CN108166547A - Resistance value alertness grid settlement of foundation tests system and method - Google Patents
Resistance value alertness grid settlement of foundation tests system and method Download PDFInfo
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- CN108166547A CN108166547A CN201810090682.8A CN201810090682A CN108166547A CN 108166547 A CN108166547 A CN 108166547A CN 201810090682 A CN201810090682 A CN 201810090682A CN 108166547 A CN108166547 A CN 108166547A
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- 230000036626 alertness Effects 0.000 title claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 238000006073 displacement reaction Methods 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 15
- 238000004062 sedimentation Methods 0.000 claims description 15
- 239000002689 soil Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000010998 test method Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 5
- 230000000875 corresponding Effects 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
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- 230000000007 visual effect Effects 0.000 description 3
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- 102000010637 Aquaporins Human genes 0.000 description 1
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- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Abstract
The invention discloses resistance value alertness grid settlement of foundation to test system and method, measuring cell including not influencing TGXG performance parameter after insertion, the measuring cell be embedded in each grid it is horizontal and vertical on, and to be connected in parallel between measuring cell, insulating layer is enclosed with outside the measuring cell, it is connected between the insulating layer and measuring cell, insulating layer and TGXG by cohesive mode, the orthogonal placement of the TGXG embedded with measuring cell, every layer is superimposed in order；Grid stress deformation causes the deformation of measuring cell, then brings measuring cell change in resistance, and the variation of resistance value causes measurement change in electric, and data transmission is collected to Cloud Server in monitoring point, and Cloud Server communicates with remote control center.The resistance value alertness grid settlement of foundation test system proposed in the present invention can increase the visuality of settlement of foundation process, contribute to the further research of settlement of foundation.
Description
Technical field
The present invention relates to technical field of civil engineering, and system and side are tested more particularly to resistance value alertness grid settlement of foundation
Method.
Background technology
Disaster of mountain massif coast takes place frequently in recent years, has seriously threatened the security of the lives and property of people, while can influence attached
The normal pass of nearly road traffic.TGXG is mostly used in civil engineering and does protection network, with stable side slope.Settlement of foundation refers to ground
Base soil layer foundation surface caused by densification under additional stress effect sinks.Excessive sedimentation, particularly differential settlement, meeting
Make building run-off the straight, cracking so that being unable to normal use.Existing foundation settlement prediction method is by its assumed condition and reality
There are the larger limitation not being inconsistent, gained settlement prediction result is often between measured settlement there are larger difference, therefore over the ground
The research of base settlement prediction method needs further to be developed.
Foundation displacement test at present is mostly carried out using laboratory test or numerical simulation, without representativeness, can not be tested
The correctness of conclusion is demonstrate,proved, and the measure of existing pre- landslide-proofing is only through the sign before naked-eye observation landslide occurs or abnormal existing
As the mode of judgement is influenced greatly by subjective factor, and human error is larger, and micro-cracks or displacement naked eyes can not be observed, only
After fracture extension is to certain length and width, it is considerable just to become naked eyes.
In conclusion effective solution is still lacked for the visual testing problem of settlement of foundation in the prior art.
Invention content
In order to solve the deficiencies in the prior art, there is provided the surveys of resistance value alertness grid settlement of foundation for an object of the present invention
The test system system according to wire resistance sizes with the reduction of cross-sectional area increased principle, it is orthogonal using multilayer
TGXG monitoring settlement of foundation and analysis of slope slip-crack surface, pass through analogy layerwise summation method, measure each layer of displacement and become
Change situation is superimposed each layer as a result, Space foundation sedimentation face can be obtained, so that settlement of foundation to get each layer final mean annual increment movement curved surface
Process ornamental enhances, and helps further to study the infall process of ground.
Resistance value alertness grid settlement of foundation tests system, the measurement member including not influencing TGXG performance parameter after insertion
Part, the measuring cell be embedded in each grid it is horizontal and vertical on, it is described to measure member and to be connected in parallel between measuring cell
Insulating layer is enclosed with outside part, is connected between the insulating layer and measuring cell, insulating layer and TGXG by cohesive mode
It connects, the orthogonal placement of the TGXG embedded with measuring cell, every layer is superimposed in order；
The grid stress deformation causes the deformation of measuring cell, then brings measuring cell change in resistance, the change of resistance value
Change causes measurement change in electric, and data transmission is collected to Cloud Server in monitoring point, and Cloud Server communicates with remote control center.
