%0 Journal Article
%A JIANG Kun
%A XU Chao
%T Stability Analysis and Design of a Filled Subgrade in Complicated Terrain
%D 2014
%R 10.3969/j.issn.1001-5485.2014.03.025
%J Journal of Yangtze River Scientific Research Institute
%P 142-146
%V 31
%N 3
%X As an important technical innovation, geogrid reinforced embankment is of great significance to improving highway quality, saving land occupation, and protecting eco-environment. The stability of geogrid-reinforced high-filled subgrade of an expressway in mountainous area was analyzed using simplified Bishop method and wedge method. One-way HDPE geogrid with an ultimate tensile strength of 90kN/m was selected as reinforcement material for the high slope (36m) of the subgrade. The minimum safety factor <i>K</i> was 1.32 by simplified Bishop method, and was 1.45 by wedge method. Results indicate that geogrid reinforcement could improve the stability of high-filled subgrade in complicated terrain so that the safety factor meets the requirement of  standards. Meanwhile, the rational adjustment of reinforcement layout according to  the characteristics of specific project is recommended to enhance the reliability of high-filled subgrade.
%U http://ckyyb.crsri.cn/EN/10.3969/j.issn.1001-5485.2014.03.025