Study of Box Girder Steel Structure Locally Reinforced by CFRP

Zhi Ping Liu; Zongchen Li; Ming Chang Li; Kai Chen; Chao Chao He

doi:10.4028/www.scientific.net/MSF.860.57

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HomeMaterials Science ForumMaterials Science Forum Vol. 860Study of Box Girder Steel Structure Locally...

Study of Box Girder Steel Structure Locally Reinforced by CFRP

Abstract:

On the basis of using CFRP (Carbon Fiber Reinforced Polymer) to reinforce steel materials and structures, this paper focused on the reinforcement method of box girder steel structure. Firstly, FEM models were set up to discuss the reinforce method, stress distribution between overall strengthening of flange and locally strengthening. Secondly, typical crack model was raised on the basis of mechanics characteristic, reinforcement effects under different methods was analyzed. The results showed that locally strengthening method to reinforce the certain fatigue areas could improve stress concentration phenomenon and SIF effectively. This paper offered a significant basement for reinforcing box girder steel structures and repairing fatigue cracks using CFRP.

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Periodical:

Materials Science Forum (Volume 860)

Pages:

57-60

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.860.57

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Online since:

July 2016

Authors:

Zhi Ping Liu*, Zongchen Li, Ming Chang Li, Kai Chen, Chao Chao He

Keywords:

Box Girder Steel Structure, CFRP, Crack Repairing, Locally Reinforcement, SIF

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