Affiliation of Author(s):
土木工程学院
Journal:
Advanced Materials Research
Key Words:
中文关键字：路堤;差异沉降;拓宽;软土，英文关键字：Embankment; Differential Settlement;Widening;Soft
Abstract:
Increased traffic volume has made it urgent to improve highway capacities by widening the
existing embankments in south-eastern coastal areas of China. Adding a new embankment adjacent to
the existing embankment will result in additional settlement within the existing embankment. And
also, differential settlement will occur between the existing and widened embankment over soft soils.
Excessive settlement and/or excessive differential settlement may cause longitudinal cracks, drop-off
on the road surface, even local or global instability. A numerical analysis was conducted to investigate
the influence of the thickness of soft soils on the development of settlements of the existing and
widened embankment. The effect of widening time on the settlements was also discussed. The results
indicate that the thicker the soft soils, the more time needed for the existing embankment to reach its
final settlements. It is also found that there exists a most appropriate widening time for minimizing
the additional settlements of the existing embankment on soft soils with a given thickness
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