Title:
Effect of Loading and Beam Sizes on the Structural Behaviors of Reinforced Concrete Beams Under and After Fire
Author(s):
Eunmi Ryu / Yeongsoo Shin / Heesun Kim
Publication:
IJCSM
Volume:
12
Issue:
Appears on pages(s):
Keywords:
fire, RC beam, load level, cross sectional size, experimental study, analytical model
DOI:
Date:
8/2/2018
Abstract:
Performance-based fire resistance design needs consideration of various influencing parameters of structures such
as load levels and cross-sectional size. Therefore, the studies of fire damaged reinforced concrete (RC) structures are
performed experimentally and analytically. Twelve RC beams with different load levels and cross sections are exposed to high temperatures following the ISO 834 standard time temperature. After the fire test, the fire-damaged beams
are loaded using four-point loading to obtain its residual strength. In addition, ABAQUS 6.10-3 is used to preform
structural analyses of the ductility of the fire-damaged beams. The results indicate that the temperature, stiffness
and ductility of the fire-damaged beams are significantly influenced by the load level, cross-sectional size and time
exposed to fire. Also, the ductility of the fire-damaged beam can be predicted using an analytical method, which is
not easy to otherwise determine experimentally.