Towards Performance-Based Seismic Design of Shiploaders
Publication: Ports 2022
ABSTRACT
Large shiploaders that transfer bulk materials are one of the most critical components of a bulk materials handling port. Any disruption in a shiploader service can cause major interruptions in port operations. The design of shiploaders is covered in a few mobile and semi-mobile equipment standards that are limited in scope and clarity regarding seismic design. To compensate for the limited scope of the mobile and semi-mobile equipment standards, design engineers revert to building codes that are created for human-occupied spaces. Building codes are not suitable for the seismic design of shiploaders as they ignore the shiploaders’ ability to move and rotate. Applying the seismic design rules of building codes to shiploaders will result in a significant uncertainty. In this paper, a case study is presented to highlight the importance of performance-based seismic design for shiploaders. The analysis and design approach that implemented the use of seismic structural fuses to control the structural response to earthquakes are explained. The need for integrating the superstructure with the foundations to simulate the soil-structure interaction is highlighted. The study concluded that the proper modelling of certain mechanical components is essential to simulate their true behaviour during an earthquake.
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Ports 2022
Pages: 659 - 669
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Published online: Sep 15, 2022
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