CN101000292A - Large 3D multifunction soil tester - Google Patents
Large 3D multifunction soil tester Download PDFInfo
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- CN101000292A CN101000292A CN 200610165244 CN200610165244A CN101000292A CN 101000292 A CN101000292 A CN 101000292A CN 200610165244 CN200610165244 CN 200610165244 CN 200610165244 A CN200610165244 A CN 200610165244A CN 101000292 A CN101000292 A CN 101000292A
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Abstract
The invention relates to large scale three-dimensional multifunctional geotechnical test machine. Its feature is that it includes mainframe part and container component. The former includes main frame, level xy directional and vertical weighted platform. The level xy directional weighted platform includes two perpendicular x and y directions weighted platform. The x directional weighted platform is set the bottom, can make the upper y directional one move along the x direction by x direction servo moving machine. The y direction weighted platform can make the loading bearing platform fixed on it move along the y direction by y direction servo moving machine. The vertical weighted platform is used to supply vertical pressure. The invention has good loading ability, can realize multi geotechnical test.
Description
Technical field:
Large 3 D multifunction soil tester belongs to the mechanical property testing technical field, particularly the mechanical property testing technical field of soil and surface of contact.
Background technology:
The evaluation of soil and structure interface mechanical characteristic is the important component part during soil is studied with structural interaction, and can its rationality be related to the security that correctly estimate soil and structural system.Carrying out soil is to disclose a basic means native and the structure interface mechanical characteristic with the structure interface test, and the various countries scholar has carried out numerous researchs in this field, has developed numerous instrument and equipments.
Existing test apparatus equipment mainly contains direct shear apparatus, simple shear apparatus, torsion shear apparatus, dynamic triaxial apparatus and resonance column device etc.Wherein, staight scissors type and simple shear type surface of contact test apparatus are to improve to obtain on the basis of the direct shear apparatus of the mechanical characteristic of research soil and simple shear apparatus, are used widely in the contact face mechanical property experimental study at present.
Develop and developed a collection of equipment and the corresponding measuring technology of reproducing the contact face mechanical response that be exclusively used in recent years both at home and abroad.But existing equipment mostly is two-dimentional loading equipemtn, and the shearing at surface of contact place only can take place on a dimension.The present domestic three-dimensional load test equipment that can carry out realizing two dimensions shearings that still do not have at surface of contact.External three dimensional contact surface testing equipment mainly contains circulating three-dimensional surface of contact simple shear apparatus C3DSSI (Cyclic 3-D Simple Shear Interface apparatus, KazemFakharian 1996).But this equipment still has the following disadvantages in contact face mechanical property research: 1) vertical pressure does not act directly on the surface of contact, but act on the surface of contact indirectly by acting on the soil body, therefore the soil body and factors such as friction between the wall of container limit may cause that vertical pressure measures than mistake, and this error is difficult to demarcate in advance and elimination; 2) load capability is less, and three direction maximum load abilities of C3DSSI are 10KN; 3) the sample area is less, and maximum sectional area only is 100mm * 100mm; 4) the only energy measurement displacement of folded ring topmost of simple shear test can not measure each folded displacement that encircles; 5) function singleness only can be carried out surface of contact staight scissors, simple shear test.Because the restriction of load capability and specimen size, existing testing equipment only can carry out the test of fine grained soils such as sand, and can not be used for bigger particle diameter coarse-grained soil characteristic research.
Summary of the invention:
The objective of the invention is to, overcome the deficiencies in the prior art, a kind of large 3 D multifunction soil tester is provided, this testing machine load capability is big, can realize multiple soil test function.
The invention is characterized in, contain host machine part and container assemblies, described host machine part contains main machine frame, horizontal xy to weighted platform and vertical weighted platform;
Main machine frame contains back timber (101), column (102), base (103), and the track press strip (105) as vertical weighted platform (3) guide piece is arranged on the described column (102);
Horizontal xy comprises that to weighted platform two perpendicular x, y are to weighted platform;
Described x is positioned at bottom to weighted platform, contain the x that is fixed on the base (103) to landing slab (2101), on landing slab (2101), be fixed with x to linear rolling guide (2103) at described x, also contain with described x to the relatively-stationary x of landing slab (2101) to servo actuator (2102), described x is connected along the x direction to loading system with upper strata y to the piston rod of servo actuator (2102);
Described y is to weighted platform, contain be fixed on x to the y on the slide block of linear rolling guide (2103) to landing slab (2201), on landing slab (2201), be fixed with y to linear rolling guide (2203) at described y, also contain with described y to the fixing y of landing slab (2201) to servo actuator (2202), described y is connected along the y direction with a loading cushion cap (2206) to the piston rod of servo actuator (2202), and the bottom of described loading cushion cap (2206) is fixed on described y on the slide block of linear rolling guide (2203);
Vertical weighted platform, contain the servo actuator (301) that is fixed on the vertical placement on the described back timber (101), the piston rod below of this servo actuator (301) connects thrust articulated bearing (302), the below of this thrust articulated bearing (302) connects pressure head (305) and vertically present a theatrical performance as the last item on a programme (303) successively, in vertically present a theatrical performance as the last item on a programme (303) rolling guide supporting (304) is installed all around, when (303) piston rod with servo actuator (301) of vertically presenting a theatrical performance as the last item on a programme moved up and down, rolling guide supporting (304) moved up and down as track with the press strip (105) on the described column (102).
