DAMAGE IDENTIFICATION OF PRESTRESSED CONCRETE BEAMS BASED ON MODAL STIFFNESS

Chen Zhenfu; Liu Jun; Gan Yuanchu; You Meng; Sun Bing; Wang Zhongyou

doi:10.13204/j.gyjz201406015

Volume 44 Issue 06

Jan. 2015

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2014 > 44(06): 62-66

Huang Xianghai, Liang Shuting, Zhu Xiaojun. RESEARCH ON DAPPED -END BEAMS OF DRY DAPPED -END CONNECTIONS IN PRECAST CONCRETE FRAME STRUCTURE[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(10): 46-49. doi: 10.13204/j.gyjz200710013

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Chen Zhenfu, Liu Jun, Gan Yuanchu, You Meng, Sun Bing, Wang Zhongyou. DAMAGE IDENTIFICATION OF PRESTRESSED CONCRETE BEAMS BASED ON MODAL STIFFNESS[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(06): 62-66. doi: 10.13204/j.gyjz201406015

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DAMAGE IDENTIFICATION OF PRESTRESSED CONCRETE BEAMS BASED ON MODAL STIFFNESS

doi: 10.13204/j.gyjz201406015

Publish Date: 2014-06-20

Abstract

Abstract

This paper expounded that modal stiffness are of great significance for damage identification． It was proposed BP and PNN neural network for damage identification based on this modal parameter． The result，via experiment analysis on 11 prestressed concrete beams with multistage damage status，shows that the theoretical method based on modal stiffness is hardly practical in engineering application due to many factors such as noise and boundary condition etc，while the neural network can be effectively applied to identify damages with high precision． Moreover，which can offer a new idea for damage identification researches．
- prestressed concrete beams,
- modal stiffness,
- damage identification,
- neural network

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