CN205562300U - Built -in soil pressure model test device of barricade - Google Patents
Built -in soil pressure model test device of barricade Download PDFInfo
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- CN205562300U CN205562300U CN201620379706.8U CN201620379706U CN205562300U CN 205562300 U CN205562300 U CN 205562300U CN 201620379706 U CN201620379706 U CN 201620379706U CN 205562300 U CN205562300 U CN 205562300U
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Abstract
The utility model discloses a built -in soil pressure model test device of barricade, box are an uncovered cuboid, leave two rectangle openings on the box curb plate, and the rectangle opening welds the spout outward, and the slider is placed by central authorities in the spout, and the jack is connected to the slider, and the jack welds on the jack pedestal. Connect steel pole one end and insert the slider, connect the steel pole other end and rigidity barricade rigid connection. The elastic steel sheet welding is on the slider. Be filled with the soil body in the box, flexible load water pocket is placed to soil body upper surface, and vertical bearing plate is fixed on the box top. Film formula pressure sensor presses the probe to lay respectively on rigidity barricade leading flank and trailing flank with the hole, installation displacement sensor in the spout. The device studies the rigidity barricade simultaneously and takes place the initiative under the different displacement models, passive earth pressure distribution law's needs, to the theoretical development of soil pressure under having satisfied different ground load conditions to and the improvement of engineering technical merit is significant.
Description
Technical field
The utility model relates to architectural and civil engineering experimental test technical field, particularly relate to a kind of barricade built-in Earth Pressure Models experimental rig, it is applicable to simulate the active and passive soil pressure calculation under rigid retaining walls difference displacement model simultaneously, is also applied for simulating the rigid retaining walls soil pressure calculation under different loading condition.
Background technology
The soil-baffling structure such as many structures such as retaining wall, abutment, foundation pit enclosure structures in civil engineering, all support the soil body, remain soil stabilization, they often subject the effect of soil body lateral pressure, in order to carry out soil pressure correlation theory research, need the experimental rig of a set of perfect in shape and function to carry out the laboratory physical analogy of soil pressure.
At present, widely used in current engineering practice soil pressure evaluation method is still coulomb (Coulomb) based on limit equilibrium theory and the earth pressure theory of Rankine (Rankine) and based on the theoretical Mononobe-Okabe earthquake earth pressure formula with quasi-static model concept of coulomb sliding wedge.Classical earth pressure theory all assumes that the displacement of barricade is sufficiently large, rolling earth behind retaining wall can be made to have the initiative or passive limiting condition, rolling earth behind retaining wall can only be calculated have the initiative and soil pressure during passive limiting condition, not take into full account the retaining wall displacement impact on soil pressure.But the soil pressure in Practical Project is the soil body and the result of the interphase interaction of soil-baffling structure, the different wall movement mode of soil-baffling structure, characteristics of deformation and strength all sizes and the regularity of distribution on soil pressure of the soil body produce impact.In many Practical Projects, it is possible to the body of wall displacement making rolling earth behind retaining wall reach passive state of limit equilibrium usually will not occur, a certain value that soil pressure is probably between active earth pressure and passive earth pressure.
Many hypothesis that traditional design theory is used all avoid load-bearing body and soil body INTERACTION PROBLEMS to some extent, hence in so that laterally load-bearing side Calculating method of earth pressure is theoretically unsound, there is many hypothesis and uncertainty in design parameter, therefore, it is necessary to study the displacement of barricade, that is the lateral deformation banketed, on soil pressure size and the impact of the regularity of distribution.
Model test is to disclose soil pressure with lateral diaphragm wall displacement Change and Development rule and the powerful of checking earth pressure theory.For solving the problems referred to above, develop a kind of barricade built-in Earth Pressure Models experimental rig, the active and passive soil pressure calculation under rigid retaining walls difference displacement model can be completed simultaneously, in engineering, during for design soil-baffling structure, preferably determining the character of soil pressure, size, direction and application point, for the development of earth pressure theory, and the raising of engineering level is the most significant.
Utility model content
The purpose of this utility model is for the structures that subject soil body lateral pressure in civil engineering, it is to there are provided a kind of barricade built-in Earth Pressure Models experimental rig, rational in infrastructure, easy to operate, efficient economizing, excellent performance, meet under Different Ground loading condition, rigid retaining walls occurs the research of soil pressure distribution regular under different displacement model to need, and for the development of earth pressure theory, and the raising of engineering level is significant.
