reflecting plate being arranged in the cone and is arranged on the plate body First pressure probe, the test box is equipped with bracket, and institute's displacement sensors are located on the bracket, the displacement sensing Device, the reflecting plate and first pressure probe are located on the same line, and the first pressure probe passes through the first conducting wire It is connect with the computer controlled machine structure.

5. soil body dynamic test device according to claim 4, it is characterised in that:

The cone is equipped with the through-hole passed through for first conducting wire, and the plate body, which is equipped with, installs the first pressure probe Mounting hole.

6. soil body dynamic test device described in any one of -5 according to claim 1, it is characterised in that:

The pressure measurement mechanism includes second pressure probe, and the second pressure probe includes that pore pressure is popped one's head in and soil pressure probe, The second pressure probe is distributed along the circumferential direction of the test box in uniform array, and the second pressure probe passes through the second conducting wire It is connect with the computer controlled machine structure.

7. soil body dynamic test device according to claim 6, it is characterised in that:

The test box is equipped with the probe hole popped one's head in across for the second pressure and place it, and the probe hole is equipped with Sealing device for being sealed to the test box, the quantity of the probe hole are greater than the number of second pressure probe Amount.

8. soil body dynamic test device according to claim 7, it is characterised in that:

The sealing device includes interior sealing column and the external seal column that is set in outside the interior sealing column, the interior sealing column and The external seal column is connected through a screw thread, and is equipped in the interior sealing column and the external seal column and is passed through for second conducting wire Springhole, sealing-plug is equipped in the springhole.

9. soil body dynamic test device according to claim 1, it is characterised in that:

Matric suction measurement pipe, the matric suction measurement pipe and the pressure measurement mechanism are also connected on the test box Height is corresponding consistent.

10. soil body dynamic test device according to claim 1, it is characterised in that:

Fixed frame is additionally provided in the middle part of the test box, the fixed frame includes the fixation of pedestal and setting on the base Bar, the fixed link are equipped with most fixed rings, and the fixed ring is equipped with the pressure measurement mechanism.