Abstract
In this paper piled raft foundation has been analysed by nonlinear finite element method. The three dimensional nonlinear finite element analyses predict the actual behaviour of axial load distribution. The axial load variation is nonlinear for all the piles. For all pressure the element stress is more than the element stress. For any pressure the nodal deflection is maximum at top and minimum at bottom. Up to certain height the element stress is almost zero for all pressures. After that height the element stress increases with increase in height. The element stress increases with increase in pressure the measurement of axial load distribution in pile in field is very difficult and costly.
Highlights
Piled raft foundation is a new type of foundation in which the total structural load is taken by pile through skin friction and the remaining load is taken by raft through contact with the soil
When compared with the axial load distribution of pile of length to diameter ratio 10 it is found that at any depth, the axial load is greater for pile of length to diameter ratio 20
The total load taken by pile of length to diameter ratio 20 is greater than the total load taken by pile of length to diameter ratio of 10
Summary
Piled raft foundation is a new type of foundation in which the total structural load is taken by pile through skin friction and the remaining load is taken by raft through contact with the soil. It is an economical foundation than the pile foundation and the settlement is less than the raft foundation
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