CN211013221U - Distributed sensing optical fiber layout structure in concrete construction monitoring process - Google Patents
Distributed sensing optical fiber layout structure in concrete construction monitoring process Download PDFInfo
- Publication number
- CN211013221U CN211013221U CN201922282803.1U CN201922282803U CN211013221U CN 211013221 U CN211013221 U CN 211013221U CN 201922282803 U CN201922282803 U CN 201922282803U CN 211013221 U CN211013221 U CN 211013221U
- Authority
- CN
- China
- Prior art keywords
- sensing optical
- optical fiber
- ring
- bar support
- steel bar
- 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
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses a layout structure of distributed sensing optical fibers in a concrete construction monitoring process, which comprises a steel bar support arranged in a square pile pouring area, wherein the steel bar support forms four vertical surfaces, and one sensing optical fiber is continuously arranged on the four vertical surfaces; the sensing optical fibers are arranged on the four vertical surfaces through a plurality of steel wire rings; the sensing optical fiber is led in at the lower end of the pouring area on each vertical surface, is bent in a reciprocating manner, extends upwards to the upper end of the pouring area, and then extends downwards to the lower end to be led out; by adopting the technical scheme, the sensing optical fibers are arranged on each vertical surface and are led out or led in at the lower end of the pouring area, so that the sensing optical fibers are close to the steel bar support, and the sensing optical fibers are convenient to install.
Description
Technical Field
The utility model belongs to the technical field of the concrete construction, concretely relates to distributing type sensing optical fiber lays structure in concrete construction monitoring process.
Background
Distributed optical fiber sensing technology is mainly based on reflection and interference of light, and sensing is performed by using light scattering or nonlinear effect in an optical fiber to change with external environment. According to different detected optical signals, the distributed optical fiber sensing technology is divided into three types based on Rayleigh scattering, Raman scattering and Brillouin scattering in optical fibers; according to the signal analysis method, the distributed optical fiber sensing technology can be divided into a time domain-based distributed optical fiber sensing technology and a frequency domain-based distributed optical fiber sensing technology. In a distributed optical fiber sensing system, an optical fiber is both an information transmission medium and a signal sensing unit. In the system, the whole optical fiber is a sensing unit, and sensing points are continuously distributed, so that the sensing method can measure information at any position along the optical fiber. With the development of optical devices and signal processing technologies, the maximum sensing range of a distributed optical fiber sensing system reaches dozens of kilometers to hundreds of kilometers, and even tens of thousands of kilometers. The research and application of the distributed optical fiber sensing technology have been paid high attention, and the distributed optical fiber sensing technology is currently an important research direction of the sensing technology.
Based on the characteristics, the distributed optical fiber sensing technology is particularly suitable for monitoring parameters such as temperature, vibration and stress of the concrete structure. The distributed optical fiber sensing technology can monitor all-round health parameters of the concrete structure in the whole life cycle of the concrete structure, and can monitor the temperature change condition, the pressure-bearing load condition and the vibration deformation condition of the concrete structure, and concrete structure cracks and defects caused by environmental erosion, material aging and the like.
Due to the difference of the concrete structure forms, the arrangement mode of the reinforcing steel bar supports in the concrete, the assembly and arrangement mode of the concrete templates and the concrete pouring and vibrating mode are different. These differences affect the way in which the distributed optical fiber cable is laid in concrete construction monitoring. For example, in the construction process of a cylindrical cast-in-place pile, the sensing optical fibers can be fixed on a steel bar support in a multi-point fixing manner by using a steel wire ring, and the sensing optical fibers are arranged in a spiral ascending manner, but in the construction process of a cast-in-place pile of a square column structure, as shown in fig. 1 and 2, a steel bar support 1 is arranged in a casting area of the square pile, the steel bar support forms four vertical surfaces 1a, if the sensing optical fibers 2 are still arranged in the spiral ascending manner, the curvature radius of the sensing optical fibers 2 cannot be too small, so that the sensing optical fibers at the corners 1b of the square pile are far from the steel bar support 1, on one hand, the sensing optical fibers are not easy to fix at the position, on the other hand, vibration is needed during casting, and the sensing optical fibers are far from the steel bar support if the sensing optical fibers are far from the steel bar support, the vibration is easy to be uneven.
Disclosure of Invention
In order to solve the problem, the utility model discloses a distributing type sensing optical fiber lays structure in concrete construction monitoring process, simple to operate, monitoring effect is good.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a distributed sensing optical fiber layout structure in a concrete construction monitoring process comprises a steel bar support arranged in a square pile pouring area, wherein the steel bar support forms four vertical surfaces, and one sensing optical fiber is continuously arranged on the four vertical surfaces; the sensing optical fibers are arranged on the four vertical surfaces through a plurality of steel wire rings; and the sensing optical fiber is led in at the lower end of the pouring area on each vertical surface, is bent in a reciprocating manner, extends upwards to the upper end of the pouring area, and then vertically extends downwards to the lower end to be led out.