For solving the problems referred to above, the utility model uses techniques below measure to be attained in that
A kind of barricade built-in Earth Pressure Models experimental rig, it is made up of casing, top shoe, sliding block, upper hopper chute, gliding groove, upper jack, lower jack, rigid retaining walls, vertical bearing plate, the flexible parts such as water pocket, thin-film pressure sensor, pore pressure probe, displacement transducer that load.
It is characterized in that: casing is a long 3m, the uncovered rectangular-shaped container of steel of wide 1.2m, high 1.5m, casing is welded by the shaped steel such as channel-section steel, I-steel, to ensure sufficiently large rigidity.
Described casing back side panel lower central welds water inlet pipe away from lower at 10 ~ 15cm, water inlet pipe is as soil body moisture input channel in test, cabinet front plate center upper portion away from along welding blast pipe at 10 ~ 15cm, blast pipe is as air discharging channel in the soil body in test.
Described box house is close to front side board and back side panel inwall respectively places one block of porous plate, porous plate is away from cabinet front plate and back side panel 1 ~ 2cm, and it is parallel with cabinet front plate and back side panel, porous plate width is identical with casing width, little 8 ~ the 10cm of aspect ratio box height of porous plate, this height loads the full water height of water pocket slightly larger than flexibility, it is ensured that the flexible loading space loading water pocket.
The left and right box side plate gauge lattice of described casing are identical, two rectangular apertures are all left on left and right box side, the longitudinal axis level of rectangular aperture, upper rectangular aperture central point is positioned on the vertical axis of box side at 2/3 height, lower rectangular aperture central point is positioned on the vertical axis of box side at 1/3 height, upper rectangular aperture length 20 ~ 25cm, high 8 ~ 10cm, lower rectangular aperture length 20 ~ 25cm, high 4 ~ 6cm.
It is respectively welded upper hopper chute and gliding groove on lateral wall at the upper rectangular aperture of described box side and lower rectangular aperture, the open face of upper hopper chute and gliding groove is towards the corresponding rectangular aperture on box side, and the front side wall of upper hopper chute and gliding groove has penetrability cylindrical hole A and penetrability cylindrical hole B；In upper hopper chute, top shoe is placed by central authorities, and the piston rod of upper jack, through the penetrability cylindrical hole A of upper hopper chute front side wall, is connected with top shoe leading flank center by ball pivot, and upper very heavy top solder is on upper very heavy roof platform seat；In gliding groove, sliding block is placed by central authorities, the piston rod of lower jack passes the penetrability cylindrical hole B of gliding groove front side wall, it is connected with the leading flank center of sliding block by ball pivot, lower jack is welded on lower jack pedestal, and upper very heavy roof platform seat and lower jack pedestal are respectively welded at outer wall 2/3 height of box side leading section and at 1/3 height.
Described upper hopper chute and gliding groove are uncovered spill cell body, the axis of upper hopper chute and gliding groove keeps level, uncovered towards casing, in upper hopper chute, sky a size of grows 60 ~ 80cm, wide 10 ~ 12cm, high 12 ~ 15cm, the center of upper hopper chute open face overlaps in vertical plane with the upper rectangular aperture center of box side；In gliding groove, sky a size of grows 60 ~ 80cm, wide 10 ~ 12cm, high 10 ~ 12cm, and the center of gliding groove open face overlaps in vertical plane with the lower rectangular aperture center of box side.
Described top shoe and sliding block are all that the width of steel cuboid, top shoe or sliding block and height are compared with upper hopper chute or gliding groove inner space width and the corresponding little 1mm of height.
Described top shoe has the vertical notch D of a degree of depth about 5 ~ 6cm towards the side of casing at center car, and notch D flat shape is that rectangle combines with upper and lower two semicircles, and the width of notch D connects the big 1mm of steel pole external diameter compared with upper, and the height of notch D is 9 ~ 10cm；Sliding block is drilled with the cylindrical hole C of a degree of depth about 5 ~ 6cm towards the side of casing in center, and the internal diameter of cylindrical hole C is compared with the lower big 1mm of external diameter connecting steel pole.
Described jack pedestal is long and the wide shape steel plate being 15 ~ 16cm, has four, and each welding two on right case side plate, jack pedestal is vertical with box side and parallel with cabinet front plate.
