3D VISUALIZATION FOR EARTHQUAKE-INDUCED SITE LIQUEFACTION POTENTIAL BASED ON VOLUME RENDERING AND GIS TECHNOLOGY
The research on visual 3D modeling for the earthquake-induced site liquefaction potential is to resolve the problem of simulating the potential risk of earthquake-induced site liquefaction spatially by 3D reality graphics.And it can be applied to the urban earthquake prevention and disaster mitigation. Firstly, the empirical equation of cyclic resistance ratio CRR of saturated sands with different probability levels is utilized to evaluate the earthquake-induced site liquefaction potential. Secondly, a block data structure is adopted to describe the 3D liquefaction potential entity. Thirdly, visual 3D visualization modeling for the earthquake-induced site liquefaction potential can be realized based on the Kriging interpolation method and volume rendering technique. The research described in this paper shows that: (1) When 3D liquefaction potential entity is partitioned by the block data model, the Kriging method can be adopted to realize 3D interpolation.Therefore, the latent distribution of the site liquefaction potential beyond the observation boreholes can be evaluated. (2) Based on the probability evaluation results and volume rendering technique, the Kriging interpolation results are displayed in different color marks to indicate the risk extent of the site liquefaction potential. Thereby, the spatial distributing characteristics and variety trend of the site liquefaction potential can be displayed in the 3D graphic form. And also, the 2D profile cutting and 3D body incision can be generated automatically.
earthquake-induced liquefaction potential sand liquefaction probabilistic estimation method 3D Modeling Kriging interpolation method volume rendering GIS
Hao Tang Guo-xing Chen
Dept. Of Civil Engineering, Institute of Geotechnical Engineering, Nanjing, China
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）