CN105954099B - Built-in retaining wall type soil pressure seep effect test method - Google Patents
Built-in retaining wall type soil pressure seep effect test method Download PDFInfo
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- CN105954099B CN105954099B CN201610277962.0A CN201610277962A CN105954099B CN 105954099 B CN105954099 B CN 105954099B CN 201610277962 A CN201610277962 A CN 201610277962A CN 105954099 B CN105954099 B CN 105954099B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Abstract
The invention discloses a kind of built-in retaining wall type soil pressure seep effect test method, step is：A, it completes the orientation adjustment of rigid retaining walls in babinet and the soil body fills；B, the water filling into babinet from water inlet pipe by water pump；C, moisture is infiltrated by the porous plate of water inlet pipe into the soil body in babinet；D, water inlet pipe and exhaust pipe are blocked, is stood；E, the movement of rigid retaining walls is controlled by upper and lower jack；F, it is popped one's head in by pore pressure and obtains pore water pressure, obtain active earth pressure and passive earth pressure result under the conditions of seepage effect.Experimental rig is made of babinet, upper sliding block, upper gliding groove, upper and lower jack, rigid retaining walls, vertical bearing plate, flexible load water pocket, thin-film pressure sensor, pore pressure probe, displacement sensor.Easy to operate, efficient economizing meets the active and passive soil pressure calculation needs for considering soil body penetration effect.
Description
Technical field
The present invention relates to architectural and civil engineering experimental test technical field more particularly to a kind of built-in retaining wall type soil pressures
Seep effect test method also relates to a kind of device of built-in retaining wall type soil pressure seep effect experiment, it is suitable for examining
Consider seep effect, while simulating the active and passive soil pressure calculation under rigid retaining walls difference displacement model.
Background technology
Earth pressures are commonly encountered in base pit engineering, it is correct to determine that soil pressure is to carry out the rational design and smoothly of engineering
The premise of construction is also to ensure that the basis of engineering project safety and economy.
In order to carry out soil pressure correlation theory research, a kind of test method of perfect in shape and function is needed to carry out the reality of soil pressure
Test room physical analogy.The calculating of soil pressure is related to that factor is numerous, and many scholars have carried out deeply water-soil calculation of pressure problem
Anatomy, mainly formula is corrected in terms of the intensity index value of soil and seepage flow it is perfect, but due to not examining fully
The physical property for considering soil, disagreement between estimating water and earth pressure separately and together is still without preferably solving.Therefore, it will act on and be contacted most with water
It is that close permeability is considered in Analysis of Earth Pressure, proposes to consider that infiltrative soil pressure calculation method is very significant
's.
To solve the above problems, a kind of built-in retaining wall type soil pressure seep effect test method of research, it is contemplated that the soil body oozes
Penetration effect and overlying burden, the active and passive soil pressure calculation being completed at the same time under rigid retaining walls difference displacement model, in engineering
On, the development of design and earth pressure theory for soil-baffling structure and the raising of engineering technology level are all of great significance.
Invention content
The purpose of the present invention is for the structures that subject soil body lateral pressure in civil engineering（Such as friction pile, retaining wall
Deng）, it is to be the provision of a kind of built-in retaining wall type soil pressure seep effect test method, step sequence is reasonable, easy to operate, efficiently saves
About, it has excellent performance, under the conditions of meeting different seepage flow, soil pressure distribution regular grinds when different displacement models occur for rigid retaining walls
Study carefully needs.
Another object of the present invention is to be the provision of a kind of device of built-in retaining wall type soil pressure seep effect experiment,
Reasonable for structure, easy to operate, efficient economizing is had excellent performance, and realizes the rigid retaining walls geostatic shield for considering soil body permeability
Research need, be of great significance for the raising of civil engineering technical merit.
