|本期目录/Table of Contents|

[1]常军.基于曲率模态的钢筋混凝土梁多点损伤位置识别[J].建筑科学与工程学报,2006,23(04):24.
　CHANG Jun.Curvature Model Based Many Damage Locations Identification of Reinforced Concrete Beam[J].Journal of Architecture and Civil Engineering,2006,23(04):24.
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基于曲率模态的钢筋混凝土梁多点损伤位置识别(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
23卷
期数:
2006年04期
页码:
24
栏目:
出版日期:
2006-12-20

文章信息/Info

Title:
Curvature Model Based Many Damage Locations Identification of Reinforced Concrete Beam
作者:
常军1,2
1. 苏州科技学院 管理科学与工程系,江苏 苏州 215011; 2. 同济大学 土木工程防灾国家重点实验室,上海 200092
Author(s):
CHANG Jun1,2
1. Department of Management Science and Engineering, University of Science and Technology of Suzhou, Suzhou 215011, Jiangsu, China; 2. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
关键词:
钢筋混凝土梁;  损伤识别;  曲率模态;  动力特性;  有限元方法
Keywords:
reinforced concrete beam;  damage identification;  curvature model;  dynamic characteristic;  finite element method
分类号:
TU375.1
DOI:
-
文献标志码:
A
摘要:
采用曲率模态对钢筋混凝土梁的多点损伤位置进行了识别研究。首先用有限元程序建立结构模型,并计算出位移模态振型,然后用差分法计算出曲率模态; 同时对实际结构进行检测,得到结构的振型并计算出曲率模态。通过有限元模型和实际结构的曲率模态计算得到结构损伤因子,通过分析该损伤因子,可以判断实际结构的损伤位置。数值模拟算例分析表明,曲率模态对结构的损伤较敏感,用该方法识别结构的多点损伤位置是行之有效的。
Abstract:
An approach of structural many damage locations of reinforced concrete beam identification by curvature model was studied. Firstly, the finite element software of structure was built; the structural displacement models vibration shape was computed. By using the central difference approximation, the curvature models were then gained from the displacement mode shapes. At the same time, the real structure was inspected; the structural displacement models were gained and the curvature modes were calculated. Through comparing the curvature modes of real structure with finite element model, a damage factor was gained. Based on analyzing the damage factor, damage location can be identified. Numerical simulation analysis shows that the curvature model has a little sensitivity to damage of structures; it is an effective method to evaluate many damage locations identification of structure.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2006-10-12
基金项目:国家重点基础研究发展计划(“九七三”计划)项目(2002CB412709)
作者简介:常 军(1973-),男,江苏丰县人,苏州科技学院讲师,工学博士,E-mail:changjun21@126.com。
更新日期/Last Update: 2006-12-20