A METHOD OF GROUND IMPROVEMENT DESIGN BASED ON THE ROBUST CONTROL APPROACH

Abstract

 A performance-based design concept has recently been employed to ground structures in Japan. Reliability analysis method is one of the most compatible approaches to a performance-based design. It is widely known that reliability analysis has three methods: Level-I, Level-II, Level-III. These three methods are based on failure probability, but it is difficult to decide a criterion of failure probability and the probability distribution of input parameters should be assumed.
In this study, we suggested a framework of reliability based design of ground improvement from "robust control approach", which is able to solve these problems. It is realized that this design method enables an owner to decide the specifications of ground improvement rationally.