EVALUATION OF BUILDING RECONSTRUCTION PROCESS IN CHICHI AREA BASED ON A GIS- DATABASE AFTER THE 1999 CHI-CHI EARTHQUAKE, TAIWAN

摘要

The authors have investigated the damaged Chi-Chi area several times since the 1999 Chi-Chi Earthquake in Taiwan and conducted design surveys to grasp location and dimensions of all of the buildings on purpose to make a GIS database in the area. In this paper, some recent condition and process of reconstruction are reported based on the obtained data sets, materials, and information as follows: 1) Overview of Chi-Chi and damage due to the 1999 Chi-Chi Earthquake, 2) Introduction of the essential city planning and policy for reconstruction by the governments, 3) Process of recovery and reconstruction in Chi-Chi area using the GIS database, which has constructed by the author based on IKONOS, 4) Proposal of "Spatial Reconstruction Model" to represent condition of physical environment of an area after the Earthquakes, and 5) Applying of the Spatial Reconstruction Model to public space and buildings in Chi-Chi area and considerations. The most remarkable portion of the contents is the proposal of "Spatial Reconstruction Model". It is difficult to quantitatively perceive reconstruction process of a damaged city and to compare the reconstructive condition with the previous one before the earthquake. This proposed Spatial Reconstruction Model is applied to the public space and buildings in Chi-Chi area and makes the reconstructive condition visualized. This method can be useful in future research to compare recovery process of damaged areas due to natural disasters in the World which have different social background.