Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

The paper presents the analysis of a road embankment with variable height (between 4-10m) placed at Iassy, Romania, in the first year of service. It’s about access ledge at a bridge with total length of about 300m. At this time the embankment presents longitudinal cracks parallel with road axle, lateral knobs corresponding to each compacted layer, infiltrations through the backfill from the top (faulty pluvial system) and from the bottom (flooded foundation soil without drainage system). Foundation soil is a metastable clay. Triaxial tests type CKoD on stress loading paths have shown that this soil is sensitive to moistening at shear stresses. The embankment is made also from a clay unusually used for such type of structures and several geosynthetic layers. At the top there is an elastic pavement. The footwalks over the embankment are from reinforced concrete and are bracket assembled. The slopes are 10:1 and are air-placed concreted. The finite element model has taken into account various hypothesis: 1. Model with the soils in natural state, 2. Model with foundation soil in flooded state, 3. Model with foundation soil in flooded state and different artificial consolidation on embankment width. The article presents stresses, strains, and also the stability analysis in seismic conditions imposed by P100-2006. It also presents a prognosis of general state under seismic conditions, analysed limit state of stability and also limit state of bearing capacity of foundation soil.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fifth Conference

Publisher

Missouri University of Science and Technology

Publication Date

5-24-2010

Document Version

Final Version

Rights

© 2010 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

Share

COinS
 
May 24th, 12:00 AM May 29th, 12:00 AM

The Stability and Deformation Limit State Corresponding to the High Road Embankments Close to a Bridge

San Diego, California

The paper presents the analysis of a road embankment with variable height (between 4-10m) placed at Iassy, Romania, in the first year of service. It’s about access ledge at a bridge with total length of about 300m. At this time the embankment presents longitudinal cracks parallel with road axle, lateral knobs corresponding to each compacted layer, infiltrations through the backfill from the top (faulty pluvial system) and from the bottom (flooded foundation soil without drainage system). Foundation soil is a metastable clay. Triaxial tests type CKoD on stress loading paths have shown that this soil is sensitive to moistening at shear stresses. The embankment is made also from a clay unusually used for such type of structures and several geosynthetic layers. At the top there is an elastic pavement. The footwalks over the embankment are from reinforced concrete and are bracket assembled. The slopes are 10:1 and are air-placed concreted. The finite element model has taken into account various hypothesis: 1. Model with the soils in natural state, 2. Model with foundation soil in flooded state, 3. Model with foundation soil in flooded state and different artificial consolidation on embankment width. The article presents stresses, strains, and also the stability analysis in seismic conditions imposed by P100-2006. It also presents a prognosis of general state under seismic conditions, analysed limit state of stability and also limit state of bearing capacity of foundation soil.