AU2018405759B2 - Resistance-sensitive grid foundation settlement test system and method - Google Patents
Resistance-sensitive grid foundation settlement test system and method Download PDFInfo
- Publication number
- AU2018405759B2 AU2018405759B2 AU2018405759A AU2018405759A AU2018405759B2 AU 2018405759 B2 AU2018405759 B2 AU 2018405759B2 AU 2018405759 A AU2018405759 A AU 2018405759A AU 2018405759 A AU2018405759 A AU 2018405759A AU 2018405759 B2 AU2018405759 B2 AU 2018405759B2
- Authority
- AU
- Australia
- Prior art keywords
- resistance
- foundation settlement
- geogrids
- measuring
- measuring element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (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)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
A foundation settlement testing system adopting resistance-sensitive geogrids comprises: measurement elements which do not affect performance parameters of a geogrid after being embedded. The measurement elements are embedded in a transverse direction and a longitudinal direction of each geogrid. The measuring elements are connected in parallel and an outer portion thereof is wrapped in an insulation layer. The insulation layer is connected to the measurement elements by means of bonding, and the insulation layer is connected to the geogrids by means of bonding. The geogrids in which the measurement elements are embedded are configured to be perpendicular to each other, and each layer of the geogrids are sequentially stacked. Deformation of the geogrids by a force causes deformation of the measurement elements, such that resistance values of the measurement elements are changed. The change in resistance values causes an electrical measurement signal to change. A monitoring point acquires data and transmits the data to a cloud server. The cloud server communicates with a remote control center. Further disclosed is a foundation settlement testing method adopting resistance-sensitive geogrids.
Description
Technical Field
The invention relates to the technical field of civil engineering, and more particularly, to a resistance-sensitive grid foundation settlement test system and method.
Related Art
The frequent occurrence of landslide disasters in recent years has seriously threatened people's lives and property, and will also affect the normal traffic of nearby roads. In civil engineering, geogrids are often used as protective nets to stabilize side slopes. Foundation settlement refers to the settlement of a foundation surface caused by the compaction of a foundation soil layer under an additional stress. Excessive settlement, especially uneven settlement, will cause a building to tilt and crack, making it impossible to use normally. Existing foundation settlement prediction methods are limited by the fact that their assumptions are greatly inconsistent with actual ones. Settlement prediction results often differ greatly from measured settlement values. Therefore, the research on the foundation settlement prediction methods needs further development.
At present, foundation displacement tests are mostly carried out by laboratory tests or numerical simulations, which are not representative and cannot verify the correctness of conclusions. The existing measures to prevent landslides are only to observe signs or abnormal phenomena before the occurrence of landslides with naked eyes. The judgment mode is greatly affected by subjective factors, human errors are large, and small cracks or displacements cannot be observed with the naked eyes. Only when the cracks extend to a certain length and width, the cracks are visible to the naked eyes.
In summary, there is still no effective solution to the problem of visual testing of foundation settlement in the existing technology.
Summary
In order to solve the deficiencies of the existing technology, one of the objects of the invention is to provide a resistance-sensitive grid foundation settlement test system. In the system, according to the principle that the resistance size of a metal wire increases with the decrease of a cross-sectional area, foundation settlement is monitored and a side slope slip surface is analyzed using a plurality of layers of geogrids mutually perpendicular, a displacement change of each layer is measured by an analogy layer-wise summation method, that is, a final displacement curve of each layer is obtained, and a three-dimensional foundation settlement surface may be obtained by overlapping results of various layers, so that the visibility of a foundation sedimentation process is enhanced, and a further research on the foundation settlement process is facilitated.
The resistance-sensitive grid foundation settlement test system includes measuring elements which do not affect performance parameters of geogrids after being embedded. The measuring elements are embedded in a transverse direction and a longitudinal direction of each grid. The measuring elements are connected in parallel. Insulating layers are wrapped around the measuring elements. The insulating layers and the measuring elements are connected in a bonding manner, and the insulating layers and the geogrids are connected in a bonding manner. The geogrids embedded with the measuring elements are vertically placed with one another in sequentially overlapped layers.
The deformation of the measuring elements is caused by the deformation of the grids due to stress to cause resistance changes of the measuring elements. The resistance changes cause changes of measuring electric signals. A monitoring point collects data and transmits the same to a cloud server. The cloud server communicates with a remote control center.
