Abstract: This paper analyzed the issues of fire safety design of underground public circular driveway and the surrounding parking area, that is, some areas between the public circular driveway and the surrounding garage area can't be separated with firewalls, and the special fire shutter is used instead, but the length of the special fire shutter exceeds one-third of the fire separation width, which breached the current code. This paper proposes a safety strategy to solve the issues in fire protection design, including constructing evacuation strategy of vehicles and people; optimazing fire compartment, and clarifying the horizontal and longitudinal separation methods; determining the specific separation scheme of smoke compartment; improving the selection of fixed fire extinguishing facilities, using the automatic sprinkler system instead of the water spray system. The fire safety design issues of underground circular driveway in this paper are universal, however, there is no requirements in the current code for the special case in China.

Key words: circular driveway, garage, fire compartment, smoke compartment, fire design