Abstract: In order to study the impact of smoke from high-rise building fires on adjacent rooms, a 1:10 small?scale high-rise building fire experimental platform was built. By setting different ignition positions, fire source power, and analyzing the temperature rise of adjacent rooms, the impact of smoke on adjacent rooms was preliminarily determined. The results show that the higher the fire floor, the weaker the chimney effect, and a large amount of smoke accumulates in the horizontal space, resulting in a significant increase in adjacent room temperature. As the position of the fire room approaches the front chamber, the adjacent room temperature rise gradually decreases. In the early stage of combustion, the adjacent room temperature rise decreases as the distance from the ignition chamber increases. As the combustion time continues, the temperature rise in the room far from the fire room and near the end of the corridor increases. The greater the power of the fire source, the stronger the stack effect, which reduces the concentration of smoke in the remote room of the fire room. Therefore, when high?rise buildings catch fire on high floors, the smoke from fires in high floors and rooms far from vertical passages has a stronger impact on adjacent rooms.

Key words: high-rise buildings, fire smoke, smoke spread, temperature rise of adjacent room