Abstract
Distribution of axial strain in model piles was measured by Fiber Bragg Grating (FBG) sensor to investigate a possibility of measuring and analyzing the load transfer mechanism of pile foundation by Fiber Optic Sensor (FOS) system. Since FBG of different wave lengths can be multiplexed in an optical fiber, the installation of sensor system and the measurement of strains are relatively simple compared with the system consisted of strain gages. In this study, FBG sensors and electric strain gages were embedded in the piles and the distributions of load transfer measured by two sensor systems were compared. It was observed from the test results that the magnitudes of axial load measured by both systems showed insignificant difference and that the distributions of axial load by FBG were smoother than those by strain gage. Under the environments of laboratory testing, survival rate of embedded FBG system was higher than that of strain gage. Therefore, it was concluded that the use of FBG sensor has a great potential for the measurement of pile load transfer with accuracy.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Publisher | Society of Photo-Optical Instrumentation Engineers |
| Pages | 349-358 |
| Number of pages | 10 |
| Volume | 3988 |
| Publication status | Published - 2000 |
| Event | Smart Structures and Materials 2000: Smart Systems for Bridges, Structures, and Highways - Newport Beach, CA, USA Duration: 2000 Mar 6 → 2000 Mar 7 |
Other
| Other | Smart Structures and Materials 2000: Smart Systems for Bridges, Structures, and Highways |
|---|---|
| City | Newport Beach, CA, USA |
| Period | 00/3/6 → 00/3/7 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Analysis of pile load transfer using optical fiber sensor. / Oh, Jeong Ho; Lee, Won Jae; Lee, Sang Bae; Lee, Woojin.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3988 Society of Photo-Optical Instrumentation Engineers, 2000. p. 349-358.Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - Analysis of pile load transfer using optical fiber sensor
AU - Oh, Jeong Ho
AU - Lee, Won Jae
AU - Lee, Sang Bae
AU - Lee, Woojin
PY - 2000
Y1 - 2000
N2 - Distribution of axial strain in model piles was measured by Fiber Bragg Grating (FBG) sensor to investigate a possibility of measuring and analyzing the load transfer mechanism of pile foundation by Fiber Optic Sensor (FOS) system. Since FBG of different wave lengths can be multiplexed in an optical fiber, the installation of sensor system and the measurement of strains are relatively simple compared with the system consisted of strain gages. In this study, FBG sensors and electric strain gages were embedded in the piles and the distributions of load transfer measured by two sensor systems were compared. It was observed from the test results that the magnitudes of axial load measured by both systems showed insignificant difference and that the distributions of axial load by FBG were smoother than those by strain gage. Under the environments of laboratory testing, survival rate of embedded FBG system was higher than that of strain gage. Therefore, it was concluded that the use of FBG sensor has a great potential for the measurement of pile load transfer with accuracy.
AB - Distribution of axial strain in model piles was measured by Fiber Bragg Grating (FBG) sensor to investigate a possibility of measuring and analyzing the load transfer mechanism of pile foundation by Fiber Optic Sensor (FOS) system. Since FBG of different wave lengths can be multiplexed in an optical fiber, the installation of sensor system and the measurement of strains are relatively simple compared with the system consisted of strain gages. In this study, FBG sensors and electric strain gages were embedded in the piles and the distributions of load transfer measured by two sensor systems were compared. It was observed from the test results that the magnitudes of axial load measured by both systems showed insignificant difference and that the distributions of axial load by FBG were smoother than those by strain gage. Under the environments of laboratory testing, survival rate of embedded FBG system was higher than that of strain gage. Therefore, it was concluded that the use of FBG sensor has a great potential for the measurement of pile load transfer with accuracy.
UR - http://www.scopus.com/inward/record.url?scp=0033727988&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033727988&partnerID=8YFLogxK
M3 - Chapter
AN - SCOPUS:0033727988
VL - 3988
SP - 349
EP - 358
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - Society of Photo-Optical Instrumentation Engineers
ER -