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Estimating Earthquake-Induced Displacement Responses of Building Structures Using Time-Varying Model and Limited Acceleration Data
| 题名： | Estimating Earthquake-Induced Displacement Responses of Building Structures Using Time-Varying Model and Limited Acceleration Data |
| 正文语种： | eng |
| 作者： | Li, Xiaohua;Kurata, Masahiro;Wang, Yu-Hang;Nakashima, Masayoshi |
| 作者单位： | Chongqing Univ Sch Civil Engn Chongqing 400044 Peoples R China;Kyoto Univ Disaster Prevent Res Inst Kyoto 6110011 Japan;Chongqing Univ Sch Civil Engn Chongqing 400044 Peoples R China;Kyoto Univ Disaster Prevent Res Inst Kyoto 6110011 Japan |
| 关键词： | Displacement estimation;Time-varying model;Structural health monitoring;Nonlinear state estimation;E-Defense test |
| 摘要： | This paper presents a time-varying model-based method for estimating earthquake-induced displacement responses of building structures using limited acceleration data. First, a time-varying model which considers the variability of stiffness by a time-variant story local stiffness reduction factor and the variability of damping by formulating the Rayleigh damping model with a time-variant mass coefficient was developed. Then, a displacement estimation algorithm was derived on the basis of the state space representation of the time-varying model and the unscented Kalman filter. The effectiveness of the proposed method is numerically verified through nonlinear responses of a ten-story building model where the hysteretic restoring force is simulated by the Bouc-Wen model. In addition, numerical results indicated that a few sensors with low noise are more desirable for the measurement strategy. Finally, the applicability to realistic seismic monitoring of buildings was investigated through a 1:3-scale 18-story steel frame test at the E-Defense shaking table facility, which tested collapse behavior and realistic damage of high-rise steel buildings constructed in the 1990s in Japan. (C) 2021 American Society of Civil Engineers. |
| 出版年： | 2021 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 147 |
| 期： | 4 |
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