THE CHANGES OF FRICTION CAPACITY OF THE PILE TO SUPPORT SLAB PAVEMENT DUE TO LATERAL LOADS

Soft soils become one of the obstacles in building roads, where the carrying capacity of soft soils is very low and can make the pavement unstable on soft soils. There are several types of pavement that can be built on soft soil, one of which is rigid pavement that is added to the pile as an anchor under the slab pavement, and it is hoped that the pile will be able to support the slab of pavement so that the pavement is not damaged. Lateral loading is one of the important things that must be calculated in the design of road pavement, especially rigid pavement or slab pavement with piles. From this study the effect of lateral loading can reduce the carrying capacity of the pile so that it is feared that it will reduce the performance of rigid pavement, which can result in failure of the pavement structure. From the results of this study, the carrying capacity of piles decreased by 28%, especially the carrying capacity of pile friction due to gap changes, so the coefficient factor in the formulation of carrying capacity for shallow foundations must be multiplied by 78%.