CN108824501A - Simulate the visual test device and method of underwater open caisson construction land movement - Google Patents
Simulate the visual test device and method of underwater open caisson construction land movement Download PDFInfo
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- CN108824501A CN108824501A CN201810667497.0A CN201810667497A CN108824501A CN 108824501 A CN108824501 A CN 108824501A CN 201810667497 A CN201810667497 A CN 201810667497A CN 108824501 A CN108824501 A CN 108824501A
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- 238000010276 construction Methods 0.000 title claims abstract description 35
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000000007 visual effect Effects 0.000 title claims abstract description 20
- 230000033001 locomotion Effects 0.000 title abstract description 8
- 238000004088 simulation Methods 0.000 claims abstract description 44
- 239000002689 soil Substances 0.000 claims abstract description 44
- 238000006073 displacement reaction Methods 0.000 claims abstract description 18
- 238000013480 data collection Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 239000012530 fluid Substances 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 6
- IIYFAKIEWZDVMP-UHFFFAOYSA-N tridecane Chemical compound CCCCCCCCCCCCC IIYFAKIEWZDVMP-UHFFFAOYSA-N 0.000 claims description 6
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 5
- 229940094933 n-dodecane Drugs 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000011179 visual inspection Methods 0.000 abstract description 4
- 239000012780 transparent material Substances 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000011549 displacement method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The present invention discloses the visual test device and method for simulating underwater open caisson construction land movement, which includes seepage force application system, Simulated System, data collection system, simulation excavating gear；The present invention merges transparent material technology and digital image processing techniques and by it with into the indoor simulation of underwater open caisson construction, realizes the visual inspection of soil displacement field and seepage field in underwater open caisson construction.
Description
Technical field
The invention belongs to engineering test technical field more particularly to a kind of simulate the visual of underwater open caisson construction land movement
Change experimental rig and test method.
Background technique
Open caisson be it is a kind of remove native stone in well using manually or mechanically method, by self weight and various heavy measure is helped to make
Pit shaft sink to down toward designed elevation, it is fixed in the earth formation after, complete around the underground structure for building concrete sealing bottom formation or
The construction method of structures.
In decades, the completion of a large amount of Longspan Bridges in China, pushes the research of well foundation and the progress of construction experience.
Currently, important form of the well foundation as deep foundation, in a large amount of harbours, bridge, mine, hydraulic and hydroelectric engineering and Large Underground
It has obtained successfully using extensively in building foundation.More and more, increasing open caisson undoubtedly by Open caisson construction technology this
A comprehensive problem has been placed in face of civil engineers.The key technology of open caisson construction is its steady sinking of guarantee, wherein
The change procedure for accurately holding soil displacement field in sinking watching is the major control factors of well sinking, seeks soil displacement field
Distribution form be Sinking Well Design important content.But the requirement of drop shaft sinking construction studies it mostly from engineering practice
Deep not enough, this needs the more energy of researcher investment clearly to explain its mechanism of action, with preferably
Instruct engineering practice.Indoor model test is exactly a kind of extraordinary method.
However there is no carry out simulation and the visual testing equipment of whole process to underwater open caisson construction at present.
Summary of the invention
In view of this, the present invention provides a kind of visual test device for simulating underwater open caisson construction land movement and side
Method solves underwater open caisson construction soil displacement field and the sightless problem of seepage field, realizes under the underwater open caisson construction of simulation
The visual inspection of soil displacement field and seepage field.
In order to solve the above technical problems, the technical scheme is that being displaced using a kind of underwater open caisson construction soil of simulation
Visual test device, including seepage force application system, Simulated System, data collection system, simulation excavating gear；
The seepage force application system include the support rod being vertically arranged, can be slided up and down along support rod for contain seep
The water feeding tank of transparent liquid further includes the driving device for driving water feeding tank to move up and down；
The Simulated System includes transparent model casing, and transparent soil, the transparent soil are loaded in the model casing
In be inserted with the simulation open caisson of tubular vertically；The transparent soil is located at simulation open caisson surrounding and is inserted with several engineering piles, the engineering pile
There are support board and counterweight in upper top；
The water feeding tank is connect by water supplying pipe with model casing.