One end of described upper connection steel pole is inserted directly in the vertical notch D of top shoe, and the other end of upper connection steel pole is rigidly connected with rigid retaining walls；One end of lower connection steel pole is inserted directly in the cylindrical hole C of sliding block, and the other end of lower connection steel pole is rigidly connected with rigid retaining walls.The bottom of cylindrical hole C has the rectangular-shaped pore of diameter 3cm from center, after pore extends 2 ~ 3cm along cylindrical hole C bottom, occurs 90 ° and turns to and pass from sliding block trailing flank obliquely.Upper connection steel pole and lower connection steel pole are length 8 ~ 10cm, the steel hollow cylinder of external diameter 40 ~ 50mm, internal diameter 20mm, and upper connection steel pole and lower connection steel pole insert the degree of depth of top shoe and sliding block and be 45 ~ 55mm.
Described upper elastic steel sheet and lower elastic steel sheet are respectively welded at top shoe and sliding block towards on the side of casing, the upper rectangular aperture of the most corresponding box side of its installation site and lower rectangular aperture.Top shoe is respectively welded elastic steel sheet on two on the both sides of upper connection steel pole, and sliding block is respectively welded two lower elastic steel sheets on the both sides of lower connection steel pole.Upper elastic steel sheet and lower elastic steel sheet are thickness 1 ~ 2mm, the stalloy of length 20 ~ 25cm, the little 1 ~ 2mm of height of the upper rectangular aperture of upper elastic steel sheet aspect ratio box side, the little 1 ~ 2mm of height of the lower rectangular aperture of lower elastic steel sheet aspect ratio box side.Elastic steel sheet can cover the rectangular aperture on box side in slide block sliding process, prevents sample from leaking in chute.
Being filled with the soil body in described casing, soil body upper surface level, away from casing top 5 ~ 6cm；Rigid retaining walls is vertically embedded in the soil body, and soil body upper surface exceedes more than rigid retaining walls 15cm.Soil body upper surface horizontal positioned flexibility loads water pocket, the vertical bearing plate of horizontal positioned on flexible loading water pocket, vertical bearing plate is bolted to connection on casing top, arranges sealant tape in vertical bearing plate and casing contact site, prevents moisture in the soil body from oozing out.Loading water pocket by flexibility in test to pressurize, simulate soil body surface vertical load, the flexible water pocket that loads can realize loading to soil body flexibility, it is ensured that uniform force, reduces test error.
Described respectively lays a cluster film formula pressure sensor at the vertical axis of rigid retaining walls leading flank and trailing flank, two pore pressure probes of each laying on rigid retaining walls leading flank and trailing flank, at upper hopper chute and gliding groove Internal back end, one displacement transducer is respectively installed, displacement transducer horizontal positioned, displacement transducer push rod head directly withstands on the trailing flank center of top shoe or sliding block.
Described rigid retaining walls is the combined steel plate that the steel plate of thickness about 10 ~ 15cm is made with shaped steel, and rigid retaining walls is the Thick Hollow shape structure that there is rigid support inside, the little about 6 ~ 10mm of rigid retaining walls width ratio casing width, the most about 90 ~ 100cm.
Described lower connection steel pole end seal connects a hollow hoses, hose diameter 2cm, flexible pipe passes sliding block by the pore of cylindrical hole C bottom from trailing flank in sliding block, by the boring in the position of gliding groove rear wall lower middle, flexible pipe is passed gliding groove, lay sealing ring between flexible pipe and gliding groove, prevent water loss.The data wire that thin-film pressure sensor and pore pressure probe are connected, is entered inside rigid retaining walls by perforate in rigid retaining walls, passes casing via lower connection steel pole and flexible pipe, at experiment test devices such as external connection Acquisition Instruments.
Described displacement transducer is holed from the rear wall of upper hopper chute or gliding groove and is passed, and lays sealing ring, prevent from leaking between displacement transducer and upper hopper chute or gliding groove.
The utility model compared with prior art, has the following advantages and effect:
1) device can realize soil-baffling structure translation, rotate around top, around multiple different displacement models such as lower rotation, and be accurately controlled translation displacements and rotation displacement, angle, thus test the distribution situation of soil pressure under various operating mode；
2) device is provided with vertical bearing plate and the flexible vertical pressue device loading water pocket composition, on the one hand, can realize and preferably simulate the soil pressure under ground load effect；On the other hand, for such as cohesive soil, the soil body itself has certain self-reliance, in the test of conventional operating mode, its active earth pressure is difficult to play, and now the overlying burden of soil body surface has driving effect to the performance of its active earth pressure, to be obtained the mechanical property of such soil by test.
