Experimental Analysis and Validation Techniques of Piled-Raft Foundation System

Abstract

Due to urbanization, the high-rise building has become a common and growing phenomenon in all over the world. If a raft foundation does not meet the design requirement by itself, then the addition of a pile (piled-raft foundation system) may be possible with the raft. In this paper, the design of piled-raft foundation system has been carried out as the approximate assessment of the required number of piles, asses where piles may be required and refine piling requirements on their locations. The design strategies for the design of piles have been shown, and it has been demonstrated with the effective and efficient foundation can be designed by utilizing the significant capacity of pile. These strategies improve both the ultimate load capacity of the pile and settlement or differential settlement of the raft. In this analysis using of pile as settlement reducer and the condition in which the approach may be successful is derived. The characteristic behavior of the piled-raft foundation system has been considered in the effect of number of piles, nature of loading, raft thickness, and effect of load level on settlement. The behavior of piled raft is determined by complex soil-structure interaction effects, and understanding of these effects is useful for the reliable design of such foundations. The study brings out the effects of number of piles, pile length, raft thickness, and pile configurations; along with the soil-structure interaction by mean of the numerical modeling validation is compared with the measured and computed results.