CORRELATION BETWEEN SHAKING TABLE AND PSEUDO DYNAMIC RESPONSES : Earthquake response simulation capacity of pseudo dynamic testing

This paper reports an experimental investigation on the capacity of the pseudo dynamic testing technique to simulate the earthquake response behavior of structural systems. For this purpose, two types of steel structural systems : a two story unbraced frame system and a two story braced frame system, were tested. For each type, two identical specimens were fabricated; then, one was tested with a shaking table device, whereas the other tested using the pseudo dynamic testing technique. By direct comparison between the two response results, it was found 1) that the pseudo dynamic testing is a promising technique to directly simulate the earthquake response behavior of structural systems, 2) that the notable difference between the results was observed in the plastic flow of the displacement response, and 3) that the difference most probably had been caused because of the difference, although slight, in the hysteresis between the two responses.