CN106284436B - A kind of minery subsidence single pile dead load model test apparatus and test method - Google Patents
A kind of minery subsidence single pile dead load model test apparatus and test method Download PDFInfo
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- CN106284436B CN106284436B CN201610576007.7A CN201610576007A CN106284436B CN 106284436 B CN106284436 B CN 106284436B CN 201610576007 A CN201610576007 A CN 201610576007A CN 106284436 B CN106284436 B CN 106284436B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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Abstract
The invention discloses a kind of minery subsidence single pile dead load model test apparatus and test methods, it includes that a circumferential surface at least front is transparent model slot, slot bottom is as bearing plate, leakage sand hole is equipped on slot bottom, slot bottom is placed below gear orifice plate and is supported with support column for blocking leakage sand hole, gear orifice plate；Sandy soils, polyethylene film and clay layer are Down-Up covered in model slot successively, Model Pile is embedded in clay layer, Model Pile bottom and surrounding are embedded with soil pressure cell, pile body be equipped with foil gauge, mould top is equipped with loading device, and soil pressure cell and foil gauge are connected on the data collecting instrument other than model slot；It is respectively equipped with dial gauge at the top of Model Pile and clay layer.Test method of the present invention can simulate the minery earth's surface deformation process and different curvature change procedure under a variety of geological conditions with a variety of minery earth's surface soil body movement distortion rules of more accurate simulation.
Description
Technical field
The invention belongs to the test method of building field, more particularly to a kind of minery subsidence test method.
Background technology
Due to building the lower rapid development mined, minery earth's surface soil body depression, foundation bearing capacity is caused to generate different journeys
The variation of degree causes huge damage for the building in Affected areas by mining, such as minery railway, bridge basis are all
It can be influenced to different extents.After subterranean coal exploitation, the original mechanical balance state of inside soil body is changed, overlying rock
Different degrees of deformation and failure will be generated；After when underground, seam mining area reaches a certain range, strata movement and deformation
It will expand to earth's surface so that the earth's surface soil body generates horizontal and vertical movement and deformation.The depression of the earth's surface soil body is for mining effect range
Interior buildings pile generates additional internal force and deformation, buildings pile and soil around pile generate downward displacement, may will produce
Pile-side negative friction causes Bearing Behavior of Pile to reduce, and building generates differential settlement, or even cracking with pile foundation, jeopardizes people
Body property safety.
Common research means of the model test as pile foundation Analysis of bearing performance, for minery pile foundation bearer properties
Research has very important engineering significance.However, before making the present invention, being carried to pile foundation during minery subsidence special
Property research method be typically all to simulate minery Surface Subsidence Law by way of jack lifting, this method can not
The settling character of pile foundation, does not have continuity, and pass through lever or liquid during accurate simulation minery subsidence
Pressure jack pair stake top load mode have certain limitation, cannot ensure always pile foundation in moving process vertically by
Lotus.
Applicant had once applied for a kind of transparent soil model experimental rig of minery bearing capacity of pile foundation and test method, application
Numbers 2016100679543, this application is mainly simulated by sand leakage method and is collapsed because coal mining causes to adopt, is adopted to simulate
Area's earth's surface soil body depression process, but it qualitative can only reflect the influence for adopting caused earth's surface soil body movement to pile foundation, it can not
The quantitative accurate a variety of minery earth's surface soil body movement distortion rules of simulation；It sinks moreover, the device can only simulate earth's surface negative cruvature
Drop, can not carry out the simulation of positive camber settlement law；In addition, since transparent soil can only simulate sand, which can not also carry out
Pile foundation settlement characteristic model experiment under a variety of geological conditions.
Therefore, before the present invention not can very accurate simulation minery subsidence during pile foundation sedimentation
The model test apparatus and its test method of characteristic.
Invention content
In order to during overcoming existing subsidence simulation test that can not accurately simulate minery subsidence pile foundation it is heavy
Drop characteristic, the present invention propose a kind of minery subsidence single pile dead load model test apparatus, which, which can realize, does not sympathize with
The simulation of a variety of Ground Settlement Monitorings under condition, including the positive negative cruvature Subsidence law simulation of earth's surface, positive camber to negative cruvature process
In simulation；And depression can be stopped at any time, to observe experimental phenomena；In addition, the invention also provides with minery
The test method of table depression single pile dead load model test apparatus.
