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Numerical Analysis of Earthen Embankment Resting on Soft Clay Deposit
Construction of embankment on the soft soil deposit is the major concern in coastal areas as they are prone to stability and settlement problems. Soft clay being highly plastic in nature has high compressibility and very poor shear strength. Soft clay as foundation soil leads to many problems of excessive settlements and unacceptable deformations. Despite of this, there has been development of new cost-effective projects with the large economic and population growth. 2D finite element analysis is carried out to perform the parametric analysis using PLAXIS tool by considering the effect of embankment height, slope, and location of ground water as parameters. The main objective of this study is to determine the settlement and deformations of earthen dam. Since the undrained shear strength of marine clay is low, this restricts the construction of embankment in single stage, therefore stage wise construction method is adopted by Mohr’s–Coulomb’s criteria by considering undrained condition for soft clay and drained condition for embankment soil. Results are recorded in the form of horizontal and vertical deformations, total and effective stress, total and Cartesian strains. Thus, the detailed numerical analysis of the behavior of embankment resting on marine clay deposit and its variation with the parameters is depicted from the comparison of the output curves.
Numerical Analysis of Earthen Embankment Resting on Soft Clay Deposit
Construction of embankment on the soft soil deposit is the major concern in coastal areas as they are prone to stability and settlement problems. Soft clay being highly plastic in nature has high compressibility and very poor shear strength. Soft clay as foundation soil leads to many problems of excessive settlements and unacceptable deformations. Despite of this, there has been development of new cost-effective projects with the large economic and population growth. 2D finite element analysis is carried out to perform the parametric analysis using PLAXIS tool by considering the effect of embankment height, slope, and location of ground water as parameters. The main objective of this study is to determine the settlement and deformations of earthen dam. Since the undrained shear strength of marine clay is low, this restricts the construction of embankment in single stage, therefore stage wise construction method is adopted by Mohr’s–Coulomb’s criteria by considering undrained condition for soft clay and drained condition for embankment soil. Results are recorded in the form of horizontal and vertical deformations, total and effective stress, total and Cartesian strains. Thus, the detailed numerical analysis of the behavior of embankment resting on marine clay deposit and its variation with the parameters is depicted from the comparison of the output curves.
Numerical Analysis of Earthen Embankment Resting on Soft Clay Deposit
Lecture Notes in Civil Engineering
Muthukkumaran, Kasinathan (editor) / Umashankar, Balunaini (editor) / Pitchumani, N. Kumar (editor) / Hulagabali, Anand M. (author) / Srujana, R. (author) / Rachana, A. V. (author) / Longkumer, M. Y. (author)
Indian Geotechnical Conference ; 2021 ; Trichy, India
2023-02-15
17 pages
Article/Chapter (Book)
Electronic Resource
English
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