Proceedings of the
8th International Symposium on Geotechnical Safety and Risk (ISGSR)
14 – 16 December 2022, Newcastle, Australia
Editors: Jinsong Huang, D.V. Griffiths, Shui-Hua Jiang, Anna Giacomini, Richard Kelly
doi:10.3850/978-981-18-5182-7_18-011-cd
Updating Epistemic Uncertainty in Reliability Analysis for Pier Pile Stress Using Data in Construction and Maintenance Phase
1Port and Harbor Department, National Institute for Land and Infrastructure Management, Nagase, Yokosuka, JAPAN.
2Graduate School of Management, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto, JAPAN.
3National Institute of Maritime, Port and Aviation Technology, Nagase, Yokosuka, JAPAN.
4Department of Civil and Environmental Engineering, Tohoku University, 6-6-06, Aza-Aoba, Arameki, Aobaku, Sendai, JAPAN.
ABSTRACT
It is becoming more and more important for society to plan and prioritize the repair and maintenance of existing infrastructures under budget constraint. The decision-making process is desirable based on the risk assessment of each facility, as suggested in ISO 2394. In analyzing reliability of a risk assessment, it is necessary to establish random variables with consideration of epistemic and aleatory uncertainties. In the reliability assessment of structures, many epistemic uncertainties, especially those assumed in design phase, can be reduced in the construction and maintenance phases. It would be more effective to re-evaluate the epistemic uncertainty of existing structures by using the information on materials and inspections delivered at construction or maintenance phase. This paper focuses on the pile stress verification of a pier, which is one of the typical structural types of port facilities. We discuss how information obtained in construction and maintenance phases can be reflected in the reliability analysis in several possible situations.
Keywords: epistemic uncertainly, construction phase, pier pile, reliability index.