The present invention is realized using following technical scheme：
A kind of minery subsidence single pile dead load model test apparatus, the experimental rig include one with support leg
The circumferential surface at least front of model slot, model slot is transparent, and the slot bottom of model slot is equipped with several rule as bearing plate on slot bottom
The leakage sand hole then arranged, slot bottom are placed below gear orifice plate and are supported with several support columns for blocking leakage sand hole, gear orifice plate；
Sandy soils and clay layer are Down-Up covered in model slot successively, are separated with polyethylene film between sandy soils and clay layer；It is glutinous
The Model Pile that circumferential surface is rough surface is embedded in soil layer, the bottom of Model Pile and surrounding are embedded with soil pressure cell, the stake of Model Pile
Body is equipped with foil gauge, and the top of Model Pile is equipped with loading device, and soil pressure cell and foil gauge are connected to the number other than model slot
According on Acquisition Instrument；It is respectively equipped with dial gauge at the top of Model Pile and clay layer, for distinguishing measurement model stake and clay layer
Displacement；
Above-mentioned gear orifice plate is provided with polylith for operating easily, and polylith, which is combined, is placed on slot bottom, keeps off orifice plate
Arrangement amount ensures to make the polyethylene film between sandy soils and clay layer when sand leakage depending on the ground settlement curve of trial test
Meet the shape of curve.Gear orifice plate material should ensure that existing hardness can crimp again, such as household summer sleeping mat material.
For the ease of dismounting, above-mentioned model slot is split type, i.e., is equipped with bearing plate, pressure-bearing a bottomless groove body bottom
Plate is equipped with regularly arranged leakage sand hole.
The bottomless groove body of above-mentioned model slot is preferably made of tempered glass materials.
Above-mentioned loading device is preferably equipped with cross-arm at the top of Model Pile, and cross-arm and Model Pile are connected to by latch
Together, cross-arm is equipped with pallet, and counterweight is placed in pallet.
Above-mentioned model of rough surface stake can bond upper sand grains in pvc pipe circumferential surface and be made.
Above-mentioned model slot internal face is sliding surface, and sliding surface is formed in model slot internal face coating lubricating oil.
The test method of above-mentioned minery subsidence single pile dead load model test apparatus is as follows：
The first step describes the ground settlement curve of trial test on model slot front；
Second step makes Model Pile, it is desirable that 1/10th of a diameter of model well width of pile body；Stake top height is more than model
Groove height, Model Pile circumferential surface are rough surface；
Third walks, and pastes foil gauge on the pile body of Model Pile, makes sliding to model slot internal face coating lubricating oil
Dynamic face；
4th step, according to earth's surface subsidence curve determine gear orifice plate quantity, by ground settlement curve according to paddy peak and valley bottom into
Row draws section, it is desirable that adjacent paddy peak and valley bottom corresponds to one piece of gear orifice plate, and then arranged keeps off orifice plate, support on device pedestal
Column is supported gear orifice plate, is allowed to be close to bearing plate, polylith gear orifice plate is grouped together into an entirety；When model slot is
When split type, bearing plate placed on support column first, then bottomless groove body is placed on bearing plate, bearing plate is made to become model
The slot bottom of slot is subsequently placed with gear orifice plate and support column；
5th step is laid with sandy soils and clay layer to model slot, polyethylene film is used between sandy soils and clay layer successively
It separates；It is required that sandy soils, which are laid with height, is more than the ground settlement height of curve for describing trial test；When being laid with clay layer it is pre-buried on
Model Pile, the bottom of Model Pile and the pre-buried upper soil pressure cell of surrounding；
6th step after landfill is native, stands 3-5 angel's soil solidifyings；
After soil consolidation is stablized, loading device is installed at the top of Model Pile for 7th step；By soil pressure cell and foil gauge
It is connected on the data collecting instrument other than model slot；At the top of Model Pile and clay layer surface installs dial gauge, for measuring mould
The displacement of type stake and clay layer；
8th step carries out hierarchical loading to Model Pile, and every grade of load 4-6kg is loaded, midfeather is half small in four times altogether
When；Data collecting instrument record pile strain and soil around pile pressure in loading procedure, the stake of dial gauge display model and clay surface layer
Displacement；
9th step after load is completed, waits for that stake soil stablizes (pile strain and soil around pile pressure i.e. on data collecting instrument relatively
Fluctuation is smaller, and percentage meter reading is constant) after, progress earth's surface is adopted dynamic model and is intended, and sand leakage sedimentation is carried out according to settlement observation curve：It removes first
Support column below gear orifice plate corresponding from first segment subsidence curve, extraction gear orifice plate exposes leakage sand hole and carries out sand leakage, in sand leakage
In the process, the sand leakage speed for paying attention to difference makes the polyethylene film between sandy soils and clay layer reach and describes trial test
Ground settlement curve location；Data collecting instrument record pile strain and soil around pile pressure, dial gauge display model in infall process
The displacement of stake and clay layer；
Tenth step carries out step according to the 9th step and continues lower one of the settlement observation curve of ground settlement simulation, until institute
There is every curve simulation to complete；It is divided into one hour between sedimentation every time；
11st step is handled collected data using origin softwares.