Press strip (2208) is housed on described base (103), is equipped with and goes up the track pulley (2207) that slides at the press strip (2208) of base (103) to the bottom of landing slab (2201) at y.Described x is connected to loading system with described y to tie-plate (2104) to pin (2105) and x by an x to the piston rod of servo actuator (2102); Described y is connected with described loading cushion cap (2206) to tie-plate (2204) to pin (2205) and y by a y to the piston rod of servo actuator (2202).
Described container assemblies is soil and structure interface direct shear test container, comprise and be fixed in the container base (5001) that loads on the cushion cap (2206), at container base (a 5001) transition disc of upper fixed (5002), on the container base (5001) of described transition disc (5002) periphery, groups of springs (5004) is housed, go up box (5003) on the placement staight scissors in described groups of springs (5004), a structural panel (5007) of fixedlying connected with described vertically present a theatrical performance as the last item on a programme (303) is placed in the top of box on the staight scissors (5003).On box (5003) on the described staight scissors, have view window (5005).
Described container assemblies is soil and structure interface simple shear test container, comprise and be fixed in the container base (5201) that loads on the cushion cap (2206), on described container base (5201), fix a structural panel (5202), placing box (5204) on folded ring group (5203) and the simple shear on the described structural panel (5202) successively, having the register pin axis hole on the box (5204) on described structural panel (5202), folded ring group (5203) and the simple shear; Also contain one and fixedly connected, and be positioned at the briquetting (5205) of box on the described simple shear (5204) with described vertically present a theatrical performance as the last item on a programme (303); Described folded ring group (5203) contains the folded ring of trough of belt (5208) and the folded ring with holes (5209) of interfolded, can be at the folded ball (5210) that roll in the groove of (5208) that encircles of trough of belt at the Kong Zhongyou of folded ring with holes (5209).
Described container assemblies is native direct shear test container, comprise and be fixed on the container base (5301) that loads on the cushion cap (2206), fix box (5302) under the native staight scissors on the described container base (5301), place box (5303) on the native staight scissors in box (5302) top under the described native staight scissors, also contain one and fixedly connected, and be positioned at the briquetting (5304) of box (5303) on the described native staight scissors with described vertically present a theatrical performance as the last item on a programme (303).
Described container assemblies is native simple shear test container, comprise and be fixed on the container base (5401) that loads on the cushion cap (2206), fix box (5402) under the native simple shear on the described container base (5401), placing box (5404) on folded ring group (5403) and the native simple shear on the box (5402) under the native simple shear successively, having the register pin axis hole on the box (5404) on box (5402), folded ring group (5403) and the native simple shear under the described native simple shear; Also contain one and fixedly connected, and be positioned at the briquetting (5405) of box (5404) on the described native simple shear with described vertically present a theatrical performance as the last item on a programme (303); Described folded ring group (5403) contains the folded ring of trough of belt (5408) and the folded ring with holes (5409) of interfolded, can be at the folded ball (5410) that roll in the groove of (5408) that encircles of trough of belt at the Kong Zhongyou of folded ring with holes (5409).
Described container assemblies is the compression concretion test chamber, contain and be fixed on the container base (5501) that loads on the cushion cap (2206), go up placement compression box (5503) at described container base (5501), also contain one and fixedly connected, and be positioned at the briquetting (5504) of described compression box (5503) with described vertically present a theatrical performance as the last item on a programme (303).Bottom placement one in described compression box (5503) has the porous disc (5502) of at least two permeable holes (5508), the lower end of described permeable hole (5508) is the water leg (5509) that connects all permeable holes (5508), a gully-hole (5506) is led in described water leg (5509) lower end, described gully-hole (5506) communicates with the passage that catchments (5507) of position, its underpart, and this passage that catchments (5507) is positioned at container base (5501) and leads to the outside.Another piece porous disc (5502) that has at least two permeable holes (5508) is also placed on top in described compression box, the upper end of described permeable hole (5508) is the water leg (5509) that connects all permeable holes (5508), a gully-hole (5506) is led in described water leg (5509) upper end, described gully-hole (5506) communicates with the passage that catchments in top (5507), and the described passage that catchments (5507) is positioned at briquetting (5504) and leads to the outside.