To solve the above problems, the present invention realizes above-mentioned purpose using following technical measures：
A kind of built-in retaining wall type soil pressure seep effect test method, includes the following steps：
One, it completes the orientation adjustment of rigid retaining walls in babinet and the soil body fills, flexible load water pocket is placed, in babinet
The upper vertical bearing plate of fixation connects a circle sealant tape between vertical bearing plate and babinet, prevents moisture stream during experiment
It becomes estranged hydraulic pressure error, it is unloaded to flexibility load water pocket or water filling is forced into 200 ~ 400kPa according to experiment demand；
Two, water pump is connected on the water inlet pipe on babinet, by water pump water filling into babinet from water inlet pipe, and be always maintained at
Water pressure needed for test, the water pressure are 1 ~ 15kPa；
Three, moisture is infiltrated by the porous plate close to water inlet pipe into the soil body in babinet, and moisture passes through close to exhaust pipe
Porous plate exudation, gas is discharged during Infiltration from exhaust pipe in the soil body；
Four, after water filling, water inlet pipe and exhaust pipe are blocked, for no-Co-alloy steel, static 8 ~ for 24 hours, for stickiness
Soil stands 2 ~ 7 days so that moisture fully infiltrates；
Five, the movement of rigid retaining walls, and the reading control for passing through displacement sensor are controlled by upper jack and lower jack
The magnitude of rigid retaining walls translation or rotation processed；
Six, soil body pore water pressure during being tested by the pore pressure of rigid retaining walls both sides probe, passes through film
Formula pressure sensor tests to obtain rigid retaining walls front and rear sides soil pressure, comprehensive analysis seepage flow to rigid retaining walls active earth pressure and
The influence of passive earth pressure, active earth pressure and passive earth pressure are as a result, design active earth pressure under the conditions of obtaining seepage effect
As a result see that attached drawing 6, design passive earth pressure result are shown in attached drawing 7.
A kind of device of described built-in retaining wall type soil pressure seep effect experiment, it by babinet, top shoe, sliding block,
Upper hopper chute, gliding groove, upper jack, lower jack, rigid retaining walls, vertical bearing plate, flexible load water pocket, diaphragm pressure pass
The components such as sensor, pore pressure probe, displacement sensor are constituted.The babinet is a long 3m, and the steel of wide 1.2m, high 1.5m are spacious
Mouth rectangular-shape container, babinet is welded by shaped steel such as channel steel, I-steel, to ensure sufficiently large rigidity.The babinet
Back side panel lower central welds water inlet pipe along 10 ~ 15cm away from lower, and water inlet pipe is as soil body moisture input channel in experiment, babinet
Front side board center upper portion is away from exhaust pipe is welded at 10 ~ 15cm of upper edge, exhaust pipe is as air discharging channel in the soil body in experiment.Institute
The box house stated is close to front side board and back side panel inner wall respectively places one block of porous plate, and 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, and porous plate width is identical as box width, and the height of porous plate compares babinet
Highly small 8 ~ 10cm, this is highly slightly larger than the full water height of flexible load water pocket, ensures the load space of flexible load water pocket.Institute
The left and right box side plate gauge lattice for the babinet stated are identical, there are two rectangular apertures on left and right box side, rectangular aperture
Longitudinal axis is horizontal, and upper rectangular aperture central point is located on the vertical central axes of box side at 2/3 height, lower rectangular aperture central point
Positioned at 1/3 height, upper rectangular aperture grows 20 ~ 25cm, high 8 ~ 10cm, lower rectangular aperture length 20 on the vertical central axes of box side
~ 25cm, high 4 ~ 6cm.Cunning is respectively welded on lateral wall at the upper rectangular aperture of the box side and lower rectangular aperture
The open face of slot and gliding groove, upper hopper chute and gliding groove is towards the corresponding rectangular aperture on box side, upper hopper chute and downslide
The front side wall of slot has penetrability cylindrical hole A and penetrability cylindrical hole B；Top shoe is placed in center in upper hopper chute, upper very heavy
The piston rod on top passes through the penetrability cylindrical hole A of upper hopper chute front side wall, is connect with top shoe leading flank center by flexural pivot, thousands of
Jin top solder is on upper very heavy roof platform seat；Sliding block is placed in center in gliding groove, and the piston rod of lower jack is before gliding groove
The penetrability cylindrical hole B of side wall, is connected by the leading flank center of flexural pivot and sliding block, and lower jack is welded on down very heavy roof platform
On seat, upper very heavy roof platform seat and lower jack pedestal are respectively welded at box side front end outer wall 2/3 and highly locate and 1/3 height
Place；The upper hopper chute and gliding groove is open spill groove body, and the axis of upper hopper chute and gliding groove keeps horizontal, it is open towards
Babinet, empty size is long 60 ~ 80cm, wide 10 ~ 12cm, high 12 ~ 15cm, the center of upper hopper chute open face and case-side in upper hopper chute
The upper rectangular aperture center of plate overlaps in vertical plane；Empty size is long 60 ~ 80cm, wide 10 ~ 12cm in gliding groove, high by 10 ~