Further, when second step makes the Model Pile of rough surface, upper sand grains can be bonded in pvc pipe circumferential surface and be made.
Further, it in the 8th step carries out hierarchical loading to Model Pile, is loaded using counterweight.
Further, it when the 5th step is laid with sandy soils into model slot, is tiled using conventional " sand rain method ".
Further, when the 5th step is laid with clay layer into model slot, soil body homogenieity is controlled using dry density method.
It is an advantage of the invention that：
Minery subsidence single pile dead load model test apparatus proposed by the present invention and test method can be more smart
The a variety of minery earth's surface soil body movement distortion rules of true simulation can simulate the minery earth's surface deformation under a variety of geological conditions
Process and different curvature change procedure include the simulation of the positive and negative Curvature varying of earth's surface, the mould that positive camber to negative cruvature changes
It is quasi-；The movement and deformation situation of the soil body during adopting subsidence can be observed, it can be with the position of monitoring model stake and pile peripheral earth
Move situation of change；The load mode of the model equipment is loaded using counterweight, it is ensured that Model Pile during soil body depression
Vertical constant pressure load；Plant bulk is small, and experiment time is short, improves scientific research efficiency.And in the above advantage, common single pile
Dead load model test is difficult to the simulation for carrying out adopting surface movement and deformation rule, adopts dynamic model and intends not burying in the soil layer that trial assembly is set
If Model Pile.
The specific implementation mode of the present invention is described in detail below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is experimental rig schematic diagram of the present invention；
Fig. 2 is Model Pile structural schematic diagram；
Fig. 3 is loading device schematic diagram；
Fig. 4 is " sand rain method " back-up sand schematic diagram.
In figure, 1- model slots, 2- support columns, 3- bearing plates, 4- sandy soils, 5- polyethylene films, 6- loading devices, 7- soil
Pressure cell, 8- foil gauges, 9- dial gauges, 10- Model Piles, 11- keep off orifice plate, 12- leakage sand holes, 13- funnels, 14- ground settlement songs
Line, 15- conducting wires, 16- sand grains, 17- clay layers, the bottomless groove bodies of 18-, 19- counterweights, 20-PVC pipes, 21- latches, 22- support legs.
Specific implementation mode
As shown in Figure 1, a kind of minery subsidence single pile dead load model test apparatus, which includes one
The circumferential surface at least front of model slot 1, model slot 1 is transparent, and the slot bottom of model slot 1 is equipped with several regularly arranged leakage sand holes
12, leakage sand hole 12 is placed below several gear orifice plates 11 and is carried out with several support columns 2 for blocking leakage sand hole 12, every piece of gear orifice plate 11
Support；Sandy soils 4 and clay layer 17 are Down-Up covered in model slot 1 successively, polyethylene is used between sandy soils 4 and clay layer 17
Film 5 separates；Model Pile 10 is embedded in clay layer 17, the bottom of Model Pile 10 and surrounding are embedded with soil pressure cell 7, Model Pile
10 pile body is equipped with foil gauge 8, and the top of Model Pile 10 is equipped with loading device 6, and soil pressure cell 7 and foil gauge 8 pass through conducting wire
15 are connected on the data collecting instrument other than model slot 1；It is respectively equipped with dial gauge 9 at the top of Model Pile 10 and clay layer 17,
Displacement for distinguishing measurement model stake 10 and clay layer 17；
Above-mentioned model slot 1 is split type, i.e., is equipped with bearing plate 3 18 bottom of bottomless groove body, bearing plate 3 is equipped with
Regularly arranged leakage sand hole 12.
The bottomless groove body 18 of above-mentioned model slot is made of tempered glass materials.
Above-mentioned loading device 6 is as shown in figure 3, be to be equipped with cross-arm at 10 top of Model Pile, cross-arm is equipped with counterweight 19, adds
Carry set 6 and Model Pile 10 linked together by insert 21.
