scholarly journals Eurocode 7 and Rock Engineering Design: The Case of Rockfall Protection Barriers

Geosciences ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 305
Author(s):  
Federico Vagnon ◽  
Sabrina Bonetto ◽  
Anna Maria Ferrero ◽  
John Paul Harrison ◽  
Gessica Umili
Keyword(s):  
Engineering Design ◽  
Probabilistic Method ◽  
Limit State ◽  
Engineering Problem ◽  
The European Union ◽  
Rock Engineering ◽  
Eurocode 7 ◽  
Geotechnical Design ◽  
Rock Engineering Design ◽  
Rockfall Protection

The Eurocode 7 or EC7 is the Reference Design Code (RDC) for geotechnical design including rock engineering design within the European Union (EU). Moreover, its principles have also been adopted by several other countries, becoming a key design standard for geotechnical engineering worldwide. It is founded on limit state design (LSD) concepts, and the reliability of design is provided mainly by a semi-probabilistic method based on partial factors. The use of partial factors is currently an advantage, mainly for the simplicity in its applicability, and a limitation, especially concerning geotechnical designs. In fact, the application of partial factors to geotechnical design has proven to be difficult. In this paper, the authors focus on the way to apply EC7 principles to rock engineering design by analyzing the design of rockfall protection structures as an example. A real case of slope subjected to rockfall is reported to outline the peculiarity connected to rock engineering. The main findings are related to the complementarity of the reliability-based design (RBD) approach within EC7 principles and the possibility of overcoming the limitations of a partial factor approach to this type of engineering problem.

Rock engineering design and the evolution of Eurocode 7

2013 ◽  
pp. 777-782
Author(s):  
L Alejano ◽  
A Bedi ◽  
A Bond ◽  
A Ferrero ◽  
J Harrison ◽  
...  
Keyword(s):  
Engineering Design ◽  
Rock Engineering ◽  
Eurocode 7 ◽  
Rock Engineering Design

scholarly journals Computer-aided SPT-based reliability model for probability of liquefaction using hybrid PSO and GA

2020 ◽  
Vol 7 (1) ◽  
pp. 107-127 ◽  
Author(s):  
Maral Goharzay ◽  
Ali Noorzad ◽  
Ahmadreza Mahboubi Ardakani ◽  
Mostafa Jalal
Keyword(s):  
Engineering Design ◽  
Parameter Uncertainty ◽  
Model Uncertainty ◽  
Probabilistic Method ◽  
Limit State ◽  
Soil Liquefaction ◽  
Probability Models ◽  
Reliability Indices ◽  
Hybrid Particle Swarm Optimization ◽  
Reliability Method

Abstract In this paper, an approach for soil liquefaction evaluation using probabilistic method based on the world-wide SPT databases has been presented. In this respect, the parameters’ uncertainties for liquefaction probability have been taken into account. A calibrated mapping function is developed using Bayes’ theorem in order to capture the failure probabilities in the absence of the knowledge of parameter uncertainty. The probability models provide a simple, but also efficient decision-making tool in engineering design to quantitatively assess the liquefaction triggering thresholds. Within an extended framework of the first-order reliability method considering uncertainties, the reliability indices are determined through a well-performed meta-heuristic optimization algorithm called hybrid particle swarm optimization and genetic algorithm to find the most accurate liquefaction probabilities. Finally, the effects of the level of parameter uncertainty on liquefaction probability, as well as the quantification of the limit state model uncertainty in order to incorporate the correct model uncertainty, are investigated in the context of probabilistic reliability analysis. The results gained from the presented probabilistic model and the available models in the literature show the fact that the developed approach can be a robust tool for engineering design and analysis of liquefaction as a natural disaster.

scholarly journals Principles of Risk-Based Rock Engineering Design

2019 ◽  
Vol 53 (3) ◽  
pp. 1129-1143 ◽  
Author(s):  
Johan Spross ◽  
Håkan Stille ◽  
Fredrik Johansson ◽  
Arild Palmstrøm
Keyword(s):  
Risk Management ◽  
Engineering Design ◽  
Work Conditions ◽  
Design Codes ◽  
Rock Engineering ◽  
Iso 31000 ◽  
Healthy Work ◽  
Rock Engineering Design ◽  
Generic Design ◽  
Practical Recommendations

Abstract 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 characteristics in mind. This paper, therefore, presents a generic design framework for rock engineering. The framework is based on the presumption that rock engineering design must be viewed as decision-making under uncertainty, which makes the design process subject to general risk management principles, as risk is defined as “effect of uncertainties on objectives” (ISO 31000). Thus, rock engineering design codes ultimately need to facilitate design processes that target the risk, to enable design of structures that not only are sufficiently safe and durable and cost-effectively constructed, but also imply safe and healthy work conditions during construction and an acceptably low environmental impact. The presented framework satisfies this fundamental requirement and the authors find codification of its principles to be rather straightforward, as long as the level of detail in the code is governed by a strict application of ISO’s general risk management principles. Further details on methods and practical recommendations can instead be supplemented in separate handbooks and application guidelines.

Rock Engineering Design

2013 ◽  
Author(s):  
Harsha Vardhan ◽  
Rajesh Kumar Bayar
Keyword(s):  
Engineering Design ◽  
Rock Engineering ◽  
Rock Engineering Design
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