Date
03 Jun 1988, 10:00 am - 5:30 pm
Abstract
The 50-m diameter test fill at Ellingsrud, Norway was constructed by NGI to determine preconsolidation pressure of a soft clay, mobilized under field conditions. The height of the fill was increased in four increments during 1972 to 1978. Settlement observations as well as pore water pressure measurements over a period of eleven years are used to evaluate predictions made by the ILLICON computer program. ILLICON analysis requires vertical profiles of compressibility and permeability parameters. The computed surface settlements are within 2 cm of the measured values during the first three loading stages. After the fourth loading, there is a larger range in the measured settlements, however, the computed values lie within the measured range. The computed pore water pressures are also in reasonable agreement with the observations. However, compressibility and permeability data for major depth intervals of the 24m soil profile are not available. Therefore, in spite of good agreement between prediction and field observation one cannot be completely certain whether the input parameters in fact represent the true condition of the soil.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
2nd Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1988 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Mesri, G.; Lo, D. O. K.; and Karlsrud, K., "ILLICON Analysis of Ellingsrud Test Fill" (1988). International Conference on Case Histories in Geotechnical Engineering. 55.
https://scholarsmine.mst.edu/icchge/2icchge/2icchge-session6/55
ILLICON Analysis of Ellingsrud Test Fill
The 50-m diameter test fill at Ellingsrud, Norway was constructed by NGI to determine preconsolidation pressure of a soft clay, mobilized under field conditions. The height of the fill was increased in four increments during 1972 to 1978. Settlement observations as well as pore water pressure measurements over a period of eleven years are used to evaluate predictions made by the ILLICON computer program. ILLICON analysis requires vertical profiles of compressibility and permeability parameters. The computed surface settlements are within 2 cm of the measured values during the first three loading stages. After the fourth loading, there is a larger range in the measured settlements, however, the computed values lie within the measured range. The computed pore water pressures are also in reasonable agreement with the observations. However, compressibility and permeability data for major depth intervals of the 24m soil profile are not available. Therefore, in spite of good agreement between prediction and field observation one cannot be completely certain whether the input parameters in fact represent the true condition of the soil.