12cm, the center of gliding groove open face are overlapped with the lower rectangular aperture center of box side in vertical plane.The top shoe
It is steel cuboid with sliding block, the width and height of top shoe or sliding block are compared with upper hopper chute or gliding groove inner space width and height
The corresponding small 1mm of degree.Towards the side of babinet, the vehicle at center has the vertical notch D of a depth about 5 ~ 6cm, slot to the top shoe
Mouth D flat shapes are that rectangle is composed with upper and lower two semicircles, and the width of notch D connects the big 1mm of steel pole outer diameter, notch compared with upper
The height of D is 9 ~ 10cm；Sliding block is drilled with the cylindrical hole C of a depth about 5 ~ 6cm, cylindrical hole towards the side of babinet at center
Outer diameter big 1mm of the internal diameter of C compared with lower connection steel pole.The jack pedestal be it is long and it is wide be 15 ~ 16cm shape steel plate, altogether
There are four, two are respectively welded on right case side plate, jack pedestal is vertical with box side and parallel with cabinet front plate.Institute
The one end for the upper connection steel pole stated is inserted directly into the vertical notch D of top shoe, the other end and rigid retaining walls of upper connection steel pole
Rigid connection；One end of lower connection steel pole is inserted directly into the cylindrical hole C of sliding block, and the other end of lower connection steel pole is kept off with rigidity
Wall is rigidly connected.The bottom end of cylindrical hole C is provided with the rectangular-shaped pore of diameter 3cm from center, and pore extends along the bottom ends cylindrical hole C
After 2 ~ 3cm, occurs 90 ° and turn to and be pierced by obliquely from sliding block trailing flank.Upper connection steel pole and lower connection steel pole be length 8 ~
The steel hollow cylinder of 10cm, 40 ~ 50mm of outer diameter, internal diameter 20mm, upper connection steel pole and lower connection steel pole are inserted into top shoe under
The depth of sliding block is 45 ~ 55mm.The upper elastic steel sheet and lower elastic steel sheet are respectively welded at top shoe and sliding block court
To on the side of babinet, installation site corresponds to the upper rectangular aperture of box side and lower rectangular aperture respectively.Top shoe is upper
Two on piece elastic steel sheets are respectively welded in the both sides of connection steel pole, and two under piece bullets are respectively welded on the both sides of lower connection steel pole in sliding block
Property steel disc.Upper elastic steel sheet and lower elastic steel sheet are the stalloy of 1 ~ 2mm of thickness, 20 ~ 25cm of length, upper elastic steel sheet height
Height than the upper rectangular aperture of box side is small 1 ~ 2mm, and lower elastic steel sheet height is higher than the lower rectangular aperture of box side
Spend small 1 ~ 2mm.Elastic steel sheet can cover the rectangular aperture on box side in sliding block sliding process, prevent sample from leaking into cunning
In slot.The soil body is filled in the babinet, soil body upper surface is horizontal, away from 5 ~ 6cm of babinet top；Rigid retaining walls are embedded in soil vertically
In body, soil body upper surface is more than rigid retaining walls 15cm or more.The horizontal positioned flexible load water pocket in soil body upper surface, flexibility load water
Vertical bearing plate is horizontally arranged on capsule, vertical bearing plate is bolted to connection on top of the box, vertical bearing plate with
Sealant tape is arranged in babinet contact site, prevents moisture in the soil body from oozing out.Water pocket pressurization is loaded by flexibility in experiment, to simulate
Soil body surface vertical load, flexibility load water pocket may be implemented to load to soil body flexibility, ensure uniform force, reduce test and miss
Difference.Described respectively lays a cluster film formula pressure sensor at the vertical axis of rigid retaining walls leading flank and trailing flank, rigid
Property barricade leading flank and trailing flank on respectively lay two pore pressures probe, in each one position of installation of upper hopper chute and gliding groove Internal back end
Displacement sensor, displacement sensor is horizontal positioned, and displacement sensor push rod head is directly withstood in the trailing flank of top shoe or sliding block
The heart.Shape steel plate is combined made of the steel plate and shaped steel that the rigid retaining walls are thickness about 10 ~ 15cm, rigid retaining walls have for inside
The Thick Hollow shape structure of rigid support, rigid retaining walls width about 6 ~ 10mm smaller than box width, height about 90 ~ 100cm.It is described
Lower connection steel pole end seal connect a hollow hoses, hose diameter 2cm, hose passes through the bottoms cylindrical hole C in sliding block
The pore at end is pierced by sliding block from trailing flank, and hose is pierced by downslide by drilling in the position of gliding groove rear wall lower middle
Slot lays sealing ring between hose and gliding groove, prevent water loss.Thin-film pressure sensor and pore pressure are popped one's head in connected number
According to line, by rigid retaining walls trepanning enter inside rigid retaining walls, babinet is pierced by via lower connection steel pole and hose, in outside
Connect the experiment test devices such as Acquisition Instrument.The displacement sensor is pierced by from the drilling of the rear wall of upper hopper chute or gliding groove, displacement
Sealing ring is laid between sensor and upper hopper chute or gliding groove, prevents leak.
