Journal of Structural Engineering, A
Online ISSN : 1881-820X
Structural Optimization, Reliability and Expert System
Study on various drainage methods and their evaluations by water penetration analysis for abutment backfill soil in Portal Rigid-frame Bridges
Nobumasa IwasakiKazuo TakeharaYoshiaki TsudaNobuyuki NiihiraAkimitsu Kurita
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2015 Volume 61A Pages 62-69

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Abstract

In a designing of the most of Portal Rigid-frame Bridges (PRB), the earth pressure by the backfill soil for abutment is taken into account as one of design advantages. Accordingly, the soil in the backfill has to be hold in a good condition to show a proper pressure. However, generally, the soil is under an undesirable state due to the water penetration by rain water mainly and also there are few study results regarding these problems. The survey and analysis for the drainage method in Japan, USA and European countries are carried out and a desirable method is proposed in this paper. The usefulness of proposed method is confirmed by two dimensional water penetration analysis using the software PLAXIS.

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© 2015 by Japan Society of Civil Engineers
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