Study of deformation reduction for steel panels of composite slabs using three-dimensional thermal conductivity - thermal stress analysis during hot dip galvanizing

Abstract

Steel structures may suffer deformation during hot dip galvanizing due to abrupt changes of temperature. A large-sized structure such as steel panels of composite slab is especially subject to extreme difference of temperature. Consequently, large thermal displacement is generated in structural members and can be left as residual deformation. Therefore, we clarify thermal displacement arising in panels of composite slab product during hot dip galvanizing process by the immersion test and the three-dimensional thermal conductivity and thermal stress analysis. Based on the above analysis, countermeasures to avoid displacement are examined when galvanizing composite slabs.