A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The displacement of bridge abutments on clay
The behaviour of spread base abutments on form to stiff clay have been investigated by centrifuge model experiments, which involve embankment building and bridge deck loading simulation. Wall movements during undrained foundation response and consolidation under the new embankment were observed and back-analysed. Stiffness response of the one-dimensionally consolidated clay is deduced from plane strain element tests and stress history analyses. Stress path direction and stress-strain history is found to be important for the calculations of undrained ground deformations based on a plastic deformation mechanism, and subsequently in the estimation of wall displacement. Long-term wall movements are shown to be influenced by the rigidity of the wall and the granular backfill, so that inevitable differential settlement of the wall base leads to backward rotation and forward sliding at the base while the wall crest is inhibited from moving into the backfill. This causes increase of bending moment in the stem, but the limit of the horizontal thrust on the stem can be estimated from the sliding resistance of the base.
The displacement of bridge abutments on clay
The behaviour of spread base abutments on form to stiff clay have been investigated by centrifuge model experiments, which involve embankment building and bridge deck loading simulation. Wall movements during undrained foundation response and consolidation under the new embankment were observed and back-analysed. Stiffness response of the one-dimensionally consolidated clay is deduced from plane strain element tests and stress history analyses. Stress path direction and stress-strain history is found to be important for the calculations of undrained ground deformations based on a plastic deformation mechanism, and subsequently in the estimation of wall displacement. Long-term wall movements are shown to be influenced by the rigidity of the wall and the granular backfill, so that inevitable differential settlement of the wall base leads to backward rotation and forward sliding at the base while the wall crest is inhibited from moving into the backfill. This causes increase of bending moment in the stem, but the limit of the horizontal thrust on the stem can be estimated from the sliding resistance of the base.
The displacement of bridge abutments on clay
Translation von Brückenpfeilerwiderlagern auf Lehmschichten
Bolton, M.D. (author) / Sun, H.W. (author)
1991
8 Seiten, 26 Bilder, 2 Tabellen, 6 Quellen
Conference paper
English
Behaviour of Bridge Abutments on Clay
| NTIS | 1989
Scour Around Bridge Abutments in Clay Bed
| TIBKAT | 2021
Scour Around Bridge Abutments in Clay Bed
| Springer Verlag | 2020
Behavior of piled bridge abutments on soft clay
| British Library Conference Proceedings | 2002
Passive Force–Displacement Behaviour of GRS Bridge Abutments
| Springer Verlag | 2018