Research On The Modeling Method Of Macro Network Model For Indoor Crowd Evacuation Scene

Building has becoming the primary place for people's living,entertainment and working.Once accidents or disasters occur,people will evacuate the building difficultly.To solve the problem,a large number of analysis software were developed for crowd evacuation simulation by researchers,and most of these software are emphasis on the analysis of special application.While,the complex structure of the building leads to the low efficiency of the modeling of scene model.So,it is increasingly significant to study on modeling method for indoor crowd evacuation scene.Therefore,this paper focus on EVACNET4 model,which is the macro network model of crowd evacuation,building a conceptual model of the indoor space meet the crowd evacuation simulation,achieving the rapid modeling by the existing 3D date model of building to the macro network model of crowd evacuation,and designing scientific visual expression So that,the chasm between the GIS and special application model in the field of crowd evacuation in the construction of 3D city can be crossed.The main contents and achievements of this paper include:(1)The 3D date model of indoor crowd evacuation scene for EVACNET4 modelWith the guidance of theoretical research in geography,architecture and crowd evacuation simulation at home and abroad,this paper builds the indoor scenes 3D data model of EVACNET4 model,which is a macro network model for crowd evacuation.The semantics,geometry,attribute and relationship information of building in conceptual model is discussed in detail,the corresponding representation of logical model and physical storage schema are also established in this paper.(2)The 3D modeling method of indoor crowd evacuation scene based on architectural working drawingThis paper is based on indoor crowd evacuation scene for EVACNET4 model.The respective methods of extraction and transformation for semantics,geometry,attributes and relationship information of single place based on OAM are researched detailedly.As a starting point,the respective methods of extraction and transformation for connections between spaces are analyzed and summarized,which is satisfied to the analytical applications of crowd evacuation.(3)The visual expression for EVACNET4 modelUpon analysis on the simulation results of crowd evacuation models,the visual expression for the macro network model of crowd evacuation are designed in this paper.Combining GIS with EVACNET4 model and analzing the evacuation results of EVACNET4 model,this paper achieves direct expressions or combinatorial expressions.This work can help show the dynamic change of population intuitively and visually.The result of the study shows that the modeling method for indoor crowd evacuation scene based on.Open Arch Model and EVACNET4 can greatly save the time and human resources for manual generation of evacuation scene,and efficiently realize the rapid modeling by the existing 3D date model of building to the macro network model of crowd evacuation.It will promote the development of indoor crowd evacuation modeling study,and the theory development of mapping and geographic information field in 3D city construction...