Compared with prior art, the present invention haing the following advantages and effect：
1) it is provided with water inlet pipe, exhaust pipe and porous plate, realizes and applies water pressure into the soil body, will act on and contact with water
Permeability the closest is considered in Analysis of Earth Pressure, and the simulation of soil pressure under the conditions of different seepage flow can be completed, and realizes water
With the coupling of soil；
2）Test method can realize a variety of different displacement models such as barricade translation and various rotations, and accurately control flat
Dynamic displacement and rotation displacement, angle, to test the distribution situation of soil pressure under various operating modes；
3) the vertical pressue device of vertical bearing plate and flexible load water pocket composition, may be implemented and preferably simulate ground
Soil pressure under load action.
4）By barricade built in the soil body, soil body active earth pressure and passive earth pressure can be completed at the same time by once testing
Test, is greatly saved manpower and materials cost and testing efficiency；
The built-in retaining wall type soil pressure seep effect test method simulates barricade soil by being placed in the barricade of box house
Pres planes strain problems, can test under the different displacement models for considering seep effect, the soil body under different loading condition actively,
Passive earth pressure, perfect in shape and function, strong operability, efficient economizing, and meet under different displacement models, soil-baffling structure soil pressure
Property, size, the determination demand in direction and position, to engineering design, construction have preferable directive function, for soil pressure
The raising of theoretical development and engineering technology is all of great significance.
Description of the drawings
Fig. 1 is a kind of device vertical view of built-in retaining wall type soil pressure seep effect experiment.
Fig. 2 is a kind of device front view of built-in retaining wall type soil pressure seep effect experiment.
Fig. 3 is a kind of device cross-sectional view of built-in retaining wall type soil pressure seep effect experiment.
Fig. 4 is a kind of sliding block component structure diagram.
Fig. 5 is a kind of top shoe component structure diagram.
Fig. 6 is a kind of built-in retaining wall type soil pressure seep effect experiment active earth pressure result.
Fig. 7 is a kind of built-in retaining wall type soil pressure seep effect experiment passive earth pressure result.
In figure：
1-babinet, 11-box sides, 12-porous plates, 13-water inlet pipes, 14-exhaust pipes, 211-top shoes,
212-sliding blocks, 221-upper elastic steel sheets, 222-lower elastic steel sheets, 231-above connect steel pole, connect steel poles 232-time,
31-upper hopper chutes, 32-gliding grooves, 41-upper jack, 42-lower jack, 421-upper very heavy roof platform seats, 422-times thousand
Jin roof platform seat, 5-rigid retaining walls, 6-vertical bearing plates, 61-sealant tapes, 7-flexible load water pockets, 81-diaphragm type pressures
Force snesor（MFF series multiple spot diaphragm pressures test system）, 82-pore pressures probe（PW series pore pressure gauges）, 83-positions
Displacement sensor（Meet 100 ~ 150mm of range, precision is the various recoil of spring formula displacement meters of 1/100mm）, the 9-soil bodys.
