奥氏体型不锈钢受弯构件截面分类研究

宁克洋; 杨璐; 张允; 林子倩; 郭玉莹

doi:10.6052/j.issn.1000-4750.2022.01.0037

奥氏体型不锈钢受弯构件截面分类研究

doi: 10.6052/j.issn.1000-4750.2022.01.0037

北京工业大学城市与工程安全减灾教育部重点实验室，北京 100124

基金项目: 国家自然科学基金优秀青年科学基金项目(51922001)；国家自然科学基金创新研究群体项目(51421005)

详细信息

作者简介:
宁克洋(1992−)，男，安徽人，博士生，主要从事钢结构方面的研究(E-mail: ningkeyang@foxmail.com)

张　允(1997−)，女，河南人，硕士生，主要从事钢结构方面的研究(E-mail: zhangyunSCH@163.com)

林子倩(1998−)，女，河北人，硕士生，主要从事钢结构方面的研究(E-mail: ziqianlin_lydia@163.com)

郭玉莹(1998−)，女，河北人，硕士生，主要从事钢结构方面的研究(E-mail: 827651894@qq.com)

通讯作者:
杨　璐(1982−)，男，湖北人，教授，博士，博导，主要从事钢结构和组合结构方面的研究(E-mail: lyang@bjut.edu.cn)

中图分类号: TU391
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- HTML全文浏览量: 53
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- 被引次数: 0
出版历程
- 收稿日期: 2022-01-07
- 修回日期: 2022-04-11
- 录用日期: 2022-04-15
- 网络出版日期: 2022-04-15
- 刊出日期: 2023-09-06

RESEARCH ON SECTION CLASSIFICATION OF AUSTENITIC STAINLESS STEEL FLEXURAL MEMBERS

The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China

摘要

摘要: 为对不锈钢受弯构件截面分类进行研究，借助有限元软件ABAQUS建立了不锈钢焊接工字形和箱形截面构件有限元模型，并基于试验结果验证了有限元模型的有效性。基于有限元模型开展了大量的参数分析，由此对欧洲不锈钢规范EN 1993-1-4+A2和《钢结构设计标准》(GB 50017−2017)中截面板件宽厚比分类限值的合理性和适用性进行了评价。在考虑截面组成板件的相关性基础上，提出了针对奥氏体型不锈钢受弯构件截面分类方法和不同截面板件宽厚比等级及限值。
- 不锈钢 /
- 受弯构件 /
- 截面分类 /
- 宽厚比 /
- 有限元研究
Abstract: In order to study the section classification of stainless steel flexural members, the finite element (FE) software ABAQUS was used to establish the FE model of stainless steel welded I-section and box-section members, and the validity of the FE models was verified by the experimental results. Using the FE model, a large number of parameter analyses were carried out, and the rationality and applicability of the classification limit of the width-to-thickness ratio of section plates in European stainless steel code EN 1993-1-4+A2 and standard for design of steel structures GB 50017−2017 were evaluated. By considering the correlation of section components, the paper proposed the section classification method, width-to-thickness ratio grade and limit value of section plates for austenitic stainless steel flexural members.
- stainless steel /
- flexural members /
- section classification /
- width-to-thickness ratio /
- finite element research

HTML全文

图 1 四点弯加载装置^[12]

Figure 1. Four-point bending test setup

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图 2 四点弯加载有限元模型

Figure 2. Four-point bending loading finite element model

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图 3 三点弯加载装置^[13]

Figure 3. Three-point bending test setup

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图 4 三点弯加载有限元模型

Figure 4. Three-point bending loading finite element model

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图 5 有限元模型中残余应力分布

Figure 5. Residual stress distribution in finite element model

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图 6 有限元失稳模态和试验结果对比

Figure 6. Comparison between FE and test failure modes

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图 7 有限元和试验结果对比

Figure 7. Comparison between FE and test result

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图 8 有限元模型中残余应力分布

Figure 8. Residual stress distribution in finite element model

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图 9 有限元失稳模态和试验结果对比^[7]

Figure 9. Comparison of FE and test failure modes

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图 10 试验和有限元荷载-水平位移曲线对比^[8]

Figure 10. Comparison between FE and test load-lateral deformation curves

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图 11 工字形3类截面

Figure 11. Class 3 for I-section

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图 12 箱形3类截面

Figure 12. Class 3 for box-section

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图 13 工字形2类截面

Figure 13. Class 2 for I-section

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图 14 箱形2类截面

Figure 14. Class 2 for box-section

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图 15 工字形1类截面

Figure 15. Class 1 for I-section

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图 16 箱形1类截面

Figure 16. Class 1 for box-section

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表 1 受弯构件截面板件宽厚比等级及限值

Table 1. Width-to-thickness ratio grade and limit value of plate of flexural members section

EN 1993-1-4+A2		Class 1	Class 2		Class 3	Class 4
工字形截面	腹板	72ε	76ε		90ε	−
工字形截面	翼缘	9ε	10ε		14ε	−
箱形截面	腹板	72ε	76ε		90ε	−
箱形截面	翼缘	33ε	35ε		37ε	−

GB 50017−2017		S1	S2	S3	S4	S5
工字形截面	腹板	65ε_k	72ε_k	93ε_k	124ε_k	250
工字形截面	翼缘	9ε_k	11ε_k	13ε_k	15ε_k	20
箱形截面	腹板	65ε_k	72ε_k	93ε_k	124ε_k	250
箱形截面	翼缘	25ε_k	32ε_k	37ε_k	42ε_k	−
注：ε = (235E/ (210 000f_y))^0.5,ε_k = (235/ f_y)^0.5。

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表 2 有限元和试验承载力对比结果

Table 2. Comparison between FE and test ultimate resistances

加载方式	试件	试验极限弯矩 M_{u, Test}/(kN·m)	有限元极限弯矩 M_{u, FE}/(kN·m)	M_{u, FE}/ M_{u, Test}
四点弯加载^[12]	I-200×100×5×5-B1	50.6	51.8	1.02
四点弯加载^[12]	I-150×150×5×5-B1	45.3	45.7	1.01

加载方式	试件	试验极限荷载 F_{u, Test}/kN	有限元极限荷载 F_{u, FE}/kN	F_{u, FE}/ F_{u, Test}
三点弯加载^[13]	I-304-158-60	83.40	83.50	1.00
三点弯加载^[13]	I-304-128-60	61.89	61.70	1.00
平均值	−	−	−	1.01

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表 3 有限元和试验承载力对比结果^[8]

Table 3. Comparison between FE and test ultimate resistances

试件编号	试验极限荷载P_{u, test}/kN	有限元极限荷载P_{u, FE}/kN	P_{u, FE} /P_{u, test}
S304-3000-1	302.2	303.6	1.00
S304-3000-2	236.2	247.9	1.05
S304-4000-1	248.2	244.8	0.99
S304-4000-2	215.4	225.2	1.05
平均值	−	−	1.02

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表 4 提出的不锈钢受弯构件截面板件宽厚比等级及限值

Table 4. Proposed width-to-thickness ratio grade and limit value of plate of stainless steel flexural members section

提出的		SS1	SS2	SS3	SS4
工字形截面	腹板	73ε_k	89ε_k	102ε_k	−
工字形截面	翼缘	10ε_k	12ε_k	14ε_k	−
箱形截面	腹板	65ε_k	80ε_k	98ε_k	−
箱形截面	翼缘	26ε_k	33ε_k	40ε_k	−
注：ε_k = (235/ f_y)^0.5。

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