3) relative to existing soil pressure calculation device, simulation barricade drive system, i.e. jack and piston rod are passed through slide block transition by this device, are transferred to outside model casing and the soil body, reduce disturbance and test error that drive load brings, more really reflection Earth Pressure of Retaining Wall test result to the soil body；
4) device passes through the built-in barricade of the soil body, can be completed the test of soil body active earth pressure and passive earth pressure by single test simultaneously, be greatly saved manpower and materials cost and testing efficiency；
5) device is provided with water inlet pipe, blast pipe and porous plate, it is achieved apply water pressure in the soil body, can complete the simulation of soil pressure under the conditions of different seepage flow；
6) by the promotion of jack inequality, overall active earth pressure, the distribution of passive earth pressure can be studied, and top (bottom) soil body bears active earth pressure and bottom (top) soil body bears the regular discussion of special operation condition of passive earth pressure；
Applicant utilizes this device to carry out barricade active earth pressure and passive earth pressure test, find the uniformity (see Fig. 6, Fig. 7) that all actual with the engineering holding of soil pressure calculation result is higher, preferably reflect barricade active earth pressure and passive earth pressure distribution feature and Changing Pattern, meet the demand of Earth Pressure Models test.
This barricade built-in Earth Pressure Models experimental rig, by barricade is placed in inside soil body, simulation Earth Pressure of Retaining Wall plane strain problems, the test of the active and passive soil pressure of the soil body, efficient economizing can be completed simultaneously, and meet under different displacement models, the determination demand of the character of soil-baffling structure soil pressure, size, direction and application point, engineering design, construction are had preferable directive function, and for the development of earth pressure theory, and the raising of engineering is the most significant.
Accompanying drawing explanation
Fig. 1 is a kind of barricade built-in Earth Pressure Models experimental rig top view.
Fig. 2 is a kind of barricade built-in Earth Pressure Models experimental rig front view.
Fig. 3 is a kind of barricade built-in Earth Pressure Models experimental rig cross-sectional view.
Fig. 4 is a kind of sliding block modular construction schematic diagram.
Fig. 5 is a kind of top shoe modular construction schematic diagram.
Fig. 6 is that in a kind of result of the test, active earth pressure is distributed with displacement evolution Feature figure.
Fig. 7 be in a kind of result of the test passive earth pressure distribution with displacement evolution Feature figure.
In figure:
null1 casing，11 box sides，12 porous plates，13 water inlet pipes，14 blast pipes，211 top shoes，212 sliding blocks，Elastic steel sheet on 221，222 times elastic steel sheets，Steel pole is connected on 231，Connect steel pole 232 times，31 upper hopper chutes，32 gliding grooves，Jack on 41，42 times jack，Very heavy roof platform seat on 421，422 times jack pedestals，5 rigid retaining walls，6 vertical bearing plates，61 sealant tapes，7 flexible loading water pockets，81 thin-film pressure sensors (MFF series multiple spot diaphragm pressure test system)，82 pore pressure probe (PW series pore pressure gauge)，83 displacement transducers (meet range 100 ~ 150mm，Precision is the various recoil of spring formula displacement meters of 1/100mm)，9 soil bodys.
Detailed description of the invention
Below according to accompanying drawing, the utility model is described in further detail:
According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, a kind of barricade built-in Earth Pressure Models experimental rig, it is made up of casing 1, top shoe 211, sliding block 212, upper hopper chute 31, gliding groove 32, upper jack 41, lower jack 42, rigid retaining walls 5, vertical bearing plate 6, the flexible parts such as water pocket 7, thin-film pressure sensor 81, pore pressure probe 82, displacement transducer 83 that load.
It is characterized in that: casing 1 is a long 3m, the uncovered rectangular-shaped container of steel of wide 1.2m, high 1.5m, casing 1 is welded by the shaped steel such as channel-section steel, I-steel, to ensure sufficiently large rigidity.
Described casing 1 back side panel lower central welds water inlet pipe 13 away from lower at 10 or 12 or 15cm, water inlet pipe 13 is as the soil body 9 moisture input channel in test, casing 1 front side board center upper portion away from along welding blast pipe 14 at 10 or 12 or 15cm, blast pipe 14 is as air discharging channel in the soil body 9 in test.
