Smart Structures and Systems

  • 제9권5호
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  • Pages.393-410
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  • 2012
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

An optical fibre monitoring system for evaluating the performance of a soil nailed slope

  • Zhu, Hong-Hu (School of Earth Sciences and Engineering, Nanjing University) ;
  • Ho, Albert N.L. (Ove Arup & Partners Hong Kong Limited) ;
  • Yin, Jian-Hua (Department of Civil and Structural Engineering, The Hong Kong Polytechnic University) ;
  • Sun, H.W. (Geotechnical Engineering Office, Civil Engineering and Development Department, Government of the Hong Kong Special Administrative Region) ;
  • Pei, Hua-Fu (Department of Civil and Structural Engineering, The Hong Kong Polytechnic University) ;
  • Hong, Cheng-Yu (Department of Civil and Structural Engineering, The Hong Kong Polytechnic University)
  • 투고 : 2010.10.11
  • 심사 : 2012.03.03
  • 발행 : 2012.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

Conventional geotechnical instrumentation techniques available for monitoring of slopes, especially soil-nailed slopes have limitations such as electromagnetic interference, low accuracy, poor longterm reliability and difficulty in mounting a series of strain sensors on a soil nail bar with a small-diameter. This paper presents a slope monitoring system based on fibre Bragg grating (FBG) sensing technology. This monitoring system is designed to perform long-term monitoring of slope movements, strains along soil nails, and other slope reinforcement elements. All these FBG sensors are fabricated and calibrated in laboratory and a trial of this monitoring system has been successfully conducted on a roadside slope in Hong Kong. As part of the slope stability improvement works, soil nails and a toe support soldier-pile wall were constructed. During the slope works, more than 100 FBG sensors were installed on a soil nail, a soldier pile, and an in- place inclinometer. The paper presents the layout and arrangement of the instruments as well as the installation procedures adopted. Monitoring data have been collected since March 2008. This trial has demonstrated the great potential of the optical fibre monitoring system for long-term monitoring of slope performance. The advantages of the slope monitoring system and experience gained in the field implementation are also discussed in the paper.

