Study On Safety Performance Evaluation System In Multifunctional High-rise Building

The roof of the fire security is to reduce the property loss and to save life. When a building suffers fire, the hot smoke and heat would diffuse to the whole building, which will take much dangerous for the life and property. So, how to control the building fire on time and reduce the loss of life and property is a much important content of the building fire security research.A common method for appraising the building safety is the dynamic simulation research on the building fire security evacuation which based on the smoke theoretical. Its aim is to estimate the occupants whether can be safety evacuation when suffering building fire. If not be safe, the building design and the fire protection design should be modified.The general simulation methods on building fire smoke property prediction are the field model, zone model and network model. But as to know the entire burning detail and the macroscopic procedural of building fire smoke movement, the three models are not suitable. So, it is necessary to develop hybrid model. This paper establishes a hybrid field-network model which based on a connecting platform between the field model and network model, with the field model and network model results as the interface boundary condition for each other. For the hybrid field-network model is under the hypothetical of the network simulation, thus the theory feasibility needs further demonstration.The research on evacuation prediction model is based on the quantify investigation of the occupants movement in normal and emergency condition. The theoretical model consists of three parts, the simulation of fire detection and alarm time, the simulation of the response time and the travel time.By using the high-rise building fire smoke prediction software which is based on the hybrid field-network model, we can simulate the fire smoke property. When confirming the quicksand standard of fire emergency, the available safe egress time can be calculated. What's more, the required safe egress time can be calculated by the evacuation simulate software. Comparing the RSET with the ASET, an evaluation can be taken out for the occupant safety evacuation in building fire. By combining the Fire smoke flow software with the evacuation software, the Safety Performance Evaluation system is established.