Flexural Responses of Prestressed Hybrid Wide Flange Composite Girders

Han, Sun Jin; Lee, Deuck Hang; Oh, Jae Yuel; Choi, Seung Ho; Kim, Kang Su

doi:10.1186/s40069-018-0268-1

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…In this study, a layered analysis [17,18] shown in Figure 8a was performed to evaluate the flexural behavior of the JAS. Since no damage at the interface between the PC unit slab and cast-in-place concrete was observed in the CF specimen, the PC and the cast-in-place concrete were considered to be fully composite in the flexural analysis.…”

Section: Non-linear Flexural Analysismentioning

confidence: 99%

Flexural and Shear Performance of Prestressed Composite Slabs with Inverted Multi-Ribs

et al. 2019

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Half precast concrete slabs with inverted multi-ribs (Joint Advanced Slab, JAS), which enhance composite performance between slabs by introducing shear keys at connections between the slabs and improve structural performance by placing prestressing tendons and truss-type shear reinforcements, have recently been developed and applied in many construction fields. In this study, flexural and shear tests were performed to verify the structural performance of JAS members. Towards this end, two flexural specimens and four shear specimens were fabricated, and the presence of cast-in-place concrete and the location of the critical section were set as the main test variables. In addition, the flexural and shear performance of the JAS was quantitatively evaluated using a non-linear flexural analysis model and current structural design codes. Evaluation results confirmed that the flexural behavior of the JAS was almost similar to the behavior simulated through the non-linear flexural analysis model, and the shear performance of the JAS can also be estimated appropriately by using the shear strength equations presented in the current design codes. For the JAS with cast-in-place concrete, however, the shear strength estimation results differed significantly depending on the way that the shear contributions of the precast concrete unit and cast-in-place concrete were calculated. Based on the analysis results, this study proposed a design method that can reasonably estimate the shear strength of the composite JAS.

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Section: Non-linear Flexural Analysismentioning

confidence: 99%

Flexural and Shear Performance of Prestressed Composite Slabs with Inverted Multi-Ribs

et al. 2019

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“…Composite structural systems are widely used in construction sites because they afford long spans and reduced floor heights. In this regard, steel-concrete composite members with structural performance improved by efficiently utilizing the advantages of concrete and steel [1][2][3][4][5][6][7], prestressed concrete members with flexural and shear performance improved by introducing prestress into concrete with low tensile strength [8][9][10], and composite members applied with fibers and high-performance materials [11][12][13][14][15][16][17][18][19] have been developed hitherto.…”

Section: Introductionmentioning

confidence: 99%

Shear Behavior of Concrete Encased Steel Truss Composite Girders

Lim¹,

Choi

et al. 2021

Applied Sciences

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In this study, experimental tests were performed to evaluate the shear performance of encased steel truss (EST) composite girders that can resist loads at construction and composite stages. Four full-scale EST composite girders were fabricated, where the truss type (Pratt truss and Warren truss) and presence of stirrups were set as main test variables. The test results showed that in specimens applied with the Pratt truss, horizontal shear cracking occurring along the interface between concrete and steel was the dominant failure mode. Based on the crack pattern and failure plane observed from the test, the horizontal shear strengths of the Pratt truss specimens were calculated, which provided conservative results. On the other hand, in the specimens with the Warren truss inside, the strengths of the specimens were governed by the shear failure occurring in the screw rod connecting the truss elements prior to the yielding of the diagonal member. The shear strengths of the Warren truss specimens calculated based on the shear failure of the screw rod were similar to that obtained from the test.

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Seismic Performance Assessment of Deteriorated Two-Span Reinforced Concrete Bridges

Kim

2022

Int J Concr Struct Mater

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This paper presents a nonlinear analysis procedure for the seismic performance assessment of deteriorated reinforced concrete bridges using a modified damage index. A finite-element analysis program, RCAHEST (Reinforced Concrete Analysis in Higher Evaluation System Technology), is used to analyze deteriorated two-span simply supported reinforced concrete bridges. The new nonlinear material models for deteriorated reinforced concrete behaviors were proposed, considering corrosion effects as shown in a reduction in reinforcement section and bond strength. A modified damage index aims to quantify the seismic performance level in deteriorated reinforced concrete bridges. Several parameters of two-span simply supported deteriorated reinforced concrete bridge have been studied to determine the seismic performance levels. The newly developed analytical method for assessing the seismic performance of deteriorated reinforced concrete bridges is verified by comparison with the experimental and analytical parameter results.

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Flexural Responses of Prestressed Hybrid Wide Flange Composite Girders

Cited by 3 publications

References 16 publications

Flexural and Shear Performance of Prestressed Composite Slabs with Inverted Multi-Ribs

Flexural and Shear Performance of Prestressed Composite Slabs with Inverted Multi-Ribs

Shear Behavior of Concrete Encased Steel Truss Composite Girders

Seismic Performance Assessment of Deteriorated Two-Span Reinforced Concrete Bridges

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