Abstract: For a disaster whose scale
includes an urban area, it is difficult to study it with physical experiments.
Thus, numerical simulation is a very efficient tool for such problem.
This paper aims at developing an integrated urban earthquake simulation
system (UESS) that uses GIS as the model source, CAD as the model generating
tools, FEA as damage prediction and VR as the post-process platform.
An automatic procedure is developed to buildup the 3D structural model
of buildings in an urban area, as well as to simulate their earthquake
performances, from the digital map of GIS. And the simulation results
are presented in an integrated interface with a GIS view-port for position
finding, a CAD view-port for 3D structural damage identification and
a VR view-port for 3D dynamic structural vibration display. An urban
example with more than 7000 buildings is select to demonstrate the feasibility
of proposed system.