Further, the measuring elements adopt sensitive grids, which are made of metal foil grids having a thickness of 0.003 to 0.101 mm or metal wires.
A resistance-sensitive grid foundation settlement test method includes:
embedding measuring elements which do not affect performance parameters of geogrids in a transverse direction and a longitudinal direction of each grid; connecting insulating layers and the measuring elements in a bonding manner, and connecting the insulating layers and the geogrids in a bonding manner; placing the geogrids embedded with the measuring elements vertically with one another in sequentially overlapped layers, and dividing, within a calculated depth range, foundation settlement into a plurality of layers in a geogrid layout manner according to a layer-wise summation method; segmenting the measuring elements according to the geogrids while measuring a resistance of all small measuring element segments, and determining a final position of each point after settlement according to the measured resistance during foundation settlement, so as to form a foundation settlement surface; and generating a foundation settlement surface by each soil layer, and overlapping a plurality of settlement surfaces to form a three-dimensional foundation settlement body.
Further, when the foundation settlement surface is formed, the geogrids are deformed such that the measuring elements are tensioned, a cross-sectional area is reduced, a resistance value is increased, a single measuring element cannot determine the position of a tension point, one of the tension points may be determined by two measuring elements mutually perpendicular, a plurality of metal wires mutually perpendicular may determine a plurality of tension points, and a final position of each point after settlement is determined according to different displacements of each point in a vertical direction, so as to form a foundation settlement surface.
Further, after the measuring elements are segmented, each small measuring element segment is regarded as a resistor, and metal segments on the same measuring element are connected in series to a circuit, are equal in current and initial resistance, and thus are equal in voltage.
Further, after a foundation is settled, small metal segments on the same measuring element are different in tension situations and thus different in resistance, and a corresponding resistance change rate and displacement change value may be obtained by testing the voltage of each small segment respectively, so as to obtain the displacement of each tension point in the entire calculated depth, that is, obtain the foundation settlement surface of each soil layer and the three-dimensional foundation settlement body.
Further, a resistance value change in a circuit caused by the deformation of the geogrids is converted into a voltage change by a switching circuit, the displacement of each tension point is collected in real time, remotely transmitted to a cloud server through a network, and received by a data dump module for data dump, a remote monitoring center receives back data in a database for data processing analysis and graphical interface display, and automatic monitoring of a foundation settlement process is finally implemented.
Compared with the existing technology, the invention has the following beneficial effects.
First, existing foundation settlement prediction methods are limited by the fact that their assumptions are greatly inconsistent with actual ones. Settlement prediction results often differ greatly from measured settlement values. Therefore, the research on the foundation settlement prediction methods needs further development. The resistance-sensitive grid foundation settlement test system proposed in the invention can increase the visibility of a foundation sedimentation process and facilitate a further research on foundation settlement.
Second, displacement changes of a large number of tension points are measured at one time, time and effort are saved, it is not necessary to repeat experiments many times, complicated and cumbersome experimental processes are reduced, and scientists are provided with a large amount of data at one time.
Third, geogrids embedded with metal wires may be used for testing, and the entire development process of foundation settlement is observed in real time, so that the visibility and controllability of the development of damage are enhanced, real-time displacement changes of each soil layer may be obtained, and data is very comprehensive either for layer-wise analysis or longitudinal analysis.
Fourth, abnormal phenomena presented before the occurrence of landslides are observed only with naked eyes. The judgment result is greatly affected by subjective factors. Data is reliable and accurate through the monitoring of instruments and equipment, and the damage that cannot be observed by the naked eyes can be observed. In a primary stage of foundation settlement, corresponding measures are taken in time to reduce the cost of project maintenance.
Fifth, compared with a resistance strain type displacement sensor, a method of embedding a metal wire into a geogrid has little effect on the functional characteristics of the geogrid. Compared with equipment on the market, the disturbance to concrete can be reduced, the structure cannot be damaged, the method is easier to operate, and a pipeline operation method can be carried out.
Brief Description of The Drawings
The accompanying drawings constituting a part of this application are used for providing further understanding for this application. Exemplary embodiments of this application and descriptions thereof are used for explaining this application and do not constitute an improper limitation to this application.
FIG. 1 is a schematic diagram of embedding a metal wire into a geogrid.
FIG. 2 is a flowchart of a resistance-sensitive grid foundation settlement test system.
FIG. 3 is a schematic principle diagram of a resistance-sensitive grid foundation displacement test system.
