受损H型钢梁力学性能静态应变时效影响研究

王之瀚; 张宝军; 杨怡亭; 王燕; 李珂皓

doi:10.13206/j.gjgS23040301

受损H型钢梁力学性能静态应变时效影响研究

doi: 10.13206/j.gjgS23040301

青岛理工大学土木工程学院, 山东青岛 266033

基金项目:

国家自然科学基金(青年)项目(51908306)

详细信息

作者简介:
王之瀚,硕士,主要从事高强度结构钢材料性能及其连接节点方面的研究。Email:al8561324519@163.com

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出版历程
- 收稿日期: 2023-04-03
- 网络出版日期: 2024-09-19

Experimental and Numerical Research on Partially Damaged H-Type Steel Beam Affected by Effects of Static Strain Aging

School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China

摘要

摘要: 既有钢结构建筑受损待修复期间，钢材受静态应变时效影响，其材料性能发生显著变化，致使受损钢结构修复后整体受力性能改变。为研究静态应变时效对受损钢梁受弯力学性能的影响，设计了3根Q355B热轧H型钢梁，通过两阶段加载试验方法完成受损钢梁应变时效影响试验研究，并基于试验结果建立ABAQUS有限元分析模型。通过二次模型导入和材性重定义，实现钢材经应变时效影响前后的不同材料属性建模，完成受损钢梁应变时效影响的有限元模型建立及参数分析。研究结果表明：受损钢梁的受力性能由残余变形和钢材力学性能变化两者共同决定，当钢梁发生损伤程度较小时，钢材力学性能变化不显著，钢梁因残余变形而极限承载力降低；当钢梁损伤变形导致部分截面应变达到4.5%及以上时，不再适合修复后继续使用。
- 热轧H型钢梁 /
- 应变时效 /
- 部分损伤 /
- 抗弯性能
Abstract: During the period of waiting for repair in a damaged steel structure building, the material properties of the steel are significantly affected by static strain aging, resulting in a change in the overall mechanical properties of the repaired steel structure after restoration. In order to study the effect of strain aging on the mechanical properties of steel beams, three Q355B hot-rolled H-shaped steel beams were designed, and the strain aging effect of damaged steel beams was studied by two-stage loading test method. Based on the test results, the ABAQUS finite element model was established to analyze the mechanical properties of the damaged steel beams after strain aging. An ABAQUS finite element analysis model was established by importing a secondary model and redefining material properties to model the different material properties of the steel before and after strain aging, and subsequently, the finite element model of the damaged steel beam affected by strain aging was established and the parametric analysis was carried out. The results show that the mechanical properties of the damaged steel beam are determined by the residual deformation and the mechanical properties of the steel. When the damage degree of the steel beam is small, the mechanical properties of the steel beam do not change significantly, and the ultimate bearing capacity of the steel beam decreases due to the residual deformation. When the strain of part section reaches 4.5% or above due to the damage and deformation of steel beam, it is no longer suitable for further use after repair.
- hot-rolled H-shaped steel beam /
- strain aging /
- partially damaged /
- flexural behavior

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参考文献(26)