As an improvement the driving device includes the handle that support bar top is arranged in；The post upper support
There is top plate, is provided with screw hole on the top plate；The screw thread with screw hole cooperation is provided on the handle；The handle and water feeding tank connect
It connects.
It further include the orifice plate being arranged in model box inner wall, the water supplying pipe is sensible as a kind of further improvement
Orifice plate.Penetrating fluid dispersed placement is simulated impact of the fluid to soil under full-scale condition by orifice plate.
As another further improvement, the simulation open caisson lower end is provided with interior tough angle, simulates truth, have
Conducive to simulation well sinking.
As an improvement the transparent soil is molten by tekite sand particle and the mixing of n-dodecane and ten No. five white oils
Liquid is prepared.
As an improvement the transparent soil is flooded using penetrating fluid, the penetrating fluid has equally matches with transparent soil
The n-dodecane of ratio and ten No. five white oils, and configured under the conditions of same temperature and humidity.
As an improvement the simulation open caisson is by plasticity after glass sand, atoleine and n-tridecane uniform stirring
It forms.
As an improvement the data collection system includes positioned at the laser generator of model casing side and positioned at saturating
CCD camera below camera-lucida, the CCD camera are connect with computer.
As an improvement the simulation excavating gear is mechanical gripper.
The present invention also provides a kind of Visualizations for simulate using above-mentioned apparatus underwater open caisson construction soil displacement
Method includes the following steps：
1. simulation open caisson is placed on transparent soil, and several engineering piles are successively squeezed into around simulation open caisson；And it will carry
Object plate is placed on engineering pile top；
2. injecting penetrating fluid to water feeding tank；And water feeding tank is promoted into the height to setting, so that the penetrating fluid in water feeding tank
Transparent soil is impacted；And counterweight is loaded on support board；
3. the transparent soil in simulation open caisson is excavated using simulation excavating gear, until well sinking to predeterminated position, is used in combination
Data collection system records the process；
4. being analyzed using image document of the computer software to acquisition.
The invention has the beneficial effects that：
1. present invention fusion transparent material technology and digital image processing techniques simultaneously use it to underwater open caisson construction
In indoor simulation, the visual inspection of soil displacement field and seepage field in underwater open caisson construction is realized；
2. the present invention overcomes only consider lacking for single influence factor in traditional soil excavation experimental rig and test method
Point, realizes the simulation to open caisson digging process under seepage liquefaction, more meets Practical Project requirement；
3. the seepage force application system in the present invention can realize the fast of test head lifting by the speed of rotating handle
It is slow, it can be achieved that simulation to open caisson construction under the conditions of different infiltration energies.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the top view of Simulated System in the present invention.
It is marked in figure：1 is handle；2 be wirerope；3 be water feeding tank；4 be support rod；5 be top plate；6 be sliding slot；7 be stream
Meter；8 be bottom plate；9 be water supplying pipe；10 be valve；11 be orifice plate；12 be transparent soil；13 be CCD camera；14 be computer；
15 be laser generator；16 be penetrating fluid；17 be simulation open caisson；18 be support board；19 be counterweight；20 be engineering pile；21 be mould
Molding box；22 be mechanical gripper.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, With reference to embodiment
The present invention is described in further detail.
As shown in Figure 1 and Figure 2, the present invention provides a kind of visual test device for simulating underwater open caisson construction soil displacement,
Including seepage force application system, Simulated System, data collection system, simulation four big parts of excavating gear.
