Q550qENH高性能耐候桥梁钢焊接试验研究

车平; 李军平; 韩昌松; 刘志刚

doi:10.3724/j.gyjzG25042207

Q550qENH高性能耐候桥梁钢焊接试验研究

doi: 10.3724/j.gyjzG25042207

车平^1,2,
李军平^1,2,
韩昌松^1,2,
刘志刚^1,2

1. 中铁高新工业股份有限公司, 北京 100039;
2. 中铁宝桥集团有限公司, 陕西宝鸡 721006

基金项目:

“十四五”国家重点研发计划（2022YFB3706400）。

详细信息

作者简介:
车平，正高级工程师，主要从事高性能耐候桥梁钢领域研究。电子信箱:765038659@qq.com

计量
- 文章访问数: 36
- HTML全文浏览量: 7
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2025-04-22
- 网络出版日期: 2025-11-05

Experimental Study on Welding of Q550qENH High Performance Weather Resistant Bridge Steel

1. China Railway Hi-Tech Industry Co., Ltd., Beijing 100039, China;
2. China Railway Baoji Bridge Group Co., Ltd., Baoji 721006, China

摘要

摘要: 与普通桥梁钢相比，耐候桥梁钢兼顾了力学性能和耐候性能，在钢桥梁工程中有较好的应用前景。但由于添加合金元素较多，对其焊接性能有一定的影响。针对Q550qENH耐候桥梁钢板进行了一系列试验研究，包括母材复验测试、焊接材料复验测试、钢板焊接性测试、对接接头系列温度冲击功测试以及典型接头的焊接工艺评定测试，确定了Q550qENH耐候桥梁钢板配套焊接材料，评价和分析了该钢种的焊接性能及耐候性能。并依据相关标准进行了焊接工艺评定试验，试验结果表明，焊缝金属-40 ℃低温冲击功A_kV₂≥54 J，耐腐蚀指数I≥6.5，符合钢桥梁制造相关规范要求，为大型桥梁推广应用耐候桥梁钢提供了技术支撑。
- Q550qENH /
- 耐候桥梁钢 /
- 焊接试验 /
- 耐候性能
Abstract: Compared with conventional bridge steel， weather-resistant bridge steel takes both mechanical properties and weather resistance into account， and has a promising application prospect in steel bridge engineering. However， the addition of alloy elements has a certain impact on the welding performance. For Q550qENH weather-resistant bridge steel plates， a series of experimental study was conducted， including material reinspection test， welding material reinspection test， steel plate welding performance test， a series of temperature impact test for butt joints， and welding process qualification test for typical joints. The matching welding materials for Q550qENH weather-resistant bridge steel plates were determined. The welding performance and weather resistance of this steel grade were evaluated and analyzed. And welding process qualification tests were carried out according to relevant standards. The test results showed that the -40 ℃ low-temperature impact energy A_kV₂ of the weld metal was above 54 J， and the value of the corrosion resistance index I was above 6.5， which met the requirements of the relevant steel bridge manufacturing specifications. This provided technical support for the promotion and application of weather-resistant bridge steel in large-scale bridges.
- Q550qENH /
- weather resistant bridge steel /
- welding test /
- weather resistance performance

HTML全文

参考文献(9)

[1]	李军平. 免涂装耐候钢在雅鲁藏布江钢管拱桥上的研究应用[J]．钢结构，2019，35（6）:107-111.
[2]	刘玉擎，陈艾荣. 耐候钢桥的发展及其设计要点[J]．桥梁建设，2003（5）:39-45.
[3]	车平，李军平，黄会强等. 高性能Q420qENH耐候桥梁钢焊接试验[J]. 焊接，2021（1）:42-50.
[4]	毛新平，武会宾，汤启波. 我国桥梁结构钢的发展与创新[J]. 现代交通与冶金材料，2021，11（3）:1-5.
[5]	JOHNSON M Q，EDWARDS G R，EVANS G M. The effect of thermal cycles on high-strength steel SMA weld metal microstructures and properties[C]// International Conference on Trends in Welding Research. Gatlinburg，United States:1995.
[6]	陈焕德，张淑娟，刘东升. 桥梁钢板Q500qE 焊接粗晶区相变及接头性能[J]. 焊接学报，2017，38（7）:123-128.
[7]	柴亮. 南京大胜关长江大桥Q420qE钢焊接工艺评定试验[J]. 电焊机，2012，42（9）:77-80.
[8]	中国铁路总公司. 铁路钢桥制造规范:Q/CR 9211—2015[S]. 北京:中国铁道出版社，2015.
[9]	国家标准化管理委员会. 桥梁用结构钢:GB/T 714—2015[S]. 北京:中国标准出版社，2015.