[1]	刘瑞堂, 刘锦云. 金属材料力学性能[M].哈尔滨:哈尔滨工业大学出版社, 2015.
[2]	杨军, 毕宗岳, 南黄河, 等. X90高强管线钢的应变时效行为和敏感温度[J]. 材料研究学报, 2021,35(10):769-777.
[3]	高杉杉, 邸新杰, 利成宁, 等. 应变时效对高应变管线钢焊接接头断裂韧性的影响[J]. 焊接学报, 2021,42(10):22-28.
[4]	江良煊, 何福善, 郑开魁, 等. 冷轧压下量对汽车车身用高强不锈钢组织和力学性能的影响[J]. 热加工工艺, 2022(5):49-52.
[5]	赵圣诗, 李维娟, 张冲冲, 等. 预变形对低碳钢应变时效的影响[J]. 材料热处理学报, 2016,37(12):127-131.
[6]	王鹏龙,李辉,曹零勇, 等. 预时效对6016铝合金烘烤硬化性能的影响[J]. 金属热处理, 2018,43(4):129-133.
[7]	侯登义, 徐洪庆, 陈晔. NVB级船板应变时效敏感性试验[J]. 钢铁钒钛, 2008(1):34-37.
[8]	郭伟国, 史飞飞, 刘凤亮. 高强度船体结构钢DH36的动态力学性能研究[J]. 兵工学报, 2009,30(增刊2):203-207.
[9]	Cottrell A. Dislocations and plastic flow in crystals[J]. American Journal of Physics, 1954,22(4):33-52.
[10]	Epstein S, Cutler H J, Frame J W. Vanadium treated, non-aging, rimming steel for deep drawing quality sheet[J]. JOM, 1950,2(6):830-834.
[11]	Loporcaro G, Pampanin S, Kral M V. Long-term strain-ageing effects on low-carbon steel reinforcement[J/OL]. Construction and Building Materials, 2021[2021-08-21].https://www.sciencedirect.com/journal/construction-and-building-materials/vol/228/suppl/C.
[12]	王建军, 袁康博, 张晓琼, 等. 第三型应变时效的提出与研究进展[J]. 爆炸与冲击, 2021,41(5):4-14.
[13]	中华人民共和国住房和城乡建设部. 建筑抗震设计标准:GB/T 50011-2010[S]. 北京:中国标准出版社, 2024.
[14]	李钢,薛璐,余丁浩,等. 考虑交通阻滞的区域建筑震后功能恢复能力评估[J]. 土木工程学报, 2021,54(12):1-11.
[15]	Loporcaro G, Cuevas A, Pampanin S, et al. Strain-ageing effects on the residual low-cycle fatigue life of low-carbon steel reinforcement[J]. Materials and Structures, 2022,55(2):35-55.
[16]	Loporcaro G, Pampanin S, Kral M. Estimating plastic strain and residual strain capacity of earthquake-damaged steel reinforcing bars[J]. Journal of Structural Engineering, 2018,144(5):23-34.
[17]	Sajjad H, Amin H, Frank C, et al. Strain ageing effect on the temperature dependent mechanical properties of partially damaged structural mild-steel induced by high strain rate loading[J]. Construction and Building Materials, 2016,123:454-463.
[18]	Sajjad H, Amin H, Frank C, et al. Effect of strain ageing on the mechanical properties of partially damaged structural mild steel[J]. Construction and Building Materials, 2015,77:83-93.
[19]	张忠良. 应变时效对高强建筑用热轧H型钢低周疲劳性能的影响[J]. 锻压技术, 2014,39(7):102-105.
[20]	姜志鹏. 应变时效对Q345钢及对接焊缝力学性能的影响研究[D]. 青岛:青岛理工大学, 2018.
[21]	李珂皓. 考虑应变时效影响Q460高强钢及其对接焊缝连接试件力学性能研究[D]. 青岛:青岛理工大学, 2019.
[22]	熊刚. Q460GJ钢焊接H型钢梁整体稳定性能研究[D]. 重庆:重庆大学, 2018.
[23]	Yang Y, Zhang B, Wang Y, et al. Mechanical behaviors and constitutive model of structural steel influenced by strain aging[J/OL]. Journal of Constructional Steel Research, 2022,192[2022-03-08].https://doi.org/10.1016/j.jcsr.2022.107211.
[24]	SoenenB, De A, Vandeputte S, et al. Competition between grain boundary segregation and Cottrell atmosphere formation during static strain aging in ultra low carbon bake hardening steels[J]. Acta Materialia, 2004,52(12):3483-3492.
[25]	Yuan X, Li W, Pang Q, et al. Study on the performance and strain aging behavior of solid-solution state low-carbon steel[J]. Materials Science & Engineering A, 2018,726:282-287.
[26]	中国国家标准化管理委员会.低合金高强度结构钢:GB/T 1591-2018[S].北京:中国标准出版社, 2018. "