Use of CFRP Overlays to Repair Fatigue Damage in Steel Plates under Tension Loading

Alemdar, Fatih; Gangel, Regan; Matamoros, Adolfo; Bennett, Caroline; Barrett-Gonzalez, Ron; Rolfe, ST; Líu, Hao

doi:10.1061/(asce)cc.1943-5614.0000368

Cited by 17 publications

(6 citation statements)

References 17 publications

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“…It was assumed all components in the steel deck worked in linear elasticity during the periods of vehicle loads. The elasticity modulus of steel was 2.06×10 5 MPa. The elasticity modulus of pavement was 1000MPa considering distinct change of elasticity modulus with the temperature, irrespective of the interface slippage between the deck and pavement [13].…”

Section: Stress Characteristics Of Deck-to-vertical Stiffener Weld 2mentioning

confidence: 99%

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Fatigue Repairing Craftsmanship of Deck-to-Vertical Stiffener Weld in the Steel Bridge Deck

2019

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Experiments and FE analysis were conducted on the fatigue repairing techniques of deck-to-vertical stiffener weld in the steel bridge deck. The steel bridge deck was modeled to analyze cracking reason of deck-to-vertical stiffener weld. The fatigue repairing experiment was carried out on three repairing techniques. The fatigue life and stress distribution of the deck-to-vertical stiffener weld were analyzed and repairing effects were compared. Repairing craftsmanship with different parameters was modeled to study change of stress distribution. Besides, influence of welding residual stress, stop-hole and CFRP reinforcement on fatigue repairing was discussed. The results showed that cracks of welding end on the deck were induced by out of plane deformation while those on the vertical stiffener were caused by combined out-of-plane and inplane deformation, which was more prone to cracking. Residual tensile stress reached yield strength of steel after rewelding, thus hammering and polishing after re-welding could improve fatigue life of the weld. The re-welding techniques had more favorable repairing effects than stop-hole and CFRP reinforcement.

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Section: Stress Characteristics Of Deck-to-vertical Stiffener Weld 2mentioning

confidence: 99%

“…At present, repairing techniques commonly applied on the steel bridge deck include re-welding, drilling stop-hole, CFRP reinforcement, etc. [5][6][7]. The crack propagation is slowed down by removing crack tips or increasing local bearing capacity.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Repairing Craftsmanship of Deck-to-Vertical Stiffener Weld in the Steel Bridge Deck

2019

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“…Reddy et al [15] showed that the combination of the stop hole and the FRP reinforcement can synergize the advantages of the two methods. Alemdar et al [16] analyzed the effects of different reinforcement parameters on crack growth rate, but did not consider the initiation stage of new cracks. Overall, the existing literatures mainly focused on the crack growth rate after reinforcement; while, the crack initiation and propagation after reinforcement has not been studied.…”

Section: Introductionmentioning

confidence: 99%

“…Figure16. FRP-to-steel interface bond conditions of C28-HS: the SDEG vs. remote stress curve of C28-HS with a 10 mm crack from the stop hole.…”

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confidence: 99%

An investigation on the fatigue performance of cracked steel plates reinforced with FRP and stop hole

Liu

Huang

et al. 2021

Mechanics of Advanced Materials and Structures

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In this paper, we implement the combined method of drilling stop hole and FRP reinforcement to repair cracked steel plates subjected to cyclic tension. The crack initiation and growth are experimentally investigated. The stress distribution at the stop hole and the residual fatigue life are evaluated by the FEM. The effects on prolonging residual fatigue life are analyzed. The results show that the effectiveness of only using the stop hole is limited, while the combined method has dramatically prolonged the residual fatigue life. The effect mainly owes to the increasing of the crack initiation life from the stop hole.

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“…For nonlinear adhesive, Dehghani [ 43 ] found that the bond-slip curve showed a plastic phase after the first elastic phase, and a trilinear model was established. Then, the model was further improved by Alemdar [ 44 ] and Al-Shawaf [ 45 ], taking the fiber fabric layer numbers and the maintenance period of the test pieces more into consideration.…”

Section: Introductionmentioning

confidence: 99%

Study on the Interface Constitutive Relation between Carbon Fiber Fabric and Steel

et al. 2020

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Peeling failure at the interface is one of the main failure modes for CFRP (Carbon Fiber-Reinforced Polymer)-reinforced steel structures. However, there are very few reported studies on the bond-slip relationship at the CFRP-steel interface. A series of simple shear tests were carried out in the present paper. The influence of the fiber fabric’s width and thickness, the surface roughness of the steel sheet, and the thickness of the adhesive layer on the bonding performance of the CFRP fabric to steel interface was considered. The interface constitutive model and bonding strength model were further established under multiple factors. The results show that with the decrease of the surface roughness, the interface’ ultimate peeling load increases gradually, and the failure has a tendency to develop from a glue-steel interface to a glue-CFRP interface. The test pieces that were subjected to sand blasting obtained the peak value of the ultimate peeling load. This indicates that sand blasting can effectively enhance the interface bonding strength. The theoretical values obtained via the interface prediction model are consistent with the experimental values. This proves that the newly developed interface prediction model can effectively predict the local bonding slip and bonding strength of the interface.

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Use of CFRP Overlays to Repair Fatigue Damage in Steel Plates under Tension Loading

Cited by 17 publications

References 17 publications

Fatigue Repairing Craftsmanship of Deck-to-Vertical Stiffener Weld in the Steel Bridge Deck

Fatigue Repairing Craftsmanship of Deck-to-Vertical Stiffener Weld in the Steel Bridge Deck

An investigation on the fatigue performance of cracked steel plates reinforced with FRP and stop hole

Study on the Interface Constitutive Relation between Carbon Fiber Fabric and Steel

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