Research Article
Reliability Investigation of Aging Offshore Fixed Structure Using a Probabilistic Method
@INPROCEEDINGS{10.4108/eai.23-11-2022.2338891, author={Arianta Arianta and Arifian Agusta and Gilang M. Gemilang}, title={Reliability Investigation of Aging Offshore Fixed Structure Using a Probabilistic Method}, proceedings={Proceedings of the International Conference on Sustainable Engineering, Infrastructure and Development, ICO-SEID 2022, 23-24 November 2022, Jakarta, Indonesia}, publisher={EAI}, proceedings_a={ICO-SEID}, year={2023}, month={12}, keywords={corrosion monte carlo offshore platform probability failure reserve strength ratio}, doi={10.4108/eai.23-11-2022.2338891} }- Arianta Arianta
Arifian Agusta
Gilang M. Gemilang
Year: 2023
Reliability Investigation of Aging Offshore Fixed Structure Using a Probabilistic Method
ICO-SEID
EAI
DOI: 10.4108/eai.23-11-2022.2338891
Abstract
Indonesia has hundreds of offshore fixed structures, of which 54% have exceeded their design life. Therefore, it is necessary to investigate the structure's integrity so that it is safe to operate against all kinds of loading. One of the uncertainty factors is the weather which affects the wave height in the sea. In this study, the reliability analysis of the offshore fixed platforms was performed using a probabilistic method. The uncertainty parameter studied is the thickness of the corroded structural member against different wave heights. The uncertainty parameter values were obtained from the Monte Carlo simulation. Pushover analysis is performed using the incremental wave analysis (IWA) method to get the base shear value based on the uncertainty parameter. This research results in the base shear limit from the relationship between the probability of failure and the demand parameter as a function of the annual probability.