[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5000/EESK.2020.24.4.157

Improvement of the Performance Based Seismic Design Method of Cable Supported Bridges with Resilient-Friction Base Isolation Systems (I- Analysis of Field Testing of Cable Supported Bridge)

Gil, Heungbae (Super Long Span Bridge R&D Center, Korea Expressway Corporation)
Park, Sun Kyu (Department of Civil Engineering, Sungkyunkwan University)
Han, Kyoung Bong (Super Long Span Bridge R&D Center, Korea Expressway Corporation)
Yoon, Wan Seok (Center for Smart Construction Technology, Korea Expressway Corporation)

Publication Information

Journal of the Earthquake Engineering Society of Korea / v.24, no.4, 2020 , pp. 157-167 More about this Journal

Abstract

In this study, a field bridge test was conducted to find the dynamic properties of cable supported bridges with resilient-friction base isolation systems (R-FBI). Various ambient vibration tests were performed to estimate dynamic properties of a test bridge using trucks in a non-transportation state before opening of the bridge and by ordinary traffic loadings about one year later after opening of the bridge. The dynamic properties found from the results of the tests were compared with an analysis model. From the result of the ambient vibration tests of the cable supported bridge with R-FBI, it was confirmed that the dynamic properties were sensitive to the stiffness of the R-FBI in the bridge, and the seismic analysis model of the test bridge using the effective stiffness of the R-FBI was insufficient for reflecting the dynamic behavior of the bridge. In the case of cable supported bridges, the seismic design must follow the "Korean Highway Bridge Design Code (Limit State Design) for Cable supported bridges." Therefore, in order to reflect the actual behavior characteristics of the R-FBI installed on cable-supported bridges, an improved seismic design procedure should be proposed.

Keywords

Cable supported bridges; Resilient-friction base isolation system; Field bridge test; Dynamic properties; Friction analysis;

Citations & Related Records

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