CN112832225A - Intelligent geogrid - Google Patents
Intelligent geogrid Download PDFInfo
- Publication number
- CN112832225A CN112832225A CN202011618085.1A CN202011618085A CN112832225A CN 112832225 A CN112832225 A CN 112832225A CN 202011618085 A CN202011618085 A CN 202011618085A CN 112832225 A CN112832225 A CN 112832225A
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- China
- Prior art keywords
- optical fiber
- geogrid
- fiber sensor
- elastic members
- monitoring
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- 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.)
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- 239000013307 optical fiber Substances 0.000 claims abstract description 61
- 238000012544 monitoring process Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 12
- 239000004831 Hot glue Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000012943 hotmelt Substances 0.000 claims description 2
- 241001391944 Commicarpus scandens Species 0.000 abstract description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 22
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
-
- 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
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35338—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
- G01D5/35354—Sensor working in reflection
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0084—Geogrids
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Optical Transform (AREA)
Abstract
The invention discloses an intelligent geogrid, which comprises: the monitoring structure is fixed on the rib-shaped structure; the monitoring structure comprises an optical fiber sensor and at least two groups of elastic members; wherein the optical fiber sensor is fixed between the at least two sets of elastic members. The intelligent geogrid provided by the invention is used for solving the technical problem that the optical fiber sensor is easy to break in the processes of reeling, laying and using, so that the monitoring reliability is low in the prior art.
Description
Technical Field
The invention relates to the field of engineering materials, in particular to an intelligent geogrid.
Background
With the rapid development of the photoelectric technology and the internet of things technology, an intelligent geogrid product integrated with an optical fiber sensor is developed, the intelligent geogrid is usually used as a reinforcing frame for reinforcing a bottom layer building material of a civil engineering foundation, and has the functions of monitoring the load and flow of road vehicles and monitoring the physical state of the civil engineering foundation in real time compared with the traditional geogrid.
Although the current geogrid integrates the optical fiber sensor, the optical fiber sensor is easy to break off in the processes of reeling, laying and using, so that the monitoring reliability is not high.
Disclosure of Invention
The embodiment of the application provides an intelligence geogrid, has solved among the prior art intelligence geogrid and has reeled, lay and the in-process optical fiber sensor easy rupture of using, leads to the not high technical problem of reliability of monitoring, has realized improving optical fiber sensor's protection dynamics, and then improves the technological effect of the reliability of monitoring.
The embodiment of the application provides the following technical scheme:
the application provides an intelligence geogrid includes:
the monitoring structure is fixed on the rib-shaped structure;
the monitoring structure comprises an optical fiber sensor and at least two groups of elastic members; wherein the optical fiber sensor is fixed between the at least two sets of elastic members.
Preferably, the rib-like structure comprises longitudinal ribs and mesh ribs distributed between the longitudinal ribs.
Preferably, said monitoring structure is fixed to said longitudinal ribs of said geogrid.
Preferably, the elastic member is a spring steel wire, and the diameter of the spring steel wire is 0.8mm to 1.2 mm.
Preferably, the diameter of the optical fiber sensor is 0.4 mm-1.0 mm.
Preferably, the number of the optical fiber sensors on each longitudinal rib is N, where N is an integer greater than or equal to 1.
Preferably, the diameter of the optical fiber sensor is smaller than the diameter of the elastic member.
Preferably, the at least two groups of elastic members are parallel to each other and have a spacing of 3mm to 8mm, and the optical fiber sensor is fixed in a gap between the at least two groups of elastic members in parallel.
Preferably, the monitoring structure further comprises a hot melt adhesive layer, and the at least two groups of elastic members and the optical fiber sensor are wrapped and packaged and adhered to the longitudinal ribs through a hot melt process by the hot melt adhesive layer.
Preferably, the material of the hot melt adhesive layer is the same as the material of the rib-like structure.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
because the spring steel wires are arranged on the two sides of the optical fiber sensor, the spring steel wires share the weight load and the impact load of the optical fiber sensor in the processes of coiling, laying and using, the optical fiber is effectively protected, and the monitoring reliability is further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural view of an intelligent geogrid in an embodiment of the present application;
fig. 2 is a schematic structural diagram of an intelligent geogrid in an embodiment of the present application;
fig. 3 is a schematic cross-sectional view of a longitudinal rib in an embodiment of the present application.
Detailed Description
The embodiment of the application provides an intelligence geogrid, has solved among the prior art intelligence geogrid and has reeled, lay and the in-process optical fiber sensor easy rupture of using, leads to the not high technical problem of reliability of monitoring.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
provided is an intelligent geogrid, including:
the monitoring structure is fixed on the rib-shaped structure;
the monitoring structure comprises an optical fiber sensor and at least two groups of elastic members; wherein the optical fiber sensor is fixed between the at least two sets of elastic members.