Described container assemblies is a stacked ring type compression concretion container, contain and be fixed on the container base (5601) that loads on the cushion cap (2206), go up the compression concretion tube that placement is made up of steel ring (5603) and rubber ring (5604) interfolded at described container base (5601), also contain with described vertically present a theatrical performance as the last item on a programme (303) and fixedly connected, be positioned at the briquetting (5605) on the compression concretion tube, on described briquetting (5605), compression concretion tube and container base (5601), have the register pin axis hole.Bottom placement one in described compression concretion tube has the porous disc (5602) of at least two permeable holes (5610), the lower end of described permeable hole (5610) is the water leg (5611) that connects all permeable holes (5610), a gully-hole (5608) is led in described water leg (5611) lower end, described gully-hole (5608) communicates with the passage that catchments (5609) of position, its underpart, and this passage that catchments (5609) is positioned at container base (5601) and leads to the outside.Another piece porous disc (5602) that has at least two permeable holes (5610) is also placed on top in described compression concretion tube, the upper end of described permeable hole (5610) is the water leg (5611) that connects all permeable holes (5610), a gully-hole (5608) is led in described water leg (5611) upper end, described gully-hole (5608) communicates with the passage that catchments in top (5609), and the described passage that catchments (5609) is positioned at briquetting (5605) and leads to the outside.
The xsect of above-mentioned all container assemblies is can be circular or square.
Evidence, the present invention can be carried out the complex stress path and load, and carry out the relevant mechanical property testing of soil, have been dealt into its intended purposes.
Description of drawings:
Fig. 1 (a) is a main frame front elevation of the present invention, and Fig. 1 (b) is the main frame top plan view, and Fig. 1 (c) is the vertical view of vertical (z to) weighted platform.
Fig. 2 (a) is square-section soil and structure interface direct shear test container wiring layout, and Fig. 2 (b) is container base figure, and Fig. 2 (c) is a box top plan view on the container staight scissors.
Fig. 3 (a) is round section soil and structure interface direct shear test container wiring layout, and Fig. 3 (b) is container base figure.
Fig. 4 (a) is soil and structure interface simple shear test container wiring layout, Fig. 4 (b) forms enlarged drawing for the folded ring group of container, and Fig. 4 (c) is a folded ring vertical view with holes, and Fig. 4 (d) is a folded ring sectional view with holes, Fig. 4 (e) is the folded ring of trough of belt vertical view, and Fig. 4 (f) is the folded ring of trough of belt sectional view.
Fig. 5 is native direct shear test container figure.
Fig. 6 (a) is native simple shear test container figure, and Fig. 6 (b) forms enlarged drawing for the folded ring group of container.
Fig. 7 (a) is a compression concretion test chamber wiring layout, and Fig. 7 (b) is a container catchment method enlarged drawing.
Fig. 8 (a) is a stacked ring type compression concretion test chamber wiring layout, and Fig. 8 (b) is a container catchment method enlarged drawing.
Embodiment:
The testing machine that the present invention proposes mainly contains host machine part and container assemblies, and host machine part contains main machine frame, horizontal xy to weighted platform and vertical (z to) weighted platform; Level to weighted platform comprise x to loading system and y to loading system, horizontal xy can finally realize loading cushion cap carries out any track in surface level motion to weighted platform, horizontal xy is fixed in the bottom of main machine frame to weighted platform.Vertically (z to) weighted platform is positioned at the top in main machine frame.But at 3 loading system connected load sensors and displacement transducer, with the measurement of carrying out loading force and displacement and be used for FEEDBACK CONTROL.When carrying out dissimilar test, corresponding displacement transducer is installed, measurement that is used to test and control.When testing, the cell therefor assembly is fixed on the loading cushion cap, soil sample is put into test chamber, setting control system can be tested.
Accompanying drawings the specific embodiment of the present invention.
Shown in Fig. 1 (a) and (b), (c), the present invention contains host machine part and container assemblies, and described host machine part contains main machine frame, horizontal xy to weighted platform and vertical weighted platform.
Main machine frame comprises back timber 101, column 102, base 103, connects by big nut 104 between column 102 and back timber 101, the base 103, and press strip 105 is arranged on the column, as the track of vertical (z to) weighted platform guide piece.There is leg 106 both sides of base, play a supporting role.
