Title: Fatigue Strength Evaluation of Offshore Concrete Structures
Author(s): Knut Waagaard
Publication: Symposium Paper
Appears on pages(s): 373-397
Keywords: cracking (fracturing); fatigue (materials); fatigue
tests; loads (forces); offshore structures; prestressed concrete;
reinforced concrete; shear properties; structural design.
The paper presents a short summary of the state of the art with respect to fatigue strength of reinforced and prestressed concrete structures. The simplification made in ordinary design evaluations are shortly discussed. Offshore concrete structures are exposed to an environment which is different from that compared with ordinary land structures. The special feasures of this difference will be discussed. Specially, the nature of the environmental loads causes a random load application in the structure. The paper will discuss how this may be tackled in design. Different methods used in evaluation the fatigue strength of offshore concrete structures are discussed and a proposal is made, on how to formulate a design criteria for offshore concrete structures with respect to fatigue strength evaluation.