CN107121229B - Earth pressure test instrument and its application method under the conditions of a kind of more culverts - Google Patents
Earth pressure test instrument and its application method under the conditions of a kind of more culverts Download PDFInfo
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- CN107121229B CN107121229B CN201710299215.1A CN201710299215A CN107121229B CN 107121229 B CN107121229 B CN 107121229B CN 201710299215 A CN201710299215 A CN 201710299215A CN 107121229 B CN107121229 B CN 107121229B
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- 238000000034 method Methods 0.000 title claims abstract description 69
- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 239000002689 soil Substances 0.000 claims abstract description 44
- 230000000694 effects Effects 0.000 claims abstract description 8
- 230000007423 decrease Effects 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 25
- 230000033001 locomotion Effects 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 11
- 230000002459 sustained effect Effects 0.000 claims description 5
- 238000010998 test method Methods 0.000 claims description 5
- 239000003086 colorant Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000011160 research Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004043 dyeing Methods 0.000 claims 1
- 230000001151 other effect Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 12
- 238000013461 design Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/30—Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to a kind of earth pressure test instrument and its application method under the conditions of more culverts, including chamber and lifting device, first unit plate and second unit plate is arranged in chamber bottom；Lifting device includes lifting power plant, push pipe platform board, push pipe, the mobile bracket of push pipe；Push pipe platform board is risen or is landed by lifting power plant；Push pipe can be slided in the sliding slot of push pipe platform board, be provided with attachment device between the mobile bracket of adjacent push-and-pull push pipe.The application method of above-mentioned apparatus includes: to adjust the position of push pipe, adjusts the position of the mobile bracket of adjacent push pipe, rises push pipe to fix first unit plate, gradually decreases first unit template die and intends actual condition.It is accurate and other effects with time saving and energy saving economy, result when comparing the culvert of different location, soil arching effect is tested using the device of the invention and application method.
Description
Technical field
The present invention relates to engineering test facility fields, and in particular to a kind of earth pressure test instrument under the conditions of more culverts and
Its application method.
Background technique
Existing soil arching effect test apparatus is more, but less to the research in the repeatability of test.Apply for " one on the same day
Kind horizontal sliding type soil arching effect experimental rig and its application method " is the basic patent of the application, the testing equipment of this application
(single culvert) is tested primarily directed to the soil arching effect of the culvert under different location, double culvert, three culverts etc. can't be done
Test under the conditions of more culverts.
Summary of the invention
The object of the present invention is to provide the earth pressure test instrument and its application method under the conditions of a kind of more culverts, the devices
For studying the arching of more culverts at different locations.
For achieving the above object, technical solution used by the invention patent is: the soil under the conditions of a kind of more culverts
Pressure test instrument, including chamber (4) and lifting device (6)；Chamber (4) bottom setting first unit plate (5-4) with
Second unit plate (5-3)；First unit plate (5-4) can be up and down, second unit plate (5-3) fixed setting；The lifting
Device (6) includes lifting power plant (6-1), push pipe platform board (6-2), push pipe (6-3), push pipe movement bracket (6-5)；It is described
Push pipe platform board (6-2) is risen or is landed by lifting power plant (6-1), is the mobile branch of push pipe above push pipe platform board (6-2)
Frame (6-5), push pipe mobile bracket (6-5) is corresponding with first unit plate (5-4), and push pipe (6-3) setting is in the mobile bracket of push pipe
On (6-5)；Sliding groove (6-7) is set above the push pipe platform board (6-2), push pipe mobile bracket (6-5) is divided into from bottom to top:
Sliding component (6-5-2), sliding movable plate (6-5-1), push pipe installation part (6-5-3)；Push pipe (6-3) is mounted on the mobile branch of push pipe
On the push pipe installation part (6-5-3) of frame；Sliding component (6-5-2) can be in the sliding groove (6-7) above push pipe platform board (6-2)
Middle movement；Immediately below the first unit plate (5-4) corresponding push pipe (6-3)；It is arranged between adjacent push pipe mobile bracket (6-5)
There is attachment device, which includes: the first fixed charge method end plate (6-8-1), connecting elements (6-6), the second fixed charge method end plate (6-8-2),
First fixed charge method end plate (6-8-1) and the second fixed charge method end plate (6-8-2) are separately positioned on adjacent push pipe mobile bracket (6-5),
Connecting elements (6-6) is arranged between the first fixed charge method end plate (6-8-1) and the second fixed charge method end plate (6-8-2)；Connecting elements and
One fixed charge method end plate (6-8-1) and the second fixed charge method end plate (6-8-2) are fixed together.
Further, it is provided on the second fixed charge method end plate (6-8-2) long through-hole (6-8-3), connecting elements (6-6) includes connecting
Connection member ontology (6-6-1), through-hole (6-6-3), bolt (6-6-4) pass through the through-hole (6-6-3) and second of connecting elements ontology
Connecting elements ontology and the second fixed charge method end plate are fixed on one by the long through-hole (6-8-3) of fixed charge method end plate (6-8-2), then attaching nut
It rises.
Further, connecting elements ontology (6-6-1) is inserted into the jack of the first fixed charge method end plate (6-8-1), solid first
Integrally formed with block on the connecting elements ontology (6-6-1) on inside one side of fixed end plate (6-8-1), nut (6-6- is then used
2) it is fixed on the part of connecting elements ontology (6-6-1) prominent first fixed charge method end plate.