키워드

참고문헌

  1. Ding, X.L., Huang, D.F., Yin, J.H., Chen, Y.Q., Lau, C.K., Yang, Y.W., Sun, Y.R., Chen, W. and He, X.F. (2003), "Development and field testing of a multi-antenna GPS system for deformation monitoring", Wuhan Univ. J. Nat. Sci., 8(2), 671-676. https://doi.org/10.1007/BF02899833
  2. Dunnicliff, J. (1993), Geotechnical instrumentation for monitoring field performance, John Wiley & Sons Inc, New York.
  3. Fredlund, D.G. and Rahardjo, H. (1993), Soil mechanics for unsaturated soils, John Wiley & Sons Inc, New York.
  4. Kersey, A.D., Davis, M.A., Patrick, H.J., LeBlanc, M., Koo, K.P. Askins, C.G., Putnam, M.A. and Friebele, E.J. (1997), "Fiber grating sensors", J. Lightwave Technol., 15(8), 1442-1463. https://doi.org/10.1109/50.618377
  5. Gasmo, J., Hritzuk, K.J., Rahardjo, H. and Leong, E.C. (1999), "Instrumentation of an unsaturated residual soil slope", Geotech. Test. J., 22(2), 128-137.
  6. Hill, K.O., Fujii, Y., Johnson, D.C. and Kawasaki, B.S. (1978), "Photosensitivity in optical fiber waveguides: application to reflection filter fabrication", Appl. Phys. Lett., 32(10), 647-649. https://doi.org/10.1063/1.89881
  7. Ho, Y.T., Huang, A.B. and Lee, J.T. (2006), "Development of a fibre Bragg grating sensored ground movement monitoring system", Meas. Sci. Technol., 17(7), 1733-1740. https://doi.org/10.1088/0957-0233/17/7/011
  8. Inaudi, D. (1997), Fiber optic sensor network for the monitoring of civil engineering structures, PhD Thesis, EPFL, Lausanne, Switzerland.
  9. Li, A.G., Yue, Z.Q., Tham, L.G., Lee, C.F. and Law, K.T. (2005), "Field-monitored variations of soil moisture and matric suction in a saprolite slope", Can. Geotech. J., 42(1), 13-26. https://doi.org/10.1139/t04-069
  10. Lin, C.P. and Tang, S.H. (2005). "Development and calibration of a TDR extensometer for geotechnical monitoring", Geotech. Test. J., 28(5), 1-8.
  11. Millis, S.W., Ho, A.N.L., Chan, E.K.K., Lau, K.W.K. and Sun, H.W. (2008), "Instrumentation and real time monitoring of slope movement in Hong Kong", Proceedings of the12th International Conference of International Association for Computer Methods and Advances in Geomechanics, Goa, India.
  12. Morey, W.W., Meltz, G. and Glenn, W.H. (1989), "Fiber optic bragg grating sensors", Proceedings of the SPIE.
  13. Ng, C.W.W., Zhan, L.T., Bao, C.G., Fredlund, D.G. and Gong, B.W. (2003), "Performance of an unsaturated expansive soil slope subjected to artificial rainfall infiltration", Geotechnique, 53(2), 143-157. https://doi.org/10.1680/geot.2003.53.2.143
  14. Peyret, M., Djamour, Y., Rizza, M., Ritz, J.F., Hurtrez, J.E., Goudarzi, M.A., Nankali, H., Chery, J., Le Dortz, K. and Uri, F. (2008), "Monitoring of the large slow Kahrod landslide in Alborz mountain range (Iran) by GPS and SAR interferometry", Eng. Geol., 100(3-4), 131-141. https://doi.org/10.1016/j.enggeo.2008.02.013
  15. Wong, H.N., Ho, K.K.S. and Sun, H.W. (2006), "The role of slope instrumentation in landslide risk management- Hong Kong experience", Proceedings of the Conference on Landslide, Sinkhole, Ipoh, Malaysia.
  16. Yin, J.H., Ding, X.L., Yang, Y.W., Lau, C.K., Huang, D.F. and Chen, Y.Q. (2004), "Integration of conventional instruments and global positioning system for automatic monitoring of slopes", Chin. J. Rock Mech. Eng., 23(3), 357-364. (in Chinese)
  17. Yoshida, Y., Kashiwai, Y., Murakami, E., Ishida, S. and Hashiguchi, N. (2002), "Development of the monitoring system for slope deformations with fiber Bragg grating arrays", Proceedings of the SPIE.
  18. Zhang, T.L.T., Ng, C.W.W. and Fredlund, D.G. (2006), "Instrumentation of an unsaturated expansive soil slope", Geotech. Test. J., 30(2), 1-11.

