基准建筑对照法在既有建筑改造消防评估的应用OA

The fire safety issues involved in the renovation of existing buildings are new issues facing urban renewal.Based on the consideration of the economic feasibility of the renovation plan,the fire safety level of the renovated buildings should be ensured.A new method for fire safety assessment of renovation of existing buildings,i.e.,benchmark building comparison method,is proposed.The benchmark building is a building that fully meets the requirements of current fire safety regulations,and its functional use,building height,and layout are basically consistent with the proposed renovation building.By quantitative calculation,compare the safety performance of existing buildings and benchmark buildings.If the safety performance of existing buildings reaches or exceeds the benchmark building,it proves that the safety level of existing buildings meets the safety level required by the regulations.Through an existing construction project case,a benchmark building is constructed,and the evacuation time of both the existing building and the benchmark building is simulated using the self-developed building evacuation software BESM.The simulation results verified that when both stairs can be used,the evacuation time of the existing building is 200 seconds,while the benchmark building is 382 seconds;when only one staircase is available,the evacuation time of the existing building is 369 seconds,while the benchmark building is 658 seconds;the simulation confirms that the safety performance of existing buildings is not lower than that of benchmark buildings.The benchmark building comparison method transfers from qualitative experience to quantitative engineering method and can be applied to safety assessment of fire protection renovation of existing buildings.