The seepage force application system include the support rod 4 being vertically arranged, can be slided up and down along support rod 4 for containing
The water feeding tank 9 of penetrating fluid 16 further includes the driving device for driving water feeding tank 9 to move up and down；Driving device includes that setting exists
The handle 1 at 4 top of support rod, handle 1 can use the production of Z shaped steel.4 upper end of the support rod support has top plate 5, the top
Screw hole is provided on plate 5；The screw thread with screw hole cooperation is provided on the handle 1；The handle 1 utilizes wirerope 2 and water feeding tank 3
Connection.For integrally-built fastness, the support rod 4 is arranged to four, and bottom plate 8 is arranged below support rod 4.Separately
It is slided up and down outside for the ease of water feeding tank 3, sliding slot can be set on the inside of support rod 4.
The Simulated System includes transparent model casing 21, the organic glass that model casing 21 is required by meeting translucency
It is made, having a size of 800 (length) × 400 (width) × 300 (height) (units：Mm), with a thickness of 10mm, bottom and optical platform are solid
Fixed connection.It is loaded with transparent native 12 in the model casing 21, is inserted with the simulation open caisson 17 of tubular in described transparent native 12 vertically；Institute
It states transparent native 12 to flood using penetrating fluid 16, is higher by transparent native 12 top surface 50mm.Described transparent native 12 are located at simulation open caisson 17
Surrounding is inserted with several engineering piles 20, and there are support board 18 and counterweight 19 in top on the engineering pile 20.Engineering pile 20 is diameter 10mm's
Stainless steel rod iron, long 200mm.
According to this test transparent native 12 physico-mechanical properties (including moisture content, void ratio, angle of friction, cohesive strength etc.)
Design matching and comparing for transparent native 12 each constituent；Transparent native 12 preparation method employed in this example is by n-dodecane
It (is set as in this example under ten No. five white oils at a certain temperature (being set as 24 DEG C in this example), certain humidity
30%) mixed solution, is formed according to certain mass ratio (being set as 1: 4 in this example), and is stirred with suitable quartz sand mixing
It mixes until homogeneous transparent is prepared.
According to physico-mechanical properties (including density, uniaxial compressive strength, the springform of this test institute simulation concrete open caisson
Amount etc.) design simulation open caisson 17 each constituent of material match and compare；The preparation method of transparent material employed in this example is
By (this under glass sand, atoleine and n-tridecane at a certain temperature (being set as 24 DEG C in this example), certain humidity
It stirs, vacuumize and shakes after being set as 30%) (being set as 1.295: 1: 0.85 in this example) mixing by a certain percentage in example
Smash to it is transparent, enter mould, demoulding and be made；The size that open caisson 17 is simulated in this example is the circle of outer diameter 110mm, internal diameter 100mm
Cylinder, bottom are equipped with 45 ° of tough angles in the diagonal.
Seepage force application system is installed according to test requirements document, injection has identical refraction with transparent native 12 in water feeding tank 3
The penetrating fluid 16 of rate, in this example using with transparent native 12 in transparent liquid (24 are set as in this example at the same temperature
DEG C), (be set as 30% in this example) under same humidity and match and according to identical than made of (being set as 1: 4 in this example) positive ten
Dioxane and ten No. five white oil mixed solutions.
The water feeding tank 3 is connect by water supplying pipe 9 with model casing 21.It further include being arranged on 21 inner sidewall of model casing
Orifice plate 11, the sensible orifice plate 11 of the water supplying pipe 9.Flowmeter 7 and valve 10 are provided on water supplying pipe 9 for measuring and controlling out
It closes.
Data collection system includes the laser generator 15 positioned at 21 side of model casing and the CCD below glass box
Camera 13, the CCD camera 13 are connect with computer 14.Laser generator 15 employed in this example is semiconductor chip light
Source using intracavity He-Ne laser, and is furnished with converter,linear, can convert linear light sorurce for point light source.Open laser hair
Raw device 15, and its specific location is adjusted, make transparent native 12 in its alignment transparent mould molding box 21, forms bright speckle field；This
Laser generator 15 in example is vertical with the alien invasion of model casing 21 at a distance of 350mm.CCD camera employed in this example
13 be German Basler product (scA1600-14fm)；CCD camera 13 is opened, and adjusts the height and angle of its bracket, so that
The alien invasion of the camera lens perpendicular alignmnet model casing 21 of CCD camera 13 guarantees that its visual range can be comprising entire transparent native 12；
CCD camera 13 is connected with computer 14, and setting CCD camera 13 with 2 width/second frequency collection image and is sent to computer 14.
