http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오늘 본 자료
심태섭,최순범,김선학 朝鮮大學校 建設技術硏究所 2007 建設技術硏究 Vol.27 No.1
It was found that the factor of behavior in the retaining wall of reinforced earth on poor subsoil was influenced by load increment, consolidation time and pore-water pressure. Finite element analysis was conducted by using SAGECRISP program for the behavior analysis of poor subsoil and the retaining wall of reinforced earth in this theory. Firstly, the validity of replacement method was examined for the improvement of excessive displacement of the retaining wall of reinforced earth. Secondly, the influence in the ground behavior of the vertical space of reinforced materials on the back of retaining wall was analyzed. Lastly, the width and the depth of appropriate replacement in appling replacement method were suggested. As the result of this study, following conclusion was got. Replacement method take effect on the behavior improvement of the retaining wall of reinforced earth because the case of replacement method(width: 8m, depth: 5m) in the retaining wall of reinforced earth on poor subsoil shows that improvement effect of vertical displacement is 2 ~ 3cm in the upper direction. 7.5 ~ 26.2cm in the lower direction, 11.6 ~ 26.4cm in the vertical displacement on the back of retaing wall and 7.1 ~ 8.6% in shearing strain. The improvement of horizontal displacement was not great because △h_(h)/H maintained similar value despite the increase of replacement width.
심태섭,기완서,김선학,최순범 朝鮮大學校 建設技術硏究所 2007 建設技術硏究 Vol.27 No.2
Most of current slope safety analyses consider only the effect of the rise of underground water level. However, because the infiltration of surface water into the ground is believed to have significant effects on slope stability, the present study performed slope safety analysis in case of the rise of underground water level, the infiltration of surface water, and both resulting from rainfall, and examined their effects. For this study, we selected Slope A and B, at which slope failure had happened due to rainfall, and made slope safety analysis in consideration of the fall of wetting front and the rise of underground water level resulting from rainfall. Based on the results of the analysis, we made comparative analysis on the relation between the effect of infiltration on rainfall and the stability of the slopes and proposed a desirable slope safety analysis method. The conclusions of this study are as follows. 1. In slope safety analysis in consideration of the effect of infiltration resulting from rainfall, the variation of safety factor was different depending on whether to consider the fall of wetting front, the rise of underground water level. or both. 2. The decrease of the slope safety factor caused by the fall of wetting front on rainfall was somewhat faster than that caused by the rise of underground water level. This suggests that slope failure caused by rainfall is affected more by the fall of wetting front than by the rise of underground water level. 3. When both the fall of wetting front and the rise of underground water level were considered at the same time, the slope safety factor decreased faster than when either the fall of wetting front or the rise of underground water level was considered. Accordingly, it is considered desirable to consider both the fall of wetting front and the rise of underground water level in slope safety analysis that takes into account the effect of infiltration resulting from rainfall.