Further, the measuring cell use sensitive grid, with thickness be 0.003~0.101mm metal foil palisade or
It is made of metal wire.
Resistance value alertness grid settlement of foundation test method, including：
The horizontal and vertical embedded measuring cell for not influencing TGXG performance parameter of each grid；
It is connected between insulating layer and measuring cell, insulating layer and TGXG by cohesive mode；
The orthogonal placement of TGXG of measuring cell is would be embedded with, is superimposed in order in layer, according to layering summation
Method is being calculated in depth bounds, if settlement of foundation is divided into dried layer by TGXG arrangement；
Measuring cell according to TGXG is segmented, while measures the resistance of all measuring cell segments, during settlement of foundation,
Final position after each point sedimentation is determined according to the resistance of measurement, so as to form a settlement of foundation face；
Each soil layer can generate a settlement of foundation face, and multiple sedimentation faces are superimposed to form a three-dimensional ground
Settle body.
Further, when being formed, geogrid deformation leads to measuring cell tension, cross section in the settlement of foundation face
Product reduces, and resistance value becomes larger, and single measuring cell can not determine tension point position, can by mutually perpendicular two measuring cells
Determine one of tension point, then more mutually perpendicular wires can determine multiple tension points, according to each vertical direction
On displacement it is different, the final position after each point sedimentation is determined, so as to form a settlement of foundation face.
Further, after the measuring cell segmentation, each measuring cell segment is considered as a resistance, same root measures
In circuit, electric current is equal, and initial resistance all same, then voltage is identical for metal segments series connection on element.
Further, after ground settles, the metal segment pulled condition on same measuring cell is different, then resistance
Difference surveys the voltage of each segment respectively, corresponding resistance change rate and change in displacement value is can obtain, so as to entirely be counted
The displacement of each tension point in depth is calculated to get the settlement of foundation face of each soil layer and three-dimensional settlement of foundation body.
Further, by the variation of resistance value in circuit caused by geogrid deformation, electricity is converted to by conversion circuit
The variation of pressure acquires the displacement of each tension point, by network transmission to Cloud Server, passes through data conversion storage module in real time
Data conversion storage processing is carried out after reception, remote monitoring center returns data receiver in database, carry out Data Management Analysis and
Graphical interfaces is shown, finally realizes the automatic monitoring of settlement of foundation process.
Compared with prior art, the beneficial effects of the invention are as follows：
First, existing foundation settlement prediction method by its assumed condition and physical presence it is larger be not inconsistent limited, gained sedimentation
Prediction result needs into one the research of foundation settlement prediction method often between measured settlement there are larger difference
The development of step.And the resistance value alertness grid settlement of foundation test system proposed in the present invention can increase the visual of settlement of foundation process
Property, contribute to the further research of settlement of foundation.
2nd, the change in displacement of a large amount of tension points is disposably measured, it is time saving and energy saving, it does not need to carry out to repeat to test many times,
Complicated cumbersome experimentation is reduced, and disposably provides a large amount of data for scientific worker.
3rd, it is tested using the TGXG of embedded wire, observes the entire evolution of settlement of foundation in real time,
So that development visuality and the controllability enhancing destroyed, can obtain the real-time change in displacement of each soil layer, data are very comprehensive, both
Chromatographic analysis can be carried out, can also carry out vertical analysis.
4th, the abnormal phenomenon shown before only being occurred by naked-eye observation landslide, the result of judgement is by subjective factor shadow
Sound is very big, and is monitored by instrument and equipment, and data are reliably accurate, and can observe naked-eye observation less than destruction, can be in ground
It the primary stage of depression, takes appropriate measures in time, reduces the funds of engineering maintenance.
5th, compared to resistance-strain type displacement sensor, using the method for embedding wire into TGXG, to geotechnological lattice
The influence of grid functional characteristic is smaller, compared with equipment on the market, can reduce the disturbance to concrete, will not destroy structure, and
It is easier to operate, streamline operation method can be carried out.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.