Specific implementation mode
Below according to attached drawing, present invention is further described in detail：
According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 it is found that a kind of built-in retaining wall type soil pressure seep effect experiment
Method includes the following steps：
One, it completes the orientation adjustment of rigid retaining walls 5 in babinet 1 and the soil body 9 fills, place flexible load water pocket 7,
Vertical bearing plate 6 is fixed on babinet 1, and a circle sealant tape 61 is connected between vertical bearing plate 6 and babinet 1, prevents from testing
Water loss and hydraulic pressure error in journey, according to experiment demand is unloaded to flexibility load water pocket 7 or water filling be forced into 200 or 250 or
300 or 350 or 400kPa；
Two, water pump is connected on the water inlet pipe 13 on babinet 1, by water pump from the water filling into babinet 1 of water inlet pipe 13, and one
The straight water pressure kept needed for test, the water pressure are 1 or 3 or 6 or 9 or 12 or 15kPa；
Three, by being infiltrated into the soil body 9 close to the porous plate 12 of water inlet pipe 13 in babinet 1, moisture passes through close moisture
The porous plate 12 of exhaust pipe 14 oozes out, and gas is discharged during Infiltration from exhaust pipe 14 in the soil body 9；
Four, after water filling, water inlet pipe 13 and exhaust pipe 14 are blocked, for no-Co-alloy steel, static 8 or 16 or for 24 hours,
For cohesive soil, 2 or 3 or 4 or 5 or 6 or 7 days are stood so that moisture fully infiltrates；
Five, the movement of rigid retaining walls 5 is controlled by upper jack 41 and lower jack 42, and passes through displacement sensor 83
The magnitude of reading control rigid retaining walls 5 translation or rotation；
Six, 9 pore water pressure of the soil body during being tested by the pore pressure of 5 both sides of rigid retaining walls probe 82, passes through
The test of thin-film pressure sensor 81 obtains 5 front and rear sides soil pressure of rigid retaining walls, and comprehensive analysis seepage flow is to 5 active of rigid retaining walls
The influence of soil pressure and passive earth pressure obtains active earth pressure and passive earth pressure result under the conditions of seepage effect.
A kind of device of built-in retaining wall type soil pressure seep effect experiment, it is by babinet 1, top shoe 211, downslide
Block 212, upper hopper chute 31, gliding groove 32, upper jack 41, lower jack 42, rigid retaining walls 5, vertical bearing plate 6, flexible load
The components such as water pocket 7, thin-film pressure sensor 81, pore pressure probe 82, displacement sensor 83 are constituted.The babinet 1 is one
The steel opening rectangular-shape container of long 3m, wide 1.2m, high 1.5m, babinet 1 are welded by shaped steel such as channel steel, I-steel, with
Ensure sufficiently large rigidity.The 1 back side panel lower central of babinet welds water inlet pipe 13 along 10 or 12 or 15cm away from lower, into
Water pipe 13 is as 9 moisture input channel of the soil body in experiment, and 1 front side board center upper portion of babinet is away from welding at upper edge 10 or 12 or 15cm
Exhaust pipe 14, exhaust pipe 14 is as air discharging channel in the soil body 9 in experiment.It is close to front side board inside the babinet 1 with after
Side plate inner wall respectively places one block of porous plate 12, porous plate 12 away from 1 front side board of babinet and back side panel 1 or 2cm, and with the front side of babinet 1
Plate is parallel with back side panel, and 12 width of porous plate and babinet 1 are of same size, the height of porous plate 12 it is smaller by 8 than 1 height of babinet or 9 or
10cm, this is highly slightly larger than the full water height of flexible load water pocket 7, ensures the load space of flexible load water pocket 7.The case
11 specification of left and right box side of body 1 is identical, and there are two rectangular apertures on left and right box side 11, rectangular aperture is indulged
Axis horizontal, upper rectangular aperture central point are located on 11 vertical central axes of box side at 2/3 height, in lower rectangular aperture
Heart point is located on 11 vertical central axes of box side 1/3 height and locates, upper rectangular aperture grow 20 or 21 or 22 or 23 or 24 or
25cm, high 8 or 9 or 10cm, lower rectangular aperture grow 20 or 21 or 22 or 23 or 24 or 25cm, high 4 or 5 or 6cm.The babinet
Upper hopper chute 31 and gliding groove 32, upper hopper chute 31 is respectively welded on lateral wall at the upper rectangular aperture of side plate 11 and lower rectangular aperture
With the open face of gliding groove 32 towards the corresponding rectangular aperture on box side 11, the front side wall of upper hopper chute 31 and gliding groove 32
Have penetrability cylindrical hole A and penetrability cylindrical hole B；Top shoe 211 is placed in center in upper hopper chute 31, upper jack 41
Piston rod passes through the penetrability cylindrical hole A of 31 front side wall of upper hopper chute, is connect with 211 leading flank center of top shoe by flexural pivot, on
Jack 41 is welded on very heavy roof platform seat 421；Sliding block 212, the piston of lower jack 42 are placed in center in gliding groove 32
Bar passes through the penetrability cylindrical hole B of 32 front side wall of gliding groove, is connect with the leading flank center of sliding block 212 by flexural pivot, and lower thousand
Jin top 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 babinet
11 front end outer wall 2/3 of side plate highly locate and 1/3 height at；The upper hopper chute 31 and gliding groove 32 is open baltimore groove
The axis of body, upper hopper chute 31 and gliding groove 32 keeps horizontal, open towards babinet 1, and empty size is long 60 or 70 in upper hopper chute 31
Or 80cm, wide 10 or 11 or 12cm, high 12 or 13 or 14 or 15cm, the center of 31 open face of upper hopper chute are upper with box side 11
Rectangular aperture center overlaps in vertical plane；Empty size is long 60 or 70 or 80cm, wide 10 or 11 or 12cm in gliding groove 32, high
10 or 11 or 12cm, the center of 32 open face of gliding groove are overlapped with the lower rectangular aperture center of box side 11 in vertical plane.
