445 火災加熱による建築部材の温度上昇抑制手法に関する研究(S40-2 火災科学とその応用(2),S40 火災科学とその応用)  [in Japanese] 445 Control of Temperature-rise for Building Components during Fire  [in Japanese]

It is very important to consider and plan the fire safety design of building components exposed to fire. Especially, the public often believe that timber buildings are unsafe in fires, because wood burns readily. This paper was focused on control of temperature rise within wooden elements during fire to limit the fire collapse risk of timber buildings. First of all, the incident heat flux to surface of steel specimen from a radiation panel was investigated. Next, the control effect of charring rates within wooden specimen by using the sprinkler system was examined. As a result, thickness and velocity of water film, charring rates under the condition that the surface of wooden specimen was covered with water film and so on were clarified.