CN109841138A - A kind of test model and method of the ground foundation simulation sedimentation with Distribution of Magnetic Field - Google Patents
A kind of test model and method of the ground foundation simulation sedimentation with Distribution of Magnetic Field Download PDFInfo
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- CN109841138A CN109841138A CN201910244669.8A CN201910244669A CN109841138A CN 109841138 A CN109841138 A CN 109841138A CN 201910244669 A CN201910244669 A CN 201910244669A CN 109841138 A CN109841138 A CN 109841138A
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- 238000004088 simulation Methods 0.000 title claims abstract description 26
- 238000009826 distribution Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004062 sedimentation Methods 0.000 title description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052742 iron Inorganic materials 0.000 claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 20
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a kind of test model that the ground foundation simulation with Distribution of Magnetic Field settles and methods, including a model casing, one piece of partition, one energization magnetic coil group, an electrifying control system, an iron filings layer, one ground layer, be characterized in that: model casing cavity bottom is provided with partition, and one layer of iron filings are laid with above partition, several magnetic coils of controllable switch and watt level are provided with below partition.Test model and method of the invention, the switch and watt level of several magnetic coils can drive the iron filings of corresponding top to form different distributions, and the ground layer above iron filings layer can be equal to the distribution of iron filings layer, realize the simulation of settlement of foundation.The simulation to ground settlement law may be implemented in the present invention, has structure simple, and simulation effect is good, at low cost, repeats experimental strong advantage.
Description
Technical field
The present invention relates to the test models and method of a kind of sedimentation of ground foundation simulation, more specifically, more particularly to a kind of benefit
Iron filings are made to generate uneven distribution to the test model and method of ground foundation simulation sedimentation with magnetic field.
Background technique
It is influenced by multiple factors such as external load effect, temperature, water, the disease of settlement of foundation easily occurs in ground construction of structures
Evil, mechanism and the prevention and treatment of settlement of foundation can be ground by the methods of theoretical calculation, numerical simulation, model test, on-the-spot test
Study carefully.Wherein, model test be in proportion reduced scale restore engineering structure, it can be achieved that simulated object deformation monitor, many condition control
System repeats, and is the effective means of research engineering structure stress deformation, passes through the stress to foundation model and upper part work structure
Deformation test can be used for the performance indexes of the true engineering structure of estimate analysis.Model casing, which is that scale (model) test is common, to be set
Standby, current model casing, which is all made of, is utilized respectively the sedimentation of multiple spot difference to simulate bulk settling, but can not simulate complete
Stress curved surface cannot achieve the simulation to differential settlement.Theoretical calculation and numerical analysis can reflect ground to a certain extent
Stress deformation changing rule, larger with actual error, accuracy is to be improved, although actual test most can intuitively reflect it is heavy
Drop problem, but higher cost and being difficult to carries out the lower repetition test of more influence factors controls, and model test is lower with one compared to relatively
Fixed advantage, therefore the test model that ground foundation simulation sedimentation can be achieved is developed with certain engineering value.
Summary of the invention
To overcome the above disadvantages, a kind of test model that the ground foundation simulation with Distribution of Magnetic Field settles and side are proposed
Method.
The test model that ground foundation simulation with Distribution of Magnetic Field of the invention settles, the model including a upper end opening
A partition that will separate up and down is arranged in case, the inside of model casing, and partition top is the cavity that ground layer is arranged, ground layer top
Model is built in construction for placing pending test.Its special feature is that: the model casing bottom is fixed with support frame group, often
An energization magnetic coil composition energization magnetic coil group is fixed on a support frame: electromagnetic coil group can control each magnetic with one
The control system of coil switch and power is connected.It is provided with one layer of partition above the energization magnetic coil, is placed above partition
One layer of iron filings.It is ground layer above the iron filings layer.
The test method for the test model that ground foundation simulation with Distribution of Magnetic Field of the invention settles, special feature exist
In being realized by following steps: a) constructs model casing, and according to test requirements document and purpose, constructing corresponding size can be accommodated accordingly
The model casing of test model；B) arranges energization magnetic coil, according to practical sedimentation situation to be simulated, first in model casing bottom
The energization magnetic coil of suitable quantity and distribution is set；C) places the partition that can bear upper pressure above energization magnetic coil；
D) places one layer of certain thickness iron filings above partition, and the magnetic field that energization magnetic coil generates can allow iron filings throughout to generate not
Same thickness, thus the sedimentation of ground foundation simulation.E) fills out ground layer above iron filings layer, this layer of embedded ground with Practical Project
The soil property that base phase adapts to.F) corresponding engineering model is placed in above ground layer by, buried under model a certain number of stress and
Displacement sensor.G) forms different magnetic by the switch and energized power of the energization magnetic coil of the different location of control bottom
, it controls the iron filings layer above partition and forms non-uniform thickness distribution, to simulate different sedimentation situations.H) data obtain
It takes, the data for analysis is obtained by stress and displacement sensor.