Described casing 1 inside is close to front side board and back side panel inwall respectively places one block of porous plate 12, porous plate 12 is away from casing 1 front side board and back side panel 1 or 2cm, and it is parallel with casing 1 front side board and back side panel, porous plate 12 width is identical with casing 1 width, the aspect ratio casing 1 the least 8 or 9 or 10cm of porous plate 12, this height loads the full water height of water pocket 7 slightly larger than flexibility, it is ensured that the flexible loading space loading water pocket 7.
Left and right box side 11 specification of described casing 1 is identical, two rectangular apertures are all left on left and right box side 11, the longitudinal axis level of rectangular aperture, upper rectangular aperture central point lays respectively on the vertical axis of box side 11 at 2/3 height, lower rectangular aperture central point lays respectively on the vertical axis of box side 11 at 1/3 height, upper rectangular aperture length 20 or 21 or 22 or 23 or 24 or 25cm, high 8 or 9 or 10cm, lower rectangular aperture length 20 or 21 or 22 or 23 or 24 or 25cm, high 4 or 5 or 6cm.
It is respectively welded upper hopper chute 31 and gliding groove 32 on lateral wall at the upper rectangular aperture of described box side 11 and lower rectangular aperture, the open face of upper hopper chute 31 and gliding groove 32 is towards the corresponding rectangular aperture on box side 11, and the front side wall of upper hopper chute 31 and gliding groove 32 has penetrability cylindrical hole A and penetrability cylindrical hole B；In upper hopper chute 31, top shoe 211 is placed by central authorities, and the piston rod of upper jack 41, through the penetrability cylindrical hole A of upper hopper chute 31 front side wall, is connected with top shoe 211 leading flank center by ball pivot, and upper jack 41 is welded on very heavy roof platform seat 421；In gliding groove 32, sliding block 212 is placed by central authorities, the piston rod of lower jack 42 passes the penetrability cylindrical hole B of gliding groove 32 front side wall, it is connected with the leading flank center of sliding block 212 by ball pivot, lower jack 42 is welded on lower jack pedestal 422, and upper very heavy roof platform seat 421 and lower jack pedestal 422 are respectively welded at outer wall 2/3 height of box side 11 leading section and at 1/3 height.
Described upper hopper chute 31 and gliding groove 32 are uncovered spill cell body, the axis of upper hopper chute 31 and gliding groove 32 keeps level, uncovered towards casing 1, in upper hopper chute 31, sky a size of grows 60 or 70 or 80cm, wide 10 or 11 or 12cm, high 12 or 13 or 14 or 15cm, the center of upper hopper chute 31 open face overlaps in vertical plane with the upper rectangular aperture center of box side 11；In gliding groove 32, sky a size of grows 60 or 70 or 80cm, and wide 10 or 11 or 12cm, high 10 or 11 or 12cm, the center of gliding groove 32 open face overlaps in vertical plane with the lower rectangular aperture center of box side 11.
Described top shoe 211 and sliding block 212 are all steel cuboids, and the width of top shoe 211 or sliding block 212 and height are compared with upper hopper chute 31 or gliding groove 32 inner space width and the corresponding little 1mm of height.
Described top shoe 211 has the vertical notch D of a degree of depth about 5 ~ 6cm towards the side of casing 1 at center car, notch D flat shape is that rectangle combines with upper and lower two semicircles, the width of notch D connects the steel pole 231 big 1mm of external diameter compared with upper, and the height of notch D is 9 or 10cm；Sliding block 212 is drilled with the cylindrical hole C of a degree of depth about 5 or 6cm towards the side of casing 1 in center, and the internal diameter of cylindrical hole C is compared with the lower big 1mm of external diameter connecting steel pole 232.
Described upper very heavy roof platform seat 421 and lower jack pedestal 422 be all long and wide be 15 or 16cm shape steel plate, have four, each welding two on right case side plate 11, upper very heavy roof platform seat 421 is vertical with box side 11 with lower jack pedestal 422 and parallel with casing 1 front side board.
One end of described upper connection steel pole 231 is inserted directly in the vertical notch D of top shoe 211, and the other end of upper connection steel pole 231 is rigidly connected with rigid retaining walls 5；One end of lower connection steel pole 232 is inserted directly in the cylindrical hole C of sliding block 212, and the other end of lower connection steel pole 232 is rigidly connected with rigid retaining walls 5.The bottom of cylindrical hole C has the rectangular-shaped pore of diameter 3cm from center, after pore extends 2 or 3cm along cylindrical hole C bottom, occurs 90 ° to turn to and pass from sliding block 212 trailing flank obliquely.Upper connection steel pole 231 and lower connection steel pole 232 are length 8 or 9 or 10cm, external diameter 40 or 45 or 50mm, the steel hollow cylinder of internal diameter 20mm, and the degree of depth that upper connection steel pole 231 and lower connection steel pole 232 insert top shoe 211 and sliding block 212 is 45 or 50 or 55mm.
