Numerical Modeling and Investigation of Laterally Loaded Pile Group Embedded in Layered Soil

Abstract

The central purpose of this research is to determine numerical modeling and investigation of group of pile in layered soil when laterally loaded. Deformation and load-bearing capacity of pile groups in relation to the impact of spacing, length, diameter, number of pile were discussed. Since the complex soil-structure interaction in pile group foundations and the absence of field data, numerical approaches are frequently needed. In this study, the load settlement behavior of pile group from previous numerical works was analytically simulated to validate the 3D finite element model. The performance of a rectangular combination pile cap system is evaluated in layered soil subjected to uniform lateral loading. The analysis is conducted using the powerful finite element-based program Plaxis 3D to examine the effects of various parameters. The analysis conducted using the powerful FE-based Plaxis 3D to examine the effects of various parameters. A finite element of three-dimensional was used to evaluate the lateral pile group response subjected to pure lateral load. The study properly focused to assessed (2x2, 3x3 and 4x4)pile group configuration with three values of pile spacing (3D, 4D, 5D), three pile diameter (0.5m, 0.75m and 1m) and three pile length (10m, 15m and 20m) . The impact of group configuration, pile diameter, pile length and pile spacing were discussed in terms of response of load vs. lateral displacement, load vs. soil resistance. In this study and the field test full-scale result obtained from literature were used PLAXIS 3D FOUNDATION FEM for the validation. The pile diameter has a significant effect on the lateral capacity of pile and pile length. Pile spacing has no significant change on lateral resistance of pile. By increasing pile diameter from 0.5m to 0.75m and from 0.75m to 1m, the ultimate lateral load increased by 55% and 59.88 respectively. It is recommended the researchers as they properly and widely to do the influence of axially and laterally subjected loads simultaneously.