The beneficial effects of the present invention are: experimental model and method that ground foundation simulation of the invention settles, model casing bottom are put
It is placed in energization magnetic coil group, by controlling the logical solenoid switch and energized power of different location, can produce different magnetic
Field distribution, and then by the attraction to top iron filings, the iron filings layer of uneven distribution is formed, and then generate the ground layer of top
Corresponding sedimentation distribution, therefore the simulation of different ground settlement laws can be carried out.Relative to the ground simulation model having had
For, the characteristics of there is the settlement of foundation more continuously smooth of simulation, mutation will not be generated, simulate complete sedimentation curved surface.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the test model that the ground foundation simulation of the invention with Distribution of Magnetic Field settles；
Fig. 2 is the test model application principle figure that ground foundation simulation of the invention settles；
In figure: 1- model casing, 2- partition, 3- energization magnetic coil, 4- control system, 5- iron filings layer, 6- ground layer.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
As shown in Figure 1, the structure for giving the test model that the ground foundation simulation of the invention with Distribution of Magnetic Field settles is shown
It is intended to, is made of model casing 1, partition 2, energization magnetic coil 3, control system 4, the top of shown model casing is cavity, cavity
Lower section is the horizontal positioned partition 2 being connected with model casing, and partition lower section is provided with energization magnetic coil group 3, energization magnetic coil group and
The control system 4 of outside is connected.
As shown in Fig. 2, give the test model application principle figure of ground foundation simulation sedimentation of the invention, this method include with
Lower step: a) constructs model casing, and according to test requirements document and purpose, the model of corresponding test model can be accommodated by constructing corresponding size
Case；B) arranges energization magnetic coil, according to it is to be simulated it is practical settle situation, first in model casing bottom setting suitable quantity and
The energization magnetic coil of distribution；C) places the partition that can bear upper pressure above energization magnetic coil；D) is put above partition
One layer of certain thickness iron filings are set, the magnetic field that energization magnetic coil generates can allow iron filings throughout to generate different thickness, thus mould
The sedimentation of quasi- ground.E) fills out ground layer above iron filings layer, this layer of embedded soil property adaptable with the ground of Practical Project.
F) corresponding engineering model is placed in above ground layer by, and a certain number of stress and displacement sensor are buried under model.g).
By controlling the switch and energized power of the energization magnetic coil of the different location of bottom, different magnetic field is formed, is controlled on partition
The iron filings layer of side forms non-uniform thickness distribution, to simulate different sedimentation situations.H) data acquisition, by stress and
Displacement sensor obtains the data for analysis.The above is only a preferred embodiment of the present invention, it should be pointed out that: for this
For the those of ordinary skill of technical field, without departing from the principle of the present invention, several improvement and profit can also be made
Decorations, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (2)
1. a kind of test model that the ground foundation simulation with Distribution of Magnetic Field settles and method, it is characterised in that: including a model
Case, one piece of partition, an energization magnetic coil group, an electrifying control system, an iron filings layer, a ground layer, energization magnet-wire
Circle group is located at below model casing, by the switch and watt level of each energization magnetic coil, to generate different Distribution of Magnetic Field, into
And the iron filings layer above partition is allowed to generate corresponding distribution, the distribution of the ground layer of top will be convergent with iron filings layer, to simulate
Different settlement of foundation.
2. test model and method that a kind of ground foundation simulation with Distribution of Magnetic Field according to claim 1 settles, special
Sign is: generating different Distribution of Magnetic Field with the switch and watt level of several magnetic coils, and then controls the iron filings of top
The distribution of layer, the simulation of Lai Jinhang settlement of foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910244669.8A CN109841138A (en) | 2019-03-28 | 2019-03-28 | A kind of test model and method of the ground foundation simulation sedimentation with Distribution of Magnetic Field |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910244669.8A CN109841138A (en) | 2019-03-28 | 2019-03-28 | A kind of test model and method of the ground foundation simulation sedimentation with Distribution of Magnetic Field |
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| CN109841138A true CN109841138A (en) | 2019-06-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576328A (en) * | 2020-04-17 | 2020-08-25 | 华北水利水电大学 | Utilize magnetic field force to change laboratory bench of gelatinization sand gravel dam model test piece unit weight |
| CN113883996A (en) * | 2021-09-14 | 2022-01-04 | 中铁西北科学研究院有限公司 | Simulation device and analysis method for influence of foundation additional stress on superstructure |
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| CN104898467A (en) * | 2015-03-27 | 2015-09-09 | 西北工业大学 | Uniform electromagnetic force field generation device and method |
| CN205120708U (en) * | 2015-07-24 | 2016-03-30 | 华北水利水电大学 | Test device of mechanism is subsided in simulation collecting space area |
| CN105527389A (en) * | 2016-03-02 | 2016-04-27 | 山东交通学院 | Jack-based experiment model and method for simulating uneven settlement of foundation |
| CN109243287A (en) * | 2018-11-06 | 2019-01-18 | 重庆三峡职业学院 | A kind of interactive sand table system |
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2019
- 2019-03-28 CN CN201910244669.8A patent/CN109841138A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898467A (en) * | 2015-03-27 | 2015-09-09 | 西北工业大学 | Uniform electromagnetic force field generation device and method |
| CN205120708U (en) * | 2015-07-24 | 2016-03-30 | 华北水利水电大学 | Test device of mechanism is subsided in simulation collecting space area |
| CN105527389A (en) * | 2016-03-02 | 2016-04-27 | 山东交通学院 | Jack-based experiment model and method for simulating uneven settlement of foundation |
| CN109243287A (en) * | 2018-11-06 | 2019-01-18 | 重庆三峡职业学院 | A kind of interactive sand table system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576328A (en) * | 2020-04-17 | 2020-08-25 | 华北水利水电大学 | Utilize magnetic field force to change laboratory bench of gelatinization sand gravel dam model test piece unit weight |
| CN113883996A (en) * | 2021-09-14 | 2022-01-04 | 中铁西北科学研究院有限公司 | Simulation device and analysis method for influence of foundation additional stress on superstructure |
| CN113883996B (en) * | 2021-09-14 | 2024-02-02 | 中铁西北科学研究院有限公司 | Simulation device and analysis method for influence of foundation additional stress on upper structure |
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