Research on GIS and CAE cooperative coupled dynamic geographical situational response

Abstract

The relationship between geographic entities and geographical environment is a vital research topic of geography, and the response characteristics of geographic entities to geographical environment are the basis of Geo-design and geographical decision. Building entities and geography modeling is the key to intelligent cities and disaster response. In the traditional GIS domain, the modeling of building entities was limited to the representation of geometric features and spatial relations, which was unable to simulate the "action-response" relationship between geographic entities and geographical environments for the lack of the expression of the structural characteristics of architectural entities. In this paper, the structural model of the building, which is taken as a link between the organic coupling of GIS and CAE two heterogeneous systems, is built to achieve geographical entities on the dynamic response of the geography of the environment simulation, thus providing the support for the intelligent geographic decision and disaster emergency. This paper focuses on the definition, composition and expression of the building structure model, which is geared to the coupling of GIS and CAE. It also discusses the methods of GIS-based dynamic geographical simulation and CAE-based response analysis. Moreover, the "role-response" model taken the building structure model as the core is built between "Model-simulation-evaluation-decision" geographic entities and geographical environment. The results of structural analysis and the evaluation of diagnosis results are visualized by means of "3D thematic map", and the components are modified and optimized based on the interactive modification method. The structure analysis and design efficiency are improved and the iteration cycle of structure design is accelerated. Design of building structure and modeling quality are been improved. This research extends the static spatial characteristics expression of GIS to dynamic geography scene simulation, further expending the study category of relationship between geography entities and geography environment.