Development of an seismic damage detection technology for civil infrastructures

民用基础设施震害检测技术开发

• 批准号: 20360197
• 负责人: YOKOYAMA Koichi
• 金额: $ 10.32万
• 依托单位: Ibaraki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20360197/
• 关键词: 地震被災診断; 光ファイバセンサ; 圧電型センサ; モニタリング; 損傷判定

A novel packaged long-gage FBG (Fiber Bragg Grating) sensor for health monitoring of civil structure has been developed and verified to have the ability to obtain effective macro-strain distributions. Experimental study on application of PVDF (polarized polyvinylidene fluoride) film as a crack detection sensor was conducted to detect occurrence and crack propagation of specimen and RC beams. Moreover, the neural network system which was built based on response information of multiple locations is able to grasp damage location and damage extents in structural health monitoring (SHM) of civil structures.

研制了一种用于土木结构健康监测的新型封装长径光纤光栅（FBG）传感器，并验证了该传感器能够获得有效的宏观应变分布。采用PVDF（极化聚偏氟乙烯）薄膜作为裂纹检测传感器，对试件和RC梁的裂纹发生和扩展进行了检测试验研究。此外，基于多位置响应信息构建的神经网络系统能够在土木结构健康监测中掌握损伤位置和损伤程度。

项目成果

Improvement of typical Damage Identification Techniques Using Dynamic Strain Distribution from Long-Gage FBG Sensors(keynote)

使用长规格 FBG 传感器的动态应变分布改进典型损伤识别技术（主题演讲）

• 发表时间: 2009
• 作者: N.Lu;S.Mabu;K.Hirasawa;Wu Z.S.
• 通讯作者: Wu Z.S.

Vibration -based structural health monitoring technique using statistical features from strain measurements

使用应变测量的统计特征的基于振动的结构健康监测技术

• 发表时间: 2009
• 期刊: Journal of Engineering and Applied Sciences Vol.4, No.3
• 作者: Adewuyi A.P.;Wu Z.S.
• 通讯作者: Wu Z.S.

Parametric estimation for RC flexural structures based on distributed long-gage fiber optic sensors

基于分布式长规格光纤传感器的 RC 弯曲结构参数估计

• 发表时间: 2010
• 期刊: Journal of Structural Engineering, ASCE Vol.136, No.2
• 作者: Li S.;Wu Z. S.
• 通讯作者: Wu Z. S.

Vibration-based structural health monitoring technique using statistical features from strain measurements

使用应变测量的统计特征的基于振动的结构健康监测技术

• 发表时间: 2009
• 期刊: Journal of Engineering and Applied Sciences Vol.4, No.3
• 作者: Adewuyi;A.P.;Wu;Z.S.
• 通讯作者: Z.S.

Structural Monitoring using Piezoelectric Film

使用压电薄膜进行结构监测

• 发表时间: 2008
• 作者: Yokoyama K.;Harada T
• 通讯作者: Harada T