Analysis of piled raft foundation in sandy soil using full scale models

Abstract

The conduct of the piled raft foundation system is measured by using different methods. Full scale loading tests were conducted on 18 full scale models consistent with ASTM D1143-07, so as to get actual behavior. The experiment study included carrying out still field load testing for piles fixed in sand soils in Karbala province, these piles are viewed as pioneers within this area. Testing was conducted for Six groups of piles (1×1, 1×2, 3 heaps, 2×2, 5 pile and 2×3). Every group comprised of three states; pile group, just rafts as well as piled rafts, accordingly, a sum of 18 still load testing were done. It was inferred that the piled raft basis diminishes the sum settling as well as prompts increment of the bearing limit more than the piles’ groups along with the raft basis. The loading that was shared via the raft basis is approximately (46.3, 28.5, 27.6, 26.4, 25.7 and 25%) regarding the groups of piled raft (1×1, 1×2, 3 piles, 2×2, 5 piles as well as 2×3), individually. The instance of pilled raft basis can be taken as the basic state on the grounds that the raft basis has no loading share until the piles’ group achieves the completely preparing state. It was seen that the pile achieves this state as the connected loading is in the scope of (40-60%) of the sum burden, after which the raft participates loading share, and afterward it will be failed before pile.