Above-mentioned 10 circumferential surface of Model Pile is rough surface；Model Pile 10 in 20 surface mount of pvc pipe as shown in Fig. 2, can strain
Then piece 8 bonds upper sand grains 16 in its circumferential surface and is made.
Above-mentioned 1 internal face of model slot is sliding surface, and sliding surface is to be coated with lubricating oil in 1 internal face of model slot to be formed.
Above-mentioned gear orifice plate 11 be rollable material, keep off orifice plate 11 arrangement amount according to the ground settlement curve of trial test and
It is fixed, ensure the shape for making the film layer between sandy soils and clay layer meet curve when sand leakage.
The test method of above-mentioned minery subsidence single pile dead load model test apparatus is as follows：
The first step describes the ground settlement curve 14 of trial test on 1 front of model slot；
Second step makes Model Pile 10；It is required that 1/10th of a diameter of 1 width of model slot of pile body, stake top height should
More than 1 height of model slot, pile body surface is rough surface；
Third walks, and foil gauge 8 is pasted on the pile body of Model Pile 10；To 1 internal face coating lubricating oil of model slot be allowed to for
Sliding surface；
4th step determines gear 11 quantity of orifice plate, by ground settlement curve 14 according to Gu Fenghe according to earth's surface subsidence curve 14
The lowest point carries out drawing section, it is desirable that adjacent paddy peak and valley bottom corresponds to one piece of gear orifice plate 11, then the arrangement gear hole on 1 pedestal of model slot
Plate 11 is supported gear orifice plate 11 by support column 2, is allowed to be close to bearing plate 3, polylith gear orifice plate 11 is grouped together into
One entirety；
It is required that the often row leakage sand hole 12 of 1 bottom of model slot will have gear orifice plate 11 to block, every piece of gear orifice plate 11 will have two
Support column 2 is arranged to support；
When model slot 1 is split type, bearing plate 3 is placed in the pre-set support leg of pedestal 22 first, then will
18 body of no kerve is placed on bearing plate 3, and bearing plate 3 is made to become the slot bottom of model slot 1, and gear is then placed below bearing plate 3
Orifice plate 11 and support column 2；
5th step is laid with sandy soils 4 and clay layer 17 into model slot 1 successively, with poly- between sandy soils 4 and clay layer 17
Vinyl film 5 separates；It is required that sandy soils 4, which are laid with height, is more than 14 height of ground settlement curve for describing trial test；It is glutinous being laid with
Pre-buried upper Model Pile 10 when soil layer 17, the bottom of Model Pile 10 and the pre-buried upper soil pressure cell of surrounding 7；
6th step after landfill is native, stands 3-5 angel's soil solidifyings；
After 17 stabilization by consolidation of clay layer, loading device 6 is installed at the top of Model Pile 10 for 7th step；By soil pressure cell 7
It is connected on the data collecting instrument other than model slot 1 with conducting wire 15 with foil gauge 8；On 10 top of Model Pile and 17 surface of clay layer
Dial gauge 9 is installed, the displacement of measurement model stake 10 and clay layer 17 is used for；
8th step carries out hierarchical loading to Model Pile 10, and every grade of load 4-6kg is loaded, half of midfeather in four times altogether
Hour；The displacement of data collecting instrument record load data and Model Pile 10 and clay layer 17 in loading procedure：
9th step, after load is completed, after stake soil is stablized relatively, progress earth's surface is adopted dynamic model and is intended, according to ground settlement song
Line 14 carries out sand leakage sedimentation：The support column 2 below the corresponding gear orifice plate of first segment ground settlement curve is withdrawn first, extracts the section out
The corresponding gear orifice plate 11 of curve exposes the progress of leakage sand hole 12 sand leakage and pays attention to the sand leakage speed of difference during sand leakage, make
Reach the ground settlement curve location for describing trial test between sandy soils 4 and clay layer 5 with polyethylene film 5.In practical operation
In the process, the paddy peak leakage husky time of curve is short, and the lowest point leakage husky time is long, so, for the ease of operation, when draining to paddy peak position
When, the gear curling of orifice plate 11 is stretched into gear on the corresponding sand losing opening in paddy peak, then gradually expansion obstructs sand from Gu Feng to the lowest point
Continue to leak out, first segment ground settlement curve simulation is completed；Data collecting instrument record pile strain and soil around pile in infall process
Pressure, the displacement of dial gauge 9 display model stake 10 and clay layer 17；
Tenth step continues ground settlement according to the 9th step and simulates next section of settlement observation curve, until all earth's surfaces are heavy
The simulation of curve 14 is dropped to complete；It is divided into one hour between sedimentation every time；
11st step is handled the data of acquisition using origin softwares.
