Investigation of Laterally Loaded Pile Response and CohesionLess Soil Deformation Pattern Using PIV Technique: Fid-Bau Portal

Investigation of Laterally Loaded Pile Response and CohesionLess Soil Deformation Pattern Using PIV Technique

Al-Neami, Mohammed A. / Al-Dahlaki, Mohammed H. / Al-Majidy, Aya H.

Several high-rise buildings, transmission towers, retaining structured, bridges are braced by piles foundation. These buildings tolerate axial load and succumb to large lateral loads, source from quakes, slope failure, and vehement winds. So, the lateral bearing capacity of the pile is essential for the structure of deep basics. This study gives the outcomes from three models for a single pile embedded in medium dense, dry sand to determine the effect of slenderness ratio (L/D) on the response of the lateral load pile and on the adjacent soil deformation, joined with parallel and perpendicular displacement fields measured using a particle image velocimetry (PIV) technology. The results for this study illustrate that the embedment ratio (L/D) is an essential parameter that has an effect on the ultimate lateral load. It shows that when the embedment ratio (L/D) increased, the ultimate lateral load is also increased. It is found that the ultimate lateral load increased by 16.7% and 28.6% when L/D increased to 25 and 30, respectively, compared to L/D = 20. The pile deformation due to the lateral load is influenced by pile slenderness ratio (L/D) and magnitude of the applied lateral load and depending on these two parameters, the deflection values altered to positive and passed over zero. The digital image analysis (PIV) shows that the profile effect region and the displacement fields are increased as a lateral load increased. It is observed that the sand close to the ground surface behind the pile travels downward while it moves upward in front of the pile. In this research, a numerical study is done by the PLAXIS 3D analyses and compares the numerical study and experimental work on the load–deflection curve of a single pile. The result of the numerical analyses is in good alignment with those found from the laboratory work for all the (L/D) ratios.