[1]苏三庆,李 成,王 威,等.门式刚架钢梁损伤的磁记忆检测试验研究[J].西安建筑科技大学学报(自然科学版),2020,(02):155-160,183.[doi:10.15986/j.1006-7930.2020.02.001]
 SU Sanqing,LI Cheng,WANG Wei,et al.The experimental research on the steel beam failure of gabled frame based on metal magnetic memory testing technology[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2020,(02):155-160,183.[doi:10.15986/j.1006-7930.2020.02.001]
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门式刚架钢梁损伤的磁记忆检测试验研究()
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西安建筑科技大学学报(自然科学版)[ISSN:1006-7930/CN:61-1295/TU]

卷:
期数:
2020年02期
页码:
155-160,183
栏目:
出版日期:
2020-04-25

文章信息/Info

Title:
The experimental research on the steel beam failure of gabled frame based on metal magnetic memory testing technology
文章编号:
1006-7930(2020)02-0155-07
作者:
苏三庆李 成王 威郭 欢胡敬余葛 静
(西安建筑科技大学 土木工程学院,陕西 西安 710055)
Author(s):
SU SanqingLI ChengWANG WeiGUO HuanHU JingyuGE Jing
(School of Civil Engineering, Xi’an Univ.of Arch.& Tech., Xi’an 710055, China)
关键词:
门式刚架 磁记忆 应力集中 磁畴 波峰 - 波谷
Keywords:
gabled frame metal magnetic memory stress concentration magnetic domain peak-vally
分类号:
TU391
DOI:
10.15986/j.1006-7930.2020.02.001
文献标志码:
A
摘要:
金属磁记忆检测技术是一种新型的无损检测技术,在工程领域中已得到较多应用,但目前对这种技术的研究大多集中在梁、钢板等独立构件方面.本文则通过进行门式刚架拟静力试验,对结构中刚架梁翼缘和腹板的磁记忆信号曲线进行分析,结果发现:在不同荷载作用下刚架左右两侧钢梁翼缘和腹板磁信号曲线的变化趋势存在较大差异,靠近加载端的左梁磁信号增幅较大,右梁变化幅值不大; 钢梁翼缘的磁信号在靠近柱端处存在明显异变; 钢梁跨中腹板剪应力突变处磁信号曲线表现出波谷; 磁信号梯度曲线在应力集中区存在波峰 - 波谷现象,在集中荷载作用处呈峰值
Abstract:
Metal magnetic memory testing technology is a new type of non-destructive testing technology widely used in engineering fields. However, most of the research on this technology is currently focused on independent members such as beams and steel plates. In this paper, through pseudo-static test of the gabled frame, the magnetic memory signal curves of the flange and web were analyzed. Test result reveals that the variation trend of the magnetic signal curves of the left and right flanges and webs of beams under different loads is quite different. The magnetic signal of the left beam increases greatly, but the right beam of it is the opposite. The magnetic signal of the flange is obviously changed near the end of the column and appears valley in shear stress mutation zone of the web. The magnetic memory signal gradient curve has a peak-valley phenomenon in the stress concentration region and a peak value where concentrated forces acting

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备注/Memo

备注/Memo:
收稿日期:2018-10-04 修改稿日期:2020-03-25
基金项目:国家自然科学基金项目(51878548,51578449),陕西省自然科学基础研究计划(2018JZ5013)
第一作者:苏三庆(1961-),男,教授,博士生导师,主要从事结构抗震设计、结构健康监测方面的研究. E-mail:sussq@xauat.edu.cn
更新日期/Last Update: 2020-04-25