Abstract: “The analysis of multi-storey building structure founded on the soils involves an interactive process starting with the construction stage and ending with a state of balance between stresses and strains developed within the soil field as well as within the structure. The interaction effect becomes more complex when the structure analysis considers the construction phasing of multistory building on composite foundation system. The study considers the complete interaction between the foundation structure and soil, and between the foundation-soil and the super-structure. The soil-structure interaction of combined Piled-Raft Foundation with the foundation soil and superstructure of the building is evaluated through nonlinear 3D-Finite Element Analyses using PLAXIS3D FOUNDATION code. The multi-storey building with construction stages and Hardening Soil for non-cohesive soil is taken in the analysis. The effect of the soil-foundation-structure response with construction phasing and different”

Keywords: Piled-raft foundation, Sequential loading, construction stages, Finite Element Method, Soil Settlement