준설토 활용 경량혼합토의 연약지반개량공법에 관한 수치해석

Title
준설토 활용 경량혼합토의 연약지반개량공법에 관한 수치해석
Alternative Title
Numerical analysis of light-weight air foamed soils using dredged materials for soft ground improvement method
Author(s)
윤길림; 김선빈
KIOST Author(s)
Yoon, Gil Lim(윤길림)
Publication Year
2015-11-09
Abstract
This paper presents the results of a numerical investigation on applicability of light-weight air foamed soils (LWFS) for soft ground improvement, which are made by mixing dredged soils, cement, and air foam to reduce unit-weight and to increase compressive strength. The engineering properties of LWFS were comprehensively investigated based on the previous experimental tests. And three dimensional numerical models which reflect soft ground conditions were adopted to evaluate the applicability of LWFS compared to soft ground improvement methods such as SCP(Sand Compaction Piles) and DCM(Deep Cement Mixing Piles). A number of cases were analyzed using a stress-pore pressure coupled model. The results indicated that LWFS method enables to reduce settlement and lateral ground flow than SCP method and enable to reduce residual settlement than DCM method in the scope of this paper. Also it was revealed that such effects are affected by the properties of LWFS such as lightness, appropriate strength and stiffness and Poissons ratio.rease compressive strength. The engineering properties of LWFS were comprehensively investigated based on the previous experimental tests. And three dimensional numerical models which reflect soft ground conditions were adopted to evaluate the applicability of LWFS compared to soft ground improvement methods such as SCP(Sand Compaction Piles) and DCM(Deep Cement Mixing Piles). A number of cases were analyzed using a stress-pore pressure coupled model. The results indicated that LWFS method enables to reduce settlement and lateral ground flow than SCP method and enable to reduce residual settlement than DCM method in the scope of this paper. Also it was revealed that such effects are affected by the properties of LWFS such as lightness, appropriate strength and stiffness and Poissons ratio.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25088
Bibliographic Citation
The 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, pp.1 - 5, 2015
Publisher
Japanese Geotechnical Society
Type
Conference
Language
English
Publisher
Japanese Geotechnical Society
Related Researcher
Research Interests

marine geotechnics,Dredging & Soft Ground,Offshore Wind Foundations,해양지반공학,준설 및 연약지반,해상풍력기초 및 신뢰성설계

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