The sensing optical fiber is a vibration sensing optical fiber.
The steel wire ring comprises a first ring, a second ring and a third ring which are sequentially buckled, the first ring is sleeved on the steel bar support, the second ring can move on the first ring, and the sensing optical fiber penetrates through the third ring.
The sensing fiber is in interference fit with the third ring.
The first ring is arranged at the intersection position of two reinforcing steel bars which are arranged in a mutually-crossed manner of the reinforcing steel bar support and is used for sleeving the two reinforcing steel bars.
The utility model has the advantages that:
1. the sensing optical fibers are arranged on each vertical surface and are led out or led in at the lower end of the pouring area, so that the sensing optical fibers are close to the steel bar support, and the sensing optical fibers are convenient to install;
2. the sensing optical fiber cannot obstruct the vibration of the corner of the square pile;
3. sensing optical fiber is vibration sensing optical fiber to install through the steel wire ring with steel bar support, the second ring in the steel wire ring is swing joint with first ring relatively, so the sensing optical fiber of this position is not firmly fixed on steel bar support, consequently when the vibrating rod carries out the operation of vibrating, thereby vibration sensing optical fiber also can receive the vibration influence at this position and carry out vibration monitoring.
Drawings
Fig. 1 is a schematic view of the present invention.
Fig. 2 is a schematic diagram of the arrangement of sensing optical fibers on one vertical surface of the steel bar support.
Fig. 3 is a schematic diagram of a steel bar support of a square pile provided with a spiral lifting type sensing optical fiber.
Fig. 4 is a top view of fig. 1.
Fig. 5 is a schematic view of the installation structure of the wire ring.
List of reference numerals:
the steel bar support comprises a steel bar support 1, a vertical surface 1a, a sensing optical fiber 2, a steel wire ring 3, a first ring 31, a second ring 32, a third ring 33 and steel bars 10.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and embodiments, which are to be understood as illustrative only and not limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in the drawings, the layout structure of the distributed sensing optical fiber in the concrete construction monitoring process of the utility model comprises a steel bar support 1 (for convenient observation, only vertical part steel bars are drawn in the drawing) arranged in a square pile pouring area, wherein the steel bar support 1 forms four vertical surfaces 1a, and one sensing optical fiber 2 is continuously arranged on the four vertical surfaces 1 a; the sensing optical fibers 2 are arranged on the four vertical surfaces 1a through a plurality of steel wire rings 3; on each vertical surface 1a, the sensing optical fiber 2 is led in at the lower end of the casting area and bends back and forth to extend upwards to the upper end of the casting area and then vertically extend downwards to the lower end to be led out of the vertical surface.
The sensing optical fiber 2 is a vibration sensing optical fiber.
The steel wire ring 3 comprises a first ring 31, a second ring 32 and a third ring 33 which are sequentially buckled, the first ring 31 is sleeved on the steel bar support 1, the second ring 32 can move on the first ring 31, and the sensing optical fiber 2 passes through the third ring 33 and is in interference fit with the third ring 33.
The first ring 31 is disposed at a crossing point of two reinforcing bars 10 of the reinforcing bar support 1, which are arranged to cross each other, and the two reinforcing bars 10 are inserted therein.
The technical means disclosed in the present invention is not limited to the technical means disclosed in the above embodiments, but also includes the technical solution formed by combining the above technical features at will.
Claims (5)
1. The utility model provides a structure of laying of distributed sensing optical fiber in concrete construction monitoring process which characterized in that: the method comprises a steel bar support arranged in a square pile pouring area, wherein the steel bar support forms four vertical surfaces, and a sensing optical fiber is continuously arranged on the four vertical surfaces; the sensing optical fibers are arranged on the four vertical surfaces through a plurality of steel wire rings; and the sensing optical fiber is led in at the lower end of the pouring area on each vertical surface, is bent in a reciprocating manner, extends upwards to the upper end of the pouring area, and then vertically extends downwards to the lower end to be led out.
2. The arrangement structure of the distributed sensing optical fiber in the concrete construction monitoring process according to claim 1, characterized in that: the sensing optical fiber is a vibration sensing optical fiber.
3. The arrangement structure of the distributed sensing optical fiber in the concrete construction monitoring process according to claim 2, characterized in that: the steel wire ring comprises a first ring, a second ring and a third ring which are sequentially buckled, the first ring is sleeved on the steel bar support, the second ring can move on the first ring, and the sensing optical fiber penetrates through the third ring.
