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A proposal of reliability-based design formats for ultimate hull girder strength checks for bulk carriers under combined global and local loadings

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Abstract

The purpose of this paper is to provide a basis for the development of reliability-based design formats for ultimate hull girder strength checks for bulk carriers in hogging conditions under combined global and local loading and to estimate implied safety levels in current rule practices for hull girders. The effect of alternative definitions of characteristic still-water loads on the safety format and, hence, the safety factors is assessed. The effect of systematic (bias) model uncertainties associated with loads and strength on the reliability measures is investigated.

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Acknowledgments

The authors would like to thank Zhi Shu and Ingo Drummen for their cooperation and constructive comments, especially regarding wave-induced and still-water loads, respectively.

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Authors and Affiliations

  1. Department of Marine Technology, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway

    Hadi K. K. Amlashi

  2. Department of Marine Technology, Centre for Ships and Ocean Structures, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway

    Torgeir Moan

Authors
  1. Hadi K. K. Amlashi
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  2. Torgeir Moan
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Correspondence to Hadi K. K. Amlashi.

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Amlashi, H.K.K., Moan, T. A proposal of reliability-based design formats for ultimate hull girder strength checks for bulk carriers under combined global and local loadings. J Mar Sci Technol 16, 51–67 (2011). https://doi.org/10.1007/s00773-010-0114-x

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  • DOI: https://doi.org/10.1007/s00773-010-0114-x

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