The top shoe 211 and sliding block 212 is steel cuboid, the width and height of top shoe 211 or sliding block 212 relatively on
The corresponding small 1mm of sliding slot 31 or 32 inner space width of gliding groove and height.The top shoe 211 is towards the side of babinet 1 at center
It is that rectangle is composed with upper and lower two semicircles that place's vehicle, which has the vertical notch D of a depth about 5 ~ 6cm, notch D flat shapes, notch
The width of D is 9 or 10cm compared with the height of upper connection 231 outer diameter of steel pole big 1mm, notch D；Sliding block 212 is towards the side of babinet 1
The internal diameter of a depth about 5 or the cylindrical hole C of 6cm, cylindrical hole C are drilled at center compared with the lower big 1mm of outer diameter for connecting steel pole 232.
The upper very heavy roof platform seat 421 and lower jack pedestal 422 be it is long and it is wide be 15 or 16cm shape steel plate, share four
It is a, two are respectively welded on right case side plate 11, upper very heavy roof platform seat 421 and lower jack pedestal 422 hang down with box side 11
Direct join is parallel with 1 front side board of babinet.One end of the upper connection steel pole 231 is inserted directly into the vertical notch D of top shoe 211
In, 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 into sliding block
In 212 cylindrical hole C, the other end of lower connection steel pole 232 is rigidly connected with rigid retaining walls 5.The bottom end of cylindrical hole C is from center
It is provided with the rectangular-shaped pore of diameter 3cm, after pore extends 2 or 3cm along the bottom ends cylindrical hole C, occurs 90 ° and turn to and obliquely under
212 trailing flank of sliding block is pierced by.Upper connection steel pole 231 and lower connection steel pole 232 are length 8 or 9 or 10cm, outer diameter 40 or 45 or
The steel hollow cylinder of 50mm, internal diameter 20mm, upper connection steel pole 231 and lower connection steel pole 232 are inserted into top shoe 211 and sliding block
212 depth is 45 or 50 or 55mm.The upper elastic steel sheet 221 and lower elastic steel sheet 222 is respectively welded at top shoe
211 and sliding block 212 towards on the side of babinet 1, installation site correspond to respectively box side 11 upper rectangular aperture and under
Rectangular aperture.Two on piece elastic steel sheets 221 are respectively welded on the both sides of upper connection steel pole 231 in top shoe 211, and sliding block 212 exists
Two under piece elastic steel sheets 222 are respectively welded in the both sides of lower connection steel pole 232.Upper elastic steel sheet 221 and lower elastic steel sheet 222 are
The stalloy of thickness 1 or 2mm, length 20 or 22 or 25cm, upper rectangular aperture of 221 height of upper elastic steel sheet than box side 11
Height small 1 or 2mm, lower 222 height of elastic steel sheet is smaller by 1 than the height of the lower rectangular aperture of box side 11 or 2mm.Elastic Steel
Piece can cover the rectangular aperture on box side 11 in sliding block sliding process, prevent sample from leaking into sliding slot.The case
The soil body 9 is filled in body 1,9 upper surface of the soil body is horizontal, away from 1 top 5 of babinet or 6cm；Rigid retaining walls 5 are embedded in vertically in the soil body 9,
9 upper surface of the soil body is more than 5 15cm or more of rigid retaining walls.The horizontal positioned flexible load water pocket 7 in 9 upper surface of the soil body, flexibility load water
Vertical bearing plate 6 is horizontally arranged on capsule 7, vertical bearing plate 6 is bolted to connection on 1 top of babinet, in vertical pressure-bearing
Sealant tape 61 is arranged with 1 contact site of babinet in plate 6, prevents moisture in the soil body 9 from oozing out.Water pocket 7 is loaded by flexibility in experiment
Pressurization, to simulate 9 surface vertical load of the soil body, flexibility load water pocket 7 may be implemented, to the flexible load of the soil body 9, to ensure that stress is equal
