Ultimate Strength of Fixed Offshore Platforms Subjected to Near-Fault Earthquake Ground Vibration

Figure 2

Histogram of (a) pulse periods. (The ratio of pulse period to fundamental period of JTOP is labeled on the histogram.) (b) Strike-normal peak ground velocities. (c) Significant duration (2.5% to 97.5% AI) of selected records.

(a)

(b)

(c)