This study is designed to evaluate the fire resistance performance for 2 hours based on RWS
fire curves(assuming external fire situation) by investigating tunnel structure. As a result of the
research and test, the highest and average temperatures of samples measured by position
depending on the heating hours were confirmed to be less than the damage critical temperature of
concrete and steel bars, because spalling in the process of test was not also found, there are
considered to have secured fire resistance.