Effects of seismic input and boundary conditions in numerical analyses of geosynthetic reinforced slopes

• Type: Article in International Conference Proceedings Book
• Date: 2012

Authors

Castorina Silva Vieira (Author) FEUP; Maria de Lurdes Lopes (Author) FEUP; Laura Caldeira (Author) FEUP

Conference proceedings International

Title: YIC2012 - ECCOMAS Young Investigators Conference 2012

Pages: 1-9

YIC2012 - First European Community on Computational Methods in Applied Sciences (ECCOMAS) Young Investigator

University of Aveiro, Portugal, 24-27 April 2012

Scientific classification

FOS: Engineering and technology > Civil engineering

CORDIS: Technological sciences > Engineering > Civil engineering > Geotechnics

Other information

Abstract (EN): In this work the two-dimensional finite difference program Fast Lagrangian Analysis of Continua (FLAC) was used to model the seismic response of a geosynthetic reinforced steep slope. The reinforced slope, with face inclined of 80º, is 6.0 m high and reinforced with 10 horizontal reinforcement layers of 4.8 m long. The paper presents a numerical study that was carried out to analyze the influence of the input motion and boundary conditions. The permanent displacements of the slope face and reinforcement tensile forces are analyzed and compared. The introduction of absorbing boundaries is essential to avoid the reflection of outward propagating waves back into the model. A single frequency harmonic motion may be useful to carry out parametric analyses, however the magnitude of the seismic response may be excessive or diminished.

Language: English

Type (Professor's evaluation): Scientific

Notes: YIC2012_Paper 35