ČSN EN 1993-1-9-ed.3 (731401)

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Technická hlediska stavebnictví
Ocelové konstrukce

Anotace textu normy ČSN EN 1993-1-9-ed.3 (731401):

gives design methods for the verification of the fatigue design situation of steel structures.

NOTE - Steel structures consist of members and their joints. Each member and joint can be represented as a constructional detail or as several of the latter.

2) Design methods other than the stress-based methods, such as the notch strain method or fracture mechanics methods, are not covered by EN 1993-1-9.

3) EN 1993-1-9 only applies to structures made of all grades of structural steels and products within the scope of EN 1993-1 (all parts), in accordance with the provisions noted in the detail category ta-bles or annexes.

4) EN 1993-1-9 only applies to structures where execution conforms to EN 1090-2.

NOTE Supplementary execution requirements are indicated in the detail category tables.

5) EN 1993-1-9 applies to structures operating under normal atmospheric conditions and with suffi-cient corrosion protection and regular maintenance. The effect of seawater corrosion is not covered.

6) EN 1993-1-9 applies to structures with hot dip galvanizing in accordance with the provisions noted in the detail category tables or annexes.

7) Microstructural damage from high temperature (> 150°C) that occurs during the design service life is not covered.

8) EN 1993-1-9 gives guidance of how to consider post-fabrication treatments that are intended to improve the fatigue resistance of constructional details.

Assumptions:

• 1) Unless specifically stated, EN 1990, EN 1991 (all parts) and EN 1993-1 (all parts) apply.

2) The design methods given in EN 1993-1-9 are applicable if:

• o the execution quality is as specified in EN 1090-2, and
• o the construction materials and products used are as specified in the relevant parts on EN 1993 (all parts), or in the relevant material and product specifications.
• 3) The design methods of EN 1993-1-9 are generally derived from fatigue tests on constructional de-tails with large scale specimens that include effects of geometrical and structural imperfections from material production and execution (e.g. the effects of tolerances and residual stresses from welding)