Further, the through-hole (6-6-3) of connecting elements ontology (6-6-1) is that interval is equal at connecting elements ontology (6-6-1)
Even distribution, the spacing of the through-hole (6-6-3) of connecting elements ontology (6-6-1) are less than the distance of long through-hole (6-8-3).
Further, scale is provided on connecting elements ontology (6-6-1).
Further, it is arranged on push pipe platform board (6-2) horizontal push-pull device at fixed (6-4), horizontal push-pull device at fixed (6-4) is used for
Push pipe mobile bracket (6-5) movement in sliding groove (6-7), the horizontal push-pull device at fixed (6-4) include: horizontal push-and-pull power dress
Set (6-4-1), push-pull shaft, push-and-pull end plate (6-4-2) and bolt (6-4-3), level push-and-pull outer end power device (6-4-1)
It is connected with push-pull shaft, push-pull shaft outer end is connected with push-and-pull end plate (6-4-2), and running through in push-and-pull end plate (6-4-2) has threaded hole；It is sliding
Threaded hole is arranged in the side of dynamic movable plate (6-5-1), and bolt (6-4-3) sequentially passes through the threaded hole of push-and-pull end plate (6-4-2), cunning
The threaded hole of dynamic movable plate (6-5-1) is provided with nut in push-and-pull end plate side, to push and pull end plate (6-4-2) and sliding
Movable plate (6-5-1) is fixed together.Horizontal push-pull device at fixed (6-4) setting is in the two sides of push pipe mobile bracket (6-5).
Further, it is provided with RF transmitter and infrared sensor, RF transmitter and infrared ray on the rack
The direction of sensor and the direction of sliding groove are vertical, and RF transmitter and infrared sensor are in sustained height, height
In the horizontal plane where sliding movable plate (6-5-1) and push pipe (6-3)；When infrared sensor receives infrared device transmitter
Signal when, horizontal push-pull device at fixed (6-4) pushes push pipe mobile bracket (6-5) mobile；When push pipe (6-3) blocks infrared device transmitting
When device signal, horizontal push-pull device at fixed (6-4) stop motion.
Further, the quantity of the sliding groove (6-7) is two or more, and shape isShape；Sliding component (6-
5-2) shape isShape, push pipe mobile bracket (6-5) need by the way of being laterally inserted into when being inserted into sliding groove (6-7)
To place；The sliding component (6-5-2), sliding movable plate (6-5-1), push pipe installation part (6-5-3) are integrally formed；The top
Pipe (6-3) is used with push pipe installation part (6-5-3) and is threadedly coupled.
Further, chamber (4) is fixed on the bearing platform (3) of rack, the rack include upper beam (1-1), under
Load-bearing is set on crossbeam (1-4), platform beams (1-2), column (2), stringer (1-3), platform beams (1-2) and stringer (1-3)
Platform (3), shown chamber (4) are fixed on bearing platform (3)；Upper beam (1-1) is distinguished at the position of lower beam (1-4)
Stringer (1-3) is set to form rack framework；Chamber (4) includes the organic glass (4-2) of casing body frame (4-1) and surrounding,
Body frame (4-1) includes upper layer crossbeam and lower layer's crossbeam and four columns, and glass is arranged in lower layer's crossbeam, four columns and inserts
Slot, organic glass (4-2) is by slot according on casing body frame (4-1), and upper layer crossbeam lower surface is provided with slot, further
Fixed organic glass (4-2)；Drawing on organic glass backboard has scale grid.The surrounding of the chamber (4) is provided with baffle,
The side for the second unit plate being in contact with first unit plate is also equipped with baffle (7).
Further, when studying active arching, first unit plate (5-4) is for simulating culvert, second unit plate (5-3)
For simulating filled ground；When studying passive arching, first unit plate (5-4) is for simulating filled ground, second unit
Plate (5-3) is for simulating culvert.
Further, loading system and box house filler system for monitoring displacement are additionally provided with above chamber (4)；Load system
System includes the jack being connected with upper beam (1-1), and with jack lower part device for measuring force interconnected, device for measuring force
Using proving ring, proving ring lower part is connect with the load plate above chamber (4)；Or loading system is vibration excitor；In cabinet
Portion's filler system for monitoring displacement includes: that digital camera is provided on front side of chamber short side direction, and/or long in experiment casing
The digital camera or CT Scanner of the corresponding two sides setting of edge direction.
Further, each lifting device (6) and horizontal push-pull device at fixed (6-4) and RF transmitter with
Infrared sensor is connect with PLC, and the movement of the lifting power plant (6-1) in lifting device is controlled by PLC, and
Level push-and-pull power device (6-4-1).
