文章基本信息

标题：Characteristics of the first‐mode vertical vibration of buildings based on earthquake observation records
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作者：Takuya Kinoshita ; Naohiro Nakamura ; Toshihide Kashima 等
期刊名称：Japan Architectural Review
电子版ISSN：2475-8876
出版年度：2021
卷号：4
期号：2
页码：290-301
DOI：10.1002/2475-8876.12208
摘要：This study focuses on the first‐modal natural periods and damping ratios of buildings in the vertical direction. An auto regression and exogenous (ARX) model is used to identify each vertical natural period and damping ratio. The targets comprise over 3,000 earthquake observation records for 18 buildings comprising reinforced concrete, steel and reinforced concrete, and steel structures. The identified values are summarized for each structural type, and their characteristics are discussed in view of the input amplitude and height of the buildings, compared to the natural period and damping ratio in the horizontal direction. Based on the results, a simple estimation equation is provided for the first‐mode vertical natural period.
关键词：amplitude dependency;ARX model;RC and SRC buildings;steel buildings;vertical damping ratio;vertical natural period