Abstract
The authors propose a new configuration of columns, which is called irregular configuration. The presented configuration is considered to reduce the amount of subsoil that passes through the in-between gap of columns, compared with the square configuration. To design the cement-treated soil columns passing through laterally flowing liquefied layers it is necessary to quantify the loads that might be applied to those columns by the flowing soil. Pile bending moment were measured by using centrifugal model tests and lateral loads were calculated from the distribution of bending moment. It was found that lateral loads applied to piles by the lateral flow is similar to that of the Japanese Highway Bridges Code.