A METHOD TO ESTIMATE THE PRESENCE OR ABSENCE OF SEISMIC DAMAGE OF MOORING FACILITIES IN PORT BY USING VELOCITY-PSI VALUE OBTAINED FROM STRONG-MOTION SEISMIC OBSERVATIONS

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  • 港湾地域強震観測から得られる速度PSI値を用いた港湾単位での被害有無の概略判定手法

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<p> In this study, a method is proposed to estimate the presence or absence of damage to mooring facilities in a port area by using velocity-PSI values calculated from seismic waveforms (on the ground surface) at each port, which are obtained from the Strong Motion Earthquake Observation in Japanese Ports. The definition of "damaged" is defined as the case where there is damage at least at one facility in the port where the observation point is located. The estimate method consists of: 1) a table for on-site engineers that classifies the velocity-PSI values in stages and explains the presence or absence of damage to mooring facilities and the degree of damage assumed for each classification, and 2) an earthquake fragility curve that expresses the possibility of damage to mooring facilities in each port using the velocity-PSI values as an indicator. This method was applied to the evaluation of damage in the Noto Peninsula earthquake, and a certain degree of applicability was confirmed.</p>

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