Described upper elastic steel sheet 221 and lower elastic steel sheet 222 are respectively welded at top shoe 211 and sliding block 212 towards on the side of casing 1, the upper rectangular aperture of the most corresponding box side 11 of its installation site and lower rectangular aperture.Top shoe 211 is respectively welded elastic steel sheet 221 on two on the both sides of upper connection steel pole 231, and sliding block 212 is respectively welded two lower elastic steel sheets 222 on the both sides of lower connection steel pole 232.Upper elastic steel sheet 221 and lower elastic steel sheet 222 are thickness 1 or 2mm, length 20 or the stalloy of 22 or 25cm, the height little 1 or 2mm of the upper rectangular aperture of upper elastic steel sheet 221 aspect ratio box side 11, the height little 1 or 2mm of the lower rectangular aperture of lower elastic steel sheet 222 aspect ratio box side 11.Elastic steel sheet can cover the rectangular aperture on box side 11 in slide block sliding process, prevents sample from leaking in chute.
Being filled with the soil body 9 in described casing 1, the soil body 9 upper surface level, away from casing 1 top 5 or 6cm；Rigid retaining walls 5 is vertically embedded in the soil body 9, and the soil body 9 upper surface exceedes rigid retaining walls 5 more than 15cm.The soil body 9 upper surface horizontal positioned flexibility loads water pocket 7, the vertical bearing plate of horizontal positioned 6 on flexible loading water pocket 7, vertical bearing plate 6 is bolted to connection on casing 1 top, arranges sealant tape 61 at vertical bearing plate 6 with casing 1 contact site, prevents moisture in the soil body 9 from oozing out.Being pressurizeed by the flexible water pocket 7 that loads in test, simulate the soil body 9 surface vertical load, the flexible water pocket 7 that loads can realize to the flexible loading of the soil body 9, it is ensured that uniform force, reduces test error.
Described respectively lays a cluster film formula pressure sensor 81 at the vertical axis of rigid retaining walls 5 leading flank and trailing flank, two pore pressure probes 82 of each laying on rigid retaining walls 5 leading flank and trailing flank, at upper hopper chute 31 and gliding groove 32 Internal back end, one displacement transducer 83 is respectively installed, displacement transducer 83 horizontal positioned, displacement transducer 83 push rod head directly withstands on the trailing flank center of top shoe 211 or sliding block 212.
Described rigid retaining walls 5 is the combined steel plate that the steel plate of thickness about 10 or 12 or 15cm is made with shaped steel, rigid retaining walls 5 is the internal Thick Hollow shape structure having rigid support, rigid retaining walls 5 width ratio casing 1 width little about 6 or 8 or 10mm, the most about 90 or 95 or 100cm.
Described lower connection steel pole 232 end seal connects a hollow hoses, hose diameter 2cm, flexible pipe passes sliding block 212 by the pore of cylindrical hole C bottom from trailing flank in sliding block 212, by holing in the position of gliding groove 32 rear wall lower middle, flexible pipe is passed gliding groove 32, lay sealing ring between flexible pipe and gliding groove 32, prevent water loss.The data wire that thin-film pressure sensor 81 and pore pressure probe 82 are connected, is entered inside rigid retaining walls 5 by perforate in rigid retaining walls 5, passes casing 1 via lower connection steel pole 232 and flexible pipe, at experiment test devices such as external connection Acquisition Instruments.
Described displacement transducer 83 is holed from the rear wall of upper hopper chute 31 or gliding groove 32 and is passed, and lays sealing ring, prevent from leaking between displacement transducer 83 and upper hopper chute 31 or gliding groove 32.
