Abstract
This study focused on the investigation of influencing factors on behaviour of piled raftfoundation in Bangkok subsoil. To evaluate the possibility of implementing this system in Bangkok subsoilcondition, this research performed the consolidation analysis of piled raft foundation systems for low-rise (8-storey) and high-rise (25-storey) buildings with basement levels in clay soil, using coupled three-dimensional(3D) mechanical and hydraulic numerical model. The soils are modelled with Hardening Soil model andMohr-Coulomb model. Evaluations of piled raft foundation, i.e., the load sharing ratio of piles, settlementbehaviours in the foundation system are performed. The parametric study on the effect of raft depth, and loadcarried by piles of piled raft was done. The consolidation had a strong influence on the load carried by pilesof the piled raft foundation in Bangkok. The load shared by piles can increase by up to 12% and 6% for lowrise and high-rise buildings, respectively due to the consolidation effect. Therefore, the design of the piledraft foundation system in Bangkok subsoil essentially consider the consolidation effect.
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