Determination of Fire Resistance of Concrete Filled Hollow Steel Sections

摘要

By combining steel and concrete in one structural component, the advantages of each material can be better exploited. The aim of the research project was to find a method of analyzing the behavior of centrally loaded concrete-filled hollow section columns in a fire situation. The column sections were restricted to square tubes with or without reinforcement. The analysis work can be divided in two parts: the determination of the temperature field of a section and the calculation of a failure load. The temperatures of the section were calculated by the TASEF computer program, which is based on the finite element method. The load-bearing capacity was calculated by a simplified calculation method (summation method). (Copyright (c) Valtion teknillinen tutkimuskeskus (VTT) 1991.)