Claims (6)
1. a barricade built-in Earth Pressure Models experimental rig, it is made up of casing (1), top shoe (211), sliding block (212), upper hopper chute (31), gliding groove (32), upper jack (41), lower jack (42), rigid retaining walls (5), vertical bearing plate (6), flexible loading water pocket (7), thin-film pressure sensor (81), pore pressure probe (82), displacement transducer (83), it is characterized in that: casing (1) is a long 3m, the uncovered rectangular-shaped container of steel of wide 1.2m, high 1.5m；Casing (1) back side panel lower central away from lower along welding water inlet pipe (13) at 10 ~ 15cm, casing (1) front side board center upper portion away from along 10 ~ 15cm place's welding blast pipe (14)；Casing (1) inside is close to front side board and back side panel inwall respectively places one piece of porous plate (12)；Left and right box side (11) specification of casing (1) is identical, two rectangular apertures are all left on left and right box side (11), the longitudinal axis level of rectangular aperture, upper rectangular aperture central point is positioned on the vertical axis of box side (11) at 2/3 height, lower rectangular aperture central point is positioned on the vertical axis of box side (11) at 1/3 height, upper rectangular aperture length 20 ~ 25cm, high 8 ~ 10cm, lower rectangular aperture length 20 ~ 25cm, high 4 ~ 6cm；Upper hopper chute (31) and gliding groove (32) it is respectively welded on lateral wall at the upper rectangular aperture of box side (11) and lower rectangular aperture, the open face of upper hopper chute (31) and gliding groove (32) is towards the corresponding rectangular aperture on the box side (11) of casing (1), and the front side wall of upper hopper chute (31) and gliding groove (32) has penetrability cylindrical hole A and penetrability cylindrical hole B；In upper hopper chute (31), top shoe (211) is placed by central authorities, the piston rod of upper jack (41) passes the penetrability cylindrical hole A of upper hopper chute (31) front side wall, being connected with top shoe (211) leading flank center by ball pivot, upper jack (41) is welded on very heavy roof platform seat (421)；In gliding groove (32), sliding block (212) is placed by central authorities, the piston rod (412) of lower jack (42) passes the penetrability cylindrical hole B of gliding groove (32) front side wall, it is connected by the leading flank center of ball pivot with sliding block (212), lower jack (42) is welded on lower jack pedestal (422), and upper very heavy roof platform seat (421) and lower jack pedestal (422) are respectively welded at outer wall 2/3 height of box side (11) leading section and at 1/3 height；One end of upper connection steel pole (231) is inserted directly in the vertical notch D of top shoe (211), and the other end of upper connection steel pole (231) is rigidly connected with rigid retaining walls (5)；One end of lower connection steel pole (232) is inserted directly in the cylindrical hole C of sliding block (212), and the other end of lower connection steel pole (232) is rigidly connected with rigid retaining walls (5)；Upper elastic steel sheet (221) and lower elastic steel sheet (222) are respectively welded at top shoe (211) and sliding block (212) towards on the side of casing (1), the upper rectangular aperture of the most corresponding box side (11) of its installation site and lower rectangular aperture；Being filled with the soil body (9) in casing (1), the soil body (9) upper surface level, away from casing (1) top 5 ~ 6cm；Rigid retaining walls (5) is vertically embedded in the soil body (9) center of inside；The soil body (9) upper surface horizontal positioned flexibility loads water pocket (7), the upper vertical bearing plate of the horizontal positioned (6) of flexible loading water pocket (7), vertical bearing plate (6) is bolted to connection on casing (1) top, arranges sealant tape (61) at vertical bearing plate (6) and casing (1) top contact position；Cluster film formula pressure sensor (81) is respectively laid at the vertical axis of rigid retaining walls (5) leading flank and trailing flank, two pore pressure probe (82) of each laying on rigid retaining walls (5) leading flank and trailing flank, at upper hopper chute (31) and gliding groove (32) Internal back end, one displacement transducer (83) is respectively installed, displacement transducer (83) horizontal positioned, displacement transducer (83) push rod head directly withstands on top shoe (21) or the trailing flank center of sliding block (22).
A kind of barricade built-in Earth Pressure Models experimental rig the most according to claim 1, it is characterized in that: described upper hopper chute (31) and gliding groove (32) are uncovered spill cell body, upper hopper chute (31) interior sky a size of grows 60 ~ 80cm, wide 10 ~ 12cm, high 12 ~ 15cm, the center of upper hopper chute (31) open face overlaps in vertical plane with the upper rectangular aperture center of box side (11)；Gliding groove (32) interior sky a size of grows 60 ~ 80cm, wide 10 ~ 12cm, high 10 ~ 12cm, and the center of gliding groove (32) open face overlaps in vertical plane with the lower rectangular aperture center of box side (11).
