On the validity of miners rule and its application in offshore pile design practice
Publikationstyp
Conference Paper
Date Issued
2022-06
Sprache
English
Institut
Number in series
9-2022
Article Number
V009T10A013
Citation
41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022
Contribution to Conference
Publisher DOI
Scopus ID
Publisher
American Society of Mechanical Engineers (ASME)
ISBN of container
978-0-7918-8594-9
Current design practice simplifies complex loading scenar-ios, i.e. highly cyclic loads from varying direction offshore, us-ing classification methods by combining different cycle packages with constant frequency, mean load level and amplitude. This procedure assumes the resulting accumulated deformation in the soil to be independent of the ordering of the cycle packages, i.e.The validity of miner?s rule. This paper presents an experimental study on the validity of Miner?s rule in non-cohesive soils based on high cyclic direct simple shear tests. The test program com-prises monotonic and high cyclic direct simple shear tests in fine silica sand, which is routinely used at Centre of Offshore Foun-dation Systems. The paper investigates the effect of ordering of the cycle packages on the resulting cyclic deformation accumula-tion for different loading scenarios with varying mean and cyclic load level. The results are evaluated in terms of the accumulated volumetric and the resulting shear strain. Based on the litera-ture, Miner?s rule is assumed to be valid for a deviation of the relevant variables of < 20 %. Conclusions with respect to the influence of cyclic preloading are drawn and related to current design practices.
DDC Class
600: Technology