1. 1) Railway Technical Research Institute (1999), "Design Standards For Railway Structures And Commentary (Seismic Design)," Maruzen Co., Ltd, Tokyo (in Japanese).
2. 2) Nishimura, A., et al., (1989), "A study On Integrity Assessment Of Railway Bridge Foundation," RTRI Report, Vol.3, No.8, pp.41-49 (in Japanese).
3. 3) Abe, M., et al., (2001), "Identification Of Non-Proportionally Damped System Using Ambient Vibration Measurement And Its Application To A Suspension Bridge," Journal of Structure Mechanics and Earthquake Engineering , Vol.689, I-57, No.2, pp.261-274 (in Japanese).
4. 4) Yoshioka, T., et al., (2010), "Structural Health Monitoring Of Truss Bridge Based On Damping Change In Diagonal Member-Coupled Mode," Journal of Structure Mechanics and Earthquake Engineering A, Vol.66, No.3, pp.516-534 (in Japanese).
5. 5) Railway Technical Research Institute (1997), "Design Standards For Railway Structures And Commentary (Foundation Structure)," Maruzen Co., Ltd, Tokyo (in Japanese).