Abstract
We propose a meta-modeling approach for more reliable seismic damage assessment of large pipe networks, and implementation of automated system to realize it. Due to various difficulties in assessing seismic damage of large pipe networks, empirical relations are being used in seismic damage predictions. Though these empirical models are continuously updated, their reliability is low. On the other hand, sophisticated nonlinear FEM models and advanced materials are being used in designing new pipe lines. More rational, and possibly more reliable, damage assessment is possible, if the advanced analysis methods used in the seismic resistance design are employed for damage assessments. However, analysis of large pipe networks with sophisticated FEM models is challenging. Meta-modeling makes it possible to make efficient seismic damage assessment of large networks without loss of accuracy. Meta-modeling uses models of different fidelity for modeling the same structure, depending on the required accuracy. An automated system is developed for analyzing the seismic performance of pipe networks, with meta-modeling approach. The details of the automated system and a simple example to demonstrate the application of the automated meta-modeling system are presented.