FIG. 4 is a schematic circuit diagram of a resistance-sensitive grid foundation displacement test system.
Detailed Description
It should be noted that the following detailed descriptions are all exemplary and are intended to provide a further understanding of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.
It should be noted that terms used herein are only for describing specific implementations and are not intended to limit exemplary implementations according to this application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise. In addition, it should further be understood that terms "comprise" and/or "include" used in this specification indicate that there are features, steps, operations, devices, components, and/or combinations thereof.
As introduced in the Related Art, there are insufficient visual tests for foundation settlement in the existing technology. In order to solve the above technical problems, this application proposes a resistance-sensitive grid foundation displacement test system and method.
In a typical implementation of this application, a resistance-sensitive grid foundation displacement test system is provided. In the resistance-sensitive grid foundation displacement test system, according to the principle that the resistance size of a metal wire increases with the decrease of a cross-sectional area, the metal wire may be embedded into a geogrid.
As shown in FIG. 1, the metal wire is embedded in the geogrid. The metal wire is required to be sensitive to changes in a cross-sectional area, and should be as thin as possible. A sensitive grid made of metal foil grids having a thickness of 0.003 to 0.101 mm or metal wires is recommended to ensure that the metal wire does not affect performance parameters such as the strength of the geogrid after being embedded. Each grid is embedded with two metal wires in a transverse direction and a longitudinal direction, respectively. Insulating layers are wrapped around the metal wires to protect the metal wires from corrosion caused by moisture and dust.
The insulating layers are bonded with the metal wires and the geogrids using a bonder to ensure that the small strain of the metal wires can also be accurately transmitted.
A flow of the resistance-sensitive grid foundation settlement test system is shown in FIG. 2. When a foundation is settled, the geogrids are deformed such that the metal wires are tensioned, the cross-sectional area is reduced, and a resistance value is increased. A resistance value change in a circuit is converted into a voltage change by a switching circuit, the displacement of each tension point is collected in real time, remotely transmitted to a cloud server through a network, and received by a data dump module for data dump, a remote monitoring center receives back data in a database for data processing analysis and graphical interface display, and automatic monitoring of a foundation settlement process is finally implemented.
During the test, the principle of a resistance-sensitive grid foundation displacement test system is shown in FIG. 3. The geogrids embedded with the metal wires are placed vertically with one another in sequentially overlapped layers, foundation settlement is divided into a plurality of layers in a geogrid layout manner within a calculated depth range according to a layer-wise summation method, and the amount of compression of each layer is observed. Assuming that there are n layers of geogrids in total, the settlement volume of the nth layer is the sum of settlement volumes of the upper layers.
The sum of settlement volumes of all soil layers on the upper part of a certain layer is measured by the layer-wise summation method. The amount of compression here is the settlement volume of each layer. The expression is to distinguish it from the settlement volume. After the results are obtained by the layer-wise summation method, the settlement volume of each layer may be obtained by backward inversion.
The metal wires are segmented according to the geogrids while the resistance of all small metal wire segments is measured. When the foundation is settled, the geogrids are deformed such that the metal wires are tensioned, the cross-sectional area is reduced, the resistance value is increased, a single metal wire cannot determine the position of a tension point, one of the tension points may be determined by two metal wires mutually perpendicular, a plurality of metal wires mutually perpendicular may determine a plurality of tension points, and a final position of each point after settlement may be determined according to different displacements of each point in a vertical direction, so as to form a foundation settlement surface. A foundation settlement surface is generated by each soil layer, and a plurality of settlement surfaces are overlapped to form a three-dimensional foundation settlement body.
According to a voltage change in a circuit where each layer is located, a resistance change rate and displacement change value of a corresponding measuring element are obtained, and a settlement volume at an intersection (tension point) may be obtained according to displacement change amounts in a transverse direction and a longitudinal direction. The settlement volume is the sum of settlement volumes of the upper layers, that is, the displacement of the tension point, so as to obtain a final position of the tension point after settlement.
A circuit of the resistance-sensitive grid foundation displacement test system is shown in FIG. 4. The metal wires are connected in parallel to the circuit, so that the accuracy of a measuring result can be improved, and the measuring result can also be prevented from being affected by the failure caused by the damage of one of the metal wires. Each small metal wire segment is regarded as a resistor. Metal segments on the same resistance wire are connected in series to a circuit, are equal in current and initial resistance, and thus are equal in voltage.
