Using deep foundation to reduce the effects of the adjacent foundation on cohesionless soil by PLAXIS-3D.

This paper investigates the behavior of two parallel foundations resting on the cohesionless soil for different foundations. As there are many empirical and analytical studies of shallow contiguous foundations on the sand in various conditions, dimensions, and forms; where The attempts to investigate the behavior of soils under stress from two close foundations can be traced back to [1], six decades ago but there are very few studies on the effect of deep foundations on adjacent shallow foundations, and this is what the researcher will address. The impact of interference on tilt, settlement, differential settlement, total normal stress, and pressure are studied using the finite element PLAXIS 3D-2021[2]. The sand is stimulated using the Mohr-Coulomb soil model[3]. A parametric study is performed for different clear spacing between the foundations' S' is varied from 0B to 5B until effects end in numerical studies. It also presents the impact of the Variation length of piles on the interface. Observe the reduction of the effects of neighboring high buildings due to using piles, where the differential settlement and tilt were reduced by about 32.5% and 47.5% when using piles of lengths 9 m and 15 m, respectively, with comparing with the raft foundation in the distance 0B between the two foundations with a load of 12.5 KN/m² for old building and load of 200 KN/m² for a new building. [ABSTRACT FROM AUTHOR]