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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/84497


    Title: 新世代鋼結構耐震性能提升設計研發及驗證-具可調勁度斜撐之高性能鋼結構耐震設計研發及驗證(子計畫三)(I);Seismic Performance of Steel Moment-Resisting Frames with Steel Hook Dampers and Adjustable-Stiffness Braces
    Authors: 許協隆
    Contributors: 土木工程學系
    Keywords: 彎鉤消能器;可調勁度斜撐;耐震性能;steel hook damper;adjustable stiffness;seismic performance
    Date: 2020-12-08
    Issue Date: 2020-12-09 09:28:15 (UTC+8)
    Publisher: 科技部
    Abstract: 鋼結構系統具有良好之韌性,惟其因結構勁度較低,在側力作用下將引致較大位移,就功能設計考量而言,此將限制其應用性。為進一步提升結構設計效能,本研究參酌歷年研究結果,研擬提出以分段組合斜撐配合具偏心距之彎鉤消能器設計,藉由不同偏心距及不同彎鉤消能器尺度,形成可調整勁度、避免挫屈、同時具有有效消能機制之斜撐設計,並將之配置於鋼構架,有效提升結構耐震性能。此設計中,分段斜撐為傳力機制,應在承載過程中保持彈性,由高延展鋼板製成之彎鉤消能器則可藉預先給定之偏心距,有效調整其可提供於構架之勁度,此傳力途徑藉撓曲提供易於變形之承載機制,除避免消能元件之挫屈,亦可獲致穩定之承載行為,因此,對鋼結構耐震性能提升,應有甚大之助益。本研究擬以三年時間,針對具可調勁度斜撐之高性能鋼結構耐震設計進行研發及驗證,並由此結構之承載特性,研擬可行之結構設計資訊。本研究第一年將針對彎鉤消能器及配置不同尺度彎鉤消能器之可調勁度斜撐進行有限元素分析及反復載重試驗,第二年則針對配置不同尺度可調勁度斜撐之鋼結構進行反復載重試驗及承載性能評估,第三年除再選取部分與第二年配置不同寬厚比彎鉤消能器之斜撐構架,進行反復載重試驗,以完善最後驗證,並針對具可調勁度斜撐之多層鋼結構,分別應用遠域地震及近域地震進行動力分析,同時整合前述試驗結果及相關理論分析,提出有效之設計建議。 ;Steel structures possess high strength and significant ductility, thus are effective structural forms for earthquake-resistant designs. Structural designs using special moment resisting frames (SMRF) are usually considered when high ductility is required. In order to improve the seismic performance of the structures, an improved brace design that incorporated steel hook dampers and segmental brace members to form an adjustable-stiffness brace was proposed. This study is focused on the performance improvement of moment-resisting frames with steel hook dampers and adjustable-stiffness braces. A series of tests on steel hook dampers, adjustable-stiffness braces and steel frames with the proposed strengthening schemes under cyclic loading will be conducted. Test results will be used to evaluate the frame strength, structural stiffness and the structural ductility so that the efficiency of the proposed strengthening scheme in seismic performance improvement can be justified.
    Relation: 財團法人國家實驗研究院科技政策研究與資訊中心
    Appears in Collections:[土木工程學系 ] 研究計畫

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