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  1. Experimental investigation of pavement behavior after embankment widening using a fiber optic sensor network vol.14, pp.1, 2015, https://doi.org/10.1177/1475921714548935
  2. Experimental study on pullout performance of sensing optical fibers in compacted sand vol.73, 2015, https://doi.org/10.1016/j.measurement.2015.05.027
  3. Fiber Bragg grating-based performance monitoring of a slope model subjected to seepage vol.23, pp.9, 2014, https://doi.org/10.1088/0964-1726/23/9/095027
  4. Acceleration Characteristics of a Rock Slide Using the Particle Image Velocimetry Technique vol.2016, 2016, https://doi.org/10.1155/2016/2650871
  5. Blind Source Separation Model of Earth-Rock Junctions in Dike Engineering Based on Distributed Optical Fiber Sensing Technology vol.2015, 2015, https://doi.org/10.1155/2015/281538
  6. Experiment study on constraint condition of distributed sensing optical fiber in deformation measure of soil vol.61, 2017, https://doi.org/10.1088/1755-1315/61/1/012130
  7. Techno-economical and practical considerations for SHM systems vol.7, pp.2, 2017, https://doi.org/10.1007/s13349-017-0215-x
  8. Application of FBG Sensing Technology in Stability Analysis of Geogrid-Reinforced Slope vol.17, pp.3, 2017, https://doi.org/10.3390/s17030597
  9. Slope Stability Analysis Based on Measured Strains along Soil Nails Using FBG Sensing Technology vol.2013, 2013, https://doi.org/10.1155/2013/561360
  10. FBG-Based Monitoring of Geohazards: Current Status and Trends vol.17, pp.3, 2017, https://doi.org/10.3390/s17030452
  11. Performance evaluation of soil-embedded plastic optical fiber sensors for geotechnical monitoring vol.17, pp.2, 2016, https://doi.org/10.12989/sss.2016.17.2.297
  12. A Study on Distribution Measurement and Mechanism of Deformation due to Water Loss of Overburden Layer in Vertical Shaft vol.2015, 2015, https://doi.org/10.1155/2015/531428
  13. Interfacial characterization of soil-embedded optical fiber for ground deformation measurement vol.23, pp.9, 2014, https://doi.org/10.1088/0964-1726/23/9/095022
  14. Deformation reconstruction of a smart Geogrid embedded with fiber Bragg grating sensors vol.26, pp.12, 2015, https://doi.org/10.1088/0957-0233/26/12/125202
  15. Three dimensional seismic and static stability of rock slopes vol.8, pp.1, 2015, https://doi.org/10.12989/gae.2015.8.1.097
  16. Introduction to an FBG-based inclinometer and its application to landslide monitoring vol.5, pp.5, 2015, https://doi.org/10.1007/s13349-015-0129-4
  17. Model testing of the response of stabilizing piles in landslides with upper hard and lower weak bedrock vol.204, 2016, https://doi.org/10.1016/j.enggeo.2016.02.002
  18. Distributed acquisition, characterization and process analysis of multi-field information in slopes vol.182, 2014, https://doi.org/10.1016/j.enggeo.2014.08.025
  19. A novel optimal plane arrangement of stabilizing piles based on soil arching effect and stability limit for 3D colluvial landslides vol.195, 2015, https://doi.org/10.1016/j.enggeo.2015.06.018
  20. Quantitative Sensitivity Analysis of Surface Attached Optical Fiber Strain Sensor vol.14, pp.6, 2014, https://doi.org/10.1109/JSEN.2014.2303145
  21. Quantitative Evaluation of Optical Fiber/Soil Interfacial Behavior and Its Implications for Sensing Fiber Selection vol.15, pp.5, 2015, https://doi.org/10.1109/JSEN.2014.2386881
  22. Internal Deformation Monitoring of Slope Based on BOTDR vol.2016, 2016, https://doi.org/10.1155/2016/9496285
  23. Application ofR/SMethod for Dynamic Analysis of Additional Strain and Fracture Warning in Shaft Lining vol.2015, 2015, https://doi.org/10.1155/2015/376498
  24. Numerical modeling of soil nail walls considering Mohr Coulomb, hardening soil and hardening soil with small-strain stiffness effect models vol.6, pp.4, 2014, https://doi.org/10.12989/gae.2014.6.4.391
  25. Study of Three-Component FBG Vibration Sensor for Simultaneous Measurement of Vibration, Temperature, and Verticality vol.2015, 2015, https://doi.org/10.1155/2015/382865
  26. Reliability of long-term monitoring data vol.4, pp.1, 2014, https://doi.org/10.1007/s13349-013-0047-2
  27. Evaluations of load-deformation behavior of soil nail using hyperbolic pullout model vol.6, pp.3, 2014, https://doi.org/10.12989/gae.2014.6.3.277
  28. Monitoring and analysis of PHC pipe piles under hydraulic jacking using FBG sensing technology vol.49, 2014, https://doi.org/10.1016/j.measurement.2013.11.046
  29. Study on the Deformation Measurement of the Cast-In-Place Large-Diameter Pile Using Fiber Bragg Grating Sensors vol.17, pp.3, 2017, https://doi.org/10.3390/s17030505
  30. A preliminary study on the location of the stabilizing piles for colluvial landslides with interbedding hard and soft bedrocks vol.224, 2017, https://doi.org/10.1016/j.enggeo.2017.04.020
