Prediction Analysis on Coefficient of Consolidation Values in Improved Soft Clays
DOI:
https://doi.org/10.29122/mipi.v15i3.5056Keywords:
Settlement, Asaoka method, Degree of consolidation, Geotechnical instrumentations, Soft clayAbstract
Consolidation is a phenomenon in soil mechanics that often causes geotechnical problems. One solution to overcome consolidation phenomena is by speeding up process of pore water pressure dissipation. The type of soil improvement to upgrade the performance of soft clay is by applying pre-fabricated vertical drain (PVD) and pre-compression simultaneously. Geotechnical instrumentations such as settlement plates, piezometers, and inclinometers were installed at the field of study to monitor magnitude of settlement during consolidation process. After the final settlement was achieved, the consolidation parameters such as coefficient of consolidation, and rate of settlement, were back calculated. Prediction analysis of consolidations parameters was performed by means of Asaoka method. The results of this study is very interesting and provide useful engineering information. It is interesting to note that this case study may be beneficial use to practicing engineers and researchers.
References
Shen, S.-L., Chai, J.-C., Hong, Z.-S., and Cai, F.-X., “Analysis of field performance of embankments on soft clay deposit with and without pvd-improvement,” Geotextiles and Geomembranes, No. 23, pp. 463-485, Elsevier Ltd., Philadelphia, USA, 2005.
Basu, P., Basu, D., and Prezzi, M., “Equal-strain analysis of PVD-enhanced consolidation considering soil disturbance,” Proceedings of the 12th. International Conference of International Association for Computer Methods and Advances in Geomechanics, pp. 3612-3620, Goa, India, 1-6 October 2008.
Asaoka, Akira, “Observational procedure of settlement prediction, “Soils and Foundations, Japanese Society of Soil Mechanics and Foundation Engineering, Vol. 18, No. 4, Dec, 1978.
Pothiraksanon, C., Bergado, D. T., and Abuel-Naga, H. M., “Full-scale embankment consolidation test using pre-fabricated vertical thermal drains,” Soils and Foundations, Japanese Geotechnical Society, Vol. 50, No. 5, pp. 599-608, October, 2010.
Das, B. M., Principles of Foundation Engineering, 8th, Cengage Learning, Stanford, USA, 2016.
Sivaram, B., and Swamee, P., “A Computational method for consolidation coefficient,” Soils and Foundations, Vol. 17, No. 2, pp. 48-52, Tokyo, Japan, 1977.
Ong, C. Y., Chai, J. C., and Hino, T., “Degree of consolidation of clayey deposit with partially penetrating vertical drains,” Geotextiles and Geomembranes, No. 34, pp. 19-27, Elsevier Ltd., Philadelphia, USA, 2012.
Huat, B. B. K., Hoe, C. Ng, and Munzir, H. A., “Observational methods for predicting embankment settlement,” Pertanika Journal of Science and Technology, Vol. 12, No. 1, pp. 115-128, 2004.
Tashiro, M., Noda, T., Inagaki, M., Nakano, M., and Asaoka, A., “Prediction of settlement in natural deposited clay ground with risk of large residual settlement due to embankment loading,” Soils and Foundations, Japanese Geotechnical Society, Vol. 51, No. 1, pp. 133-149, Feb., 2011.
Islam, M. N., Sivakumar, S. T., and Karim, M. R., “Long-term performance of preloaded road embankment,” Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering - Challenges and Innovations in Geotechnics, Vol. 1, pp. 1291-1294, Paris, 2013.
Farnsworth, C. B., Barlett, S. F., and Lawton, E. C., “Estimation of time rate of settlement for multi-layered clays undergoing radial drainage,” Transportation Research Record: Journal of the Transportation Research Board, No. 2363, Transportation Research Board of the National Academies, pp. 3–11, Washington, D.C., 2013.
Li, Chunlin, “A simplified method for prediction of embankment settlement in clays,” Journal of Rock Mechanics and Geotechnical Engineering, Vol. 6, No. 1, pp. 61-66, 2014.
Tan, S. A., “Hyperbolic method for settlements in clays with vertical drains,” Canadian Geotechnical Journal; Vol. 1, No. 31, pp. 125–131, 1994.
Le, H. V., Pham, B. T., Ho, L. S., Nguyen, M. D., “Analysis of consolidation degree using settlement observation results and Asaoka method: A case study of route km 94+340 -:- km 94 + 440 of Hanoi - Haiphong highway construction project,” International Journal of Civil Engineering and Technology (IJCIET), Vol. 8, Issue 11, November 2017, pp. 91-100.
Benamghar, A., and Boudjellal, M., “Comparative study of four consolidation settlement estimation methods of a railway embankment,” MATEC Web of Conferences, Vol. 120, (ASCMCES 17), April 18-20, 2017.
Shi, B., and Kong, X., “Study on methods for predicting the settlement of soft clay roadbed,” Proceedings of the 1st International Congress and Exhibition - Sustainable Civil Infrastructures: Innovative Infrastructure Geotechnology, GeoMEast 2017, Frikha et al. (eds), Egypt, Springer International Publishing AG 2018 W., pp. 370-377.
Kumar, V., and Islam, A., “Evaluating degree of consolidation of soft soil by using Asaoka, hyperbolic and back analysis method,” Proceedings of DFI-India 2017: 7th Conference on deep foundation technologies for infrastructure development in India, January, 2019.
Lakkoju, V., Kommu, S., Reddy, M. M., Sony, B., and Asadi, S. S., “In-situ consolidation analysis by Asaoka and hyperbola methods,” International Journal of Scientific & Technology Research, Vol. 9, Issue 02, pp. 6296-6302, February 2020.
Aspar, W. A. N., and Fitriani, E. N., “Effect of distance and pattern of pre-fabricated vertical drain for improvement of soft clay soil,” Majalah Ilmiah Pengkajian Industri, Vol. 10, No. 1, April 2016, pp. 41-50.
Nawir, H., Apoji, D., Fatimatuzahro, R., and Pamudji, M. D., “Prediksi penurunan tanah menggunakan prosedur observasi Asaoka studi kasus: Timbunan di Bontang, Kalimantan Timur,” Jurnal Teoretis dan Terapan Bidang Rekayasa Sipil, Vol. 19, No. 2, pp. 133-148, August 2012.
Aspar, W. A. N., Fitriani, E. N., and Arthono, A., “Perhitungan kembali nilai koefisien konsolidasi pada perbaikan tanah lempung lunak,” Jurnal Teknologi, Vol. 7, No. 1, January 2017.
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Open Access Policy
MIPI provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.
MIPI by BRIN is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. Permissions beyond the scope of this license may be available at http://ejurnal.bppt.go.id/index.php/MIPI