关键词: ArcGIS9.0, 3DS Max7.0, 震害, 三维可视化

Abstract: Earthquake disaster prediction system provides good technical support for protecting against and mitigating earthquake disasters,and becomes mature day by day with the development of GIS technology and the theory of earthquake disaster prediction.But the results of traditional earthquake disaster prediction software are displayed in 2D,such as table,curve and histogram,which are very difficult to reflect the solid characteristic of buildings'damage.So this paper aims at the study of the use of the mainstream 3D modeling software to model of earthquake damage to one-storey house,and at the solutions of how to combine effectively the information of building textures and earthquake damage,that is,using polygon modeling to model 3D buildings.Then it uses "Unwrap UVW" to unwrap the 3D building model's UVW to a picture,and exports the picture to Photoshop by using plug-in.Then it composites the building textures and the characteristics of building damage in Adobe Photoshop to complete the description of seismic damage of buildings.Finally,the compounded textures are returned to 3DS Max and mapped on the 3D models of buildings,resulting in seismic hazard models of.3ds format for the visualization programs.In this paper,the modeling process of seismic hazards is described in detail.Besides,this paper also studies the modeling of house collapse.Since house collapse is involved in many fragments,it is hard to perform modeling using the methods presented above.It is found that the existing software Reactor in the 3DS Max can be used to simulate fracture of a rigid body.With this approach this work realizes the establishment of the model of one-story house collapse,and obtains a good result.At last,this work develops the visualization function of seismic hazards by using the VBA and ArcObjects in the ArcGloble,and combines it with the mainstream GIS,which accelerates the use of 3D visualization technology in protecting against and mitigating earthquake disasters and has provided a new idea for the visualization of earthquake damage to buildings,and for the development of 3D earthquake disaster prediction software based on GIS software as well.

Key words: ArcGIS 9.0, 3DS Max7.0, earthquake damage, 3D visualization