夏婉秋, 鲁亮, 张会会, 徐颖超. 基于Pushover分析方法的体外预应力自复位框架抗震性能研究[J]. 工程力学, 2020, 37(S): 172-179, 186. DOI: 10.6052/j.issn.1000-4750.2019.04.S032
引用本文: 夏婉秋, 鲁亮, 张会会, 徐颖超. 基于Pushover分析方法的体外预应力自复位框架抗震性能研究[J]. 工程力学, 2020, 37(S): 172-179, 186. DOI: 10.6052/j.issn.1000-4750.2019.04.S032
XIA Wan-qiu, LU Liang, ZHANG Hui-hui, XU Ying-chao. STUDY ON THE SEISMIC PERFORMANCE OF THE EXTERNAL PRESTRESSED SELF-CENTERING FRAME WITH PUSHOVER ANALYSIS[J]. Engineering Mechanics, 2020, 37(S): 172-179, 186. DOI: 10.6052/j.issn.1000-4750.2019.04.S032
Citation: XIA Wan-qiu, LU Liang, ZHANG Hui-hui, XU Ying-chao. STUDY ON THE SEISMIC PERFORMANCE OF THE EXTERNAL PRESTRESSED SELF-CENTERING FRAME WITH PUSHOVER ANALYSIS[J]. Engineering Mechanics, 2020, 37(S): 172-179, 186. DOI: 10.6052/j.issn.1000-4750.2019.04.S032

基于Pushover分析方法的体外预应力自复位框架抗震性能研究

STUDY ON THE SEISMIC PERFORMANCE OF THE EXTERNAL PRESTRESSED SELF-CENTERING FRAME WITH PUSHOVER ANALYSIS

  • 摘要: 基于Pushover分析方法,研究了体外预应力自复位框架(External Prestressed Self-centering Frame, EPSCF)结构的抗震性能。采用ABAQUS软件建立了EPSCF结构有限元模型,并与振动台试验结果进行对比,验证了模型及建模方法的可靠性和准确性;采用Pushover分析方法评定EPSCF无控及受控结构的抗震性能并对比分析其地震响应。结果表明,设置层间阻尼器的EPSCF受控结构的等效阻尼比大幅度提升,阻尼器屈服耗能是结构的主要耗能形式,在罕遇地震作用下的结构加速度和位移响应得到了有效控制,EPSCF受控结构的抗震性能优异。

     

    Abstract: Seismic performance of EPSCF (External Prestressed Self-centering Frame) structure is investigated with the method of Pushover analysis. The finite element model of EPSCF structure is established and verified by shaking table test. Then Pushover analysis is adopted to study the seismic performance of EPSCF structures with/without dampers. Finally the seismic responses of these structures are compared. Results show that the installed dampers improve the seismic performance of EPSCF structures as the following: the damping ratio of EPSCF structure with dampers is greatly increased; compared with the conventional RC frames, the earthquake energy is dissipated mainly by the yielding of dampers instead of the plastic deformation of frame components; structural acceleration and displacement responses are effectively controlled.

     

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