Abstract
The liquefaction of solid bulk cargo would badly interfere with the shipping safety. Ship motion theory and soil mechanics theory were used in the paper to quantitatively analyze the liquefaction risk of solid bulk cargo during its sea transport. The external environment induced loads on the cargo during its sea transport were modeled and calculated based on analyzing of wave spectrum, ship motion and the liquefied shear stress on the cargo. The cargo liquefaction load threshold was determined by Cyclic Triaxial Test (CTT). The cargo liquefaction risk was quantitatively assessed by comparing the actual induced loads accumulated on cargo with the liquefaction load threshold. The liquefied extent of solid bulk cargo in cargo holds was dynamically analyzed and monitored throughout the voyage by 3D simulation. The analyzing results of real accident cases show that this methodology of liquefaction risk analyzing is credible and applicable, and can be used as an effective method for the risk management of sea transport of liquefiable solid bulk cargoes.
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