https://scholars.lib.ntu.edu.tw/handle/123456789/598524
標題: | Pseudostatic analysis for seismic responses of extended piles considering inertial and kinematic effects | 作者: | Chiou J.-S Fu Y.-W Lee Y.-W. JIUNN-SHYANG CHIOU |
關鍵字: | Extended piles;Inertial loading;Kinematic loading;Pseudostatic analysis;Seismic loading;Structure–pile–soil interaction;Damping;Kinematics;Loading;Loads (forces);Seismic response;Soils;Displacement profiles;Extended pile;Ground displacement;Inertial loadings;Pile soil interaction;Pseudo-static analysis;Pseudostatic;Seismic loadings;Piles | 公開日期: | 2022 | 卷: | 252 | 來源出版物: | Engineering Structures | 摘要: | This study proposes a pseudostatic approach for analyzing the seismic response of an extended pile under inertial and kinematic loadings. A structure–pile–soil pushover model is established. In the model, the inertial loading is simulated as a static force that is applied at the pile head, and the kinematic loading is simulated by imposing a ground displacement profile on the pile–soil interaction springs. This approach, based on a dynamic structure–pile–soil interaction model, comprises three aspects: inertial loading, kinematic loading, and combination of inertial and kinematic loadings. For the inertial loading, the capacity spectrum method is applied to obtain the maximum acceleration of the superstructure mass, using a weighted motion that combines contributions of excitations at various soil depths and an equivalent system damping ratio in terms of linear viscous damping, radiation damping, and hysteretic damping. For the kinematic loading, the ground displacement profile corresponding to the maximum ground surface displacement is analyzed through ground response analysis. For the combined action of inertial and kinematic loadings, because their maximum effects may not occur simultaneously, we construct the relationships of participation factors with the ratio of the excitation frequency to the system frequency. Examples are used to demonstrate the applicability of the proposed method. ? 2021 Elsevier Ltd |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119425922&doi=10.1016%2fj.engstruct.2021.113572&partnerID=40&md5=602bb54e9d177922c2230d3c63f1bc4b https://scholars.lib.ntu.edu.tw/handle/123456789/598524 |
ISSN: | 01410296 | DOI: | 10.1016/j.engstruct.2021.113572 |
顯示於: | 土木工程學系 |
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