角钢耗能自复位混凝土框架节点的耗能性能
Energy dissipation performance of self-centering concrete frame joint with energy-dissipation angle steel
- 土木与环境工程学报 2023年45卷第3期 页码：90-98
- 作者机构：
1.东莞市大业施工图审查有限公司，广东 东莞523000
2.重庆大学 土木工程学院，重庆400045
- 作者简介：
贺成（1982- ），男，高级工程师，主要从事混凝土结构研究，E-mail：2638084759@qq.com。
简斌（通信作者），男，博士，教授，E-mail：jianbin0215@163.com。
- 基金信息：国家自然科学基金(51878100)
DOI：10.11835/j.issn.2096-6717.2021.097
中图分类号： TU377.9收稿：2021-03-05，
纸质出版：2023-06-25
- 稿件说明：
移动端阅览
贺成, 简斌, 吴昕, 等. 角钢耗能自复位混凝土框架节点的耗能性能[J]. 土木与环境工程学报, 2023,45(3):90-98.
HE Cheng, JIAN Bin, WU Xin, et al. Energy dissipation performance of self-centering concrete frame joint with energy-dissipation angle steel[J]. Journal of Civil and Environmental Engineering, 2023, 45(3): 90-98.
贺成, 简斌, 吴昕, 等. 角钢耗能自复位混凝土框架节点的耗能性能[J]. 土木与环境工程学报, 2023,45(3):90-98. DOI： 10.11835/j.issn.2096-6717.2021.097.
HE Cheng, JIAN Bin, WU Xin, et al. Energy dissipation performance of self-centering concrete frame joint with energy-dissipation angle steel[J]. Journal of Civil and Environmental Engineering, 2023, 45(3): 90-98. DOI： 10.11835/j.issn.2096-6717.2021.097.
摘要
提出角钢耗能自复位混凝土框架设计方法，建立节点的有限元数值模型，并试验验证其有效性。对抗弯承载力比
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预应力筋不同的节点进行模拟分析，研究其在地震作用下的自复位性能、耗能能力和材料损伤等性能指标。为提高该类节点耗能能力，通过改变角钢竖肢螺杆标距做进一步研究。结果表明：角钢耗能节点具有良好的自复位性能，但耗能能力不足；减小抗弯承载力比
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，自复位能力降低、残余变形加大，但耗能能力增强。与混合连接节点相比，应适当降低节点抗弯承载力比
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的最低取值，以弥补其耗能能力的不足。角钢竖肢塑性变形是节点的主要耗能方式，且集中在竖肢的螺栓孔高度和竖肢转角位置；减小竖肢螺杆标距，且保持材料其他参数不变，将导致抗弯承载力比
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减小、截面抗弯承载力提高，节点耗能能力将随之增强。
Abstract
Design method was proposed for self-centering concrete frame joints with energy-dissipation angle steel in this study. Finite element numerical model was established and its validity was verified by experiments. After the joints with different prestressed moment capacity ratios
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were simulated
the energy dissipation capacity
self-centering performance and material damage under earthquake were studied. Changing the screw gauge distance of angle vertical leg
the measures to improve its energy-consumption capacity were further explored. The results show that the angle energy-consuming joints have perfect self-centering performance
but the energy consuming capacity is slightly insufficient. As the value of
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decreases
the residual deformation increases and the self-centering ability decreases
but the energy dissipation capacity increases. Therefore
compared with the hybrid connection joint
the minimum
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value of joint should be appropriately reduced to make up for its insufficient energy dissipation. The plastic deformation of the angle vertical leg is the main energy dissipation mode of the joint
concentrating on the height of the bolt hole and the turning of the vertical leg. If the distance between the vertical screws is reduced and the other material parameters keeps constant
it will lead to decrease in
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values
increase of the bending capacity of the section and growth of the energy dissipation capacity of the joint.
关键词
Keywords
references
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