tailieunhanh - The influence of pile cap on bearing capacity of pile group

This research shows the influence of pile cap on bearing capacity of pile foundation, especially pile groups of shaft resistance. Using PLAXIS-3D FOUNDATION sofware to simulate a actual application with 4 piles in groups and assumption for 7 stiffness modulus of soil under pile cap. The output calculation expresses that in both the cap and the pile carrying the load. The cap is necessary to spread the vertical and horizontal loads and any overturning moments to all the piles in group and transfer load to soil underneath. | THE INFLUENCE OF PILE CAP ON BEARING CAPACITY OF PILE GROUP Hoang Viet Hung1 Abstract This research shows the influence of pile cap on bearing capacity of pile foundation especially pile groups of shaft resistance. Using PLAXIS-3D FOUNDATION sofware to simulate a actual application with 4 piles in groups and assumption for 7 stiffness modulus of soil under pile cap. The output calculation expresses that in both the cap and the pile carrying the load. The cap is necessary to spread the vertical and horizontal loads and any overturning moments to all the piles in group and transfer load to soil underneath. Keywords Influence pile cap bearing capacity transfer shaft resistance. 1. INTRODUCTION Piles are vertical or slightly inclined relatively slender structural foundation members. They transmit loads from the superstructure to competent soil layers. Length method of instalation and way of transferring the load to the soil can vary greatly. In some cases the piles serve only to improve the bearing capacity density or stiffness of the surrounding soil without directly carrying the load of the structure. The connection between the superstructure and the pile is call pile cap. The upper of the pile the end connection to the pile cap is called the pile head and the bottom end is called the pile toe. What lies between the pile head and the pile toe is called the pile shaft. Piles can be used singly or in groups. Mostly piles are placed in groups. The behavior of a single pile is different from that of an individual pile in a group. A pile group can consist of a cluster of piles where the group effect is governing in all directions of load and movement or consist of a row of piles a pile bent where the pile behavior is governed by the group effect in one direction of load and movement while in the orthogonal direction the piles are independent of the group and behave as single piles. The determination for load of pile depend on assumtion that loading transfer only on piles

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