All the metal wires are connected in parallel, and the voltage changes of small metal segments in the transverse direction and the longitudinal direction are compared respectively, and the displacement of each crossing tension point is comprehensively considered to obtain a foundation settlement surface of each layer.
After the foundation is settled, small metal segments on the same metal wire are different in tension situations and thus different in resistance, and a corresponding resistance change rate and displacement change value may be obtained by testing the voltage of each small segment respectively, so as to obtain the displacement of each tension point in the entire calculated depth, that is, obtain the foundation settlement surface of each soil layer and the three-dimensional foundation settlement body.
In another implementation example of the invention, a resistance-sensitive grid foundation settlement test method is also disclosed. The method includes the following steps.
Measuring elements which do not affect performance parameters of geogrids are embedded in a transverse direction and a longitudinal direction of each grid.
Insulating layers are connected to the measuring elements in a bonding manner, and the insulating layers are connected to the geogrids in a bonding manner.
The geogrids embedded with the measuring elements are placed vertically with one another in sequentially overlapped layers, and foundation settlement is divided into a plurality of layers in a geogrid layout manner within a calculated depth range according to a layer-wise summation method.
The measuring elements are segmented according to the geogrids while measuring a resistance of all small measuring element segments, and a final position of each point after settlement is determined according to the measured resistance during foundation settlement, so as to form a foundation settlement surface.
A foundation settlement surface is generated by each soil layer, and a plurality of settlement surfaces are overlapped to form a three-dimensional foundation settlement body.
The settlement test of the invention is: laying a plurality of layers of geogrids to form a three-dimensional foundation settlement body through layer-by-layer foundation settlement in a vertical direction, for tending to observe foundation settlement.
In the specific implementation of the invention, when embedding metal wires in geogrids or a water channel, the metal wires should be prevented from rusting. Since there is a circuit in the system, insulating layers should be provided to protect resistance wires from being affected by moisture and other factors. Meanwhile, the metal wires, the insulating layers and the foundation are bonded together using a bonder to ensure that the small strain of the foundation can also be reflected into the system through the metal wires, thereby ensuring the accuracy of parameters.
By adopting the metal wires, the invention is simple and easy to implement. The innovation of the invention lies in applying the metal wires to the deformation measurement. By embedding the metal wires into the geogrids and applying the metal wires to the measurement of foundation settlement, the method may implement pipeline operation to facilitate large-scale use, and mainly improves the manufacturing process.
The foregoing descriptions are merely preferred embodiments of this application, but are not intended to limit this application. A person skilled in the art may make various alterations and variations to this application. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of this application shall fall within the protection scope of this application.
Claims (7)
1. A resistance-sensitive grid foundation settlement test system, the system comprising:
measuring elements which do not affect performance parameters of geogrids after being embedded, wherein the measuring elements are embedded in a transverse direction and a longitudinal direction of each grid, the measuring elements are connected in parallel, insulating layers are wrapped around the measuring elements, the insulating layers and the measuring elements are connected in a bonding manner, the insulating layers and the geogrids are connected in a bonding manner, and the geogrids embedded with the measuring elements are vertically placed with one another in sequentially overlapped layers;
each measuring element comprises a plurality of measuring element segments in series, the number of the measuring element segments is determined by the specific number of grids of the geogrid, wherein wires are led out at both ends of each of the measuring element segments, to connect an instrument for collecting a change of resistance value of the measuring element segment; and
a deformation of the measuring elements is caused by deformation of the grids due to stress to cause resistance changes of the measuring elements, the resistance changes cause changes of measuring electric signals, a monitoring point collects data and transmits the same to a cloud server communicating with a remote control center.
2. The resistance-sensitive grid foundation settlement test system according to claim 1, wherein the measuring element comprises a sensitive grid, which is made of metal foil grids having a thickness of 0.003 to 0.101 mm or metal wires.
