A decision support system for heavy lift

Abstract

This paper describes the development of a decision support system (H-LIFT) designed to provide computer-based support to engineers involved with heavy lifts using sheerleg crane vessels. The knowledge-based approach is adopted in the H-LIFT system, where the knowledge base incorporates domain knowledge on heavy lift, rules and design criteria, component databases, and research results on the strength of lift point components and sling load distribution. H-LIFT is developed using objectoriented technology, and runs interactively within the Windows environment on a personal workstation with three-dimensional graphical displays. The application of the H-LIFT system is highlighted through an illustrative example. This knowledge-based decision support system is found to be an able assistant in heavy lift evaluation and design.