META-MODELING FOR CONSISTENT SEISMIC RESPONSE ANALYSIS

Abstract eng:
Depending on the numerical accuracy required, we can choose a simple mass spring system or a solid element model in carrying out structural seismic response analysis. The important issue is the consistency of the models, and meta-modeling proposed by the authors gives a solution to this issue. Presuming that continuum mechanics is the foundation of structural seismic response, for which a suitable Lagrangian is formulated, a model is constructed by making suitable mathematical approximations, and hence the model is consistent in the sense that it is used to solve the identical physical problem of estimating structural seismic responses. In this paper, we explain the basic concepts of meta-modeling and present numerical experiments of constructing consistent models for actual structures such as a large scale tunnel and a freeway bridge.

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