Horizontal xy comprises two orthogonal weighted platforms to weighted platform.Definition bottom weighted platform be x to weighted platform, the upper strata weighted platform is that y is to weighted platform.X to weighted platform comprise x to landing slab 2101, x to servo actuator 2102, x to linear rolling guide 2103, x to tie-plate 2104, x to pin 2105, x to set bolt 2106.X is connected on the main frame base 103 to set bolt 2106 by x to landing slab 2101, x to linear rolling guide 2103 usefulness bolt to x on landing slab 2101, x is fixed in x (or be in x to landing slab 2101 relatively-stationary positions) on landing slab 2101 to servo actuator 2102, and its piston rod is connected to loading system with y to tie-plate 2104 to pin 2105 and x by x.
Y to weighted platform comprise y to landing slab 2201, y to servo actuator 2202, y to linear rolling guide 2203, y to tie-plate 2204, y to pin 2205, load cushion cap 2206, track pulley 2207, press strip 2208.Y to landing slab 2201 usefulness bolt in x on the slide block of linear rolling guide 2103, y all is equipped with track pulley 2207 to the bottom at landing slab 2201 two ends, slides on the press strip 2208 that is fixed on the leg 106.Y to linear rolling guide 2203 usefulness bolt to y on landing slab 2201, y is fixed in y on landing slab 2201 to servo actuator 2202, its piston rod by y to pin 2205 and y to tie-plate 2204 with load cushion cap 2206 and be connected.Load cushion cap 2206 and be fixed in y on the slide block of linear rolling guide 2203.With y when pin 2205 is extracted, load cushion cap 2206 and can haul out to the testing machine outside, carry out sample preparation work.When x drives y to landing slab 2201 motions to servo actuator 2102 motion, y to landing slab 2201 by y to linear rolling guide 2203 drive load cushion caps 2206 along x to moving.Y is when servo actuator 2202 motions, and drive loading cushion cap to moving, reaches the decomposition that loads cushion cap 2206 motion xy directions along y thus, makes loading cushion cap 2206 to move along arbitrary curve in surface level, realizes complicated load path.Load on the cushion cap 2206 and have pilot hole 2209, be used for the installing and locating of container assemblies.
Vertically (z to) weighted platform comprise the servo actuator 301, thrust articulated bearing 302 of vertical placement, vertically present a theatrical performance as the last item on a programme 303, rolling guide supporting 304, pressure head 305.Vertical servo actuator 301 303 is connected with vertically presenting a theatrical performance as the last item on a programme by thrust articulated bearing 302 and pressure head 305, vertically presents a theatrical performance as the last item on a programme rolling guide to be installed around 303 and to support 304, and rolling guide supports 304 and provides tracks by the press strip 105 that is fixed on the column 102.Rolling guide supporting 304 has the effect of motion guide, guarantees the maintenance level strictly in the process of moving up and down of presenting a theatrical performance as the last item on a programme, not run-off the straight, and the 303 suffered levels of vertically presenting a theatrical performance as the last item on a programme to force transmission to column 102.Vertically presenting a theatrical performance as the last item on a programme has pilot hole 306 on 303, is used for the installing and locating of container assemblies.
Can on testing machine, install x to load sensor 401, x to displacement transducer 402, y to load sensor 403, y to displacement transducer 404, vertical (z to) load sensor 405, vertical (z to) displacement transducer 406, can the installation position displacement sensor on test chamber, and necessary signal amplifies, data collection computer system.
Container assemblies is according to different experimental use, can be divided into square-section soil and structure interface direct shear test container, round section soil and structure interface direct shear test container, soil and structure interface simple shear test container, soil direct shear test container, native simple shear test container, compression concretion test chamber, stacked ring type compression concretion test chamber is introduced respectively below.
Square-section soil and structure interface direct shear test container comprise box 5003, groups of springs 5004, plexiglass block 5005, locating piece 5006, structural panel 5007 on container base 5001, transition disc 5002, the staight scissors shown in Fig. 2 (a) and (b), (c).To container base 5001, box 5003 is placed on transition disc 5002 groups of springs 5004 all around transition disc 5002 on the staight scissors by bolt.Box on the groups of springs supporting staight scissors, and provide box to follow the space that moves up and down owing to the surface of contact volume change.The surface of contact volume change will be condensed to the master to cut during test, reserve bigger compression stroke when therefore designing.Have view window on the box 5003 on the staight scissors, lay plexiglass block 5005, be used to observe soil and soil particle motion and the states of matter situation of change of the structure interface place soil body when shearing.Container base 5001 is installed to by locating piece 5006 and loads on the cushion cap 2206, moves with loading cushion cap.Structural panel 5007 to vertically presenting a theatrical performance as the last item on a programme on 303, provides the different roughness structural plane by locating piece 5006 installing and locating.During test on staight scissors box 5003 and 5007 of structural panels lay displacement transducer, relative displacement data of 5007 of box 5003 and structural panels on the survey record staight scissors, and be used for the servo FEEDBACK CONTROL of hydraulic system.Vertically presenting a theatrical performance as the last item on a programme of the principle of work of test is, vertical (z to) weighted platform 303 applies normal pressure to surface of contact by structural panel 5007, and locating piece 5006 constraints live in the horizontal xy of structural panel 5007 to displacement.Box 5003 is along with loading cushion cap 2206 at horizontal in-plane moving on container base 5001, transition disc 5002 and the staight scissors, thereby the soil body in the container is sheared with the surface of contact of structural panel 5007 compositions.By control loaded cushion cap 2206 different mode of motion taking place can realize complicated loading such as dullness, circulation.According to the difference of test material, can design the test chamber of different big or small sectional dimensions, satisfy the needs of test.