The simulation excavating gear is mechanical gripper 22.Mechanical gripper 22 used in this example is accurate machine in Changzhou day
Single column truss robot (type HL3) of tool Co., Ltd production, monodactyle weight capacity are resetting within 3Kg
Precision ± 0.04mm；Z axis control mode is SERVO CONTROL, and movement speed 140M/min, driving method is rack-and-pinion；X-axis control
Mode processed is SERVO CONTROL, and movement speed 180M/min, driving method is synchronous belt.
The present invention also provides a kind of Visualizations for simulate using above-mentioned apparatus underwater open caisson construction soil displacement
Method, the method are the visual process of underwater open caisson construction land movement under the premise of water feeding tank 3 is constant, including following step
Suddenly：
1. simulation open caisson 17 is placed on transparent native 12, and simulation open caisson 17 weeks is successively squeezed by several engineerings 20
It encloses；And support board 17 is placed on 20 top of engineering pile；8 engineering piles 20 are loaded with 2 × 2 distribution mode by pile sinking
Instrument successively, is slowly squeezed into respectively in transparent native the 12 of simulation 17 the right and left of open caisson, and pile driving process wants strict control pile sinking to add
The speed of instrument is carried, guarantees to prevent the excessive situation of pile position deviation in the vertical injection of engineering pile 20 transparent native 12；It is needed before use
It will be dried after the wet towel wiped clean of 18 outer surface of engineering pile；Support board 18 is placed on the engineering pile 20；
2. injecting penetrating fluid 16 to water feeding tank 3.Water feeding tank 3 is promoted into the height to setting, so that the infiltration in water feeding tank 3
Liquid 16 impacts transparent soil；And counterweight 19 is loaded on support board 18；Water feeding tank 3 is adjusted to certain altitude by handle 1,
It keeps 3 position of water feeding tank constant during test, valve 10 and flowmeter 7 is opened, so that the penetrating fluid 16 in water feeding tank 3 is successively
Transparent native 12 are impacted by water supplying pipe 9, orifice plate 11；The counterweight 19 of certain mass is placed in support board 18；Matching in this example
19 are weighed as 5Kg.
3. the transparent soil in simulation open caisson is excavated using simulation excavating gear, until simulation open caisson 17 sinks down into default position
It sets, and records the process with data collection system.After stopping test, dismounts and clean after instrument in inserter case.
4. analyzing using digital imaging processing software PTV photo obtained, underwater open caisson construction process is obtained
The change procedure of middle soil displacement field and seepage field.
The simulation of underwater open caisson construction process and visual inspection under the premise of changing for water feeding tank 3, can be in above-mentioned experiment
2 embodiment is changed the step on the basis of method.By handle 1 adjust water feeding tank to certain altitude after with 6 turns/min up time
Needle handle 1, making water feeding tank 3, rates reduce during the test etc.；1 opens valve 10 and flowmeter 7, so that in water feeding tank 3
Penetrating fluid passes sequentially through water supplying pipe 9, orifice plate 11 impacts transparent native 12；The counterweight 19 of certain mass is placed in load plate 18；This
Counterweight 19 in example is 5Kg.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (10)
1. a kind of visual test device for simulating underwater open caisson construction soil displacement, it is characterised in that：Apply including seepage force
System, Simulated System, data collection system, simulation excavating gear；
The seepage force application system include the support rod being vertically arranged, can be slided up and down along support rod for containing penetrating fluid
Water feeding tank, further include for drive water feeding tank move up and down driving device；
The Simulated System includes transparent model casing, and transparent soil is loaded in the model casing, is erected in the transparent soil
Straight cutting has the simulation open caisson of tubular；The transparent soil is located at simulation open caisson surrounding and is inserted with several engineering piles, pushes up on the engineering pile
There are support board and counterweight；
The water feeding tank is connect by water supplying pipe with model casing.