Fig. 1 is the schematic diagram for embedding wire into TGXG；
Fig. 2 tests system flow chart for resistance value alertness grid settlement of foundation；
Fig. 3 resistance value alertness grid foundation displacement test principle schematic diagrames；
Fig. 4 resistance value alertness grids foundation displacement tests system circuit diagram.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, the visual testing that settlement of foundation exists in the prior art is insufficient, in order to solve
As above the technical issues of, present applicant proposes resistance value alertness grid settlement of foundation to test system and method.
In a kind of typical embodiment of the application, resistance value alertness grid settlement of foundation test system, the resistance are provided
Check-in quick grid settlement of foundation test system, according to wire resistance sizes with the reduction of cross-sectional area increased principle,
It can be by wire in TGXG.
As shown in Figure 1, wire is embedded in TGXG, it is desirable that wire is sensitive to the reacting condition of cross-sectional area, and
It is as thin as possible, it is proposed that using sensitive grid, made of the metal foil palisade that thickness is 0.003~0.101mm or of metal wire,
To ensure that wire does not influence the performance parameters such as the intensity of TGXG after being embedded in.Each grid is horizontal and vertical two embedded
Wire is wrapped outside wire with insulating layer, shields, prevent moisture, dust etc. from corroding to it.
It is with binding agent that insulating layer and wire, insulating layer and TGXG is bonding, to ensure that the small of wire should
Change also can be transmitted accurately.
Resistance value alertness grid settlement of foundation test system flow is illustrated in figure 2, during settlement of foundation, geogrid deformation,
Lead to wire tension, cross-sectional area reduces, and resistance value becomes larger, the variation of resistance value in circuit is converted by conversion circuit
For the variation of voltage, the displacement of each tension point is acquired in real time, by network transmission to Cloud Server, passes through data conversion storage
Module carries out data conversion storage processing after receiving, and remote monitoring center returns data receiver in database, carries out data processing point
Analysis and graphical interfaces are shown, finally realize the automatic monitoring of settlement of foundation process.
In test, resistance value alertness grid foundation displacement test principle is as shown in figure 3, would be embedded with the geotechnique of wire
The orthogonal placement of grid, is superimposed in order in layer, according to layerwise summation method, is calculating in depth bounds, ground is sunk
If drop is divided into dried layer by TGXG arrangement, the decrement of each layering is observed, it is assumed that TGXG arranges n-layer altogether, then
N-th layer settling amount is the sum of each layer settling amount in top.
What layerwise summation method measured is the sum of settling amount of a certain all soil layers in layer top, and it is each point that decrement, which is, herein
The settling amount of layer, which is to be different from settling amount, can be acquired often with the mode of retrodicting after layerwise summation method acquires result
The settling amount of one layering.
Wire according to TGXG is segmented, while measures the resistance of all wire segments, during settlement of foundation, geotechnique
Grid deforms, and leads to wire tension, and cross-sectional area reduces, and resistance value becomes larger, and single wire can not determine tension point position,
One of tension point can determine by mutually perpendicular two one metal wire, then more mutually perpendicular wires can determine multiple
Tension point, it is different according to the displacement on each vertical direction, it may be determined that the final position after each point sedimentation, so as to shape
Into a settlement of foundation face.Each soil layer can generate a settlement of foundation face, and multiple sedimentation faces, which are superimposed, to be formed
One three-dimensional settlement of foundation body.
According to the voltage change in the circuit where each layering, the resistance change rate and displacement for obtaining corresponding measuring cell become
Change value can obtain crosspoint (tension point) settling amount according to horizontal and vertical displacement variable, this settling amount sinks for each layer in top
The displacement of the sum of drop amount, i.e. the tension point, so as to obtain the final position after tension point sedimentation.
Resistance value alertness grid foundation displacement test circuit system as shown in figure 4, wire be coupled circuit mode for parallel connection,
Both the accuracy of measurement result can have been improved, prevented also from the damage of a wherein one metal wire during failure, has influenced measurement result.It will be every
A wire segment is considered as a resistance, and in circuit, electric current is equal the metal segments series connection on same root resistance wire, initially
Resistance all same, then voltage is identical.
