• Vijaykumar
• Dr. S K Prasad

The growth of urban infrastructure has forced the introduction of tall buildings under any subsoil condition. Many a times, Pile foundation becomes an absolute choice causing increased cost of construction. In such situations, Pile-raft foundation can be a convenient alternative, wherein, the raft also contributes towards a part of the load transfer and hence number of piles required to transfer the remaining portion of load can be reduced. Thereby, the total foundation cost can be reduced leading towards sustainable solution. Many tall towers across the globe (example Petronas Tower in Kualalampur in Malaysia, Burj-Khalifa in Dubai, Messeturm building in Frankfurt etc.) have been built on Pile raft foundation and they are performing successfully. The present paper focuses on the study of different parameters influencing the performance of Pile-Raft foundation system. The effects of various parameters such as Number, Length, Diameter and Spacing of Piles have been considered in the analysis of Pile-raft foundation system. In addition the effects of elastic properties of piles and soil such as Young’s modulus and Poisson’s ratio have also been studied. Further, the influence of properties of ground such as shear parameters and density of soil are studied. The soil is modeled using Mohr–Coulomb criteria and structural components of the foundation system are modeled as elastic and rigid concrete structures. The analysis is carried out by using the Finite Element software PLAXIS-3D. Load carrying capacity and settlement of Pile raft foundation system, stresses in soil are the parameters studied to represent the performance of Pile Raft foundation.

Pile-raft foundation System, Finite Element Analysis, PLAXIS-3D.

"Parametric Study of Pile-Raft foundation System Using PLAXIS-3D", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 5, page no.l251-l267, May-2022, Available :http://www.jetir.org/papers/JETIR2205C37.pdf

"Parametric Study of Pile-Raft foundation System Using PLAXIS-3D", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 5, page no. ppl251-l267, May-2022, Available at : http://www.jetir.org/papers/JETIR2205C37.pdf