Additional Vertical Movement of the Single Pile Foundation with Combined Loads

Abstract

AbstractPile-foundation support the upper structure to the subgrade, it generally supports vertical loads, occasionally when the horizontal loads are found to be more dominant, it becomes an important consideration in the design. Pile foundations with combined loads are generally analyzed separately, however on the site, the two loads work simultaneously. In-Indonesia, particularly, loading tests do not performed once. Therefore, it does not account for the additional vertical displacement and lateral deflection. This research will investigate the analysis and experimental laboratory, effect of vertical displacement on single pile foundation, as the effect of combined loads, and get a relationship that can be used as a reference for analyzing additional vertical displacement due to combined loads on single pile foundations. The process was in three stages with the first being the the preliminary analysis through 2D Finite Element Method (2D-FEM) Plaxis2D8.6 while the second was an experimental test in the laboratory, and third, being the analysis through 3DFEM Plaxis3D1.1 for validation with soil data and loading test on several projects in the field. The results obtained show that after adding vertical load (Pu) about 5 × lateral load (Hu), that on (Pu/Hu > 5), the vertical displacement stays, (as the result of the loading test) until it collapses, when (Pu/Hu ≤ 5), the lateral load will cause a significant increase in vertical movement due to the combination of the load.KeywordsVertical-horizontal loadSingle pileVertical displacement