All wires are in parallel, are respectively compared the voltage change of horizontal and vertical each metal segment, consider friendship
The displacement of each tension point of fork, you can obtain every layer of settlement of foundation face.
After ground settles, the metal segment pulled condition on same wire is different, then resistance is different, surveys respectively
The voltage of each segment, can obtain corresponding resistance change rate and change in displacement value, each in depth so as to obtain entirely calculating
Settlement of foundation face and three-dimensional settlement of foundation body of the displacement of a tension point to get each soil layer.
In the field of the invention examples of implementation, resistance value alertness grid settlement of foundation test method is also disclosed, including：
The horizontal and vertical embedded measuring cell for not influencing TGXG performance parameter of each grid；
It is connected between insulating layer and measuring cell, insulating layer and TGXG by cohesive mode；
The orthogonal placement of TGXG of measuring cell is would be embedded with, is superimposed in order in layer, according to layering summation
Method is being calculated in depth bounds, if settlement of foundation is divided into dried layer by TGXG arrangement；
Measuring cell according to TGXG is segmented, while measures the resistance of all measuring cell segments, during settlement of foundation,
Final position after each point sedimentation is determined according to the resistance of measurement, so as to form a settlement of foundation face；
Each soil layer can generate a settlement of foundation face, and multiple sedimentation faces are superimposed to form a three-dimensional ground
Settle body.
The sedimentation test of the present invention：Multilayer TGXG is laid with, passes through layer and the settlement of foundation of layer in the vertical direction, shape
Into three-dimensional settlement of foundation body, it is intended to observe the subsidence of foundations.
The present invention in the specific implementation, is embedded wire into TGXG or water channel, all it should be noted that preventing wire from giving birth to
Rust, since there are circuits in system, it should be noted that setting insulating layer, protective resistance silk are not influenced by water grading factors.Simultaneously should
Wire, insulating layer and ground are bonded together with binding agent, it is ensured that the small strain of ground also can be anti-by wire
It reflects in system, ensures the accuracy of parameter.
The present invention is simple and practicable using wire detection, and novelty is wire being applied in the measurement of deformation,
The measurement of settlement of foundation is applied to by embedding wire into TGXG, the method can carry out pile line operation, convenient for advising greatly
Mould uses, and is mainly improved in manufacture craft.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (7)
1. resistance value alertness grid settlement of foundation tests system, it is characterized in that, including TGXG performance parameter is not influenced after insertion
Measuring cell, the measuring cell be embedded in each grid it is horizontal and vertical on, and to be connected in parallel between measuring cell, institute
It states and insulating layer is enclosed with outside measuring cell, pass through bonding between the insulating layer and measuring cell, insulating layer and TGXG
Mode connect, the orthogonal placement of the TGXG embedded with measuring cell, every layer is superimposed in order；
The grid stress deformation causes the deformation of measuring cell, then brings measuring cell change in resistance, and the variation of resistance value is drawn
It rises and measures change in electric, data transmission is collected to Cloud Server in monitoring point, and Cloud Server communicates with remote control center.
2. resistance value alertness grid settlement of foundation as described in claim 1 tests system, it is characterized in that, the measuring cell uses
Sensitive grid makes of the metal foil palisade that thickness is 0.003~0.101mm or of metal wire.
3. resistance value alertness grid settlement of foundation test method, it is characterized in that, including：
The horizontal and vertical embedded measuring cell for not influencing TGXG performance parameter of each grid；
It is connected between insulating layer and measuring cell, insulating layer and TGXG by cohesive mode；
The orthogonal placement of TGXG of measuring cell is would be embedded with, is superimposed in order in layer, according to layerwise summation method,
It calculates in depth bounds, if settlement of foundation is divided into dried layer by TGXG arrangement；
Measuring cell according to TGXG is segmented, while measures the resistance of all measuring cell segments, during settlement of foundation, according to
The resistance of measurement determines the final position after each point sedimentation, so as to form a settlement of foundation face；
Each soil layer can generate a settlement of foundation face, and multiple sedimentation faces are superimposed to form a three-dimensional settlement of foundation
Body.
