Author(s)

K. Fuchida & T. Akiyoshi

Abstract

Aseismic design by ground improvement for preventing damage of soil-pile foundationsuper structure system K. ~uchida' & T. ~ k i ~ o s h i ~ I Dept. of Civil & Architectural Engineering, Yatsushiro College of Technology, Japan 2 Dept. of Civil & Environmental Engineering, Kumamoto University, Japan Abstract The object of this study is to establish the effective aseismic design method for the conditions of ground improvement for preventing liquefaction of the ground damage of pile foundation. The proposed method uses two existing computer programs, NUW2 for 2d effective stress analysis and WAP3 for simulation of the sand compaction pile method. The 17 ground models are selected from the damage examples in which liquefaction and damage of pile foundations occurred in the Kobe area due to the 1995 Hyoga-ken-nambu Earthquake. Numerical computations for responses of the ground and the pile foundations including ground improved cases are performed. By using the natural period of the ground layer a

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