It is even, reduce test error.Described respectively lays a cluster film formula pressure at the vertical axis of 5 leading flank of rigid retaining walls and trailing flank
Force snesor 81 respectively lays two pore pressure probes 82, in upper hopper chute 31 and gliding groove on 5 leading flank of rigid retaining walls and trailing flank
Respectively one displacement sensor 83 of installation, displacement sensor 83 are horizontally arranged 32 Internal back ends, and 83 push rod head of displacement sensor is direct
Withstand on the trailing flank center of top shoe 211 or sliding block 212.The rigid retaining walls 5 are thickness about 10 or 12 or the steel of 15cm
Shape steel plate is combined made of plate and shaped steel, rigid retaining walls 5 are the Thick Hollow shape structure that there is rigid support in inside, rigid retaining walls 5
Width smaller than 1 width of babinet about 6 or 8 or 10mm, about 90 or 95 or 100cm of height.Lower 232 end seal of connection steel pole
A hollow hoses, hose diameter 2cm are connected, hose is worn by the pore of the bottom ends cylindrical hole C from trailing flank in sliding block 212
Go out sliding block 212, hose is pierced by by gliding groove 32 by the position drilling in 32 rear wall lower middle of gliding groove, hose is under
Sealing ring is laid between sliding slot 32, prevents water loss.The data line that thin-film pressure sensor 81 and pore pressure probe 82 are connected,
By in rigid retaining walls 5 trepanning enter inside rigid retaining walls 5, be pierced by babinet 1 via lower connection steel pole 232 and hose, outside
Portion connects the experiment test devices such as Acquisition Instrument.The displacement sensor 83 is worn from the drilling of the rear wall of upper hopper chute 31 or gliding groove 32
Go out, lays sealing ring between displacement sensor 83 and upper hopper chute 31 or gliding groove 32, prevent leak.
Claims (1)
1. a kind of built-in retaining wall type soil pressure seep effect test method, step are：
A, in babinet（1）Interior completion rigid retaining walls（5）Orientation adjustment and the soil body（9）It fills, places flexible load water pocket（7）,
In babinet（1）The upper vertical bearing plate of fixation（6）, in vertical bearing plate（6）And babinet（1）Between connection one circle sealant tape
（61）, water pocket is loaded to flexibility according to experiment（7）Unloaded or water filling is forced into 200 ~ 400kPa；
B, in babinet（1）On water inlet pipe（13）Upper connection water pump, by water pump by water inlet pipe（13）To babinet（1）Interior water filling,
And the water pressure for being always maintained at test is 1 ~ 15kPa；
C, moisture is in babinet（1）Inside pass through water inlet pipe（13）Porous plate（12）To the soil body（9）It inside infiltrates, moisture passes through exhaust pipe
（14）Porous plate（12）Exudation, the soil body（9）Middle gas is during Infiltration from exhaust pipe（14）Discharge；
D, after water filling, water inlet pipe is blocked（13）And exhaust pipe（14）, for no-Co-alloy steel, static 8 ~ for 24 hours, for glutinous
Property soil, stand 2 ~ 7 days so that moisture fully infiltrates；
E, pass through upper jack（41）With lower jack（42）Control rigid retaining walls（5）Movement, and pass through displacement sensor
（83）Reading control rigid retaining walls（5）The magnitude of translation or rotation；
F, pass through rigid retaining walls（5）The pore pressure of both sides is popped one's head in（82）The soil body during being tested（9）Pore water pressure passes through
Thin-film pressure sensor（81）Test obtains rigid retaining walls（5）Front and rear sides soil pressure, comprehensive analysis seepage flow is to rigid retaining walls
（5）The influence of active earth pressure and passive earth pressure obtains active earth pressure and passive earth pressure result under the conditions of seepage effect；
Device used in the test method, it includes babinet（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 load water pocket
（7）, thin-film pressure sensor（81）, pore pressure probe（82）, displacement sensor（83）,
The babinet（1）For a long 3m, the steel opening rectangular-shape container of wide 1.2m, high 1.5m；Babinet（1）Back side panel
