Nonlinear Similitude Law Used for Structural Seismic Test

Abstract eng:
The Performance-Based Seismic Design requires more accurate description for the nonlinear behavior of structure during large earthquake. Actual prototype structures tend to be very heavy and costly. Small-scaled models are usually used for shaking table test where large-scaled models for pseudodynamic test. In any case the elastic behavior can be easily simulated simply by employing classic similitude laws. However the classic similitude laws are derived on the basis of elastic theory, they can not be used to predict nonlinear behavior (such as cracks or collapse) of structures. This paper presents some suggestions as a compliment. Three quantities, i.e. Length ( l ), Elastic modulus ( E ), and Equivalent densensity ( ρ ) are used as fundamental variables, usually only the E is related to nonlinear deformation. The value of E will vary depending on how much nonlinear deformation occurred during an earthquake.

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