A kind of application method of earth pressure test instrument under the conditions of more culverts, test procedure include the following steps:
(1) push pipe is installed: push pipe mobile bracket (6-5) is inserted into sliding groove (6- from the side of push pipe platform board (6-2)
7) in, horizontal push-and-pull power device (6-4-1) is then fixedly mounted on push pipe platform board (6-2), then the horizontal push-and-pull of starting
Power device (6-4-1), so that the push-and-pull end plate (6-4-2) that horizontal push-and-pull power device (6-4-1) is fixed touches push pipe shifting
Sliding movable plate (6-5-1) in dynamic bracket (6-5) pushes and pulls the threaded hole on end plate (6-4-2) and sliding movable plate (6-5-1)
Threaded hole alignment, bolt is inserted into threaded hole, installation nut will push and pull end plate (6-4-2) and sliding movable plate (6-5-
1) it is fixed together；It is provided with push pipe installation part (6-5-3) above sliding movable plate (6-5-1), push pipe (6-3) is installed to
On push pipe installation part (6-5-3)；
(2) it adjusts the distance between adjacent push pipe mobile bracket (6-5): connecting elements ontology (6-6-1) is fixed on
First fixed charge method end plate (6-8-1), then by the scale on connecting elements ontology (6-6-1), by the mobile bracket of adjacent push pipe
Distance reaches pre-determined distance between (6-5), then passes through bolt (6-6-4) for the second fixed charge method end plate (6-8-2) and connecting elements
Ontology (6-6-1) is connected and fixed；
(3) adjust the position of push pipe: both sides on the rack are provided with RF transmitter and infrared sensor, infrared
The direction of line transmitter and infrared sensor is vertical with the direction of sliding groove, and RF transmitter and infrared sensor are in
Sustained height, height are in the horizontal plane where sliding movable plate (6-5-1) and push pipe (6-3)；
When infrared sensor receives the signal of infrared device transmitter, horizontal push-pull device at fixed (6-4) pushes push pipe mobile
Bracket (6-5) is mobile；When push pipe (6-3) blocks infrared device launcher signal, horizontal push-pull device at fixed (6-4) stop motion；
Start RF transmitter and infrared sensor, horizontal push-pull device at fixed (6-4) pushes top under the control of PLC
Pipe mobile bracket (6-5) arrives predeterminated position, so that push pipe (6-3) is just in the lower section of first unit plate (5-4)；
(4) second unit plate (5-3) is mounted in chamber, the jack of the first unit plate bottom (5-4) setting is inserted
Enter on push pipe (6-3)；Lifting device (6) are controlled by PLC, rise the upper table that push pipe (6-3) makes first unit plate (5-4)
Face height reaches preset height；
(5) soil sample is prepared, the soil body is filled in chamber: three kinds of colors of preparation: yellow, green, the red soil body, using washing mill base
Soil sample is dyed, is taken out after placing it in baking oven 25h, broken be cooled to room temperature is rubbed；Then according to it is yellow, green, red it is circulated layered
The soil body is set in cabinet, until the soil body fills arrival preset height；
(6) process is tested: control lifting power plant (6-1), so that push pipe platform board (6-2) and push pipe (6-3) are gradually
Decline, it is final that first unit plate (5-4) is driven gradually to decline.
Further, test procedure further include:
In step (4), after completing first unit plate (5-4) installation, before banketing, on first unit plate (5-4)
Surface layout soil pressure cell；
In step (6), after on-test, loading system carries out the load of load to filler；
In step (6), digital camera shoots a soil body filler photograph when push pipe (6-3) often moves down 0.1mm, simultaneously
Soil pressure cell also acquires a data.
In test procedure (6), after chamber soil body upper level is reduced to preset height, lifting device and loading system
It stops working, continues to banket, after the completion of banketing, control lifting device and loading system running again, continue to test.
The present invention has the advantages that 1) present invention can easily study the test of a plurality of pipe culvert active/passive arching.
2) by the design of connecting elements, two functions of power transmission and measurement are converged on a component, simplify the mobile bracket of push pipe
Design.It 3) may be also soil arch effect using RF transmitter-sensor come the position mobile to the mobile bracket of design push pipe
It answers in test apparatus and applies for the first time, power device is pushed and pulled come controlled level by PLC, improves the automatization level of equipment.
Detailed description of the invention
Fig. 1 is one case history comparison diagram of embodiment.
Fig. 2 is experimental rig side view.
Fig. 3 is that one chamber bearing platform of embodiment constructs top view.
Fig. 4 is one chamber structure chart of embodiment.
Fig. 5 is that the first the first unit plate of embodiment one and second unit plate install top view.
Fig. 6 is one push pipe of embodiment and first unit plate relational graph.
Fig. 7 is the mobile bracket top view of one push pipe of embodiment.
Fig. 8 is one Section A-A figure of embodiment.
Fig. 9 is horizontal push-pull device at fixed top view.
Figure 10 is the mobile bracket connecting apparatus design diagram of adjacent push pipe.
Figure 11 is the mobile bracket connecting apparatus design detail of adjacent push pipe.
Figure 12 is the second fixed charge method end plate side view.
Appended drawing reference: upper beam 1-1, platform beams 1-2, stringer 1-3, lower beam 1-4；Column 2；Bearing platform 3；Test
Case 4, casing body frame 4-1, organic glass 4-2；Second unit plate 5-3, first unit plate 5-4；Lifting device 6, lifting drive dress
6-1, push pipe platform board 6-2, push pipe 6-3, horizontal push-pull device at fixed 6-4 are set, level push-and-pull power device 6-4-1 pushes and pulls end plate 6-
4-2, bolt 6-4-3, the mobile bracket 6-5 of push pipe, slide movable plate 6-5-1, sliding component 6-5-2, push pipe installation part 6-5-3,
Connecting elements 6-6, member bodies 6-6-1, nut 6-6-2, the through-hole 6-6-3 of member bodies, bolt 6-6-4, sliding groove 6-7,
Long through-hole 6-8-3 on first fixed charge method end plate 6-8-1, the second fixed charge method end plate 6-8-2, the second fixed charge method end plate 6-8-2；Baffle 7.
