Longitudinal strength analysis of a crane barge during heavy lifting operation due to variations of trim

Abstract The increasing demand for oil and gas requires the continuous development and revitalization of offshore platforms. One of the common methods for the installation of these platforms involves the utilization of crane barges for lifting operations. However, one of the main concerns is the longitudinal strength of these barges under various loading conditions, particularly during heavy lifting operations which can induce changes in trim. This research intends to perform a comprehensive analysis of the longitudinal strength of a crane barge during heavy lifting operations under different trim conditions. This study will employ advanced modelling and simulation techniques using software to accurately simulate the variations in loads and their subsequent impact on the structural integrity of the barge. The results will show the changes in load distribution, which will be systematically compared across different trim conditions. This analysis included calculations of shear forces and bending moments to compare the conditions of the even keel up to 1-meter trim by stern. Furthermore, this study will compare the ultimate shear force and bending moment obtained with its allowable as defined by the applicable standards and regulations to verify the structural integrity of the crane barge under the specified conditions.