Application Characteristics using Deep Cement Mixing Method in Various Soil conditions
Applications of the DCM(Deep Cement Mixing) Method domestically since 1985 have been employed to improve stability, increase bearing capacity, and reduce settlement of several structures in land and sea area. The construction efficiency of DCM method in the stiff soil layer largely depends on the penetration characteristics of blade attached to the DCM mixing tool. A spiral mixing blade has been revised to increase the construction efficiency of DCM method in the stiff soils. Penetration characteristics of spiral blades building a self-supported DCM wall in the stiff soil layer were evaluated through trial constructions in Gimhae, Incheon, or keywalls in Gunjang areas. Application phenomena and economical efficiency should be considered to determine the critical depth because the penetration efficiency may be decreased in the various soil layers of land or sea area. In this paper it is for the relationship of N value and penetration rate to decrease errors happened owing to uncertainties of influence factors in different soil conditions through statistical analysis approach. Reliability concept in this paper is to do the safety evaluation and increase the effectiveness of construction equipment for the determined value of penetration rate considering the coefficient of variation of depth- penetration rate data including penetration time in different soil conditions, which results of this study is very useful for design stage.
T.S.Yang G.H.Jeong J.D.Koo
Kimpo College, Kimpo, Korea DongA Geological Co., Ltd., Busan, Korea Korea Institute of Constrution Technology, Goyang, Korea
国际会议
上海
英文
2007-10-18（万方平台首次上网日期，不代表论文的发表时间）