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Published in:
2019 | OriginalPaper | Chapter
Probabilistic Shear Strength of Bolted Joints in Offshore
Authors : J. L. Ajimituhuo, O. S. Abejide
Published in: Advances and Challenges in Structural Engineering
Publisher: Springer International Publishing
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Abstract
This study evaluates the formulations for prediction of ultimate shear capacity of steel joints in offshore structures in order to ascertain the safety of the structures in service using First Order Reliability Method (FORM) under the European code, EC3:1,8 (2003), design format. Two modes of failure were considered which depend on the embedding strength of the plates and bolts that influences the joints capacities and the failure due to bearing. It is generally observed that the increase in bolt diameter, bolt strength with corresponding steel grades, fasteners thickness improves the safety of the joints, while undue increases in load on the offshore structure may result in safety reduction, but not collapse. The provision for joints design in structures in EC3 (2003) is very robust and efficient. However, economy commensurate with structural safety can be achieved in the current formulations.