Investigating the Merging Behavior at the Floor-stair Interface of High-rise Building Based on Computer Simulations

The merging behavior at the floor-stair interface of high-rise building based on computer simulations is investigated in this paper. A landing with dogleg stairs is adopted in this research. Four different configurations show that the evacuation time is almost a linear function to the number of storeys. Furthermore, the door from the floor to landing, which is on the opposite side of the landing to the incoming stair, is the best situation to improve the upper floors’ evacuation effect, and restrain the lower floors’ evacuation. At the same time, the door from the floor, which is adjacent to the incoming stair, is the worst situation to improve the lower floors’ evacuation, and restrain the upper floors’ evacuation. Additionally, with these results obtained in this paper, the building designer can select a more suitable position to place the evacuation doors.