TY - JOUR
T1 - Case Studies of PSDDF for Phased Placement of Dredged Soils
AU - Lee, Dongseop
AU - Park, Sangwoo
AU - Stark, Timothy D.
AU - Kim, Younguk
AU - Choi, Hangseok
N1 - Funding Information:
Received 28 November 2011; accepted 26 March 2012. The present research was financially supported by a grant (09 E06) from Construction Technology Innovation Program funded by Ministry of Land, Transport and Maritime Affairs of Korean government and by the Korea Universtiy grant (G1000539). Address correspondence to Hangseok Choi, School of Civil, Environmental and Architectural Engineering, Korea University, Anam-Dong, Seongbuk-Gu, 136–713, South Korea. E-mail: hchoi2@korea.ac.kr
PY - 2013/10
Y1 - 2013/10
N2 - Use of Terzaghi's one-dimensional consolidation theory is not suitable for consolidation of highly deformable soft clays such as dredged soils. To model this condition, it is necessary to consider non-linear finite strain consolidation behavior, i.e., changes in compressibility and permeability with increasing stress. A one-dimensional non-linear finite strain numerical model, Primary Consolidation, Secondary Compression, and Desiccation of Dredged Fill (PSDDF), has been used to predict the stress-dependent settlement of fine-grained dredged materials. In this paper, two case studies of using PSDDF are discussed to illustrate the applicability and accuracy of PSDDF. The first case study involves PSDDF simulations of laboratory-phased placement of a marine clay dredged from Busan, Korea. PSDDF results are in good agreement with the corresponding results of the laboratory large strain consolidation tests. The other involves estimating the service life of the Craney Island Dredged Material Management Area near Norfolk, Virginia, in the United States. The excellent agreement between measured and calculated values shows that PSDDF is a reliable tool for predicting settlement of dredged material.
AB - Use of Terzaghi's one-dimensional consolidation theory is not suitable for consolidation of highly deformable soft clays such as dredged soils. To model this condition, it is necessary to consider non-linear finite strain consolidation behavior, i.e., changes in compressibility and permeability with increasing stress. A one-dimensional non-linear finite strain numerical model, Primary Consolidation, Secondary Compression, and Desiccation of Dredged Fill (PSDDF), has been used to predict the stress-dependent settlement of fine-grained dredged materials. In this paper, two case studies of using PSDDF are discussed to illustrate the applicability and accuracy of PSDDF. The first case study involves PSDDF simulations of laboratory-phased placement of a marine clay dredged from Busan, Korea. PSDDF results are in good agreement with the corresponding results of the laboratory large strain consolidation tests. The other involves estimating the service life of the Craney Island Dredged Material Management Area near Norfolk, Virginia, in the United States. The excellent agreement between measured and calculated values shows that PSDDF is a reliable tool for predicting settlement of dredged material.
KW - PSDDF
KW - dredged material placement
KW - non-linear finite strain consolidation
KW - phased placement
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U2 - 10.1080/1064119X.2012.680680
DO - 10.1080/1064119X.2012.680680
M3 - Article
AN - SCOPUS:84880010749
SN - 1064-119X
VL - 31
SP - 348
EP - 359
JO - Marine Georesources and Geotechnology
JF - Marine Georesources and Geotechnology
IS - 4
ER -