Evaluation of mass-permeability of sand-gravel layers and its application to the prediction of long-term setlement of the reclaimed Pleistocene deposits

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560603
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geotechnical engineering
• Research Institution: Kyoto University
• Principal Investigator: MIMURA Mamoru 京都大学, 工学(系)研究科(研究院), 教授 (00166109)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 弾粘塑性構成モデル / 有限要素法 / 三次元解析 / 相互作用 / 過剰間隙水圧 / 沈下

Outline of Final Research Achievements

A three-dimensional code of the finite element method with the non-stationally flow surface elasto-viscoplastic constitutive model has been developed because the rational numerical solution cannot be derived without considering the three-dimensional effect of the generation and dissipation of excess pore water pressure in the reclaimed Pleistocene clay deposits due to the construction of large-scale reclaimed island in the deep sea condition. The psudo-3D calculated performance with one element in the anteroposterior direction shows a good match with the conventional one with the plain-strain calculated one in terms of the compression of the individual Pleistocene clay layers as well as the excess pore water pressure in the reclaimed deposits. It is demonstrated that the newly developed three-dimensional finite element code can function well to analyze the actual stress-deformation behavior of the large-scale reclaimed Pleistocene deposits.

Free Research Field

地盤工学