Estimation of Elastic-Plastic Earthquake Response of Two-Story Steel Pure Frames under Shaking Table Tests
steel pure frame
earthquake wave pattern
elasto-plastic response analysis
The simple one-story and two-story steel pure-frame specimens were tested under the earthquake excitation increasing the maximum acceleration level, using the shaking table. The test structures consist of two columns with rigid roof and rigid floor. This research aims to investigate how the characteristic of the input earthquake wave charges the elast-plastic behavior of the frame specimen, compared with the results of the experiment and dynamic earthquake response analysis. Two types of analytical model of restoring force characteristics are employed, which are bi-linear and tri-linear models, to compare the maximum load-carrying capacity and the maximum storydisplacement of the test model. It is found that the maximum acceleration level, in which the story-displacement response of the frame get into plastic range, is influenced by the periodical property of the input earthquake wave.