短肢剪力墙抗震性能理论分析与数值模拟

刘成清; 韦小丹; 倪向勇

doi:10.3969/j.issn.0258-2724.2016.04.013

短肢剪力墙抗震性能理论分析与数值模拟

doi: 10.3969/j.issn.0258-2724.2016.04.013

基金项目:

国家自然科学基金资助项目(51278428)

中央高校基本科研业务费专项资金资助项目(2682014CX066)

详细信息

作者简介:
刘成清(1976-),男,副教授,博士,研究方向为工程结构抗震与抗冲击,电话:13980773251,E-mail:lcqjd@swjtu.cn

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出版历程
- 收稿日期: 2015-04-03
- 刊出日期: 2016-08-25

Seismic Performance of Short-Pier Shear Walls:Theoretical Analysis and Numerical Simulation

摘要

摘要: 为研究短肢剪力墙的抗震性能,首先考虑边缘约束构件的影响,利用平截面假定和短肢剪力墙正截面界限配筋,建立了短肢剪力墙墙肢轴压比限值的理论计算公式,并对短肢剪力墙抗震性能研究的试验进行数值模拟.然后利用轴压比计算理论获得试验试件的轴压比限值,通过改变短肢剪力墙数值模型的墙肢轴压比数值,分别研究短肢剪力墙墙肢轴压比在大于或小于墙肢轴压比限值时对其抗震性能的影响.最后结合数值模拟分析了短肢剪力墙在不同截面高厚比下的抗震性能.研究表明:骨架曲线各特征点的计算值与试验值的比值在0.86~1.08之间,数值模拟结果与试验结果吻合较好;短肢剪力墙墙肢轴压比小于轴压比限值时,轴压比每提高0.1,其最大水平承载力提高约7.81%,延性降低约4.52%;短肢剪力墙墙肢轴压比大于轴压比限值时,轴压比每提高0.1,其最大水平承载力降低约5.50%,延性降低约6.85%,同时验证了墙肢轴压比限值计算理论的准确性;截面面积相同时,墙肢截面高厚比越大,其抗震性能越好.
- 平截面假定 /
- 短肢剪力墙 /
- 墙肢轴压比 /
- 截面高厚比 /
- 抗震性能
Abstract: To research the seismic performance of short-pier shear walls, firstly, influences of the constraints at the edges were considered, and the theoretical calculation equations of the ultimate axial compression ratio were established based on the plane section assumption and critical reinforcement of short-pier shear walls sections, in addition, the numerical simulation was conducted to study the seismic performance of short-pier shear walls. Then the ultimate axial compression ratio was obtained by the calculation theory. through changing the axial compression ratio of numerical models, influences of the axial compression ratio on seismic performance of short-pier shear walls were analyzed when the axial compression ratio was smaller or larger than the ultimate axial compression ratio. At last, the seismic performance of short-pier shear walls with different height-thickness ratios was studied. Results show that the ratios of the calculated and test results of skeleton curves characteristic points are between 0.86 and 1.08, and the numerical simulation results have a good agreement with the test results; when the axial compression ratio of short-pier shear walls is less than the ultimate axial compression ratio, with the axial compression ratio increasing 0.1, the horizontal bearing capacity increases about 7.81%, and the ductility reduces about 4.52%; when the axial compression ratio of short-pier shear walls is more than the ultimate axial compression ratio, with the axial compression ratio increasing 0.1, the horizontal bearing capacity reduces about 5.50%, and the ductility reduces about 6.85%, the accuracy of the calculation theory for ultimate axial compression ratio is verified. In the case of equal section areas, shear walls with a big cross section height-thickness ratio can have a good seismic performance.
- plane section assumption /
- short-pier shear wall /
- axial compression ratio of shear wall /
- cross section height-thickness ratio /
- seismic performance

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参考文献(16)

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文章访问数: 575
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短肢剪力墙抗震性能理论分析与数值模拟

doi: 10.3969/j.issn.0258-2724.2016.04.013

作者简介: 刘成清(1976-),男,副教授,博士,研究方向为工程结构抗震与抗冲击,电话:13980773251,E-mail:lcqjd@swjtu.cn

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Seismic Performance of Short-Pier Shear Walls:Theoretical Analysis and Numerical Simulation

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目录

作者简介:
刘成清(1976-),男,副教授,博士,研究方向为工程结构抗震与抗冲击,电话:13980773251,E-mail:lcqjd@swjtu.cn