Analysis of the suitable foundation solution of piled raft for the irrigation sluice in Ca Mau

Abstract

Reinforced concrete sluices are used for tidal control and water regulation in irrigation systems. With the structure of the culvert bottom slab which is also the foundation on the reinforced concrete pile foundation, the culvert foundation structure acts as the pile - raft system. The method of calculating pile foundation culverts with the concept of the entire structure load supported by the piles and even distribution of the piles is applied by many designers, making the calculation and the arrangement of piles simple, but this method will not reflect the actual working model of the actual pile - raft foundation system. In this paper the  finite element method via Plaxis 3D software is applied to analyze pile foundation culverts and evaluate the applicability of this method in the foundation design. Moreover, the suitable arrangement of piles is proposed to optimize the pile arrangment, maximize the load-bearing capacity of piles and save 32 % of the total length of piles.