It has been well known that flow of pore fluid in compacted soils will also occur horizontally as well
as vertically since the surface of an embankment is a natural drainage boundary. In addition, this flow
is ultimately predominant in the horizontal direction in the soil structure because of the layering roller-
compacted fill.
On the other hand, in consolidation tests on compacted soils as embankment materials, the curvre
representing time-dependant settlement relationship has a characteristic shape. This phenomenon is
very different from ordinary saturated clays. The present objected is to extend the one-dimentional
consolidation theory to take account of the two dimentional anisotropic one.
Considering anisotropy of consolidation behavior and characteristic of compacted soils mentioned
above, the author derived an anisotropic consolidation equation and its solution under axi-symmetric
cylindrical coordinates. In this treatment, an assumption was made that a stress-strain relation of the
soil skeleton was represented by a rheological model comprising a Voigt body. Consequently, a general
expression of the strain was proposed for the sum of two parts: the effective stress remaining constant and effective stress varying with time(Eq.(12)). Solutions obtained from the basic equation (Eq.
(15)or(16)), that are equations regarding the pore pressure distribution (Eq.(26)), consolidation setttlement(Eq.(27))
and average degree of consolidation (Eq.(28)), were found to be similar to solutions
of one-dimensional equation in form except for additional terms due to radial directional effects. From
this reasoning, the author indicated that parmeters concerning two-dimensional anisotropic consolidation
could be calculated numerically by utilizing parameters obtained from one-dimensional one.
雑誌名
三重大学生物資源学部紀要 = The bulletin of the Faculty of Bioresources, Mie University
巻
2
ページ
63 - 70
発行年
1989-03-30
ISSN
0915-0471
書誌レコードID
AN10073846
フォーマット
application/pdf
著者版フラグ
publisher
日本十進分類法
511
その他のタイトル
An Anisotropic Consolidation Equation on the Embankment Material Considering Visco-elastic Behavior
粘弾性を考慮した盛土材の異方圧密方程式について
AN100738460000206.pdf
(393.59KB)