4. resistance value alertness grid settlement of foundation test method as claimed in claim 3, it is characterized in that, the settlement of foundation face exists
During formation, geogrid deformation leads to measuring cell tension, and cross-sectional area reduces, and resistance value becomes larger, and single measuring cell can not
Determine tension point position, one of tension point can determine by mutually perpendicular two measuring cells, then more it is orthogonal
Wire can determine multiple tension points, it is different according to the displacement on each vertical direction, after determining each point sedimentation
Final position, so as to form a settlement of foundation face.
5. resistance value alertness grid settlement of foundation test method as claimed in claim 3, it is characterized in that, the measuring cell segmentation
Afterwards, each measuring cell segment is considered as a resistance, the metal segments series connection on same root measuring cell in circuit, electric current
It is equal, initial resistance all same, then voltage is identical.
6. resistance value alertness grid settlement of foundation test method as claimed in claim 3, it is characterized in that, when ground settles
Afterwards, the metal segment pulled condition on same measuring cell is different, then resistance is different, surveys the voltage of each segment respectively, can obtain
To corresponding resistance change rate and change in displacement value, so as to obtain entirely calculating the displacement of each tension point in depth to get
The settlement of foundation face of each soil layer and three-dimensional settlement of foundation body.
7. resistance value alertness grid settlement of foundation test method as claimed in claim 3, it is characterized in that, geogrid deformation is drawn
The variation of resistance value, the variation of voltage is converted to by conversion circuit, acquires the displacement of each tension point in real time in the circuit risen,
By network transmission to Cloud Server, data conversion storage processing is carried out after being received by data conversion storage module, in remote monitoring
The heart returns data receiver in database, carries out Data Management Analysis and graphical interfaces is shown, final to realize settlement of foundation process
Automatic monitoring.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090682.8A CN108166547A (en) | 2018-01-30 | 2018-01-30 | Resistance value alertness grid settlement of foundation tests system and method |
| AU2018405759A AU2018405759B2 (en) | 2018-01-30 | 2018-06-26 | Resistance-sensitive grid foundation settlement test system and method |
| PCT/CN2018/092747 WO2019148752A1 (en) | 2018-01-30 | 2018-06-26 | Foundation settlement testing system and method adopting resistance-sensitive geogrids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810090682.8A CN108166547A (en) | 2018-01-30 | 2018-01-30 | Resistance value alertness grid settlement of foundation tests system and method |
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| Publication Number | Publication Date |
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| CN108166547A true CN108166547A (en) | 2018-06-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019148752A1 (en) * | 2018-01-30 | 2019-08-08 | 山东大学 | Foundation settlement testing system and method adopting resistance-sensitive geogrids |
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| JP2003097906A (en) * | 2001-09-27 | 2003-04-03 | Tokyo Sokki Kenkyusho Co Ltd | Strain gauge and method for measuring strain |
| CN101793020A (en) * | 2010-03-04 | 2010-08-04 | 中国矿业大学 | Geogrid strain testing device and testing method thereof |
| CN105547139A (en) * | 2015-12-05 | 2016-05-04 | 浙江大学 | Wi-Fi-based wireless strain measurement system |
| CN107607030A (en) * | 2017-09-22 | 2018-01-19 | 山东大学 | The monitoring of structures and its construction method of a kind of existing roadbed, slope stability |
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2018
- 2018-01-30 CN CN201810090682.8A patent/CN108166547A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003097906A (en) * | 2001-09-27 | 2003-04-03 | Tokyo Sokki Kenkyusho Co Ltd | Strain gauge and method for measuring strain |
| CN101793020A (en) * | 2010-03-04 | 2010-08-04 | 中国矿业大学 | Geogrid strain testing device and testing method thereof |
| CN105547139A (en) * | 2015-12-05 | 2016-05-04 | 浙江大学 | Wi-Fi-based wireless strain measurement system |
| CN107607030A (en) * | 2017-09-22 | 2018-01-19 | 山东大学 | The monitoring of structures and its construction method of a kind of existing roadbed, slope stability |
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| WO2019148752A1 (en) * | 2018-01-30 | 2019-08-08 | 山东大学 | Foundation settlement testing system and method adopting resistance-sensitive geogrids |
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