Verification of Ground Reinforcement Safety Against Level 1 Earthquake Motion Used for Small Buildings

Abstract

In recent years, small buildings are often built on developed ground, and the proportion of ground reinforcement has increased. In conventional ground reinforcement design for small buildings, seismic force design has been omitted without a clear evidence. In this study, 1) the damage of the ground reinforcement under great earthquakes by the questionnaire survey and 2) verification of the horizontal resistance safety by the parametric study were performed. It was found that there was no damage due to the level 1 earthquake motion, and safety against seismic force is ensured sufficiently if the contact pressure of ground is as small as a detached house.