地震灾情场景计算机在线模拟系统设计

Design of a Computer Online Simulation System forEarthquake Disaster Scenes

摘要:

传统大型多道地震物理模拟系统缺乏对地震灾情场景的图像直观整合，可观赏效果差。设计基于GIS的地震灾情场景计算机在线模拟系统，从系统层次划分以及软件实现两方面完成地震灾情场景的在线模拟，系统由数据层、逻辑层和应用层构成。利用逻辑层中灾情场景生成模块自动整合功能，依据研究地区的GIS数据及其开发部件的底层支持，构建建筑物的三维像素点集合模型，实现灾后场景构建；通过地震动场判定和三维坐标转换，构建灾后场景。实验结果表明，所设计的系统模拟地震灾情场景图像最低误差均值仅为3.4，观赏性好，系统功能及性能满足实际需求。

Abstract:

The traditional large-scale multi-channel seismic simulation system lacks the visual integration of the earthquake disaster scene, and the viewing effect is poor. Thus, a computer online simulation system of earthquake disaster scenes based on GIS was designed for this paper. The system was composed of a data layer, a logic layer, and an application layer. From two aspects of the system level division and software realization, the online simulation of an earthquake disaster scene was developed. According to the GIS data of the research area and the underlying support of the development components, a 3D pixel set model of the buildings at the scene was constructed using the automated integration function of the disaster scene-generating module in the logic layer. A simulated reconstruction of the disaster scene was then realized through determination of the ground motion field and the three-dimensional coordinate transformation. The experimental results showed that the minimum mean error of the simulated earthquake disaster scene image was only 3.4, and the function and performance of the system could meet actual needs.