Numerical Modeling in Micropile Design for a Pusher Furnace

Timothy C. Siegel, R. Michael Bivens
2015 IFCEE 2015   unpublished
Two new pusher furnaces were installed as part of an expansion to an aluminum facility in Alcoa, Tennessee. These pusher furnaces pre-heat ingots of aluminum prior to rolling into can sheets for beverage containers. The two $20M furnaces replaced 70 individual preheat furnaces of 1950's vintage with a streamlined automated process in a relatively small but heavily loaded footprint. As may be expected, the pusher furnace was very heavy and would be subjected to a wide variety of loading
more » ... of loading conditions with tight deflection requirements. The subsurface conditions consisted of clay overlying pinnacled limestone. Rock-socketed micropiles were selected as the foundation considering the performance requirements and the karst conditions including the potential for sinkholes, soft soils, and differential depth to bedrock. These challenges justified an innovative approach where the pusher furnace and foundation were modeled using FLAC3D. The FLAC3D model was incrementally updated during production installation to ensure that the computed displacements would be within the project criteria.
doi:10.1061/9780784479087.080 fatcat:kipdan2hozdi5e62bs2rdiztda