Specific embodiment
In conjunction with attached drawing, technical solution of the present invention is described in more detail.
Embodiment one: case history one is the pipe culvert under plane strain condition: as shown in Fig. 1, being compared under two kinds of situations
The variation of the soil pressure on pipe culvert surface, 2 pipe culvert diameter 1m backfill the wide 4m of the soil body, backfill height 2m, cross section are as follows: 0.5m wide
Soil+1m pipe culvert+1m soil+1m pipe culvert+0.5m soil；In test: upside of banketing also needs to consider traffic loading.According to 1 in test:
1 scale modeling.
As Figure 2-3: soil arching effect simulation test device includes: rack, chamber 4, lifting device 6；Wherein, rack
Including 2,6 two upper beam 1-1, two lower beam 1-4, two platform beams 1-2, four columns stringer 1-3, platform beams
Bearing platform 3 is set on 1-2 and stringer 1-3, and chamber 4 is fixed on bearing platform 3；Upper beam 1-1, the position of lower beam 1-4
2 stringer 1-3 are respectively set to form rack framework in the place of setting.
As shown in figure 4, chamber 4 is the organic glass 4-2 for including casing body frame 4-1 and surrounding, body frame 4-1 includes upper layer
Crossbeam and lower layer's crossbeam and four columns, are arranged glass slot in lower layer's crossbeam, four columns, and organic glass 4-2 passes through
For slot according on casing body frame 4-1, upper layer crossbeam lower surface is provided with slot, further fixes organic glass 4-2；Organic glass
Drawing on glass backboard has scale grid；Filler layering is carried out according to scale grid.
As shown in figure 5, first unit plate 5-4 and second unit plate 5-3, first unit plate 5-4 is arranged in 4 bottom of chamber
Can be up and down, for simulating culvert, second unit plate 5-3 fixed setting, for simulating filled ground；In this test,
The setting of unit board width are as follows: 0.5m second unit plate 5-3+1m first unit plate 5-4+1m second unit plate 5-3+1m first is single
First plate 5-4+0.5m second unit plate 5-3；The length of first unit plate and second unit plate is 1m and is integral slab, and second
Cell board is directly anchored on wall box by screw or other modes.
As shown in fig. 6, lifting device 6 includes: lifting power plant 6-1, push pipe platform board 6-2, push pipe 6-3, push pipe shifting
Dynamic bracket 6-5；Lifting power plant uses hydraulic cylinder, can also be using other power devices such as screw rods；Push pipe platform board 6-2
It is driven by lifting power plant and rises or land；It is the mobile bracket 6-5 of push pipe above push pipe platform board 6-2, push pipe 6-3 setting exists
On the mobile bracket 6-5 of push pipe；Sliding groove 6-7 is set above the push pipe platform board 6-2.
As Figure 7-8, the mobile bracket 6-5 of push pipe is divided into from bottom to top: sliding component 6-5-2, sliding movable plate 6-5-
1, push pipe installation part 6-5-3；Push pipe 6-3 is mounted on the push pipe installation part 6-5-3 of the mobile bracket of push pipe；Sliding component 6-5-2
It can be moved in the sliding groove 6-7 above push pipe platform board 6-2.
Push pipe 6-3 and push pipe installation part 6-5-3 is using threaded connection or welding or the connection sides such as clamping or grafting
Formula.
It is as shown in Figure 8: horizontal push-pull device at fixed 6-4 is set on push pipe platform board 6-2, and horizontal push-pull device at fixed 6-4 is for pushing up
The mobile bracket 6-5 of pipe is moved in sliding groove 6-7；As shown in Figure 9: the horizontal push-pull device at fixed 6-4 includes: horizontal push-and-pull power
Device 6-4-1, push-pull shaft, push-and-pull end plate 6-4-2 and bolt 6-4-3, the level push-and-pull outer end power device 6-4-1 are connected with
Push-pull shaft, push-pull shaft outer end are connected with push-and-pull end plate 6-4-2, in push-and-pull end plate 6-4-2 through there is threaded hole, slide movable plate 6-
Threaded hole is arranged in the side of 5-1, and bolt 6-4-3 passes through the threaded hole of push-and-pull end plate 6-4-2 and the side of sliding movable plate 6-5-1
Threaded hole links together, and push-and-pull end plate side is provided with nut, to push and pull end plate 6-4-2 and sliding movable plate 6-5-
1 is fixed together.
The side of the mobile bracket 6-5 of push pipe is arranged in the horizontal push-pull device at fixed 6-4.
It is provided with RF transmitter and infrared sensor on the rack, RF transmitter and infrared sensor
Direction is vertical with the direction of sliding groove, and RF transmitter and infrared sensor are in sustained height, and height is in sliding
In horizontal plane where movable plate 6-5-1 and push pipe 6-3；When infrared sensor receives the signal of infrared device transmitter, water
Flat-pushing drawing device 6-4 pushes the mobile bracket 6-5 of push pipe mobile；When push pipe 6-3 blocks infrared device launcher signal, level push-and-pull
Device 6-4 stop motion.
