Proceedings of DFI-India 2018: 8th Conference on Deep Foundation Technologies for Infrastructure Development in India, (DFI)
Advanced Numerical Modelling of Deep Excavation Supporting System Using Contiguous Pile Wall
George Tharakan Idiculla, Research Scholar and Satyanarayana Murty Dasaka, Associate Professor
The use of contiguous pile walls for deep excavation supporting system has become common in geotechnical engineering practice around the world. The implementation of contiguous piles (piles with a gap between them) for deep excavation support is most suitable for cohesive soil, where ground water table is located below the base of excavation. The Soil Arching plays an important role in stabilizing the soil in between the adjacent piles. The Mohr-Coulomb model is routinely used in the numerical analysis of deep excavations, due to its simplicity. Use of an advanced soil model may be prudent to capture realistic soil response during the excavation process. The Hardening Soil model is an effective and better model to simulate the real soil behavior in terms of stress dependency, non-linearity and inelasticity. The present study highlights salient advantages of Hardening Soil model over Mohr-Coulomb model in the numerical modelling of deep excavation supporting system using discrete piles with a gap between them.
|article #3166; publication #1050 (India2018)|