journal article·2021-01-04Open access

An Application of BOTDR to the Measurement of the Curing of a Bored Pile

Lei Gao, Chuan Han, Omar Abdulhafidh, Yunhao Gong, Yingjie Jin

Applied Sciences· Volume 11· Issue 1

Abstract

In order to study the deformation of a bored pile during concrete curing, it is necessary to monitor the strain of the pile. In this paper, Brillouin optical time domain reflectometer (BOTDR) technology is used to monitor the pile strain during concrete curing, and reliable monitoring data are obtained. These data provide a basis for the study of pile deformation and pile–soil interaction during curing of bored cast-in-place piles. Compared with the traditional point strain sensor, the distributed fiber optic sensor is simple in layout and highly accurate; it can fully reflect the strain changes of the pile; the experiment also shows the advantages of distributed fiber optic sensing technology over the traditional point monitoring method.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Advanced Fiber Optic Sensors · Geotechnical Engineering and Underground Structures · Photonic and Optical Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210024, China

References (29)

Show source-provided references
1. Field experiment on hydration effect of backfill bored cast-in-place pile and concrete bearing platform
2. Field test of influence of concrete hydration on thermodynamic characteristics of pile group
3. Axial temperature field and strain test of bored pile in sandy soil foundation
4. Analysis on the influence of hydration heat on pile foundation heat in permafrost region
5. Early-age cracking in reconstructed concrete bridge barrier walls
6. Early age stresses and creep-shrinkage interaction of restrained concrete
7. Study on the hydration heat of binder paste in high-performance concrete10.1016/S0008-8846(02)00810-4 ↗
8. Impact of molding temperature and hydration heat of concrete on thermal properties of pile foundation in permafrost regions along the Qinghai-Tibet DC Transmission Line
9. Study on thermal regime of high-temperature frozen soil while construction of cast-in-place pile
10. Influences of refreezing process ofground on bearing capacity of single pile and bridge construction in permafrost
11. Experiment Study on Deformation Monitoring of Bored Pile Based on BOTDR10.3390/app9122435 ↗
12. Single-end simultaneous temperature and strain sensing techniques based on Brillouin optical time domain reflectometry in few mode fibers10.1364/OE.23.009024 ↗
13. Signal processing technique for distributed Brillouin sensing at centimeter spatial resolution10.1109/JLT.2007.906796 ↗
14. Review of the present status of optical fiber sensors10.1016/S1068-5200(02)00527-8 ↗
15. Study on the deformation measurement of the cast-in-place large-diameter pile using Fiber Bragg Grating Sensors10.3390/s17030505 ↗
16. The BOTDR-Based Strain Monitoring for Tunnel
17. Development of a Distributed Sensing Technique Using Brillouin Scattering10.1109/50.400684 ↗
18. System for measuring temperature and strain separately by BOTDR and OTDR
19. Recent progress of using Brillouin distributed fiber optic sensors for geotechnical health monitoring10.1016/j.sna.2017.03.017 ↗
20. A kinematic method for calculating shear displacements of landslides using distributed fiber optic strain measurements10.1016/j.enggeo.2018.01.002 ↗
21. Damage and nonlinearities detection in wind turbine blades based on strain field pattern recognition. FBGs, OBR and strain gauges comparison10.1016/j.compstruct.2015.08.137 ↗
22. Wang, Y.T., Zheng, L.J., Hou, P.G., and Hu, C.H. (2003). Optoelectronics and Fiber Optic Sensing Technology, National Defense Industry Press.
23. Wavelet packet multi threshold denoising method and its application in deformation analysis
24. Characteristics and Application of BOTDR in Distributed Detection of Pile Foundation10.4028/www.scientific.net/AMR.163-167.2657 ↗
25. Feasibility study on corrosion monitoring of a concrete column with central rebar using BOTDR10.12989/sss.2014.13.1.041 ↗
26. Performance Monitoring of a Secant-Piled Wall Using Distributed Fiber Optic Strain Sensing10.1061/(ASCE)GT.1943-5606.0000543 ↗
27. Restraint stress and stress relaxation in concrete at early ages
28. Quantification of effects of fly ash type on concrete early-age cracking
29. Reducing thermal and autogenous shrinkage contributions to early-age cracking