Predicting compressibility characteristics of soil with oedometer test based on nonlinear regression analysis

  • Tiep Pham Duc

    Le Quy Don Technical University, No 236, Hoang Quoc Viet Street, Hanoi, Vietnam
  • Hung Tran Nam

    Le Quy Don Technical University, No 236, Hoang Quoc Viet Street, Hanoi, Vietnam
  • Le Nguyen Thanh

    Le Quy Don Technical University, No 236, Hoang Quoc Viet Street, Hanoi, Vietnam
Email: phamductiep@lqdtu.edu.vn
Keywords: nonlinear regression analysis, regression coefficient, elastic modulus, coefficient of consolidation, secondary compression index, Oedometer test.

Abstract

When calculating consolidation settlement, it is necessary to process the Oedometer test data to obtain the consolidation parameters of the soil sample. In this paper a single variable nonlinear regression model to predict settlement of the soil sample over time when conducting consolidation test is established. The regression coefficients include the elastic modulus - Es (Young’ modulus), coefficient of consolidation - Cv and the secondary compression index - Cα with 3 different settlement stages (elastic settlement, primary consolidation settlement and secondary consolidation settlement). Nonlinear regression analysis is carried out based on consolidation test data corresponding to a certain load. The results showed that the nonlinear regression model predicts the settlement of the soil sample that fits well the experimental results, and thereby can be used to provide the consolidation parameters for the calculation of settlement in practice.

References

[1]. M. Naseri, E.S. Hosseininia, Elastic settlement of ring foundations, Soils and Foundations, 55 (2015), 284–295. https://doi.org/10.1016/j.sandf.2015.02.005
[2]. TCVN 4200:2012, Đất xây dựng – phương pháp xác định tính nén lún trong phòng thí nghiệm, Hà Nội, 2012.
[3]. S. K. Shukla, N. Sivakugan, B. M. Das, Methods for determination of the coefficient of consolidation and field observations of time rate of settlement - An overview, International Journal of Geotechnical Engineering, 3 (2009) 89-108. https://doi.org/10.3328/IJGE.2009.03.01.89-108
[4]. A. Asaoka, Observational procedure of settlement prediction, Soils and Foundations, 18 (1978) 87-101. https://doi.org/10.3208/sandf1972.18.4_87
[5]. 384/QĐ-BGTVT, Ban hành Quy định tạm thời về kỹ thuật thi công và nghiệm thu hạng mục xử lý nền đất yếu bằng phương pháp cố kết hút chân không có màng kín khí trong xây dựng công trình giao thông, Bộ GTVT, 2013.
[6]. L. Chunlin, A simplified method for prediction of embankment settlement in clays, J. R. M. Geo. China, 6 (2014) 61-66. https://doi.org/10.1016/j.jrmge.2013.12.002
[7]. Persio L.A. Barros, Paulo R. O. Pinto, Oedometer Consolidation Test Analysis by Nonlinear Regression, Geotechnical Testing Journal, 31 (2008) 76-83. http://www.fec.unicamp.br/~persio/IC535/consolidationtest_published.pdf
[8]. Braja M. Das, Khaled Sobhan, Principles of geotechnical enginneering, 8th Edition, Cengage Learning, 2014.
[9]. TCVN 11823-10:2017, Thiết kế cầu đường bộ - Phần 10: Nền móng.
[10]. Cao Văn Chí, Trịnh Văn Cương, Giáo trình Cơ học đất, Nhà xuất bản Xây dựng, 2003.
[11]. 22TCN 262-2000, Quy trình khảo sát thiết kế nền đường ô tô trên nền đất yếu, Bộ GTVT, 2000.

Downloads

Download data is not yet available.
Received
11/01/2021
Revised
18/06/2021
Accepted
11/07/2021
Published
15/08/2021
Type
Research Article
How to Cite
Phạm Đức, T., Trần Nam, H., & Nguyễn Thành, L. (1628960400). Predicting compressibility characteristics of soil with oedometer test based on nonlinear regression analysis. Transport and Communications Science Journal, 72(6), 713-721. https://doi.org/10.47869/tcsj.72.6.4
Abstract Views
127
Total Galley Views
219