Analysis on influence of superstructure stiffness of tall building-foundation-subsoil interaction

The conventional design method of tall building is made the superstructure, foundation and subsoil to three separate forms and calculate independently. This method ignores the interaction of the three parts, which does not conform to the actual stress and deformation of projects. This article describes the mechanism of the interaction of the superstructure, foundation and subsoil, and analyses the effect of the superstructure stiffness changing to the interaction, which provides a theoretical basis for controlling the differential settlement of foundation reasonability and optimizing the structural design.