Round section soil and structure interface direct shear test container are shown in Fig. 3 (a) and (b), and its structure is except that xsect is rounded, and other structure is all identical with structure interface direct shear test container with square-section soil, and principle of work is also identical.It comprises box 5103, groups of springs 5104, locating piece 5105, structural panel 5106 on container base 5101, transition disc 5102, the staight scissors.To container base 5101, box 5103 is placed on transition disc 5102 groups of springs 5104 all around transition disc 5102 on the staight scissors by bolt.Box and provide box to follow the space that moves up and down owing to the surface of contact volume change on the groups of springs supporting staight scissors.During test on staight scissors box 5103 and 5106 of structural panels lay displacement transducer, relative displacement data of 5106 of box 5103 and structural panels on the survey record staight scissors, and be used for the servo FEEDBACK CONTROL of hydraulic system.According to the difference of test material, can design the test chamber of different big or small sectional dimensions, satisfy the needs of test.
Soil and structure interface simple shear test container comprise box 5204, briquetting 5205, register pin 5206, locating piece 5207 on container base 5201, structural panel 5202, folded ring group 5203, the simple shear shown in Fig. 4 (a) and (b), (c), (d), (e), (f).Container is circle or square-section.Structural panel 5202 is placed in the container base 5201, and folded ring group 5203 is positioned over above the structural panel 5202, lays box 5204 on the simple shear on it.Folded ring group 5203 is made up of the folded ring 5208 of trough of belt, folded ring 5209 with holes and ball 5210.Folded ring 5208 of trough of belt and folded ring 5209 interfolded with holes, ball are placed 5210 and are placed in the hole of folded ring 5209 with holes, can slide in the groove 5211 of the folded ring 5208 of trough of belt.During the mutual changing of the relative positions of folded ring, drive ball and roll, thereby the friction force of folded interannular is very little, make that each folded interannular can the free changing of the relative positions mutually.Briquetting 5205 places box 5204 on the simple shear, and top 303 is connected with vertically presenting a theatrical performance as the last item on a programme by locating piece 5207, and the soil body and soil and structure interface are applied normal pressure.Fix the position of folded ring group 5203 before the test by register pin 5206, the soil body of packing into carries out sample preparation.During test register pin 5206 is extracted, made folded ring group 5203 each folded interannular the free changing of the relative positions mutually carry out the surface of contact simple shear test.Container base 5201 passes through locating piece 5207 installing and locating in loading on the cushion cap 2206.During test on simple shear box 5204 and 5202 of structural panels lay displacement transducer, survey record displacement data, and be used for the servo FEEDBACK CONTROL of hydraulic system.
Soil direct shear test container comprises under container base 5301, the native staight scissors box 5303, briquetting 5304, locating piece 5305 on box 5302, the native staight scissors as shown in Figure 5.Container is circle or square-section.Box 5302 is placed in the container base 5301 under the soil staight scissors, and box 5303 places under the native staight scissors on the box 5302 on the native staight scissors.Briquetting 5304 places box 5303 on the native staight scissors, and top 303 is connected with vertically presenting a theatrical performance as the last item on a programme by locating piece 5305, and the soil body is applied normal pressure.Container base 5301 passes through locating piece 5305 installing and locating in loading on the cushion cap 2206.In the process of the test on box 5302 under the native staight scissors and native staight scissors 5303 in box lay displacement transducer, survey record test figure, and be used for the servo FEEDBACK CONTROL of hydraulic system.
