Fatigue and post-fatigue monotonic behaviour of partially prestressed concrete beams

Song, Li; Hou, Jian Jun; Yu, Zhenkun

doi:10.1680/macr.14.00388

Cited by 10 publications

(5 citation statements)

References 9 publications

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“…The selection of the S-N curve of non-prestressed reinforcement directly affects the final evaluation results when evaluating the corrosion-fatigue life of the U-shaped beam. Song et al [ 55 ] fitted the parameters in the S-N curve of non-prestressed reinforcement in a PC beam. The material constants of C and m are taken as 1.4213 × 10 10 and 1.7637, respectively.…”

Section: Engineering Case Studymentioning

confidence: 99%

Corrosion-Fatigue Life Prediction of the U-Shaped Beam in Urban Rail Transit under a Chloride Attack Environment

et al. 2022

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The coupled effect of the chloride attack environment and train load seriously affects the safety and durability of urban rail transit viaducts and dramatically reduces their service life. In this research, a corrosion-fatigue life prediction model of the prestressed concrete (PC) beam under the coupled effect of the chloride attack environment and train load was developed. This proposed model was illustrated by a 30 m-span PC U-shaped beam in an urban rail transit viaduct. The competitive relationship between concrete fatigue cracking time, non-prestressed reinforcement corrosion initiation time, and concrete corrosion-induced cracking time was discussed. The effects of train frequency, the chloride attack environment grade, and the environmental temperature and relative humidity were investigated on corrosion-fatigue life. Results indicate that train frequency, the chloride attack environment grade, and the environmental temperature can reduce the corrosion-fatigue life of a U-shaped beam by up to 30.0%, 50.7%, and 21.5%, respectively. A coupled chloride attack environment and train frequency can reduce the corrosion-fatigue life by up to 61.2%. Distinct from the environmental temperature, the change of relative humidity has little effect on the corrosion-fatigue life of the U-shaped beam.

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Section: Engineering Case Studymentioning

confidence: 99%

Corrosion-Fatigue Life Prediction of the U-Shaped Beam in Urban Rail Transit under a Chloride Attack Environment

et al. 2022

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“…To study the prestress level effect, the initial prestress can be applied to the FEA model of the ballastless track slab, as previously illustrated. Song et al (2015) studied the effects of applied load level and severity of fatigue damage on the fatigue and post-fatigue monotonic behavior of partially prestressed concrete beams. The results indicated that the fatigue behavior of beams with a high degree of prestress was dependent on the applied load level.…”

Section: Prestress Degree Effectmentioning

confidence: 99%

Finite element analysis of ballastless track slabs reinforced with fiber-reinforced polymer bars

Yang

Zhang

et al. 2021

Advances in Structural Engineering

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Fiber-reinforced polymer–reinforced ballastless track slabs not only improve the insulation performance but also have advantages in their mechanical properties. The objective of the article is to propose a corresponding design method of the ballastless track slabs considering different parameters by a finite element analysis model. The deformation performance of the ballastless track slabs, as well as the prediction results of several models, was studied considering the different prestress levels, reinforcement ratios, and prestressed materials. The results show that ACI 440.4R-04 and Bischoff models are suggested for predicting the deflection of a ballastless track slab when the prestress level is between 30% and 60% and the Brown and Bartholomew model is suitable for those with a prestress level below 30%.

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“…where ns is the ratio of elastic modulus of tensile reinforcement to concrete, M is th ing moment at the mid-span of the slab, y is the distance from the position of tens forcement to the neutral axis of the mid-span transfer section, and I is the inertia m of the mid-span transfer section. For the 6 m-span RC slab, y = 0.0989 m, I = 2.823 m 4 ; and y = 0.1345 m, I = 1.3153 × 10 −3 m 4 after the concrete cover cracking. Under r vehicle loading, the maximum and minimum of the stress cycles in tensile reinforc are 40.61 MPa and 131.06 MPa, respectively, and the stress range of the tensile re ments is 90.45 MPa.…”

Section: My N I σ =mentioning

confidence: 99%

“…Repeated loading will cause fatigue damage in materials. Moreover, fatigue failure, one of the main failure modes of RC structures, will occur with the continuous accumulation of fatigue damage [4,5]. These RC structures also bear the long-term action of the environment, such as carbonation environment and chloride environment.…”

Section: Introductionmentioning

confidence: 99%

Corrosion-Fatigue Life Prediction Modeling for RC Structures under Coupled Carbonation and Repeated Loading

Cui

Liu

et al. 2021

Mathematics

Self Cite

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The coupled action of concrete carbonation and repeated loading strongly influences the safety of reinforced concrete (RC) structures and substantially reduces service life. A novel corrosion-fatigue life prediction model for RC structures under coupled carbonation and repeated loading was developed. The effect of fatigue damage on concrete carbonation and carbonation-induced corrosion rate was considered, and the acceleration of fatigue damage accumulation due to reinforcement corrosion was considered in this approach. The proposed corrosion-fatigue life prediction model was illustrated by a 6 m-span RC slab in a simply supported slab bridge for the highway, and the effects of traffic frequency, overloading, carbonation environment grade, and environmental temperature and relative humidity on corrosion-fatigue life were discussed. The results indicate that the proposed model can predict the corrosion-fatigue life of RC structures simply and conveniently. Traffic frequency, overloading, carbonation environment grade, and environmental temperature and relative humidity can decrease the corrosion-fatigue life of the RC slab by up to 66.86%, 58.90%, 77.45%, and 44.95%, respectively. The research is expected to provide a framework for the corrosion-fatigue life prediction of RC structures under coupled carbonation and repeated loading.

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Fatigue and post-fatigue monotonic behaviour of partially prestressed concrete beams

Cited by 10 publications

References 9 publications

Corrosion-Fatigue Life Prediction of the U-Shaped Beam in Urban Rail Transit under a Chloride Attack Environment

Corrosion-Fatigue Life Prediction of the U-Shaped Beam in Urban Rail Transit under a Chloride Attack Environment

Finite element analysis of ballastless track slabs reinforced with fiber-reinforced polymer bars

Corrosion-Fatigue Life Prediction Modeling for RC Structures under Coupled Carbonation and Repeated Loading

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