STRAIN RATE EFFECT ON LONG-TERM CONSOLIDATION OF OSAKA BAY CLAY :

NDL Digital Collections
  • WATABE,YOICHI
    Soil Mechanics and Geo-environment Research Group, Port and Airport Research Institute
  • UDAKA,KAORU
    Tokyo Geotechnical Center, OYO Corporation
  • MORIKAWA,YOSHIYUKI
    Soil Stabilization Research Group, Port and Airport Research Institute:Kansai International Airport Co., Ltd.

Search this article

Abstract

The consolidation characteristics of clay, based on the isotache concept in which the strain rate effect is considered, have been studied by many researchers. Most of these studies are aimed at calculating the secondary consolidation with high accuracy in order to evaluate the long-term settlement of large structures. In this study, as the first step toward improving the accuracy of the evaluation of long-term settlement at the Kansai International Airport, the consolidation characteristics of Osaka Bay clay are examined and organized based on the isotache concept. This study proposes a simplified model based on the isotache concept by using a compression curve and the relationship between the consolidation yield stress and the strain rate. The former and the latter are obtained from the constant rate of strain consolidation (CRS) tests and long term consolidation (LT) tests, respectively. The latter is expressed by an equation with three isotache parameters. This model is very practical because it requires a minimum of only one CRS test and one LT test. It is widely applicable to the Osaka Bay clay. The isotache parameters used in this model can be commonly determined for the Osaka Bay clays retrieved from various depths at the Kansai International Airport.

Journal

  • Soil and foundation

    Soil and foundation 48 (4), 495-509,

    Japanese Society of Soil Mechanics and Foundation Engineering

Keywords

Details 詳細情報について

Report a problem

Back to top