陈嵘, 雷俊卿. 变轴力钢筋混凝土墩柱抗震性能研究[J]. 工程力学, 2018, 35(S1): 239-245. DOI: 10.6052/j.issn.1000-4750.2017.04.S046
引用本文: 陈嵘, 雷俊卿. 变轴力钢筋混凝土墩柱抗震性能研究[J]. 工程力学, 2018, 35(S1): 239-245. DOI: 10.6052/j.issn.1000-4750.2017.04.S046
CHEN Rong, LEI Jun-qing. Study on the seismic behavior of RC bridge piers under variable axial load[J]. Engineering Mechanics, 2018, 35(S1): 239-245. DOI: 10.6052/j.issn.1000-4750.2017.04.S046
Citation: CHEN Rong, LEI Jun-qing. Study on the seismic behavior of RC bridge piers under variable axial load[J]. Engineering Mechanics, 2018, 35(S1): 239-245. DOI: 10.6052/j.issn.1000-4750.2017.04.S046

变轴力钢筋混凝土墩柱抗震性能研究

Study on the seismic behavior of RC bridge piers under variable axial load

  • 摘要: 为研究墩柱在变轴力往复荷载下的抗震性能,制作6个试件,1个承受恒定轴力,5个承受变轴力,对比研究恒定轴力和变轴力,变轴力墩柱的不同纵筋配筋率、箍筋体积配箍率、高宽比对墩柱抗震性能的影响,试验表明轴力变化对位移、残余变形、破坏程度有较大影响。建立OpenSees纤维模型进行数值模拟,理论值与试验值符合较好。根据试验和理论分析总结规律,基于性能化设计方法给出建议。

     

    Abstract: To study the seismic performance of RC bridge piers under variable axial force, six specimens are prepared, of which one was under constant axial load and the other five with different longitudinal reinforcement ratios, volumetric percentages of stirrups and shear span ratios, were subjected to variable axial force. The test results indicate that the variable axial force has apparent effect on the displacement, residual deformation, and the level of destruction of RC bridge piers. The fiber model was applied to simulate the piers under variable axial load and the theoretical results agree well with the experimental results. According to the performance-based seismic design, suggestions are proposed to consider varying axial load during design.

     

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