Further, when second step makes the Model Pile 10 of rough surface, upper sand grains 16 can be bonded in 20 circumferential surface of pvc pipe and made
At.
Further, it in the 8th step carries out hierarchical loading to Model Pile 10, is loaded using counterweight 19.
Further, when the 5th step is laid with sandy soils 4 to model slot 1, using conventional " sand rain method ", as shown in figure 4, with
Funnel 13 tiles.
Further, clay is filled using dry density method when the 5th step is laid with clay layer 17 to model slot 1.
Claims (8)
1. a kind of minery subsidence single pile dead load model test method, which is characterized in that the examination used in the test method
Experiment device structure is：Include a model slot with support leg, the circumferential surface at least front of model slot is transparent, the slot of model slot
Bottom is equipped with several regularly arranged leakage sand holes as bearing plate on slot bottom, and gear orifice plate is placed below for blocking leakage in slot bottom
Sand hole, gear orifice plate are supported with several support columns；Sandy soils and clay layer, sandy soils are Down-Up covered in model slot successively
It is separated with polyethylene film between clay layer；The Model Pile that circumferential surface is rough surface, the bottom of Model Pile are embedded in clay layer
It is embedded with soil pressure cell with surrounding, the pile body of Model Pile is equipped with foil gauge, and the top of Model Pile is equipped with loading device, soil pressure
Box and foil gauge are connected on the data collecting instrument other than model slot；It is respectively equipped with percentage at the top of Model Pile and clay layer
Table, the displacement for distinguishing measurement model stake and clay layer；
Test method is：
The first step describes the ground settlement curve of trial test on model slot front；
Second step makes Model Pile, it is desirable that 1/10th of a diameter of model well width of pile body；Stake top height is more than that model slot is high
Degree, Model Pile circumferential surface are rough surface；
Third walks, and pastes foil gauge on the pile body of Model Pile, sliding surface is made to model slot internal face coating lubricating oil；
4th step determines gear orifice plate quantity according to earth's surface subsidence curve, ground settlement curve is drawn according to paddy peak and valley bottom
Section, it is desirable that adjacent paddy peak and valley bottom corresponds to one piece of gear orifice plate, and then arranged keeps off orifice plate, support column on model slot bottom seat
Gear orifice plate is supported, is allowed to be close to bearing plate, polylith gear orifice plate is grouped together into an entirety；When model slot is point
When body formula, bearing plate is placed on support column first, then bottomless groove body is placed on bearing plate, bearing plate is made to become model slot
Slot bottom, be subsequently placed with gear orifice plate and support column；
5th step is laid with sandy soils and clay layer to model slot, is separated with polyethylene film between sandy soils and clay layer successively；
It is required that sandy soils, which are laid with height, is more than the ground settlement height of curve for describing trial test；The pre-buried upper model when being laid with clay layer
Stake, the bottom of Model Pile and the pre-buried upper soil pressure cell of surrounding；
6th step after landfill is native, stands 3-5 angel's soil solidifyings；
After soil consolidation is stablized, loading device is installed at the top of Model Pile for 7th step；Soil pressure cell is connected with foil gauge
On the data collecting instrument other than model slot；At the top of Model Pile and clay layer surface installs dial gauge, is used for measurement model stake
With the displacement of clay layer；
8th step carries out hierarchical loading to Model Pile, and every grade of load 4-6kg is loaded, midfeather half an hour in four times altogether；
Data collecting instrument record pile strain and soil around pile pressure, the stake of dial gauge display model and the displacement on clay surface layer in loading procedure
Amount；
9th step, after load is completed, after stake soil is stablized relatively, progress earth's surface is adopted dynamic model and is intended, and is carried out according to settlement observation curve
Sand leakage settles：The support column below the corresponding gear orifice plate of first segment subsidence curve is withdrawn first, and extraction gear orifice plate exposes leakage sand hole
Sand leakage is carried out to pay attention to the sand leakage speed of difference during sand leakage, the polyethylene film between sandy soils and clay layer is made to reach
To the ground settlement curve location for describing trial test；Data collecting instrument record pile strain and soil around pile pressure in infall process,
The displacement of the stake of dial gauge display model and clay layer；
Tenth step continues ground settlement according to the 9th step and simulates lower one of settlement observation curve, until all curve simulations
It completes；It is divided into one hour between sedimentation every time；
11st step is handled collected data using origin softwares.
