https://scholars.lib.ntu.edu.tw/handle/123456789/576043
標題: | Capacity-based inelastic displacement spectrum for reinforced concrete bridge columns | 作者: | Wang P.-H Ou Y.-C Chang K.-C. KUO-CHUN CHANG |
關鍵字: | Aspect ratio; Bridges; Concrete bridges; Damping; Earthquake engineering; Earthquakes; Engineering geology; Faulting; Hysteresis; Inelastic displacement; Inelastic displacement ratios; Longitudinal reinforcement; Near fault ground motion; Nonlinear time history analysis; Pulse-like ground motions; Reinforced concrete bridge columns; Transverse reinforcement; Reinforced concrete | 公開日期: | 2018 | 卷: | 3 | 起(迄)頁: | 1740-1750 | 來源出版物: | 11th National Conference on Earthquake Engineering 2018, NCEE 2018: Integrating Science, Engineering, and Policy | 摘要: | This paper aims to construct inelastic displacement spectra associated with corresponding damage state (i.e., the capacity-based inelastic displacement spectrum) for RC bridge columns using a new smooth hysteresis model proposed by the authors. Nonlinear time history analysis of SDOF systems having different hysteretic behaviors identified from the tested columns with various design parameters and subjected to 15 far-field and 15 near-fault pulse-like ground motions was conducted. The considered design parameters include the ratios of longitudinal reinforcement and transverse reinforcement, aspect ratio, as well as axial load ratio of columns, and the effects of these parameters on deteriorated hysteretic behaviors of RC bridge columns was discussed. Failure criteria was made because columns analyzed using the model proposed by the authors could fail under one or more than one of the earthquake records especially when subjected to near-fault ground motions. Furthermore, the effects of various design parameters of column and earthquake types on the computed spectra were presented and the well-known inelastic displacement ratio formula in the literatures were evaluated using the computed spectra. Finally, formulae for inelastic displacement ratio and corresponding damage state as a function of structural period, strength ratio, and various design parameters were established for far-field and near-fault ground motions, respectively. ? NCEE 2018.All rights reserved. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085625211&partnerID=40&md5=1f3ec8442e42a3b5fb7a0a78ed24a0ca https://scholars.lib.ntu.edu.tw/handle/123456789/576043 |
顯示於: | 土木工程學系 |
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