The quantity of the sliding groove 6-7 is two, and shape isShape；Sliding component 6-5-2 shape isShape, push pipe mobile bracket 6-5 need to place by the way of being laterally inserted into when being inserted into sliding groove 6-7；The sliding
Component 6-5-2, sliding movable plate 6-5-1, push pipe installation part 6-5-3 are integrally formed.
As shown in fig. 6, the surrounding of the chamber 4 is provided with baffle, the second unit plate being in contact with first unit plate
Side be also equipped with baffle 7.
As shown in figs. 10-12, the mobile bracket 6-5 of a push pipe, this test are corresponding with below each first unit plate
In be provided with the mobile bracket 6-5 of two push pipes, be provided with attachment device between the mobile bracket 6-5 of two push pipes, adjacent two
The mobile bracket 6-5 of push pipe adjusts spacing between the two by attachment device, the device include: the first fixed charge method end plate 6-8-1,
Connecting elements 6-6, the second fixed charge method end plate 6-8-2, the first fixed charge method end plate 6-8-1 and the second fixed charge method end plate 6-8-2 are separately positioned on
On the mobile bracket 6-5 of adjacent push pipe；Connecting elements includes connecting elements ontology 6-6-1, nut 6-6-2, through-hole 6-6-3；Even
Connection member ontology 6-6-1 is arranged between the first fixed charge method end plate 6-8-1 and the second fixed charge method end plate 6-8-2, connecting elements ontology 6-
6-1 is inserted into the jack of the first fixed charge method end plate 6-8-1, the connecting elements 6- on inside one side of the first fixed charge method end plate 6-8-1
6-1 is upper integrally formed with block, is then fixed on prominent first fixed charge method end plate of connecting elements ontology 6-6-1 with nut 6-6-2
Part is uniformly distributed at the interval connecting elements ontology 6-6-1 and is provided with through-hole 6-6-3, is arranged on the second fixed charge method end plate 6-8-2
There is long through-hole 6-8-3, also, the spacing of the through-hole 6-6-3 of connecting elements ontology 6-6-1 is less than the distance of long through-hole 6-8-3, with
Through-hole 6-6-3 at least 1 of guarantee connecting elements is between long through-hole 6-8-3.
Be provided with scale on connecting elements ontology 6-6-1, the first fixed charge method end plate 6-8-1 and the second fixed charge method end plate 6-8-2 it
When preceding distance reaches pre-determined distance, the through-hole 6-6-3 and the second fixed charge method end plate 6-8- of connecting elements are passed through by bolt 6-6-4
Connecting elements and the second fixed charge method end plate are fixed together by 2 long through-hole 6-8-3 by nut.The design is by " power transmission " and " carves
Two functions of measurement survey " are combined into one.
Second fixed charge method end plate 6-8-2 is distributed in the two sides of connecting elements ontology 6-6-1.
Loading system and box house filler system for monitoring displacement are additionally provided with above chamber 4；Loading system include with
The jack that upper beam 1-1 is connected, and with jack lower part device for measuring force interconnected, device for measuring force use dynamometry
Ring, proving ring lower part are connect with the load plate of 4 top of chamber；Or loading system is vibration excitor；The displacement of box house filler
Monitoring system includes: that digital camera is provided on front side of chamber short side direction, and/or opposite in experiment casing longitudinal direction
The digital camera or CT Scanner for the two sides setting answered.
Each lifting device 6 and horizontal push-pull device at fixed 6-4 and RF transmitter and infrared ray sensing
Device is connect with PLC, and the movement of the lifting power plant 6-1 in lifting device, and horizontal push-and-pull power are controlled by PLC
Device 6-4-1.In addition, having the case where uniform load to simulate pipe culvert top, it is additionally provided with loading system above chamber 4, is added
Loading system includes the jack being connected with upper beam 1-1, and with jack lower part device for measuring force interconnected, dynamometry dress
It sets using proving ring, proving ring lower part is connect with the load plate of 4 top of chamber；In order to simulate the traffic loading on pipe culvert top,
Loading system is replaced by vibration excitor.
Be provided with digital camera on front side of chamber short side direction, so as to measure test during the soil body displacement field.
In the present embodiment: as shown in fig. 6, first unit plate 5-4 is a hollow box body, lower surface is provided with and push pipe 6-4
The corresponding jack in section, push pipe can directly contact the upper surface of first unit plate 5-4, preferably control the heavy of first unit plate
Drop process, the effect of jack is to limit first unit plate and push pipe, and fixes first unit plate in lifting process and do not send out
Raw horizontal displacement.