3. A resistance-sensitive grid foundation settlement test method, comprising:
embedding measuring elements which do not affect performance parameters of geogrids in a transverse direction and a longitudinal direction of each grid; connecting insulating layers and the measuring elements in a bonding manner, and connecting the insulating layers and the geogrids in a bonding manner; placing the geogrids embedded with the measuring elements vertically with one another in sequentially overlapped layers, and dividing, within a calculated depth range, foundation settlement into a plurality of layers in a geogrid layout manner according to a layer-wise summation method; wherein, the measuring element comprises a plurality of measuring element segments in series, the number of the measuring element segments is determined by the specific number of grids of the geogrid, wherein wires are led out at both ends of each of the measuring element segments, to connect an instrument for collecting a change of resistance value of the measuring element segment; measuring the resistance of all measuring element segments at the same time, and determining a final position of each tension point after settlement according to the measured resistance during foundation settlement, so as to form a foundation settlement surface; and generating a foundation settlement surface by each soil layer, and overlapping a plurality of settlement surfaces to form a three-dimensional foundation settlement body.
4. The resistance-sensitive grid foundation settlement test method according to claim 3, wherein when the foundation settlement surface is formed, the geogrids are deformed such that the measuring elements are tensioned, a cross-sectional area is reduced, a resistance value is increased, a single measuring element cannot determine the position of the tension point, one of the tension points may be determined by two measuring elements mutually perpendicular, a plurality of metal wires mutually perpendicular may determine a plurality of tension points, and a final position of each tension point after settlement is determined according to different displacements of each of the tension points in a vertical direction, so as to form a foundation settlement surface.
5. The resistance-sensitive grid foundation settlement test method according to claim 3, wherein after the measuring elements are segmented, each small measuring element segment is regarded as a resistor, and metal segments on the same measuring element are connected in series to a circuit, are equal in current and initial resistance, and thus are equal in voltage.
6. The resistance-sensitive grid foundation settlement test method according to claim 3, wherein after a foundation is settled, due to difference of tension condition of each the measuring element segments on the same measuring element, a change of resistance of the segment is also different, measuring the voltage of each the segment respectively, to obtain a corresponding resistance change rate and displacement change value, so as to obtain the displacement of each tension point in the entire calculated depth range, that is, obtain the foundation settlement surface of each soil layer and the three-dimensional foundation settlement body.
7. The resistance-sensitive grid foundation settlement test method according to claim 3, wherein a resistance value change in a circuit caused by the deformation of the geogrids is converted into a voltage change by a switching circuit, the displacement of each tension point is collected in real time, remotely transmitted to a cloud server through a network, and received by a data dump module for data dump, a remote monitoring center receives back data in a database for data processing analysis and graphical interface display, and automatic monitoring of a foundation settlement process is finally implemented.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820155080.1 | 2018-01-30 | ||
| CN201810090682.8 | 2018-01-30 | ||
| CN201820155080 | 2018-01-30 | ||
| CN201810090682.8A CN108166547A (en) | 2018-01-30 | 2018-01-30 | Resistance value alertness grid settlement of foundation tests system and method |
| PCT/CN2018/092747 WO2019148752A1 (en) | 2018-01-30 | 2018-06-26 | Foundation settlement testing system and method adopting resistance-sensitive geogrids |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2018405759A1 AU2018405759A1 (en) | 2020-07-23 |
| AU2018405759B2 true AU2018405759B2 (en) | 2022-07-07 |
Family
ID=67477958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2018405759A Active AU2018405759B2 (en) | 2018-01-30 | 2018-06-26 | Resistance-sensitive grid foundation settlement test system and method |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2018405759B2 (en) |
| WO (1) | WO2019148752A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553623A (en) * | 2019-10-21 | 2019-12-10 | 天元建设集团有限公司 | template settlement monitoring and alarming system and construction method thereof |
| CN110991114B (en) * | 2019-12-02 | 2023-07-25 | 中冶南方工程技术有限公司 | Method for determining geogrid laying in bench back filling soil based on finite element analysis |
