Abstract
The authors have been exploring the feasibility of a special type of foundation, named insulated pile foundation, which consists of a raft foundation and a set of piles installed in the ground that are not connected to the raft. In this paper, seismic observation of scaled models constructed on an actual ground is described together with its simulation analysis. Scaled models include a spread foundation, a piled foundation and a proposed insulated pile foundation. From this study, it was found that the proposed foundation can reduce the response of the foundation during earthquakes and that it also reduces the stress of piles near the pile head by a great deal.