2. minery subsidence single pile dead load model test method as described in claim 1, which is characterized in that described
Gear orifice plate is provided with polylith, and polylith, which is combined, is placed on slot bottom, keeps off the arrangement amount of orifice plate according to the ground settlement of trial test
Depending on curve, ensure the shape for making the polyethylene film between sandy soils and clay layer meet curve when sand leakage；Keep off the material of orifice plate
Material should ensure that existing hardness can crimp again.
3. minery subsidence single pile dead load model test method as described in claim 1, which is characterized in that described
Model slot is split type, i.e., is equipped with bearing plate a bottomless groove body bottom, bearing plate is equipped with regularly arranged leakage sand hole.
4. minery subsidence single pile dead load model test method as claimed in claim 3, which is characterized in that model slot
Bottomless groove body be made of tempered glass materials.
5. minery subsidence single pile dead load model test method as described in claim 1, which is characterized in that described
Loading device is that cross-arm is equipped at the top of Model Pile, and cross-arm and Model Pile are linked together by latch, and cross-arm is equipped with support
Disk, counterweight are placed in pallet.
6. minery subsidence single pile dead load model test method as described in claim 1, which is characterized in that described
Model of rough surface stake is made of to bond upper sand grains in pvc pipe circumferential surface.
7. minery subsidence single pile dead load model test method as described in claim 1, which is characterized in that described
Model slot internal face is sliding surface, and sliding surface is formed in model slot internal face coating lubricating oil.
8. minery subsidence single pile dead load model test method as described in claim 1, which is characterized in that the 8th
Step carries out in hierarchical loading Model Pile, is loaded using counterweight.
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| CN2016105031236 | 2016-06-28 | ||
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| CN201610576007.7A Active CN106284436B (en) | 2016-06-28 | 2016-07-21 | A kind of minery subsidence single pile dead load model test apparatus and test method |
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| CN205875234U (en) * | 2016-06-28 | 2017-01-11 | 河南理工大学 | Adopt livestock farm subsidence single pile dead load model test device |
| CN106948386B (en) * | 2017-04-10 | 2022-10-28 | 中国建筑西南勘察设计研究院有限公司 | Soil filling side frictional resistance model test device and test method thereof |
| CN107121338A (en) * | 2017-06-21 | 2017-09-01 | 中冶沈勘工程技术有限公司 | A kind of variable cross-section CFG pile composite foundation static tests self-balancing combination unit and method |
| CN108398330B (en) * | 2018-01-30 | 2020-09-01 | 山东科技大学 | Dynamic load stability test system and test method for ore pillar supporting system |
| CN111174952B (en) * | 2020-01-17 | 2021-10-01 | 安徽理工大学 | Mining area mining subsidence rule prediction method |
| 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 |
| CN112344906A (en) * | 2020-11-30 | 2021-02-09 | 山东大学 | Unstable-subsidence coal mining subsidence area ship pool settlement deformation model test device and method |
| CN112881166B (en) * | 2021-01-29 | 2022-07-05 | 山东大学 | Device and method for testing stability of foundation in mining overall process and mining subsidence area |
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| 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 |
| CN102011415A (en) * | 2010-10-26 | 2011-04-13 | 珠海市建设工程质量监督检测站 | Method and device for detecting strain/stress of pile body by prestress pipe file field static load test |
| CN102877492A (en) * | 2012-10-31 | 2013-01-16 | 东南大学 | Negative frictional resistance pile soil displacement measuring device |
| KR101495278B1 (en) * | 2014-02-05 | 2015-03-02 | (주) 금강지오테크 | Vertical load test equipment and methods building extension |
| CN104515734B (en) * | 2014-12-16 | 2017-01-11 | 广西科技大学 | Visualization simulator and simulation method for tubular pile vertical static test |
| CN105696632B (en) * | 2016-02-01 | 2017-10-13 | 河南理工大学 | A kind of transparent soil model experimental rig of minery bearing capacity of pile foundation and test method |
| CN205875234U (en) * | 2016-06-28 | 2017-01-11 | 河南理工大学 | Adopt livestock farm subsidence single pile dead load model test device |
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