Soil simple shear test container comprises box 5404, briquetting 5405, register pin 5406, locating piece 5407 on box 5402 under container base 5401, the native simple shear, folded ring group 5403, the native simple shear shown in Fig. 6 (a) and (b).Container is circle or square-section.Box 5402 is placed in the container base 5401 under the soil simple shear, is placed with folded ring group 5403 on it.Box 5404 is positioned on the folded ring group 5403 on the soil simple shear, and briquetting 5405 places box 5404 on the native simple shear, and top 303 is connected with vertically presenting a theatrical performance as the last item on a programme by locating piece 5405, and the soil body is applied normal pressure.Fix the position of folded ring group 5403 before the test by register pin 5406, the soil body of packing into carries out sample preparation.During test register pin 5406 is extracted, made folded ring group 5403 each folded interannular the free changing of the relative positions mutually carry out native simple shear test.Container base 5401 passes through locating piece 5407 installing and locating in loading on the cushion cap 2206.During test on box 5402 under the native simple shear and native simple shear 5404 in box lay displacement transducer, survey record displacement data, and be used for the servo FEEDBACK CONTROL of hydraulic system.By the sectional dimension of appropriate design container, it is 5203 measure-alike that folded ring group 5403 and soil and the folded ring in the structure interface simple shear test container are organized, and can reuse.
The compression concretion test chamber comprises container base 5501, porous disc 5502, compression box 5503, briquetting 5504, locating piece 5505 shown in Fig. 7 (a) and (b).Container is a round section.Compression box 5503 places container base 5501, and a porous disc 5502 is laid in the bottom in the box.Have gully-hole 5506 on the container base 5501 and the passage 5507 that catchments, have permeable hole 5508 on the porous disc, have water leg 5509 on the container base gully-hole 5506 is led in permeable hole 5508 connections, water is pooled to 5506 backs and flows out by the passage 5507 that catchments, and water can be collected and measurement volumes.Briquetting 5504 places compression box 5503, and top 303 is connected with vertically presenting a theatrical performance as the last item on a programme by locating piece 5405, and the soil body is applied normal pressure.Container base 5501 passes through locating piece 5505 installing and locating in loading on the cushion cap 2206.Its top also can be provided with water permeable device, specifically can be with reference to the water permeable device on the top of stacked ring type compression concretion container shown in Figure 8.
Stacked ring type compression concretion container comprises container base 5601, porous disc 5602, steel ring 5603, rubber ring 5604, briquetting 5605, register pin 5606, locating piece 5607 shown in Fig. 8 (a) and (b).Steel ring 5603 and rubber ring 5604 stacked composition compression concretion tubes, porous disc 5602 places compression concretion tube on the container base 5601.Have water leg 5611, gully-hole 5608 and the passage 5609 that catchments on the container base 5601, have permeable hole 5610 on the porous disc, the method for the volume of collection and measurement water is identical with the compression concretion container.Briquetting 5605 places on the compression concretion tube, and top 303 is connected with vertically presenting a theatrical performance as the last item on a programme by locating piece 5607, to the soil body normal pressure of exerting pressure.Can place a porous disc 5602 again below the briquetting 5605, realize two-sided discharging consolidation condition.Have water leg 5611, gully-hole 5608 and the passage 5609 that catchments on the briquetting 5605, water can be collected and measurement volumes.Container base 5601 passes through locating piece 5607 installing and locating in loading on the cushion cap 2206.Briquetting 5605 compresses the compression concretion tube and the soil body together during test, and the mutual motion between the soil body and the consolidation container is less like this, can effectively overcome the influence of limit wall friction to test findings.
Package unit can adopt electrohydraulic servo-controlling system to control, and mainly comprises conventional A/D and D/A change-over panel, computing machine and electro-hydraulic servo control case.Computing machine is connected with the electro-hydraulic servo control case with D/A change-over panel and serial port by A/D.Can design electrohydraulic servo-controlling system and realize 3 tunnel servo closed-loop controls.The first via be x to Loading Control, can on servo actuator 2102, load onto x at x to electrohydraulic servo valve, the electro-hydraulic servo control case is connected with this valve; The second the tunnel be y to Loading Control, can on servo actuator 2202, load onto y at y to electrohydraulic servo valve, the electro-hydraulic servo control case is connected with this valve; Third Road is vertical (z to) Loading Control, can load onto z to electrohydraulic servo valve on servo actuator 301 at z, and the electro-hydraulic servo control case is connected with this valve.Can adopt traditional hydraulic power source that pressure is provided.The hydraulic power source flow calculates definite according to the requirement of the load capability of testing machine, loading speed, loading frequency.
