Study on Horizontal First and Second Vibration Characteristics of High Rised Steel Buildings Considering Amplitude Dependency

Characteristics of the first‐mode vertical vibration of buildings based on earthquake observation records

“…Examples such as Equations ( 4) to (6) showing the qualitative tendencies of vertical vibration characteristics are few. In particular, examples like Equation (6) for comparing the vertical vibration with the horizontal direction are extremely limited.…”

“…Examples such as Equations ( 4) to (6) showing the qualitative tendencies of vertical vibration characteristics are few. In particular, examples like Equation (6) for comparing the vertical vibration with the horizontal direction are extremely limited. As described above, there are limited examples of vertical vibration characteristics, and there is still insufficient discussion on such characteristics in the contexts of multiple buildings and various structural systems.…”

“…[1][2][3]24 In recent years, studies on natural periods and damping ratios that are related to amplitude dependence, damage dependence, and aging have been published. [4][5][6][7]25 However, many of these reports are limited to the horizontal vibration characteristics. Few studies have conducted comprehensive analyses of the observation records for various structural types and buildings with respect to the vertical characteristics.…”

“…Many analysis results were reported regarding the vibration characteristics of buildings 1–3,24 . In recent years, studies on natural periods and damping ratios that are related to amplitude dependence, damage dependence, and aging have been published 4–7,25 . However, many of these reports are limited to the horizontal vibration characteristics.…”

“…[5] and steel buildings in Ref. [6]) by using earthquake records 9 based on strong‐motion observations by the Building Research Institute, National Research and Development Agency, Japan. This study follows the previous research, and focuses on vertical vibrations.…”