[HTML][HTML] When is the observational method in geotechnical engineering favourable?

J Spross, F Johansson - Structural safety, 2017 - Elsevier
The observational method in geotechnical engineering is an acceptable verification method
for limit states in Eurocode 7, but the method is rarely used despite its potential savings …

Probabilistic observational method for design of surcharges on vertical drains

J Spross, S Larsson - Géotechnique, 2021 - icevirtuallibrary.com
Preloading with a surcharge is today commonly used together with prefabricated vertical
drains for embankment construction on clayey soil to accelerate primary consolidation and …

Principles of risk-based rock engineering design

J Spross, H Stille, F Johansson… - Rock Mechanics and Rock …, 2020 - Springer
In comparison with other types of construction, the development of rock engineering design
codes has been slow. Codes must, however, be developed with relevant discipline-specific …

[HTML][HTML] Reliability aspects of rock tunnel design with the observational method

W Bjureland, J Spross, F Johansson, A Prästings… - International Journal of …, 2017 - Elsevier
According to Eurocode 7, two accepted approaches for managing uncertainty in tunnel
design are reliability-based methods and the observational method. Reliability-based …

[HTML][HTML] Lessons learnt from a deep excavation for future application of the observational method

R Fuentes, A Pillai, P Ferreira - Journal of Rock Mechanics and …, 2018 - Elsevier
This paper draws lessons learnt from a comprehensive case study in overconsolidated clay.
Apart from the introduction of the case study, including field measurements, the paper draws …

[HTML][HTML] Reliability-based alarm thresholds for structures analysed with the finite element method

J Spross, T Gasch - Structural Safety, 2019 - Elsevier
Civil engineering structures are commonly monitored to assess their structural behaviour,
using alarm thresholds to indicate when contingency actions are needed to improve safety …

[HTML][HTML] Numerical modelling of incipient motion of fracture infillings

P Teng, S Zhang, F Johansson - … Journal of Rock Mechanics and Mining …, 2021 - Elsevier
Fine-grained infilling materials in rock fractures cannot be penetrated by cement-based
grout, while high water velocities in the unfilled parts of the fracture can impose erosion of …

On the need for a risk-based framework in Eurocode 7 to facilitate design of underground openings in rock

J Spross, H Stille, F Johansson… - Rock Mechanics and Rock …, 2018 - Springer
The European design code for geotechnical engineering, EN-1997 Eurocode 7, is currently
under revision. As design of underground openings in rock fundamentally differs from …

A comprehensive evaluation model for curtain grouting efficiency assessment based on prospect theory and interval-valued intuitionistic fuzzy sets extended by …

Z Liu, W Song, B Cui, X Wang, H Yu - Energies, 2019 - mdpi.com
Grouting-efficiency evaluation is a key element in grouting-construction control. However,
most existing grouting-efficiency evaluation models do not consider the hesitation and …

Design Methodology for Grout Curtains Under Dams Founded on Rock

S Zhang, F Johansson, H Stille - Geotechnical and Geological …, 2022 - Springer
Grout curtains are commonly constructed under dams to reduce the seepage through the
rock foundation. In the design of grout curtains, empirical methods have mainly been used …