Indexed by:期刊论文

First Author:Feng, X.

Correspondence Author:Feng, X.(fengxiaojing.ct@gmail.com)

Co-author:Yang, Q.,Li, S.

Date of Publication:2008-01-01

Journal:Electronic Journal of Geotechnical Engineering

Included Journals:EI、Scopus

Document Type:J

Volume:13 J

ISSN No.:10893032

Abstract:This paper presents a research of pullout behavior of geogrid embeded in red clay. An experimental investigation is conducted under eight different moisture content of the soil. Tests results indicate that the geogrid mainly represents pullout failure embedded in clay, and the ultimate resistance is water-sensitive. It decreased with the rise of the moisture content firstly, and then tended to a constant around the plastic limit where the ultimate pullout force is independent of the normal pressure. The display of strain demonstrates that the decrease of the ultimate pullout force is due to the reduction of the friction capability between the soil and geogrid. Besides this, the moisture content influenced the process of the pullout behavior as well. The load-displacement curve can be separated into three parts: linear ascending segment, nonlinear ascending segment and ultimate segment, the increase of moisture content shortened the second segment, which means that the ultimate pullout force will be reached soon after the end of the first segment. A numerical analysis was conducted on the predicting of the pullout resistance, which shows that predicted and measured pullout resistance have a good agreement for the moisture content lower than plastic limit, and the contribution of friction took up more than 90% of the total resistance. For this kind of frictional geogrid, clay is a viable fill in reinforced structures. © 2008 ejge.

Translation or Not:no