The invention has the beneficial effects as follows: be two motions on the mutually perpendicular direction with the Kinematic Decomposition in the horizontal plane 1., can make Load any orbiting motion in cushion cap and test chamber edge in horizontal plane, finish the test in complex loading mode, complex stress path Reappear; 2. loading system adopts servo-control system, and all directions can be controlled separately, also can three direction couplings control, Can realize complicated loading requirement, better simulate Practical Project; 3. can carry out the test of several functions large geotechnical, only need Change necessary test chamber, accomplish a tractor serves several purposes, improve the testing machine utilization ratio, and saved cost; 4. realize bigger Load capability (vertical 800kN, horizontal both direction 400kN), bigger sample sectional area (maximum sample sectional dimension is arranged Be 500mm * 500mm), can test the coarse-grained soil specimen of greater particle size; 5. being implemented in three-dimensional soil contacts with structure In the face direct shear test, vertical pressure directly acts on the contact-making surface, thus the measurement mistake of avoiding friction native and container inner wall to cause Difference.
Claims (15)
1, large 3 D multifunction soil tester is characterized in that, contains host machine part and container assemblies, and described host machine part contains main machine frame, horizontal xy to weighted platform and vertical weighted platform;
Main machine frame contains back timber (101), column (102), base (103), and the track press strip (105) as vertical weighted platform (3) guide piece is arranged on the described column (102);
Horizontal xy comprises that to weighted platform two perpendicular x, y are to weighted platform;
Described x is positioned at bottom to weighted platform, contain the x that is fixed on the base (103) to landing slab (2101), on landing slab (2101), be fixed with x to linear rolling guide (2103) at described x, also contain with described x to the relatively-stationary x of landing slab (2101) to servo actuator (2102), described x is connected along the x direction to loading system with upper strata y to the piston rod of servo actuator (2102);
Described y is to weighted platform, contain be fixed on x to the y on the slide block of linear rolling guide (2103) to landing slab (2201), on landing slab (2201), be fixed with y to linear rolling guide (2203) at described y, also contain with described y to the fixing y of landing slab (2201) to servo actuator (2202), described y is connected along the y direction with a loading cushion cap (2206) to the piston rod of servo actuator (2202), and the bottom of described loading cushion cap (2206) is fixed on described y on the slide block of linear rolling guide (2203);
Vertical weighted platform, contain the servo actuator (301) that is fixed on the vertical placement on the described back timber (101), the piston rod below of this servo actuator (301) connects thrust articulated bearing (302), the below of this thrust articulated bearing (302) connects pressure head (305) and vertically present a theatrical performance as the last item on a programme (303) successively, in vertically present a theatrical performance as the last item on a programme (303) rolling guide supporting (304) is installed all around, when (303) piston rod with servo actuator (301) of vertically presenting a theatrical performance as the last item on a programme moved up and down, rolling guide supporting (304) moved up and down as track with the press strip (105) on the described column (102).
2, large 3 D multifunction soil tester as claimed in claim 1; it is characterized in that; press strip (2208) is housed on described base (103), is equipped with and goes up the track pulley (2207) that slides at the press strip (2208) of base (103) to the bottom of landing slab (2201) at y.
3, large 3 D multifunction soil tester as claimed in claim 1 is characterized in that, described x is connected to loading system with described y to tie-plate (2104) to pin (2105) and x by an x to the piston rod of servo actuator (2102); Described y is connected with described loading cushion cap (2206) to tie-plate (2204) to pin (2205) and y by a y to the piston rod of servo actuator (2202).
4, large 3 D multifunction soil tester as claimed in claim 1, it is characterized in that, described container assemblies is soil and structure interface direct shear test container, comprise and be fixed in the container base (5001) that loads on the cushion cap (2206), at container base (a 5001) transition disc of upper fixed (5002), on the container base (5001) of described transition disc (5002) periphery, groups of springs (5004) is housed, go up box (5003) on the placement staight scissors in described groups of springs (5004), a structural panel (5007) of fixedlying connected with described vertically present a theatrical performance as the last item on a programme (303) is placed in the top of box on the staight scissors (5003).
5, large 3 D multifunction soil tester as claimed in claim 4 is characterized in that, has view window (5005) on box (5003) on the described staight scissors.
6, large 3 D multifunction soil tester as claimed in claim 1, it is characterized in that, described container assemblies is soil and structure interface simple shear test container, comprise and be fixed in the container base (5201) that loads on the cushion cap (2206), on described container base (5201), fix a structural panel (5202), placing box (5204) on folded ring group (5203) and the simple shear on the described structural panel (5202) successively, having the register pin axis hole on the box (5204) on described structural panel (5202), folded ring group (5203) and the simple shear; Also contain one and fixedly connected, and be positioned at the briquetting (5205) of box on the described simple shear (5204) with described vertically present a theatrical performance as the last item on a programme (303); Described folded ring group (5203) contains the folded ring of trough of belt (5208) and the folded ring with holes (5209) of interfolded, can be at the folded ball (5210) that roll in the groove of (5208) that encircles of trough of belt at the Kong Zhongyou of folded ring with holes (5209).
