Research on BIM-Based Building Fire Modeling and Numerical Simulation System

The traditional fire simulation method has a low degree of information and low data utilization rate. The main part of the fire simulation is converting geometry and materials of IFC building components into a fire model and storing the fire simulation results in an IFC file. There are two major descriptions of the shape of building elements in IFC standard. One is stretched body of rule component and the other is boundary expression of the irregular component. The stretching form is transformed into a fire model using a hierarchical transformation. The transformation of triangular and polygonal face sheets is investigated in the boundary expression form part. The material conversion is done by direct method or material database, and the material database is used as a reference library to make the material information more comprehensive. Finally, the fire simulation data formed of a set of attributes. These attributes are associated with the building element and they are stored in the element.