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example one
The present application provides an intelligent geogrid, as shown in the figure, includes:
a rib structure 1010 and a monitoring structure 1020, wherein the monitoring structure 1020 is fixed on the rib structure 1010;
the monitoring structure 1020 comprises a fiber sensor 1021 and at least two sets of elastic members 1022; wherein the fiber sensor 1020 is fixed between the at least two sets of elastic members 1022.
In a specific implementation, the rib-like structure 1010 is composed of longitudinal ribs 201 and mesh ribs 202 located between the longitudinal ribs as shown in fig. 2. In the actual production process, the polypropylene punched plate can be used for manufacturing the longitudinal ribs and the reticular ribs positioned between the longitudinal ribs by one-step forming through longitudinal and transverse hot stretching. Of course, other materials, such as glass fiber, high strength polyester fiber, and steel-plastic composite material, may be used for the rib structure 1010 according to different applications and protection levels, which are not limited herein and are not listed. In addition, the mesh ribs can be made into rectangles, diamonds, triangles, hexagons and the like according to actual requirements, and are not limited herein. The mesh ribs of the present embodiment are rectangular as shown in fig. 2.
The monitoring structure 1020 is fixed on a longitudinal rib of the rib-like structure, comprising optical fiber sensors 1021 and at least two sets of elastic members 1022, wherein the optical fiber sensors 1020 are fixed between the at least two sets of elastic members 1022. In a specific application, the optical fiber sensor 1020 is covered with a nylon sheath to protect the optical fiber sensor therein, and the elastic member 1022 may be a spring steel wire, an elastic rubber band, rubber, or other devices having both elasticity and a certain mechanical strength, which is not limited herein.
In practical application, the width of the intelligent geogrid is generally 1.5m to 5m, the length of each roll is 50 meters to 100 meters, each roll is overlapped with each other through an optical fiber connector during laying, and optical fiber sensors in the same roll of the geogrid can be connected in series through the optical fiber connectors or other optical sensors, so that a grid-shaped or S-shaped monitoring network is formed. Because the optical fiber sensor is arranged between the elastic members, and the elastic members have elastic characteristics, the shearing strength of the optical fiber sensor is dozens of times of that of the optical fiber sensor, so that the optical fiber sensor can be effectively protected by strong force, and the optical fiber can be prevented from being broken.
In a specific embodiment, the structure of the smart geogrid can be as shown in fig. 2, the width of the geogrid is 1.5m, the length of the geogrid is 100m, and two longitudinal ribs are arranged on each roll. Two spring steel wires 203 and an optical fiber sensor 204 are respectively fixed on each longitudinal rib, the two spring steel wires are fixed on the longitudinal ribs in parallel, the optical fiber sensor is fixed between the two spring steel wires, preferably, each spring steel wire is formed by twisting two strands of basic spring steel wires, the protection strength of the optical fiber sensor is guaranteed, the cost is also considered, and more than two strands of basic spring steel wires can be twisted according to the requirement of the protection strength without limitation. In a specific implementation process, the spring steel wires are subjected to heat treatment and surface treatment, each diameter is 0.8-1.2 mm, the gap between the two spring steel wires on the same longitudinal rib is 3-8 mm, the optical fiber sensor is arranged in the gap between the two spring steel wires, the diameter is 0.4-1.0 mm, it needs to be stated that the diameter of the optical fiber sensor is smaller than the diameter of the two spring steel wires, so that the two spring steel wires can share most of radial bending shear stress on the optical fiber sensor, and effective protection is formed on the optical fiber sensor.
In a preferred fixing manner, the spring steel wires and the optical fiber sensors are packaged and fixed on the longitudinal ribs of the geogrid by using a hot melting process, and considering the bonding effect with the rib-shaped structure, the hot melting material may be selected from the same material as the rib-shaped structure, in this embodiment, the hot melting material is selected from polypropylene, and in a specific implementation process, other hot melting materials, such as polyethylene, polyvinyl chloride, and the like, may also be selected, without limitation. After the fixing operation is completed, the spring steel wire and the optical fiber sensor are packaged and wrapped in the hot melt adhesive layer, the hot melt adhesive layer is bonded on the longitudinal rib and is integrated with the longitudinal rib, as shown in fig. 3, the cross section of the longitudinal rib after the fixing operation is completed is shown, 3010 is the longitudinal rib, 3040 is the hot melt adhesive layer, the optical fiber sensor 3020 and the spring steel wires 303a and 303b are packaged in the hot melt adhesive layer 3040 and are adhered to the longitudinal rib 3010 together with the hot melt adhesive layer 3040.