Test process: push pipe (1) is installed: the mobile bracket 6-5 of push pipe is inserted into sliding from the side of push pipe platform board 6-2
In slot 6-7, horizontal push-and-pull power device 6-4-1 is then fixedly mounted on push pipe platform board 6-2, then the horizontal push-and-pull of starting is dynamic
Power device 6-4-1, so that horizontal push-and-pull power device 6-4-1 fixed push-and-pull end plate 6-4-2 touches the mobile bracket 6-5 of push pipe
In sliding movable plate 6-5-1, push and pull end plate 6-4-2 on threaded hole with slide movable plate 6-5-1 threaded hole be aligned, by spiral shell
Bolt is inserted into threaded hole, and installation nut will push and pull end plate 6-4-2 and sliding movable plate 6-5-1 and be fixed together；It is moved in sliding
On the push pipe installation part 6-5-3 being arranged above movable plate 6-5-1, push pipe 6-3 is installed on push pipe installation part 6-5-3；(2) it adjusts
The distance between mobile bracket 6-5 of adjacent push pipe: connecting elements ontology 6-6-1 is fixed on the first fixed charge method end plate 6-8-1, so
Afterwards by the scale on connecting elements ontology 6-6-1, distance between the mobile bracket 6-5 of adjacent push pipe is reached into pre-determined distance,
Then the second fixed charge method end plate 6-8-2 and connecting elements ontology 6-6-1 are connected and fixed by bolt 6-6-4；(3) it adjusts
The position of push pipe: both sides on the rack are provided with RF transmitter and infrared sensor, RF transmitter and infrared
The direction of line sensor and the direction of sliding groove are vertical, and RF transmitter and infrared sensor are in sustained height, high
Degree is in the horizontal plane where sliding movable plate 6-5-1 and push pipe 6-3；When infrared sensor receives infrared device transmitter
When signal, horizontal push-pull device at fixed 6-4 pushes the mobile bracket 6-5 of push pipe mobile；When push pipe 6-3 blocks infrared device launcher signal
When, horizontal push-pull device at fixed 6-4 stop motion；Starting RF transmitter and infrared sensor, horizontal push-pull device at fixed 6-4 exist
Under the control of PLC, push the mobile bracket 6-5 of push pipe to predeterminated position, so that push pipe 6-3 is just at first unit plate 5-4
Side；(4) second unit plate 5-3 is mounted in chamber, the jack that the first unit bottom plate 5-4 is arranged is inserted into push pipe 6-
On 3；Lifting device 6 is controlled by PLC, push pipe 6-3 is risen and the upper level of first unit plate 5-4 is made to reach default height
Degree；After completing first unit plate 5-4 installation, before banketing, soil pressure cell is arranged in the first unit upper surface plate 5-4；(5)
Prepare soil sample, the soil body is filled in chamber: three kinds of colors of preparation: yellow, green, the red soil body is dyed soil sample using washing mill base,
It is taken out after placing it in baking oven 25h, rubs broken be cooled to room temperature；Then according to yellow, green, the red circulated layered setting soil in cabinet
Body, until the soil body fills arrival preset height；(6) process is tested: control lifting power plant 6-1, so that push pipe platform board 6-2
Gradually decline with push pipe 6-3, it is final that first unit plate 5-4 is driven gradually to decline；After on-test, loading system carries out filler
The load of load；Digital camera shoots a soil body filler photograph, while soil pressure cell when push pipe 6-3 often moves down 0.1mm
Acquire a data；After chamber soil body upper level is reduced to preset height, lifting device and loading system stop working,
Continue to banket, after the completion of banketing, controls lifting device and loading system running again, continue to test.(7) first unit is drawn
Plate vertical displacement-soil pressure change curve.
Using the present apparatus, when comparative test when doing multiple culvert can reduce a large amount of repeated work, experimentation cost
There is saving by a relatively large margin with test period.
Claims (9)
1. the earth pressure test instrument under the conditions of a kind of more culverts, including chamber (4) and lifting device (6)；
It is characterized by:
Bottom setting first unit plate (5-4) and second unit plate (5-3) of chamber (4)；First unit plate (5-4) can on
Lower activity, for simulating culvert, second unit plate (5-3) fixed setting, for simulating filled ground；
The lifting device (6) includes lifting power plant (6-1), push pipe platform board (6-2), push pipe (6-3), the mobile branch of push pipe
Frame (6-5)；The push pipe platform board (6-2) is risen or is landed by lifting power plant (6-1), above push pipe platform board (6-2)
Mobile bracket (6-5) for push pipe, push pipe mobile bracket (6-5) is corresponding with first unit plate (5-4), and push pipe (6-3) setting exists
On push pipe mobile bracket (6-5)；
Sliding groove (6-7) is set above the push pipe platform board (6-2), push pipe mobile bracket (6-5) is divided into from bottom to top: sliding
Component (6-5-2), sliding movable plate (6-5-1), push pipe installation part (6-5-3)；Push pipe (6-3) is mounted on the mobile bracket of push pipe
On push pipe installation part (6-5-3)；Sliding component (6-5-2) can be transported in the sliding groove (6-7) above push pipe platform board (6-2)
It is dynamic；
Immediately below the first unit plate (5-4) corresponding push pipe (6-3)；
Be provided with attachment device between adjacent push pipe mobile bracket (6-5), the device include: the first fixed charge method end plate (6-8-1),
Connecting elements (6-6), the second fixed charge method end plate (6-8-2), the first fixed charge method end plate (6-8-1) and the second fixed charge method end plate (6-8-2) point
It is not arranged on adjacent push pipe mobile bracket (6-5), connecting elements (6-6) setting is in the first fixed charge method end plate (6-8-1) and the
Between two fixed charge method end plates (6-8-2)；Connecting elements and the first fixed charge method end plate (6-8-1) and the second fixed charge method end plate (6-8-2) are fixed
Together；
Soil pressure cell is arranged in the first unit plate upper surface (5-4).