| CN113186899B (en) * | 2021-04-13 | 2024-06-21 | 中国电力工程顾问集团西南电力设计院有限公司 | Seepage-proofing structure design method suitable for sedimentation difference of soft soil foundation ash field reservoir area |
| CN116804546B (en) * | 2023-08-22 | 2023-11-10 | 天津市北洋水运水利勘察设计研究院有限公司 | Magnetic induction type resistor grid layered displacement monitoring method and system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000356682A (en) * | 1999-06-11 | 2000-12-26 | Tokyo Electric Power Co Inc:The | Underground displacement meter |
| KR100786219B1 (en) * | 2007-08-31 | 2007-12-17 | (주)다음기술단 | Retaining wall including wireless measurement system for safety diagnosis |
| JP5733740B2 (en) * | 2010-10-19 | 2015-06-10 | 国立研究開発法人農業・食品産業技術総合研究機構 | Landslide observation system |
| CN103727871A (en) * | 2013-12-20 | 2014-04-16 | 广西科技大学 | Resistance strain gauge |
| CN205230275U (en) * | 2015-11-21 | 2016-05-11 | 滁州职业技术学院 | Urban road earth subsidence early warning device |
| CN105756082B (en) * | 2016-03-22 | 2017-10-10 | 广州市绿化公司 | The ecological retaining wall that can be monitored in real time |
| CN107505196B (en) * | 2017-07-17 | 2019-10-01 | 河海大学 | It is a kind of can flexible operating three-dimensional soil arching effect development test device and operating method |
| CN108166547A (en) * | 2018-01-30 | 2018-06-15 | 山东大学 | Resistance value alertness grid settlement of foundation tests system and method |
| CN108317948A (en) * | 2018-01-30 | 2018-07-24 | 山东大学 | Resistance value alertness grid foundation displacement tests system and method |
-
2018
- 2018-06-26 AU AU2018405759A patent/AU2018405759B2/en active Active
- 2018-06-26 WO PCT/CN2018/092747 patent/WO2019148752A1/en active Application Filing
Non-Patent Citations (1)
| Title |
|---|
| Ast, W. et al., 'Reinforced embankment combined with a new developed warning system for high-speed trains over areas of previous mining', Proc. of the 7th International Conference on Geosynthetics, Nice, France, 22-27 Sept 2002, Pg 335-340. * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2018405759A1 (en) | 2020-07-23 |
| WO2019148752A1 (en) | 2019-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2018405759B2 (en) | Resistance-sensitive grid foundation settlement test system and method | |
| CN108166547A (en) | Resistance value alertness grid settlement of foundation tests system and method | |
| Al-Qadi et al. | The Virginia Smart Road: The impact of pavement instrumentation on understanding pavement performance | |
| KR101493231B1 (en) | Integration system for interworking seismic instrumentation and electrical resistivity monit0ring and hydraulic structure monitoring method using the same | |
| CN204731236U (en) | Steel rust in concrete risk in-situ monitoring device | |
| Zhao et al. | A direct comparison of the traditional method and a new approach in determining 220 transfer lengths in prestressed concrete railroad ties | |
| CN111042866B (en) | Multi-physical-field cooperative water inrush monitoring method | |
| CN104318004A (en) | Deformation-data-based bending moment internal force analysis method for secondary lining structure of tunnel | |
| CN103790169B (en) | Embedding rock double Miniature anti-slide pile early warning stage division | |
| CN105158300A (en) | Detection method for bridge linear steel member | |
| CN108317948A (en) | Resistance value alertness grid foundation displacement tests system and method | |
| CN103591982A (en) | Method for monitoring electric power tunnel structure problem | |
| CN104215365A (en) | Pavement structure layer internal shearing stress testing sensor and embedding technology and application thereof | |
| CN110197015B (en) | Dam foundation pre-stressed anchor cable effective tensile stress measuring method | |
| KR102090475B1 (en) | An interlocking type ground and structure settlement measuring device using angular displacement sensor and measurement method of ground and structure settlemnet using the same | |
| CN105157596B (en) | A kind of intelligent electric power comb DEFORMATION MONITORING SYSTEM | |
| CN103105308A (en) | In-situ test method for cross-fault buried pipeline | |
| EP2965124A1 (en) | A system and method for evaluating a dam state | |
| CN111733787B (en) | Method and system for detecting karst cave treatment effect in bridge pile foundation construction process | |
| CN113096360B (en) | Novel analysis monitoring method for slope fixing monitoring | |
| Shu et al. | Field destructive testing of a reinforced concrete bridge deck slab | |
| CN114858223A (en) | Building stability monitoring method based on artificial intelligence and sensor | |
| Yin et al. | Development of full-scale reflective cracking test at the FAA National Airport Pavement Test Facility | |
| CN209639695U (en) | A kind of landslide earth's surface and subterranean fracture comprehensive monitor system | |
| CN105283742A (en) | Stress history measurement method and stress sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DA3 | Amendments made section 104 |
Free format text: THE NATURE OF THE AMENDMENT IS: AMEND THE INVENTION TITLE TO READ RESISTANCE-SENSITIVE GRID FOUNDATION SETTLEMENT TEST SYSTEM AND METHOD |
|
| FGA | Letters patent sealed or granted (standard patent) |