Abstract
For the last decades, fully erected container cranes have been delivered to a customer site by ships. On one hand, using this method of transportation is very attractive due to its cost and time savings. However, on the other hand, being exposed to cycling loads from the ship motions during the sea voyage, the crane structure accumulates fatigue damage. Using the accumulated fatigue damage parameter, the crane transportation could be associated with the amount of the working cycles the crane could have worked out during its normal operating at the customer site. In the presenting paper the research for the real case of a new crane voyage from China to Ukraine has been done.
Highlights
Practice of lifting cranes they could be delivered from the manufacturer factory to a customer site in two different ways:–– By means of railway
Fully erected container cranes have been delivered to a customer site by ships
The performed analysis has been done based on accelerations of the ship, obtained from the computer modelling based on Global Wave Statistics (BMT Ltd. 1986)
Summary
In this case, the crane is erected on the factory, passes all the tests, is dismantled back into major parts, which are loaded onto platforms and delivered to a customer site (Verschoof 2002). In this case the fully erected and temporarily reinforced crane is loaded on a ship of special type, secured by lashings and some additional supports (in some cases it could be partly dismantled) and transported by sea This method has been being used to deliver the relatively large crane to the customer site for the last 20 years. The main obvious merits are time and cost savings, the possibility to use the machine in short time after its delivery (Pilsch 2004; Van Hoorn 1991; Blackham 1989)
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