Felsbauplanung mit dem geotechnischen Werkzeugkasten von morgen: Eurocode 7 – Allgemeine Regeln (EN 1997‐1:2024)

Abstract

AbstractThe second generation of Eurocode 7 aims at covering ground, including both soil and rock. Current practice of ground engineering forms the basis, and the aim is to include rock engineering, improving ease of use, harmonization of regulations, and covering new developments. This paper deals with EN 1997 part 1 addressing the general rules of geotechnical design, connected to EN 1990, the basis of structural and geotechnical design, and parts 2 and 3 of EN 1997. The design process from ground investigation to the verification of limit states is illustrated with a focus on rock engineering. The following topics are dealt with in more detail: Geotechnical Categories: They are now based on Consequence Classes and newly introduced Geotechnical Complexity Classes. A limit state design to be sufficient has to be combined with other checks depending on these classes. Replacement of the Design Approaches of the current Eurocode 7: Ultimate limit states will be verified by a combination of Verification Cases with partial factors on actions and action effects, and sets of partial factors on ground properties and resistances, respectively. Application of numerical methods, where a ULS‐verification with two sets of partial factors is defined. Use of probabilistic methods in design by calculation, especially appropriate in cases where properties of discontinuities govern the design. Practice of the Observational Method, including design variants and regulations about their choice.