A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Staged Embankment Construction in Soft Clay and Slope Failure Impacted by Wick Drain Local Kinking: Case Study
This paper presents a case study of staged construction and slope failure of embankments built in swamplands. A roadway embankment was constructed incorporating wick drains and surcharge in a staged sequence to accelerate the construction and maintain slope stability. During the staged embankment construction, initial crack development was observed but subsequently stabilized with the removal and regarding of the fill. However, after a placing a subsequent fill lift, a second more significant occurrence of cracking and slope movement developed, which eventually extended and grew wider as a sign of slope failure. The case was analyzed using limit equilibrium models. The computed settlements, excess pore pressures, and displacement were compared with field measurements and indicated that the wick drains may have stopped effective functioning after being locally kinked or severely bent after the initial slope displacement. This did not provide the required pore pressure dissipation. Analysis results show good agreement between the measured and the computed behaviors with the wick-drain kinking effect and proof that wick drain kinking should be an important consideration during staged fill placement.
Staged Embankment Construction in Soft Clay and Slope Failure Impacted by Wick Drain Local Kinking: Case Study
This paper presents a case study of staged construction and slope failure of embankments built in swamplands. A roadway embankment was constructed incorporating wick drains and surcharge in a staged sequence to accelerate the construction and maintain slope stability. During the staged embankment construction, initial crack development was observed but subsequently stabilized with the removal and regarding of the fill. However, after a placing a subsequent fill lift, a second more significant occurrence of cracking and slope movement developed, which eventually extended and grew wider as a sign of slope failure. The case was analyzed using limit equilibrium models. The computed settlements, excess pore pressures, and displacement were compared with field measurements and indicated that the wick drains may have stopped effective functioning after being locally kinked or severely bent after the initial slope displacement. This did not provide the required pore pressure dissipation. Analysis results show good agreement between the measured and the computed behaviors with the wick-drain kinking effect and proof that wick drain kinking should be an important consideration during staged fill placement.
Staged Embankment Construction in Soft Clay and Slope Failure Impacted by Wick Drain Local Kinking: Case Study
Lee, John J. W. (author) / Basnett, Curt R. (author) / Muhammad, Saffraz (author)
IFCEE 2018 ; 2018 ; Orlando, Florida
IFCEE 2018 ; 357-369
2018-06-06
Conference paper
Electronic Resource
English
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