2011 Fiscal Year Final Research Report

Study on long-term large settlement behavior of clay ground related to clay structure failure and construction of its prediction theory

Research Project

Project/Area Number	21560530
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Geotechnical engineering
Research Institution	Kure National College of Technology
Principal Investigator	MORIWAKI Takeo 呉工業高等専門学校, 環境都市工学分野, 教授 (00166456)
Project Period (FY)	2009 – 2011
Keywords	地盤工学 / 国土整備 / モデル化 / 地盤沈下 / 圧密
Research Abstract	It is reported that the observed values of the consolidation settlement of clay ground were larger than the values predicted by the existing consolidation theories. In this study, the newly developed consolidation tests were carried out on the naturally deposited clays under constant loading and cyclic loading to evaluate the skeleton structure of clay. It was clarified that the change in the skeleton structure of clay is influenced by the loading pattern and the destruction of the skeleton structure is larger under the cyclic loading than under the constant loading as the consolidation time goes by. Furthermore, the new consolidation model was established to express these settlement behaviors.