高延性混凝土低矮剪力墙抗震性能试验研究及抗剪承载力计算

邓明科, 李琦琦, 刘海勃, 景武斌

邓明科, 李琦琦, 刘海勃, 景武斌. 高延性混凝土低矮剪力墙抗震性能试验研究及抗剪承载力计算[J]. 工程力学, 2020, 37(1): 63-72. DOI: 10.6052/j.issn.1000-4750.2018.05.0290
引用本文: 邓明科, 李琦琦, 刘海勃, 景武斌. 高延性混凝土低矮剪力墙抗震性能试验研究及抗剪承载力计算[J]. 工程力学, 2020, 37(1): 63-72. DOI: 10.6052/j.issn.1000-4750.2018.05.0290
DENG Ming-ke, LI Qi-qi, LIU Hai-bo, JING Wu-bin. EXPERIMENTAL STUDY ON SEISMIC BEHAVIOR AND SHEAR STRENGTH CALCULATION OF HIGH DUCTILE CONCRETE LOW-RISE SHEAR WALL[J]. Engineering Mechanics, 2020, 37(1): 63-72. DOI: 10.6052/j.issn.1000-4750.2018.05.0290
Citation: DENG Ming-ke, LI Qi-qi, LIU Hai-bo, JING Wu-bin. EXPERIMENTAL STUDY ON SEISMIC BEHAVIOR AND SHEAR STRENGTH CALCULATION OF HIGH DUCTILE CONCRETE LOW-RISE SHEAR WALL[J]. Engineering Mechanics, 2020, 37(1): 63-72. DOI: 10.6052/j.issn.1000-4750.2018.05.0290

高延性混凝土低矮剪力墙抗震性能试验研究及抗剪承载力计算

基金项目: 国家自然科学基金项目(51578445)
详细信息
    作者简介:

    李琦琦(1993-),陕西咸阳人,硕士生,主要从事建筑结构抗震及抗剪研究(E-mail:liqiqi4028@126.com);刘海勃(1991-),陕西咸阳人,硕士,主要从事建筑结构抗震及抗剪研究(E-mail:1069638083@qq.com);景武斌(1989-),陕西宝鸡人,硕士,主要从事建筑结构抗震及抗剪研究(E-mail:346025123@qq.com).

    通讯作者:

    邓明科(1979-),四川南充人,教授,工学博士,博导,主要从事新材料与新型结构体系研究(E-mail:dengmingke@126.com).

  • 中图分类号: TU398.2;TU352.11

EXPERIMENTAL STUDY ON SEISMIC BEHAVIOR AND SHEAR STRENGTH CALCULATION OF HIGH DUCTILE CONCRETE LOW-RISE SHEAR WALL

  • 摘要: 该文提出采用高延性混凝土(HDC)提高低矮剪力墙的抗震性能,设计并制作了5片剪跨比均为1.0的剪力墙,并通过拟静力试验,分析轴压比、水平分布钢筋及内置钢板对低矮剪力墙的破坏形态、延性和耗能能力的影响。试验结果表明:与高强混凝土剪力墙相比,HDC剪力墙的变形能力明显提高;HDC低矮剪力墙的耗能能力、变形能力随着轴压比的增大而减小,随水平分布钢筋数量的减小而减小;HDC与钢板协同工作提高了低矮剪力墙的承载能力和耗能能力。基于软化拉-压杆模型,并考虑HDC材料的受压软化特性,该文提出了高延性混凝土低矮剪力墙抗剪承载力的计算公式,计算结果与试验结果吻合较好。
    Abstract: The usage of high ductile concrete (HDC) in low-rise shear walls was proposed to improve their seismic behavior. The effects of axial load ratio, the amount of horizontal reinforcement and steel plate on failure patterns, ductility and energy dissipation capacity of shear walls were studied by quasi-static tests of five shear walls with the shear span ratio of 1.0. The results showed that the deformability of the HDC low-rise shear walls is significantly improved compared with the high-strength concrete low-rise shear walls. The energy dissipation capacity and deformability of shear walls are improved with the increase of the axial load ratio and the decrease of the spacing of horizontal reinforcement. The collaborative work between HDC and steel plate improves the shear capacity and energy dissipation capacity of the low-rise shear walls. A formula for calculating the shear capacity of the HDC low-rise shear walls is proposed based on the softened strut-and-tie model, and the calculation values agree well with the test data.
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出版历程
  • 收稿日期:  2018-05-28
  • 修回日期:  2018-09-13
  • 刊出日期:  2020-01-24

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