地震动持时对自复位预应力混凝土框架动力响应的影响

孙小云; 曾滨; 许庆; 黄林杰; 魏洋; 周臻; 谢钦; 郑开启

doi:10.13204/j.gyjzG22083020

地震动持时对自复位预应力混凝土框架动力响应的影响

doi: 10.13204/j.gyjzG22083020

孙小云¹,
曾滨²,
许庆²,
黄林杰^3, ,,
魏洋³,
周臻⁴,
谢钦⁵,
郑开启³

1. 南京交通职业技术学院, 南京 211188;
2. 中冶建筑研究总院有限公司, 北京 100088;
3. 南京林业大学土木工程学院, 南京 210037;
4. 东南大学, 东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096;
5. 贵州理工学院土木工程学院, 贵阳 550003

基金项目:

国家自然科学重点基金(52038010)

江苏省"青蓝工程"资助项目

江苏省高校自然科学基金面上项目(22KJB560007)

贵州省科技计划项目(黔科合基础[2020]1Y249)。

南京交通职业技术学院高层次人才科研启动经费项目(JG1804)

江苏省"双创博士"项目(JSSCBS20210553)

国家自然科学基金项目(52208480、52108150)

江苏省高等学校大学生创新创业训练计划项目(202012804024Y)

详细信息

作者简介:
孙小云,女,1988年出生,博士,讲师。

通讯作者:
黄林杰,男,1988年出生,博士,讲师,ljhuang@njfu.edu.cn。

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- 文章访问数: 87
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- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2022-08-30
- 网络出版日期: 2023-06-12

Investigation on the Influence of Ground Motion Duration on the Seismic Response of Self-Centering Prestressed Concrete Frames

1. Nanjing Vocational Institute of Transport Technology, Nanjing 211188, China;
2. Central Research Institute of Building and Construction, MCC Group, Beijing 100088, China;
3. College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China;
4. Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing 210096, China;
5. School of Civil Engineering, Guizhou Institute of Technology, Guiyang 550003, China

摘要

摘要: 为研究地震动持时对具有半刚性特征的自复位预应力混凝土(SCPC)框架动力响应的影响,以一8度设防地区的摩擦耗能型SCPC框架为分析算例进行分析。利用OpenSees有限元分析软件建立其有限元模型,基于规范反应谱拟合生成2组(20条)持时分别为20 s和60 s的地震波为激励,对结构进行设防烈度地震和罕遇地震下的非线性动力时程分析。结果表明:设防烈度地震水平,持时对结构动力响应的影响较小,结构可较好地实现震后立即使用的性能目标;罕遇地震水平,短持时地震作用下SCPC框架可较好地实现震后可修的性能目标,而长持时地震会导致SCPC框架的下部楼层侧移和残余位移过大,梁柱损伤加剧,结构不易实现"大震可修"性能目标。
- 地震动持时 /
- 自复位预应力混凝土 /
- 摩擦 /
- 可修性能
Abstract: To investigate the influence of ground motion duration on the seismic response of self-centering prestressed concrete (SCPC) frames characterized by semi-rigidity, a friction based SCPC frame located in the area with a seismic fortification intensity of eight degree is selected as the analytical case, and its numerical model has been built. Two sets of artificial ground motions with 20 s and 60 s duration, generated based on code response spectrum, were used as the excitation for structures. The nonlinear dynamic analyses were performed on the SCPC frame under moderate and major earthquakes through finite element model of OpenSees. Results show that the ground motion duration has minor influence on the seismic response of structures under moderate earthquakes and the structures can be used immediately. Under major earthquakes, the structure can achieve the performance objective of repairable under the earthquake with short duration, while long ground motion duration may lead to larger displacement and residual deformation of lower floors, and aggravate the damage of beam and column, the objective of repairable under major earthquake is not achieved easily.
- ground motion duration /
- self-centering prestressed concrete /
- friction /
- repairable performance

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参考文献(15)

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