Structural damage identification including the temperature difference based on response sensitivity analysis

ZHANG Chunli; LV Zhongrong

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Structural damage identification including the temperature difference based on response sensitivity analysis

更新时间：2023-12-11

- Structural damage identification including the temperature difference based on response sensitivity analysis
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 55, Issue 3, Pages: 102-105(2016)
- 作者机构：
  
  1. 重庆建筑工程职业学院,重庆,400072
  2. 
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2016，
  
  Published Online：25 May 2016，
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ZHANG Chunli, LV Zhongrong. Structural damage identification including the temperature difference based on response sensitivity analysis. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 55(3):102-105(2016)
DOI：

ZHANG Chunli, LV Zhongrong. Structural damage identification including the temperature difference based on response sensitivity analysis. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 55(3):102-105(2016) DOI：

摘要

在利用测量数据进行结构损伤识别中往往会遇到环境温度改变的问题。温度的改变（即温度差）的影响在利用模型修正进行损伤识别时一般被忽略了而带来一定的损伤识别误差。该文试图基于响应灵敏度分析，同时识别结构损伤和温度差。推导了动态响应对损伤参数和温度差的时域灵敏度，得到模型修正时的灵敏度矩阵；利用加速度响应数据进行模型修正进行损伤和温度差的识别。通过对一平面桁架桥梁结构进行数值模拟计算验证了方法的有效性。

Abstract

Damage detection based on a reference set of measured data usually has the problem of different environmental temperature in the two sets of measurements

and the effect of temperature difference is usually ignored in the subsequent model updating. It attempts to identify the structural damage including the temperature difference both local damages

and the temperature difference are identified in a gradientbased model updating method based on dynamic response sensitivity. The measured dynamic responses of the structure from two different states are used directly to identify the structural local damages and the temperature difference. A planar truss structure are studied to illustrate the effectiveness of the proposed method.

关键词

损伤识别响应灵敏度模型修正温度差

Keywords

structural damage identificationresponse sensitivitymodel updatingtemperature difference

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Related Institution

School of Civil Engineering and Architecture， Wuhan University of Technology

Swarm of Civil Engineering and Architecture，Wuhan University of Technology

Department of Applied Mechanics,Sun Yat-sen University

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