4. The arrangement structure of the distributed sensing optical fiber in the concrete construction monitoring process according to claim 3, characterized in that: the sensing fiber is in interference fit with the third ring.
5. The arrangement structure of the distributed sensing optical fiber in the concrete construction monitoring process according to claim 3, characterized in that: the first ring is arranged at the intersection position of two reinforcing steel bars which are arranged in a mutually-crossed manner of the reinforcing steel bar support and is used for sleeving the two reinforcing steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922282803.1U CN211013221U (en) | 2019-12-18 | 2019-12-18 | Distributed sensing optical fiber layout structure in concrete construction monitoring process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922282803.1U CN211013221U (en) | 2019-12-18 | 2019-12-18 | Distributed sensing optical fiber layout structure in concrete construction monitoring process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211013221U true CN211013221U (en) | 2020-07-14 |
Family
ID=71473463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922282803.1U Active CN211013221U (en) | 2019-12-18 | 2019-12-18 | Distributed sensing optical fiber layout structure in concrete construction monitoring process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211013221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530109A (en) * | 2021-07-16 | 2021-10-22 | 上海市建筑装饰工程集团有限公司 | Luminous wall surface and construction method thereof |
-
2019
- 2019-12-18 CN CN201922282803.1U patent/CN211013221U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530109A (en) * | 2021-07-16 | 2021-10-22 | 上海市建筑装饰工程集团有限公司 | Luminous wall surface and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mohamad et al. | Behaviour of an old masonry tunnel due to tunnelling-induced ground settlement | |
| Webb et al. | Categories of SHM deployments: Technologies and capabilities | |
| CN103669429B (en) | Based on the circular solids concrete pile pile strain monitoring method of FBG sensor | |
| CN201438141U (en) | Bridge dynamic deflection test device | |
| CN110702261A (en) | Concrete hydration heat real-time monitoring system and method | |
| US20210222375A1 (en) | Modular pavement slab | |
| WO2020044655A1 (en) | Utility-pole deterioration detection system, utility-pole deterioration detection device, utility-pole deterioration detection method, and non-transitory computer readable medium | |
| CN203732039U (en) | Integrated temperature self-compensation fiber raster strain sensor | |
| CN211013221U (en) | Distributed sensing optical fiber layout structure in concrete construction monitoring process | |
| CN103791850A (en) | Temperature-self-compensating-integrated fiber bragg grating strain transducer and method for monitoring cable force of inhaul cable through integrated temperature self-compensating fiber bragg grating strain transducer | |
| CN106885529A (en) | A kind of long-distance distributed optical fiber spatial attitude monitors sensor and engineering implementation method | |
| CN102995669B (en) | Large-tonnage foundation pile uplift-resistant static test connection device, loading counter-force system and method | |
| EP3314202B1 (en) | Method for measuring the displacement profile of buildings and sensor therefor | |
| JP2018159927A (en) | Flat profile optical fiber cable for distributed sensing applications | |
| CN102252956A (en) | Distributed optical fiber rust sensor with non-interference with rust interface | |
| Buda-Ożóg et al. | Distributed fibre optic sensing: Reinforcement yielding strains and crack detection in concrete slab during column failure simulation | |
| JP2016102691A (en) | Optical fiber bent shape measurement device and bent shape measurement method therefor | |
| CN110725347A (en) | Real-time detection method and system for broken pile in concrete cast-in-place pile construction process | |
| CN110696179A (en) | Method for laying concrete sensing optical fiber | |
| JP3457894B2 (en) | Optical fiber laying method and strain detecting device using optical fiber | |
| CN110849719B (en) | Monitoring method for compression and tensile deformation of stress rod piece based on optical fiber sensing technology | |
| CN106770481B (en) | Bridge sling monitoring sensor | |
| CN106400682B (en) | Force-measuring type plate rubber support based on optical fiber deformation sensor | |
| CN210862556U (en) | Bridge dynamic deflection monitoring system based on distributed optical fibers | |
| CN207317990U (en) | The cable force measurement device of low frequency micro breadth oscillation drag-line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231011 Address after: 139 Pingjiang Road, Xuhui District, Shanghai Patentee after: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee after: NO.3 ENGINEERING CO., LTD. OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Address before: No.1402 Gulou Road, Nanjing City, Jiangsu Province Patentee before: NANJING BRANCH OF CCCC THIRD HARBOR ENGINEERING CO.,LTD. Patentee before: NO.3 ENGINEERING CO., LTD. OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right |