In addition, in a specific implementation process, a plurality of optical fiber sensors can be arranged on each longitudinal rib according to different monitoring purposes, for example, in an intelligent geogrid for road reinforcement, two optical fiber sensors can be arranged at the same time, and the two optical fiber sensors are respectively arranged on the longitudinal ribs and have certain intervals with each other so as to avoid friction damage. One of the optical fiber sensors is used for monitoring the road load condition, and the other optical fiber sensor is used for monitoring the stability of the road structure, such as whether displacement is generated or not, and whether the road sinks or does not slide on the side slope or not. In addition, more than two groups of spring steel wires for protecting the optical fiber sensor can be arranged to enhance the protection strength, for example, in an intelligent geogrid applied to slope protection on two sides of a mountain road, because the mountain is far away and the road condition is complex, if the optical fiber sensor cannot be effectively monitored, manual timing monitoring and maintenance are needed, the cost is high, and therefore the requirement for the monitoring reliability of the optical fiber sensor is higher.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
because the spring steel wires are arranged on the two sides of the optical fiber sensor, the spring steel wires share the weight load and the impact load of the optical fiber sensor in the processes of coiling, laying and using, the optical fiber is effectively protected, and the monitoring reliability is further improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An intelligent geogrid, comprising:
the monitoring structure is fixed on the rib-shaped structure;
the monitoring structure comprises an optical fiber sensor and at least two groups of elastic members; wherein the optical fiber sensor is fixed between the at least two sets of elastic members.
2. The geogrid according to claim 1, wherein the rib-like structure includes longitudinal ribs and mesh ribs distributed between the longitudinal ribs.
3. The geogrid according to claim 2, wherein the monitoring structure is fixed to the longitudinal ribs of the geogrid.
4. The geogrid according to claim 1, wherein the elastic member is a spring wire having a diameter of 0.8mm to 1.2 mm.
5. The geogrid according to claim 1, wherein the optical fiber sensor has a diameter of 0.4mm to 1.0 mm.
6. The geogrid according to claim 1, wherein the number of the optical fiber sensors on each of the longitudinal ribs is N, N being an integer greater than or equal to 1.
7. The geogrid of claim 1, wherein the diameter of the optical fiber sensor is smaller than the diameter of the elastic member.
8. The geogrid according to claim 1, wherein the at least two groups of elastic members are parallel to each other and have a spacing of 3mm to 8mm, and the optical fiber sensors are fixed in parallel in a gap between the at least two groups of elastic members.
9. The geogrid according to claim 1, wherein the monitoring structure further comprises a hot melt adhesive layer, and the hot melt adhesive layer encapsulates and adheres the at least two groups of elastic members and the optical fiber sensors to the longitudinal ribs through a hot melt process.
10. The geogrid of claim 9, wherein the material of the hot melt adhesive layer is the same as the material of the rib structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011618085.1A CN112832225A (en) | 2020-12-31 | 2020-12-31 | Intelligent geogrid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011618085.1A CN112832225A (en) | 2020-12-31 | 2020-12-31 | Intelligent geogrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112832225A true CN112832225A (en) | 2021-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011618085.1A Pending CN112832225A (en) | 2020-12-31 | 2020-12-31 | Intelligent geogrid |
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| Country | Link |
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| CN (1) | CN112832225A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739450A (en) * | 2022-03-18 | 2022-07-12 | 哈尔滨工业大学 | Composite intelligent geogrid suitable for cold region roadbed and monitoring and early warning method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995619A (en) * | 2012-12-28 | 2013-03-27 | 泰安路德工程材料有限公司 | Highly smart LDTG composite geotechnical material and engineering monitoring system thereof |
| CN103469782A (en) * | 2013-09-23 | 2013-12-25 | 山东浩珂矿业工程有限公司 | Fiber bragg grating compound dacron geogrid and preparation method thereof |
| CN110258226A (en) * | 2019-07-08 | 2019-09-20 | 深圳大学 | The intelligent TGXG captured for road reinforcement, pavement monitoring, traffic information |
-
2020
- 2020-12-31 CN CN202011618085.1A patent/CN112832225A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995619A (en) * | 2012-12-28 | 2013-03-27 | 泰安路德工程材料有限公司 | Highly smart LDTG composite geotechnical material and engineering monitoring system thereof |
| CN103469782A (en) * | 2013-09-23 | 2013-12-25 | 山东浩珂矿业工程有限公司 | Fiber bragg grating compound dacron geogrid and preparation method thereof |
| CN110258226A (en) * | 2019-07-08 | 2019-09-20 | 深圳大学 | The intelligent TGXG captured for road reinforcement, pavement monitoring, traffic information |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739450A (en) * | 2022-03-18 | 2022-07-12 | 哈尔滨工业大学 | Composite intelligent geogrid suitable for cold region roadbed and monitoring and early warning method |
| CN114739450B (en) * | 2022-03-18 | 2024-05-28 | 哈尔滨工业大学 | Combined intelligent geogrid suitable for roadbed in cold area and monitoring and early warning method |
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Application publication date: 20210525 |