Earthquake-oriented spatial modeling of relational coded geographical attributes

Abstract

Earthquake is a natural event that threatens living spaces on a global scale, cannot be prevented, but its destructive effect can be reduced by taking precautions. In earthquake-resistant settlement planning, determining the interaction of physical and spatial variables for site components is a primary requirement. The aim of this study is to produce a digital ground quality map that is scaled, rectified, projected and database interactively based on contribution independent of amount through positional recoding and grading methodology. Within the scope of studies towards this goal, ground quality was graded and impact assessment of residential areas in terms of earthquake exposure was carried out. Three-dimensional geographical modeling techniques were used on the digital platform and attribute effects on ground quality were mapped one by one and coded in proportion to their contribution to the result. As a result of field and laboratory studies, the analysis and modeling results on the digital map we produced were compared with the critical settlements and numerical data in the field. The impact risk of the ground was rated and detailed spatially in terms of geographical and geological characteristics. In the final stage, based on the case study, two districts from the Eskişehir-Turkey region were selected and the results of previous projects were detailed to examine the ground quality of the regions. Data of all geographical and geological parameters that contribute to ground quality as field components were graded using GIS modeling techniques and layered on the digital platform again by coding. As a result of this methodological study, a dynamic interactive digital risk map was obtained to check the real condition of buildings in terms of earthquake effects.