Browse > Article
http://dx.doi.org/10.7234/kscm.2006.19.3.043

Earthquake Movement Measurement of the Top of Bridge Pier Using Fiber Optic Smart Structure Concept  

Kim Ki-Soo (홍익대학교 재료공학부)
Han In-Dong (홍익대학교 재료공학부)
Publication Information
Composites Research / v.19, no.3, 2006 , pp. 43-49 More about this Journal
Abstract
In this paper, a long gauge Fiber Bragg Grating (FBG) sensor system is described and long gauge FBGs are well-suited for measuring the upper parts of the bridge piers under the extremely severe movement conditions. In the experiments, we used more than 30m long FBG sensors to measure the movement of top part of the bridge piers which are separated from the main bridge by cutting the decks. With the actuator, the deck and girders were pushed and released. We checked the movement of the top of the pier while releasing the pressure of the actuator with the long gauge fiber sensor. In order to measure the movement of the upper part of the pier, the reference point must be outside of the pier. Using the optical fiber sensors, one end of the sensor is attached to the top of the pier and the other end is attached to the bottom of the next pier. The fiber sensors showed good response to the release loading and we could calculate the movement of the top part of the pear.
Keywords
Smart Structure; Optical Fiber Sensor; FBG; Bridge Application;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Kim, K. S., L. Kollar and G. S. Springer, 'A Model of Embedded Fiber Optic Fabry-Perot Temperature and Strain Sensors,' J. of Composite Materials, Vol. 27, 1993, pp. 18-1662
2 Toksoy, T., Chuntavan, C. and A. E. Aktan, 'Modal Analysis for Damage Detection In Structures,' Discussion, Journal of Structural Engineering., ASCE, February, 1993
3 Shushkewick K. W., 'Time Dependent Analysis of Segmental Bridges,' Computers & Structures, Vol. 23, No. 1, 1986, pp. 95-118   DOI   ScienceOn
4 Shah P., and Udwadis, F. E.(1978), 'A Methodology for Optimal Sensor Locations for Identification of Dynamic Systems,' J. Appl. Mech.. 45, 1978, pp. 188-196   DOI   ScienceOn
5 R. M. Measures, 'Fiber optic sensor considerations and developments for smart structures,' Proc. SPIE, Vol. 1588, 1991, pp. 282
6 M. Saide, Joseph Shields and Rodney Johnson, 'Monitoring Prestress Forces in a Box Girder Bridges,' A.S. Nowak(ed.) Bridge Evaluation, Repair and Rehabilitation, Kluwer Academic Publishers, 1990, pp. 217-228
7 R. Favre and J. Markey, 'Long-Term Monitoring of Bridge Deformation,' A.S.Nowak(ed.), Bridge Evaluation, Repair and Rehabilitation, Kluwer Academic Publishers, 1990, pp. 85-100
8 Konig, G., and G. Giegerich, 'Identification of Structural Properties Using Dynamic Tests,' Proc. IABSE Symp. on Durability of Struct .. IABSE, Lisbon, Portukal, 1989, pp. 835-840
9 Kim, K. S., A. Segall and G. S. Springer, 'The Use of Strain Measurements for Detecting Delaminations in Composite Laminates,' Composite Structures, Vol. 23, 1993, pp. 75-84   DOI   ScienceOn