Dr Ellen Robson ellen.robson@durham.ac.uk
Post-Doctoral Research Associate
Dr Ellen Robson ellen.robson@durham.ac.uk
Post-Doctoral Research Associate
David Milledge
Stefano Utili
Michael Bründl
Cholachat Rujikiatkamjorn
Editor
Jianfeng Xue
Editor
Buddhima Indraratna
Editor
It is best practice to evaluate the cost-efficiency of different road cut slope stabilization measures, prior to designing new cut slopes or stabilizing existing ones. This can be done by conducting a cost analysis. Most cost analysis methodologies require large datasets that are costly and time-consuming to establish (e.g. databases of historical data or in-situ test results). We present a new cost–benefit analysis (CBA) methodology based on direct cost estimates and a rigorous but parsimonious mechanistic and probabilistic geotechnical slope stability assessment that can be used to evaluate the cost-efficiency of different stabilization measures for a single-cut slope. Probabilistic stability analyses are coupled with a hillslope-hydrological model (the hillslope-storage Boussinesq model) based on the CUTSTAB-P method to determine the frequency of a cut slope failure over a prescribed period. By determining the frequency of the cut slope failure, the cost of failure (remediation) over a prescribed period is established. The cost of failure for a particular cut slope design is combined with the initial upfront investment and running maintenance costs to determine the cost efficiency of implementing the stabilization measures over the entire cut slope lifetime. This methodology is suitable to compare the cost efficiency of many different stabilization designs. Unlike other cost analyses for slope stability, our methodology accounts for uncertainty in slope geomaterial characteristics, as well as for hillslope hydrology.
Robson, E., Milledge, D., Utili, S., & Bründl, M. (2024, November). Cost–Benefit Analysis Methodology for Slope Stabilization Based on Probabilistic Stability Analyses. Presented at ICTG 2024, Sydney, Australia
Presentation Conference Type | Conference Paper (published) |
---|---|
Conference Name | ICTG 2024 |
Start Date | Nov 20, 2024 |
Acceptance Date | Oct 1, 2024 |
Online Publication Date | Oct 24, 2024 |
Publication Date | 2025 |
Deposit Date | Oct 29, 2024 |
Publicly Available Date | Oct 30, 2024 |
Publisher | Springer Nature |
Peer Reviewed | Peer Reviewed |
Pages | 187-193 |
Series Title | Lecture Notes in Civil Engineering |
Series Number | 403 |
Series ISSN | 2366-2565 |
Book Title | Proceedings of the 5th International Conference on Transportation Geotechnics (ICTG) 2024, Volume 2 |
ISBN | 9789819782161 |
DOI | https://doi.org/10.1007/978-981-97-8217-8_20 |
Public URL | https://durham-repository.worktribe.com/output/2992852 |
Accepted Conference Paper
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