Lower central welds water inlet pipe along 10 ~ 15cm away from lower（13）, babinet（1）Front side board center upper portion is away from weldering at 10 ~ 15cm of upper edge
Run in tracheae（14）；Babinet（1）Front side board is close in inside and back side panel inner wall respectively places one block of porous plate（12）；Babinet（1）'s
Left and right box side（11）Specification is identical, left and right box side（11）On there are two rectangular apertures, rectangular aperture it is vertical
Axis horizontal, upper rectangular aperture central point are located at box side（11）On vertical central axes at 2/3 height, lower rectangular aperture center
Point is located at box side（11）On vertical central axes at 1/3 height, upper rectangular aperture grows 20 ~ 25cm, high 8 ~ 10cm, and lower rectangle is opened
Mouth long 20 ~ 25cm, high 4 ~ 6cm；Box side（11）Upper rectangular aperture and lower rectangular aperture at lateral wall on be respectively welded
Upper hopper chute（31）And gliding groove（32）, upper hopper chute（31）And gliding groove（32）Open face towards babinet（1）Box side
（11）On corresponding rectangular aperture, upper hopper chute（31）And gliding groove（32）Front side wall have penetrability cylindrical hole A and
Penetrability cylindrical hole B；Upper hopper chute（31）Place top shoe in interior center（211）, upper jack（41）Piston rod pass through upper hopper chute
（31）The penetrability cylindrical hole A of front side wall, passes through flexural pivot and top shoe（211）Leading flank center connects, upper jack（41）Weldering
It is connected on very heavy roof platform seat（421）On；
The gliding groove（32）Place sliding block in interior center（212）, lower jack（42）Piston rod（412）Across gliding groove
（32）The penetrability cylindrical hole B of front side wall, passes through flexural pivot and sliding block（212）Leading flank center connection, lower jack（42）
It is welded on lower jack pedestal（422）On, upper very heavy roof platform seat（421）With lower jack pedestal（422）It is respectively welded at babinet
Side plate（11）Front end outer wall 2/3 highly locate and 1/3 height at；
Upper connection steel pole（231）One end be inserted directly into top shoe（211）Vertical notch D in, upper connection steel pole（231）It is another
One end and rigid retaining walls（5）Rigid connection；Lower connection steel pole（232）One end be inserted directly into sliding block（212）Cylindrical hole C
It is interior, lower connection steel pole（232）The other end and rigid retaining walls（5）Rigid connection；
Upper elastic steel sheet（221）With lower elastic steel sheet（222）It is respectively welded at top shoe（211）And sliding block（212）Towards case
Body（1）Side on, installation site corresponds to box side respectively（11）Upper rectangular aperture and lower rectangular aperture；
The babinet（1）Inside it is filled with the soil body（9）, the soil body（9）Upper surface is horizontal, away from babinet（1）5 ~ 6cm of top；Rigid retaining walls
（5）It is embedded in the soil body vertically（9）Center of inside；The soil body（9）The horizontal positioned flexible load water pocket in upper surface（7）, flexibility load water
Capsule（7）It is upper to be horizontally arranged vertical bearing plate（6）, vertical bearing plate（6）It is bolted to connection in babinet（1）On top,
Vertical bearing plate（6）With babinet（1）Sealant tape is arranged in top contact position（61）.
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| CN107436280A (en) * | 2017-09-26 | 2017-12-05 | 中国科学院武汉岩土力学研究所 | Curtain withdrawal device and curtain withdrawal system |
| CN111018086B (en) * | 2019-12-24 | 2022-05-13 | 北京建工环境修复股份有限公司 | Permeable reaction wall structure and method for treating pollution plume by permeable reaction wall structure |
| CN111998890B (en) * | 2020-07-17 | 2023-01-24 | 中交第二航务工程局有限公司 | Grouting and leaking stoppage model test system based on water seepage condition |
| CN113358531B (en) * | 2021-06-28 | 2024-03-12 | 重庆大学 | Transparent soil model test device and method for simulating influence of underground retaining wall structure on groundwater seepage |
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