Three-Dimensional Numerical Analyses of Pile Response due to Braceded Excavation-Induced Lateral Soil Movement

Abstract:

Using the explicit finite difference code FLAC3D, the behavior of pile adjacent to braced excavation is investigated. The Modified-cam clay constitutive model was employed to model the non-linear stress-strain soil behavior, and the pile was assumed to have linear elastic behavior. The interface model incorporated in FLAC3D code was used to simulate the soil/pile contact, The built-in 'fish' language was used to calculate the data demanded. The pile response such as pile deflection, bending moment and lateral soil pressure were studied, and it is shown that the pile response is different from that caused by the excavations which are unstructted. In "standard" problem, the effect of different pile head constraints on the pile response was investigated, the effect of lateral displacement of the wall, distance from the excavation face, pile stiffness, pile length and axial load on the pile response are also investigated when the pile head is constrained from deflection. The research finding was compared with other published case history and reasonably good agreement was found between them.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 524-531
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.524
• Online since: July 2014
• Authors: Lin Li*, Xiao Xin Hu, Guang Hui Dong, Ju Liu
• Keywords: Axial Load, Braced Excavation, Distance, Lateral Displacement, Pile Stiffness

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DOI: 10.1061/40865(197)22

[11] Lin Li, Guanghui Dong, Fenghui Zhang and Min Yang. Three-Dimensional Numerical Analyses of Pile Response due to Unstructted Excavation-Induced Lateral Soil Movement. Submitted to the 3rd GeoShanghai International Conference, accepted.

DOI: 10.1061/9780784413449.079