Rigid inclusion ground improvements as an alternative to pile foundation

Abstract

The new buildings are very often planted in places where the soil is weak or unbearable. Their occurrence eliminates the possibility of shallow foundation. In such cases, it is necessary to make the ground stronger or to make a deep foundation. The paper presents a comparison of the method of the soil reinforcement with rigid concrete columns and deep foundation on piles. Features that combine both methods are presented, as well as advantages and disadvantages of both methods. The next part of the paper describes the basic calculation methods of the subsoil reinforcement with concrete columns. The work is finished with a case study describing an object located in southern Poland, where originally designed foundation piles in CFA technology were replaced by rigid columns made in the same technology.