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A shaking table test of one-fourth scaled 20-story RC building has been conducted at the E-Defense to grasp the seismic performance of super high-rise RC buildings under long period seismic ground motions. In this study, pre-analysis of the building was conducted and the results were compared with the test results to verify the validity of the earthquake response analysis method. In this paper, it is shown that the analytical results on the story drift and shear became the underestimate for the test results for the larger motions such as the maximum story drift angle exceeded 0.01 rad.. On the other hand, it is also described that the accuracy of the analysis for the higher level of ground motions is improved by modifying the width of floor slabs contributing to the flexural strength of beams and the modeling of the hysteresis loops of the beams in the analytical program.

EARTHQUAKE RESPONSE ANALYSIS OF A 20-STORY RC BUILDING UNDER LONG PERIOD SEISMIC GROUND MOTION