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C600: Strength requirements for simple girders [Table of Contents] Sec.7: Fatigue

DNV-OS-C201 Structural Design of Offshore Units (WSD method)

[-] Sec.6: Section Scantlings
[-] C: Bending and Shear in Girders
[-] C700: Complex girder systems

Sec.6
C 700   Complex girder systems

Sec.6 C
701   For girders that are parts of a complex 2- or 3-dimensional structural system, a complete structural analysis shall be carried out to demonstrate that the stresses are acceptable.

Sec.6 C
702   Calculation methods or computer programs applied are to take into account the effects of bending, shear, axial and torsional deformations.

Sec.6 C
703   The calculations shall reflect the structural response of the 2- or 3-dimensional structure considered, with due attention to boundary conditions.

Sec.6 C
704   For systems consisting of slender girders, calculations based on beam theory, i.e. frame work analysis, may be applied, with due attention to:
—shear area variation, e.g. due to cut-outs
—moment of inertia variation
—effective flange
—lateral buckling of girder flanges.


Sec.6 C
705   The most unfavourable of the loading conditions given in Sec.2 D100 shall be applied.

Sec.6 C
706   For girders taking part in the overall strength of the unit, stresses due to the design pressures given in Sec.3 shall be combined with relevant overall stresses.
C600: Strength requirements for simple girders [Table of Contents] Sec.7: Fatigue