[1]顾培英,陈厚群,李同春,等.用应变模态技术诊断梁结构的损伤[J].地震工程与工程振动,2005,25(04):050-53.
 Gu Peiying,Chen Houqun,Li Tongchun,et al.Application of strain mode in diagnosing damage to beam[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2005,25(04):050-53.
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用应变模态技术诊断梁结构的损伤
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《地震工程与工程振动》[ISSN:/CN:]

卷:
25
期数:
2005年04期
页码:
050-53
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Application of strain mode in diagnosing damage to beam
作者:
顾培英12 陈厚群3 李同春1 邓昌2
1. 河海大学, 江苏 南京 210098;
2. 南京水利科学研究院, 江苏 南京 210029;
3. 中国水利水电科学研究院, 北京 100044
Author(s):
Gu Peiying12 Chen Houqun3 Li Tongchun1 Deng Chang2
1. Hohai University, Nanjing 210098, China;
2. Nanjing Hydraulic Research Institute, Nanjing 210029, China;
3. China Institute of Water Resources and Hydropower Research, Beijing 100044, China
关键词:
损伤诊断模态分析位移模态应变模态
Keywords:
damage diagnosingmodal analysisdisplacementmodestrain mode
分类号:
TB123;P315.96
摘要:
重点研究损伤对应变模态影响规律及其灵敏程度.根据计算结果,损伤处附近发生突变,损伤30%时突变区为梁长的12.5%.应变模态对非节点损伤非常敏感,应变模态也有明显改变,尤其是跨中损伤第1阶、四分之一跨损伤第3和第2阶.跨中损伤时,1阶应变模态除突变区外大多数应变几乎呈均匀下降趋势.四分之一跨损伤30%时,3阶应变模态第1峰值区及2阶模态第1、第2峰值区应变振型值下降至58.6%、71.9%及84.2%.所以,可利用应变模态的敏感性确定损伤位置和程度.
Abstract:
Strain mode is applied to diagnosing the position and degree of structural damage, because of displacement modal parameter being insensitive to damage. The principles of damage effect on strain mode are studied. Based on the results of beam, it is concluded that strain modes are very sensitive to non-node damage. The abrupt change of strain is found around damage and the range is 12.5 percent of the beam if damage is 30 percent of its height. Furthermore, the change of strain mode is obvious, especially the first strain mode in middle span damage, the third and the second mode in quarter span damage. The value of the first strain mode shows equal downtrend in middle span damage. The first peak value of the third strain mode, the first and the second peak value of the second mode reduce to 58.6, 71.9 and 84.2 percent in quarter span damage of 30 percent.

参考文献/References:

[1] 顾培英,丁伟农.模态试验在梁损伤诊断中的应用研究[J].振动与冲击,2004,23(3):60~63.
[2] 顾培英,陈厚群,李同春.模态试验技术诊断梁损伤[A].2004 年全国博士生学术论坛论文集[C].南京:河海大学,2004.
[3] 李德葆.实验应变/应力模态分析若干问题的进展评述[J].振动与冲击,1996,15(1):13~17.
[4] 瞿伟廉,陈超,魏文辉.基于应变模态的钢结构构件焊缝损伤定位方法的研究[J].世界地震工程,2002,18(2):1~8.
[5] 王文静,刘志明,缪龙秀.基于实验模态的结构应变模态分析[J].北方交通大学学报,2000,24(4):20~23,28.
[6] 李德葆,陆秋海.实验模态分析及其应用[M].北京:科学出版社,2001.

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备注/Memo

备注/Memo:
收稿日期:2004-7-28;改回日期:2004-10-28。
基金项目:水利科技创新项目(SCX2002-16)
作者简介:顾培英(1968- ),女,高级工程师,博士研究生,主要从事结构抗震、减震、振动损伤诊断研究.
更新日期/Last Update: 1900-01-01