EXAMINATION OF HEATING CHARACTERISTICS OF STANDARD FIRE FURNACE TEST FOR EVALUATION OF THE MECHANICAL FIRE SAFETY OF BEAM

Distribution of incident heat flux on beam specimen during horizontal furnace test and its dependence on the span length of specimen

Abstract

To research the relationship between size of heating range of horizontal furnace and the distribution of incident heat on the surface of beam, 4m and 8m beam-shaped specimens of inorganic material were heated assuming one-hour fire resistance test. The incident heat was greater for the long span(8m) than for the standard span(4m), and more on the sides of the beam than on the bottom. Furthermore, we calculated heat transfer properties based on temperature and incident heat obtained from the experiments. The convective heat transfer coefficient at the beam side was larger for the long span than for the standard span.