Effect of holes and segmentation on the structural behavior of a prestressed concrete girder

Han, Man-Yop; Jin, Kyung-Seok; Chang, Dong-Hak; Kang, Taeheon; Jeon, Se-Jin

doi:10.1007/s12205-014-0377-6

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…Experimental results for evaluating the performance of shear key showed that multiple shear keys have excellent load resistance at the joint and effectively transfer shear force and compressive force of segments. Also, they have sufficient load-bearing capacities and less displacement compared to other shear keys, and do not require rebar reinforcement (Han et al 2009(Han et al , 2014.…”

Section: Segmentationmentioning

confidence: 99%

Effects of concrete strength on structural behavior of holed-incrementally prestressed concrete (H-IPC) girder

Han¹,

Kim

Kang³

2015

Advances in concrete construction

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Holed-Incrementally Prestressed Concrete (H-IPC) girders are designed using the following new design concepts. At first, web openings reduce the self-weight of the girder, and also diffuse prestressing tendon anchorages. The reduced end anchoring forces decrease the web thickness of the end sections. Additionally, precast technology help to improve the quality of concrete and to reduce the construction period at the site. For experimentally verification, two 50 m full-scale H-IPC girders are manufactured with different concrete strength of 55 MPa and 80 MPa. The safety, stiffness, ductility, serviceability and crack development of H-IPC girder are measured and compared with each other for different strengths. Both girders show enough strength to carry live load and good stiffness to satisfy the design criteria. The experimental result shows the advantages of using high strength concrete and adopting precast girder. The test data can be used as a criterion for safety control and maintenance of the H-IPC girder.

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Section: Segmentationmentioning

confidence: 99%

Effects of concrete strength on structural behavior of holed-incrementally prestressed concrete (H-IPC) girder

Han¹,

Kim

Kang³

2015

Advances in concrete construction

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Evaluation of Cast-in-Place Splice Regions of Spliced I-Girder Bridges

Williams¹,

Moore²,

Al-Tarafany³

et al. 2019

ACI Structural Journal

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Long-Term Characteristics of Prestressing Force in Post-Tensioned Structures Measured Using Smart Strands

2020

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The proper distribution of prestressing force (PF) is the basis for the design of prestressed concrete (PSC) structures. However, the PF distribution obtained by predictive equations of prestress losses has not been sufficiently validated by comparison with measured data due to the poor reliability and durability of conventional sensing technologies. Therefore, the Smart Strand with embedded fiber optic sensors was developed and applied to PSC structures to investigate the long-term characteristics of PF distribution as affected by concrete creep and shrinkage. The data measured in a 20 m-long full-scale specimen and a 60 m-long PSC girder bridge were analyzed by comparing them with the theoretical estimation obtained from several design equations. Although the long-term decreasing trend of the PF distribution was similar in the measurement and theory, the equation of Eurocode 2 for estimating the long-term prestress losses showed better agreement with the measurement than ACI 209R and ACI 423.10R did. This can be attributed to the more refined form of the predictive equation of Eurocode 2 in dealing with the time-dependency of the PF. The study results also confirmed the need to compensate for the temperature variation in the long-term monitoring to derive the actual mechanical strain related to the PF. We expect our developed Smart Strand to be applied practically in PF measurement for the reasonable safety assessment and maintenance of PSC structures by improving several of the existing drawbacks of conventional sensors.

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Effect of holes and segmentation on the structural behavior of a prestressed concrete girder

Cited by 3 publications

References 11 publications

Effects of concrete strength on structural behavior of holed-incrementally prestressed concrete (H-IPC) girder

Effects of concrete strength on structural behavior of holed-incrementally prestressed concrete (H-IPC) girder

Evaluation of Cast-in-Place Splice Regions of Spliced I-Girder Bridges

Long-Term Characteristics of Prestressing Force in Post-Tensioned Structures Measured Using Smart Strands

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