EFFECT OF SITE NONLINEARITY OF GROUND ON SEISMIC BEHAVIOR OF RC STRUCTURE WITH PILE FOUNDATION

Abstract

 This study was conducted to understand the effect of site nonlinearity of the ground on the seismic behavior of RC structure with pile foundation. First, a reproduction analysis of shaking table tests on a structure with pile foundation-soil system was performed. Then, the effect of site nonlinearity on the behavior of the structure was considered in this analytical model. As a result, it was confirmed that it is necessary to set the conditions so that the contribution of the ground to the target experiment becomes larger when conducting the shaking table tests on ground-structure simulating the natural ground. In addition, as a result of an analytical study under different ground conditions, it was found that the site nonlinearity has some effects on structural behavior when the shear strength of the near-surface ground is small and the nonlinear behavior during earthquakes is significant. However, the effect of site nonlinearity on the structure was confirmed to be very small for the seismic design of the structure.