A STUDY ON THE APPLICABILITY OF FRAME ANALYSIS AND RESPONSE SPECTRUM METHOD TO EVALUATE SEISMIC COEFFICIENTS OF COASTAL PARAPET LEVEES WITH PILE FOUNDATIONS

Abstract

 This study aimed to establish a method for evaluating coastal parapet levees' seismic coefficients taking their dynamic characteristics under level-1 earthquake's loads into consideration. Two methods were applied to parapet levees, which are the method to estimate the natural frequency using frame analysis and the method to estimate the maximum acceleration during earthquakes using acceleration response spectrum, and the validity of those methods for the coastal parapet levees which have pile foundations was verified. As a result of study, the applicability of those methods was examined. Expecting the extreme large earthquakes, the maximum acceleration of coastal parapet levees during earthquakes was estimated with a high precision using the natural frequency calculated by the frame analysis and the acceleration response spectrum calculated by the one dimensional dynamic response analysis.