In the last few years the number of piled rafts, especially those with few piles,udhas increased. It was therefore necessary to develop calculation models with sufficientudaccuracy and cost efficiency for practical use. It will be shown that finite-element analysisudcan be used to fulfill these requirements. This research aims to study the behavior of piledraftudfoundation. Piled-raft foundation is usually designed for buildings to provide adequateudload carrying capacity and to limit the overall settlement and hence control differentialudsettlement within tolerable limits. In this study, proposed model of eight-storey reinforcedudconcrete building with piled raft foundation is located Yangon. The proposed model with piledudraft foundation is analysed by using STADD Pro software. Firstly, the thickness of raft andudsoil modulus is estimated. Secondly, the diameter of pile is estimated by Tomlinson’sudequation, and the bearing capacity of pile foundation is calculated by using the methodudmodified form from the general bearing capacity equations. The vertical displacement or theudvertical settlement of pile is considered by using the theoretical approach and the resultsudobtained from analysing the combined structure. The lateral load resistance and maximumudmoment resistance of pile is calculated by Brom’s method. The foundation design isudconsidered 30% of mat and 70% of pile. The research is extended to the pile capacity andudbearing capacity of subsoil under the raft in order to verify the appropriate parameters forudprediction the settlement of piled-raft foundation of eight-storey building.. Foundationudanalysis will be carried out by using STAAD Foundation software to predict the settlement ofudthis study.
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