可恢复功能的箱形钢墩柱受力性能研究

吕琨德; 李海锋; 谢彩霞; 骆杰鑫

doi:10.13204/j.gyjz202001026

可恢复功能的箱形钢墩柱受力性能研究

doi: 10.13204/j.gyjz202001026

1. 华侨大学土木工程学院, 福建厦门 361021;
2. 福建省结构工程与防灾重点实验室, 福建厦门 361021

基金项目:

国家自然科学基金资助项目（51778248，51408240）；福建省自然科学基金（2018J01075）；华侨大学研究生科研创新基金资助项目（17013086027）。

详细信息

作者简介:
吕琨德,男,1995年出生,硕士研究生。

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出版历程
- 收稿日期: 2019-07-20

RESEARCH ON THE MECHANICAL PROPERTIES OF EARTHQUAKE-RESILIENT BOX-SHAPED STEEL PIERS

LYU¹,
Kunde^{1,2
, ,},
LI¹,
Haifeng¹

1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China;
2. Key Laboratory for Structure Engineering and Disaster Prevention of Fujian Province, Xiamen 361021, China

摘要

摘要: 为了研究可恢复功能的箱形钢墩柱受力机理,采用ANSYS软件对新型箱形钢墩柱进行反复轴向拉压作用下的数值分析。通过有限元模拟结果与新型箱形钢墩柱的轴压试验结果的对比,验证了有限元模拟方法的可靠性。在此基础上,探讨低屈服点耗能钢板的高度、宽度及厚度等因素对新型箱形钢墩柱骨架曲线、延性系数及耗能能力的影响规律。研究结果表明:低屈服点钢板的宽度和厚度对箱形钢墩柱的承载能力影响较大,试件承载能力随低屈服点钢板宽度的增大而减小,随其厚度的增大而增大,低屈服点钢板的高度对新型箱形钢墩柱的承载能力影响较小;在试件1/3~5/7高度范围内,增大低屈服点钢板高度,箱形钢墩柱耗能能力提高;在1~1.5倍壁板厚度范围内,增大低屈服点钢板厚度,箱形钢墩柱耗能能力提高,增大低屈服点钢板宽度,箱形钢墩柱耗能能力下降。
- 箱形钢墩柱 /
- 低屈服点钢 /
- 数值分析 /
- 受力性能 /
- 耗能
Abstract: In order to study the mechanical properties of earthquake-resilient box-shaped steel piers, the numerical analysis of the new box-shaped steel piers was carried out under axial tension and compression by ANSYS software. The axial compression tests and numerical simulation results of the new box-shaped steel piers were compared to verify the reliability of the finite element simulation method. On this basis, the influences of the height, width and thickness of the low-yield point energy-consuming steel plates on the skeleton curves, ductility coefficient and energy dissipation capacity of the new box-shaped steel piers were discussed. The results showed that the width and thickness of the steel plates with low-yield point had a great influence on the bearing capacity of the box-shaped steel piers. The bearing capacity of the specimens decreased with the increase of the width of the steel plates with low yield point, and increased with the increase of the thickness. The height of the low-yield point steel plates had little effect on the bearing capacity of the new box-shaped steel piers. If the height of the steel plates with low-yield point increased in the range of 1/3~5/7 times of the specimen, the energy dissipation capacity of the box-shaped steel piers would be improved. While the thickness of the steel plates with low-yield point increased in the range of 1~1.5 times the thickness of the web plates, the energy dissipation capacity of the box-shaped steel piers would also be improved. When the width of the steel plates with low-yield point increased, the energy dissipation capacity of the box-shaped steel piers decreased.
- box steel piers /
- low yield point steel /
- numerical analysis /
- mechanical properties /
- energy dissipation

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参考文献(15)

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