Feasibility Analysis on Natural Smoke Extraction for Large Space Warehouse Buildings

In order to explore the feasibility of the natural smoke extraction of the undivided large space warehouse buildings, the paper analyzes the characteristics, factors and feasibility of natural smoke extraction of the undivided large space warehouse buildings which have been fire damaged, based on the idea of performance-based fire protection design. FDS software is used for fire hazard analysis of the building by simulating the fire scene temperature, smoke layer height and visibility during the natural smoke extraction. It draws the conclusion that: during natural smoke extraction, increased area of the smoke vent and heightened warehouse both, under certain conditions, can lower the fire scene temperature, slow the sinking of smoke and weaken the ground radiation so that the fire scene safety can be guaranteed even in the most unfavorable condition. However, to ensure stable smoke extraction and eliminate the influence from the external environments, some proven fire safety measures can be provided in certain positions.