In this report fatigue behavior and reliability of concrete, in compression-compression, is investigated and a failure surface for high strength concrete is developed. The report is divided into two parts, respectively: Fatigue in Concrete and Reliability and Uncertainty.
In part I a detailed description of how Eurocode, MC1990, MC2010 and DNV assesses fatigue in concrete loaded in compression-compression is made. Further the data that is acquired to develop the failure surface is presented, and the mathematical description of the developed failure surface is elucidated.
In part II the reliability levels of the presented codes are investigated. For this purpose two design cases are considered, namely the design of a bridge section and the design of a wind turbine foundation.
Design equations for the chosen codes are presented, and two different limit state equations are presented. This leads to a calibration of the material partial safety factors for the codes.
A sensitivity study of the limit state equations are carried out to determine which stochastic variables are more important.
Lastly a discussion and a conclusion is presented, which sums up the choices, assumption and results of the report.