EFFECT OF ANCHOR DEPTH ON BEHAVIOR OF SHEET PILE WALLS USING PLAXIS 2D

Abstract

Sheet pile walls are structures used to retain soil, rock or other materials in a vertical condition. Hence they provide a lateral support to vertical slopes of soil that would otherwise collapse into a more natural shape. They have been used to support excavations for below grade parking structures, basements, pump houses, and foundations, construct cofferdams, and to construct seawalls and bulkheads. In order to have a more efficient usage of construction areas in congested urban areas a vertical development of buildings becomes necessary. Currently we more often face situations where urban buildings need as many parking spaces, so, due to lack of space, that requires the development of several underground floors. The design and execution of deep excavations in congested urban areas is quite a challenge especially in terms of geotechnical engineering and it requires a good knowledge of the soil mechanics and soil interaction with the retaining walls of the excavation. As such, the performance of support systems for deep excavation requires careful consideration of soil-structure interaction. This study involves 2D Finite element model is developed using PLAXIS to investigate the behavior of anchored sheet pile walls by varying different anchor location. The analysis is carried out considering non-linear behavior of soil using Mohr-coulomb failure criteria.