7, large 3 D multifunction soil tester as claimed in claim 1, it is characterized in that, described container assemblies is native direct shear test container, comprise and be fixed on the container base (5301) that loads on the cushion cap (2206), fix box (5302) under the native staight scissors on the described container base (5301), place box (5303) on the native staight scissors in box (5302) top under the described native staight scissors, also contain one and fixedly connected, and be positioned at the briquetting (5304) of box (5303) on the described native staight scissors with described vertically present a theatrical performance as the last item on a programme (303).
8, large 3 D multifunction soil tester as claimed in claim 1, it is characterized in that, described container assemblies is native simple shear test container, comprise and be fixed on the container base (5401) that loads on the cushion cap (2206), fix box (5402) under the native simple shear on the described container base (5401), placing box (5404) on folded ring group (5403) and the native simple shear on the box (5402) under the native simple shear successively, having the register pin axis hole on the box (5404) on box (5402), folded ring group (5403) and the native simple shear under the described native simple shear; Also contain one and fixedly connected, and be positioned at the briquetting (5405) of box (5404) on the described native simple shear with described vertically present a theatrical performance as the last item on a programme (303); Described folded ring group (5403) contains the folded ring of trough of belt (5408) and the folded ring with holes (5409) of interfolded, can be at the folded ball (5410) that roll in the groove of (5408) that encircles of trough of belt at the Kong Zhongyou of folded ring with holes (5409).
9, large 3 D multifunction soil tester as claimed in claim 1, it is characterized in that, described container assemblies is the compression concretion test chamber, contain and be fixed on the container base (5501) that loads on the cushion cap (2206), go up placement compression box (5503) at described container base (5501), also contain one and fixedly connected, and be positioned at the briquetting (5504) of described compression box (5503) with described vertically present a theatrical performance as the last item on a programme (303).
10, large 3 D multifunction soil tester as claimed in claim 9, it is characterized in that, bottom placement one in described compression box (5503) has the porous disc (5502) of at least two permeable holes (5508), the lower end of described permeable hole (5508) is the water leg (5509) that connects all permeable holes (5508), a gully-hole (5506) is led in described water leg (5509) lower end, described gully-hole (5506) communicates with the passage that catchments (5507) of position, its underpart, and this passage that catchments (5507) is positioned at container base (5501) and leads to the outside.
11, large 3 D multifunction soil tester as claimed in claim 9, it is characterized in that, another piece porous disc (5502) that has at least two permeable holes (5508) is also placed on top in described compression box, the upper end of described permeable hole (5508) is the water leg (5509) that connects all permeable holes (5508), a gully-hole (5506) is led in described water leg (5509) upper end, described gully-hole (5506) communicates with the passage that catchments in top (5507), and the described passage that catchments (5507) is positioned at briquetting (5504) and leads to the outside.
12, large 3 D multifunction soil tester as claimed in claim 1, it is characterized in that, described container assemblies is a stacked ring type compression concretion container, contain and be fixed on the container base (5601) that loads on the cushion cap (2206), go up the compression concretion tube that placement is made up of steel ring (5603) and rubber ring (5604) interfolded at described container base (5601), also contain with described vertically present a theatrical performance as the last item on a programme (303) and fixedly connected, be positioned at the briquetting (5605) on the compression concretion tube, in described briquetting (5605), compression concretion tube and container base have the register pin axis hole on (5601).
13, large 3 D multifunction soil tester as claimed in claim 12, it is characterized in that, bottom placement one in described compression concretion tube has the porous disc (5602) of at least two permeable holes (5610), the lower end of described permeable hole (5610) is the water leg (5611) that connects all permeable holes (5610), a gully-hole (5608) is led in described water leg (5611) lower end, described gully-hole (5608) communicates with the passage that catchments (5609) of position, its underpart, and this passage that catchments (5609) is positioned at container base (5601) and leads to the outside.
14, large 3 D multifunction soil tester as claimed in claim 12, it is characterized in that, another piece porous disc (5602) that has at least two permeable holes (5610) is also placed on top in described compression concretion tube, the upper end of described permeable hole (5610) is the water leg (5611) that connects all permeable holes (5610), a gully-hole (5608) is led in described water leg (5611) upper end, described gully-hole (5608) communicates with the passage that catchments in top (5609), and the described passage that catchments (5609) is positioned at briquetting (5605) and leads to the outside.
As claim 4,6,7,8,9 or 12 described large 3 D multifunction soil testers, it is characterized in that 15, the xsect of described container assemblies is circular or square.
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| CN200610165244A CN100582732C (en) | 2006-12-15 | 2006-12-15 | Large 3D multifunction soil tester |
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| CN200610165244A CN100582732C (en) | 2006-12-15 | 2006-12-15 | Large 3D multifunction soil tester |
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