A kind of barricade built-in Earth Pressure Models experimental rig the most according to claim 1, it is characterized in that: described top shoe (211) and sliding block (212) are all steel cuboids, the width of top shoe (211) or sliding block (212) and height upper hopper chute (31) or gliding groove (32) inner space width and the corresponding little 1mm of height；Top shoe (211) has the vertical notch D of a degree of depth 5 ~ 6cm towards the side of casing (1) in center, notch D flat shape is that rectangle combines with upper and lower two semicircles, the width of notch D compared with on connect the big 1mm of steel pole (231) external diameter, the height of notch D is 9 ~ 10cm；Sliding block (212) is drilled with the cylindrical hole C of a degree of depth 5 ~ 6cm towards the side of casing (1) in center, the internal diameter of cylindrical hole C compared with under connect the big 1mm of external diameter of steel pole (232).
A kind of barricade built-in Earth Pressure Models experimental rig the most according to claim 1, it is characterized in that: the combined steel plate that the described steel plate that rigid retaining walls (5) is thickness 10 ~ 15cm is made with shaped steel, rigid retaining walls is the Thick Hollow shape structure that there is rigid support inside, rigid retaining walls width ratio casing (1) width little 6 ~ 10mm, highly 90 ~ 100cm.
A kind of barricade built-in Earth Pressure Models experimental rig the most according to claim 1, it is characterized in that: described upper connection steel pole (231) and lower connection steel pole (232) are length 8 ~ 10cm, external diameter 40 ~ 50mm, the steel hollow cylinder of internal diameter 20mm, upper connection steel pole (231) and lower connection steel pole (232) insert the degree of depth of top shoe (211) and sliding block (212) and are 45 ~ 55mm.
A kind of barricade built-in Earth Pressure Models experimental rig the most according to claim 1, it is characterized in that: described upper elastic steel sheet (221) and lower elastic steel sheet (222) are thickness 1 ~ 2mm, the stalloy of length 20 ~ 25cm, little 1 ~ the 2mm of height of the upper rectangular aperture of upper elastic steel sheet (221) aspect ratio box side (11), the little 1 ~ 2mm of height of the lower rectangular aperture of lower elastic steel sheet (222) aspect ratio box side (11).
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| CN201620379706.8U CN205562300U (en) | 2016-04-28 | 2016-04-28 | Built -in soil pressure model test device of barricade |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928794A (en) * | 2016-04-28 | 2016-09-07 | 中国科学院武汉岩土力学研究所 | Built-in soil pressure test system |
| CN106500768A (en) * | 2016-10-26 | 2017-03-15 | 成都理工大学 | Tunnel granular soil country rock and granary effect test platform |
| CN107062062A (en) * | 2016-12-27 | 2017-08-18 | 武汉华星光电技术有限公司 | A kind of stop member and the backlight module comprising it |
| CN107389456A (en) * | 2017-06-13 | 2017-11-24 | 上海交通大学 | A kind of model test apparatus and method of testing for testing soil pressure |
| CN113029775A (en) * | 2021-02-03 | 2021-06-25 | 深圳市天健(集团)股份有限公司 | Column structure active and passive soil pressure combined model experimental device and experimental method thereof |
-
2016
- 2016-04-28 CN CN201620379706.8U patent/CN205562300U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928794A (en) * | 2016-04-28 | 2016-09-07 | 中国科学院武汉岩土力学研究所 | Built-in soil pressure test system |
| CN105928794B (en) * | 2016-04-28 | 2018-08-07 | 中国科学院武汉岩土力学研究所 | Built-in soil pressure calculation system |
| CN106500768A (en) * | 2016-10-26 | 2017-03-15 | 成都理工大学 | Tunnel granular soil country rock and granary effect test platform |
| CN106500768B (en) * | 2016-10-26 | 2019-01-22 | 成都理工大学 | Tunnel granular soil country rock and granary effect test platform |
| CN107062062A (en) * | 2016-12-27 | 2017-08-18 | 武汉华星光电技术有限公司 | A kind of stop member and the backlight module comprising it |
| CN107389456A (en) * | 2017-06-13 | 2017-11-24 | 上海交通大学 | A kind of model test apparatus and method of testing for testing soil pressure |
| CN113029775A (en) * | 2021-02-03 | 2021-06-25 | 深圳市天健(集团)股份有限公司 | Column structure active and passive soil pressure combined model experimental device and experimental method thereof |
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