2. a kind of visual test device for simulating underwater open caisson construction soil displacement according to claim 1, feature
It is：The driving device includes the handle that support bar top is arranged in；The post upper, which supports, top plate, on the top plate
It is provided with screw hole；The screw thread with screw hole cooperation is provided on the handle；The handle is connect with water feeding tank.
3. a kind of visual test device for simulating underwater open caisson construction soil displacement according to claim 1, feature
It is：It further include the orifice plate being arranged in model box inner wall, the sensible orifice plate of water supplying pipe.
4. a kind of visual test device for simulating underwater open caisson construction soil displacement according to claim 1, feature
It is：The simulation open caisson lower end is provided with interior tough angle.
5. a kind of visual test device for simulating underwater open caisson construction soil displacement according to claim 1, feature
It is：The transparent soil is prepared by tekite sand particle and the mixed solution of n-dodecane and ten No. five white oils.
6. a kind of visual test device for simulating underwater open caisson construction soil displacement according to claim 5, feature
It is：The transparent soil is flooded using penetrating fluid, and the penetrating fluid has and the n-dodecane and ten that equally matches in transparent soil
No. five white oils, and configured under the conditions of same temperature and humidity.
7. a kind of visual test device for simulating underwater open caisson construction soil displacement according to claim 1, feature
It is：The simulation open caisson is to form plasticity after glass sand, atoleine and n-tridecane uniform stirring.
8. a kind of visual test device for simulating underwater open caisson construction soil displacement according to claim 1, feature
It is：The data collection system includes the laser generator positioned at model casing side and the CCD phase below glass box
Machine, the CCD camera are connect with computer.
9. a kind of visual test device for simulating underwater open caisson construction soil displacement according to claim 1, feature
It is：The simulation excavating gear is mechanical gripper.
What 10. the visual test device of the underwater open caisson construction soil displacement of simulation according to claim 1 was tested
Method, it is characterised in that have follow steps：
1. simulation open caisson is placed on transparent soil, and several engineering piles are successively squeezed into around simulation open caisson；And by support board
It is placed on engineering pile top；
2. injecting penetrating fluid to water feeding tank；And water feeding tank is promoted into the height to setting, so that the penetrating fluid in water feeding tank is to saturating
Bright soil is impacted；And counterweight is loaded on support board；
3. excavating the transparent soil in simulation open caisson using simulation excavating gear, up to well sinking to predeterminated position, and data are used
Acquisition system records the process；
4. being analyzed using image document of the computer software to acquisition.
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| CN201810667497.0A CN108824501B (en) | 2018-06-26 | 2018-06-26 | Visual test device and method for simulating displacement of soil body in underwater open caisson construction |
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| CN201810667497.0A CN108824501B (en) | 2018-06-26 | 2018-06-26 | Visual test device and method for simulating displacement of soil body in underwater open caisson construction |
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| CN109537648A (en) * | 2018-12-13 | 2019-03-29 | 西南交通大学 | A kind of simulation open caisson does not drain the experimental provision of suck sediment subsidence |
| CN109695262A (en) * | 2019-01-20 | 2019-04-30 | 西南交通大学 | A kind of prominent heavy experimental rig of simulation open caisson generation founding |
| CN111413487A (en) * | 2020-04-23 | 2020-07-14 | 大连理工大学 | Offshore and offshore artificial island settlement deformation test device and test method |
| CN116043930A (en) * | 2023-02-21 | 2023-05-02 | 重庆大学 | Complex stratum high-pressure water jet pile-forming simulation test device and test method |
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| CN108824501B (en) | 2021-03-30 |
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