Verification of Model Validity and Prediction of Large Earthquake Behavior of a Cable-Supported Bridge based on Monitoring

Yusuke Kazui

Master's 2nd year

Civil Engineering

In the 2011 off the Pacific coast of Tohoku Earthquake, damage such as cracks and breaks was found in the seismic isolation rubber bearing installed in the large bridge. In this study, earthquake response monitoring was conducted for a cable-supported bridge, the validity of the model was verified using the observation record, and the damaged part at the large earthquake was estimated. As a result, it was pointed out that if earthquake motion equivalent to Level Ⅱ acted, the seismic isolation rubber bearing would be broken and it is important to reliably limit the vertical response.

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