| Popis: |
Conventional shallow foundations are difficult to construct in coastal lowlands due to the flooding of the foundation pit thanks to high water table throughout the year. In order to circumvent the above problem, a new composite short caisson foundation consisting of shallow open caisson with granular core is being proposed for foundations in coastal lowlands. It consists of shallow pipes or well steining with granular core inside. The proposed foundation is analyzed using a linear stress-displacement response of the interface between the outer surface of the steining and the ground which is treated as non-homogeneous. Possible transfer of load from the steining to granular core inside or vice versa is considered in the interaction analysis. Extensive parametric studies quantify the effects of the non-homogeneity on the shear stress distribution, load sharing between the steining and the granular core, and the settlement of the proposed foundation. |
