道路盛土による軟弱地盤の長期沈下と二次圧密

概要

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According to long-term settlement data measured in the field, road fills formed on soft ground exhibited greater long-term settlement than housing fills. To manifest determine the reasons for this discrepancy, the authors performed triaxial anisotropic consolidation tests by using various effective principal stress ratios K(=dσ'_3/dσ'_1) and compared the coefficient of secondary consolidation defined by the volumetric strain and vertical strain. When K is smaller than K_o, namely, road fill conditions, the coefficient of secondary consolidation α_v defined by the vertical strain is greater than α_<vol> defined by the volumetric strain. It is considered that long-term settlement of road fills which are not one-dimensional conditions may not have been amplified by the coefficient of secondary consolidation α_<vol> derived from one-dimensional consolidation tests.
社団法人地盤工学会の論文
2002-11-01