2. the earth pressure test instrument under the conditions of a kind of more culverts as described in claim 1, it is characterised in that: fixed second
It is provided on end plate (6-8-2) long through-hole (6-8-3), connecting elements (6-6) includes connecting elements ontology (6-6-1), through-hole (6-
6-3), bolt (6-6-4) passes through the through-hole (6-6-3) of connecting elements ontology and the long through-hole (6- of the second fixed charge method end plate (6-8-2)
8-3), then connecting elements ontology and the second fixed charge method end plate are fixed together by attaching nut.
3. the earth pressure test instrument under the conditions of a kind of more culverts as claimed in claim 2, it is characterised in that: connecting elements sheet
Body (6-6-1) is inserted into the jack of the first fixed charge method end plate (6-8-1), on inside one side of the first fixed charge method end plate (6-8-1)
Integrally formed with block on connecting elements ontology (6-6-1), connecting elements ontology (6-6- then is fixed on nut (6-6-2)
1) part of prominent first fixed charge method end plate.
4. the earth pressure test instrument under the conditions of a kind of more culverts as claimed in claim 3, it is characterised in that: connecting elements sheet
The through-hole (6-6-3) of body (6-6-1) is uniformly distributed on connecting elements ontology (6-6-1), and connecting elements ontology (6-6-1) leads to
The spacing in hole (6-6-3) is less than the distance of long through-hole (6-8-3).
5. the earth pressure test instrument under the conditions of a kind of more culverts as claimed in claim 4, it is characterised in that: connecting elements sheet
Scale is provided on body (6-6-1).
6. the earth pressure test instrument under the conditions of a kind of more culverts a method as claimed in any one of claims 1 to 5, it is characterised in that: pushing up
It is arranged on pipe platform board (6-2) horizontal push-pull device at fixed (6-4), horizontal push-pull device at fixed (6-4) exists for push pipe mobile bracket (6-5)
Movement in sliding groove (6-7), the horizontal push-pull device at fixed (6-4) include: horizontal push-and-pull power device (6-4-1), push-pull shaft, push away
Pull end plate (6-4-2) and bolt (6-4-3), level push-and-pull outer end power device (6-4-1) are connected with push-pull shaft, push-pull shaft
Outer end is connected with push-and-pull end plate (6-4-2), and running through in push-and-pull end plate (6-4-2) has threaded hole；
Threaded hole is arranged in the side for sliding movable plate (6-5-1), and bolt (6-4-3) sequentially passes through the spiral shell of push-and-pull end plate (6-4-2)
Pit, the threaded hole for sliding movable plate (6-5-1) are provided with nut in push-and-pull end plate side, to push and pull end plate (6-4-2)
It is fixed together with sliding movable plate (6-5-1)；
Horizontal push-pull device at fixed (6-4) setting is in the two sides of push pipe mobile bracket (6-5)；
Rack includes upper beam (1-1), lower beam (1-4), platform beams (1-2), column (2), stringer (1-3), platform beams
Bearing platform (3) are set on (1-2) and stringer (1-3), shown chamber (4) is fixed on bearing platform (3)；Upper beam (1-
1) stringer (1-3) is respectively set at the position of lower beam (1-4), to form rack framework；
It is provided with RF transmitter and infrared sensor, the direction of RF transmitter and infrared sensor on the rack
Vertical with the direction of sliding groove, RF transmitter and infrared sensor are in sustained height, and height is in sliding movement
In plate (6-5-1) and horizontal plane where push pipe (6-3)；When infrared sensor receives the signal of infrared device transmitter, water
Flat-pushing drawing device (6-4) pushes push pipe mobile bracket (6-5) mobile；When push pipe (6-3) blocks infrared device launcher signal, water
Flat-pushing drawing device (6-4) stop motion；
The quantity of the sliding groove (6-7) is two or more, and shape isShape；Sliding component (6-5-2) shape isShape, push pipe mobile bracket (6-5) need to place by the way of being laterally inserted into when being inserted into sliding groove (6-7)；It is described
Sliding component (6-5-2), sliding movable plate (6-5-1), push pipe installation part (6-5-3) are integrally formed；The push pipe (6-3) and top
Pipe installation part (6-5-3) is using threaded connection.
7. the earth pressure test instrument under the conditions of a kind of more culverts as claimed in claim 6, it is characterised in that: when research active
When arching, first unit plate (5-4) is for simulating culvert, and second unit plate (5-3) is for simulating filled ground；When research quilt
When dynamic arching, first unit plate (5-4) is for simulating filled ground, and second unit plate (5-3) is for simulating culvert.
8. the earth pressure test instrument under the conditions of a kind of more culverts as claimed in claim 7, it is characterised in that: the lifting
Device (6) and horizontal push-pull device at fixed (6-4) and RF transmitter are connect with PLC with infrared sensor, are passed through
PLC controls the movement of the lifting power plant in lifting device (6-1), and horizontal push-and-pull power device (6-4-1).