  31. Smart Sensing Technologies and Their Applications in Civil Infrastructures 2016 vol.2016, 2016, https://doi.org/10.1155/2016/8352895
  32. Mechanical behaviors of SD and CFA piles using BOTDA-based fiber optic sensor system: A comparative field test study vol.104, 2017, https://doi.org/10.1016/j.measurement.2017.03.038
  33. Evaluation of feature- and pixel-based methods for deflection measurements in temporary structure monitoring vol.5, pp.5, 2015, https://doi.org/10.1007/s13349-015-0117-8
  34. Application of Distributed Optical Fiber Sensing Technology in the Anomaly Detection of Shaft Lining in Grouting vol.2015, 2015, https://doi.org/10.1155/2015/678634
  35. Development and Application of Smart Geogrid Embedded with Fiber Bragg Grating Sensors vol.2015, 2015, https://doi.org/10.1155/2015/108209
  36. Distributed fiber optic monitoring and stability analysis of a model slope under surcharge loading vol.11, pp.4, 2014, https://doi.org/10.1007/s11629-013-2816-0
  37. Research on Joint Parameter Inversion for an Integrated Underground Displacement 3D Measuring Sensor vol.15, pp.12, 2015, https://doi.org/10.3390/s150408406
  38. Using Custom Fiber Bragg Grating-Based Sensors to Monitor Artificial Landslides vol.16, pp.12, 2016, https://doi.org/10.3390/s16091417
  39. Application of FBG sensors for geotechnical health monitoring, a review of sensor design, implementation methods and packaging techniques vol.244, 2016, https://doi.org/10.1016/j.sna.2016.04.033
  40. Investigation of the evolutionary process of a reinforced model slope using a fiber-optic monitoring network vol.186, 2015, https://doi.org/10.1016/j.enggeo.2014.10.012
  41. Collapse mechanism for deep tunnel subjected to seepage force in layered soils vol.8, pp.5, 2015, https://doi.org/10.12989/gae.2015.8.5.741
  42. Deformation Monitoring of Geomechanical Model Test and Its Application in Overall Stability Analysis of a High Arch Dam vol.2015, 2015, https://doi.org/10.1155/2015/470905
  43. Distributed Measurement of Temperature for PCC Energy Pile Using BOFDA vol.2015, 2015, https://doi.org/10.1155/2015/610473
  44. Influences of Initial Water Content and Roughness on Skin Friction of Piles Using FBG Technique vol.17, pp.4, 2017, https://doi.org/10.1061/(ASCE)GM.1943-5622.0000794
  45. The Mechanical Performance of Shear Key of Immersed Tube Tunnel with Differential Foundation Settlement vol.2016, 2016, https://doi.org/10.1155/2016/2841753
  46. Review: optical fiber sensors for civil engineering applications vol.48, pp.4, 2015, https://doi.org/10.1617/s11527-013-0201-7
  47. Development and application of a fixed-point fiber-optic sensing cable for ground fissure monitoring vol.6, pp.4, 2016, https://doi.org/10.1007/s13349-016-0192-5
  48. Displacement Parameter Inversion for a Novel Electromagnetic Underground Displacement Sensor vol.14, pp.12, 2014, https://doi.org/10.3390/s140509074
  49. Development of a preliminary slope stability calculation method based on internal horizontal displacements vol.15, pp.5, 2018, https://doi.org/10.1007/s11629-017-4652-0
  50. A monitoring and warning system for expressway slopes using FBG sensing technology vol.14, pp.5, 2018, https://doi.org/10.1177/1550147718776228
  51. Improved plane layout of stabilizing piles based on the piecewise function expression of the irregular driving force vol.15, pp.4, 2018, https://doi.org/10.1007/s11629-017-4671-x
  52. Fiber Bragg grating sensor-based monitoring strategy for slope deformation in centrifugal model test pp.0260-2288, 2018, https://doi.org/10.1108/SR-10-2017-0218
  53. Real-time condition assessment of railway tunnel deformation using an FBG-based monitoring system vol.21, pp.5, 2018, https://doi.org/10.12989/sss.2018.21.5.537
  54. Laboratory Simulation of Flow through Rough-Walled Microfractures under High Hydraulic Gradient vol.2019, pp.None, 2012, https://doi.org/10.1155/2019/4098496
  55. Strain and temperature calibration of Brillouin Optical Time Domain Analysis (BOTDA) sensing system vol.527, pp.None, 2012, https://doi.org/10.1088/1757-899x/527/1/012028
  56. Monitoring of vertical deformation response to water draining-recharging conditions using BOFDA-based distributed optical fiber sensors vol.78, pp.14, 2012, https://doi.org/10.1007/s12665-019-8409-7
  57. Effect of the Soft and Hard Interbedded Layers of Bedrock on the Mechanical Characteristics of Stabilizing Piles vol.10, pp.14, 2020, https://doi.org/10.3390/app10144760
  58. Ground surface changes detection using interferometric synthetic aperture radar vol.26, pp.3, 2012, https://doi.org/10.12989/sss.2020.26.3.277
  59. Performance monitoring of offshore PHC pipe pile using BOFDA-based distributed fiber optic sensing system vol.24, pp.4, 2012, https://doi.org/10.12989/gae.2021.24.4.337
  60. Improvement of upper limit of mining under an aquifer of a super thick unconsolidated layer in Huainan based on multi-physics field monitoring vol.52, pp.2, 2012, https://doi.org/10.1080/08123985.2020.1780116