Shake-table experiment demonstrates peak base moments and high acceleration during wooden structure impact with protective steel columns, indicating key parameters to prevent building collapse.
This study examines a method to prevent buildings from collapsing in crowded wooden districts such as those found in Kyoto. Full-scale shaking table tests were conducted using a two-story wooden building and protective steel columns installed outside the structure. Column stiffness, height, and clearance were varied. The tests showed that the largest base moment appeared when only the second floor pounded with the column. When the column height was set to the second-floor level, the acceleration in the upper story reached about 2.5G. The analytical results using existing methods showed good agreement with the experimental results.
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Tsuji et al. (2026) studied this question.
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