9. a kind of application method of the earth pressure test instrument under the conditions of more culverts, it is characterised in that: more culvert conditions
Under earth pressure test instrument be earth pressure test instrument under the conditions of more culverts as claimed in claim 6, test procedure packet
Include following steps:
(1) push pipe is installed: push pipe mobile bracket (6-5) is inserted into sliding groove (6-7) from the side of push pipe platform board (6-2)
In, horizontal push-and-pull power device (6-4-1) is then fixedly mounted on push pipe platform board (6-2), then the horizontal push-and-pull of starting is dynamic
Power device (6-4-1), so that the push-and-pull end plate (6-4-2) that horizontal push-and-pull power device (6-4-1) is fixed touches push pipe movement
Sliding movable plate (6-5-1) in bracket (6-5) pushes and pulls the threaded hole on end plate (6-4-2) and slides movable plate (6-5-1)
Threaded hole alignment, bolt is inserted into threaded hole, and installation nut will push and pull end plate (6-4-2) and sliding movable plate (6-5-1)
It is fixed together；It is provided with push pipe installation part (6-5-3) above sliding movable plate (6-5-1), push pipe (6-3) is installed to top
On pipe installation part (6-5-3)；
(2) it adjusts the distance between adjacent push pipe mobile bracket (6-5): connecting elements ontology (6-6-1) is fixed on first
Fixed charge method end plate (6-8-1), it is then by the scale on connecting elements ontology (6-6-1), adjacent push pipe is mobile bracket (6-5)
Between distance reach pre-determined distance, then by bolt (6-6-4) by the second fixed charge method end plate (6-8-2) and connecting elements ontology
(6-6-1) is connected and fixed；
(3) adjust the position of push pipe: both sides on the rack are provided with RF transmitter and infrared sensor, infrared ray hair
The direction of emitter and infrared sensor is vertical with the direction of sliding groove, and RF transmitter and infrared sensor are in same
Highly, height is in the horizontal plane where sliding movable plate (6-5-1) and push pipe (6-3)；
When infrared sensor receives the signal of infrared device transmitter, horizontal push-pull device at fixed (6-4) pushes the mobile bracket of push pipe
(6-5) is mobile；When push pipe (6-3) blocks infrared device launcher signal, horizontal push-pull device at fixed (6-4) stop motion；
Start RF transmitter and infrared sensor, horizontal push-pull device at fixed (6-4) pushes push pipe to move under the control of PLC
Dynamic bracket (6-5) arrives predeterminated position, so that push pipe (6-3) is just in the lower section of first unit plate (5-4)；
(4) second unit plate (5-3) is mounted in chamber, the jack that the first unit plate bottom (5-4) is arranged is inserted into
On push pipe (6-3)；Lifting device (6) are controlled by PLC, push pipe (6-3) is risen and makes the upper surface of first unit plate (5-4) high
Degree reaches preset height；After completing first unit plate (5-4) installation, before banketing, in the upper surface first unit plate (5-4)
Arrange soil pressure cell；
(5) soil sample is prepared, the soil body is filled in chamber: three kinds of colors of preparation: yellow, green, the red soil body, it will be native using washing mill base
Sample dyeing, takes out after placing it in baking oven 25h, rubs broken be cooled to room temperature；Then according to yellow, green, red circulated layered in cabinet
The interior setting soil body, until the soil body fills arrival preset height；
(6) process is tested: control lifting power plant (6-1), so that push pipe platform board (6-2) and push pipe (6-3) gradually decline,
It is final that first unit plate (5-4) is driven gradually to decline；
In step (6), after on-test, loading system carries out the load of load to filler；
In step (6), digital camera shoots a soil body filler photograph, while soil pressure when push pipe (6-3) often moves down 0.1mm
Power box also acquires a data；
In test procedure (6), after chamber soil body upper level is reduced to preset height, lifting device and loading system stop
Work, continues to banket, and after the completion of banketing, controls lifting device and loading system running again, continues to test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299215.1A CN107121229B (en) | 2017-05-01 | 2017-05-01 | Earth pressure test instrument and its application method under the conditions of a kind of more culverts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299215.1A CN107121229B (en) | 2017-05-01 | 2017-05-01 | Earth pressure test instrument and its application method under the conditions of a kind of more culverts |
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| CN107121229B true CN107121229B (en) | 2019-05-21 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05339976A (en) * | 1992-06-12 | 1993-12-21 | Yoshihiro Nakagawa | Reducing method of earth pressure working to box culvert |
| CN101532931B (en) * | 2009-04-17 | 2011-07-13 | 中国科学院武汉岩土力学研究所 | Experimental method of simulating dynamic and static load and device thereof |
| CN102854073B (en) * | 2012-09-10 | 2014-09-10 | 湖北工业大学 | Embankment deformation monitoring model experiment device based on displacement tracing technology, and method thereof |
| CN102914632A (en) * | 2012-10-16 | 2013-02-06 | 武汉理工大学 | Multifunctional geotechnical model test chamber |
| CN202928938U (en) * | 2012-12-04 | 2013-05-08 | 中建五局土木工程有限公司 | Pull-out test device for detecting friction characteristics of building reinforcement interface |
| CN104020262B (en) * | 2014-06-23 | 2015-09-30 | 重庆大学 | A kind of landslide is along experimental system in dimensional topography sliding process simulating chamber |
| CN105040754B (en) * | 2015-08-03 | 2017-01-11 | 浙江大学 | Device for testing limited soil mass rigid retaining wall soil pressure model |
| CN205015228U (en) * | 2015-08-26 | 2016-02-03 | 宁波交通工程建设集团有限公司 | Utility tunnel tube coupling bearing capacity test device |
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