Flexural Performance of Composite Prestressed UHPC-NC T-Girders

Li, Wangwang; Ji, Wenyu; Liu, Anmin; Zhu, Li; Wang, Jue

doi:10.1061/(asce)be.1943-5592.0001600

Cited by 21 publications

(13 citation statements)

References 17 publications

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“…Te data in the literature [15,18,[22][23][24][25][26] are substituted into the formula and the calculation results are shown in the Table 1.…”

Section: Calculation Resultsmentioning

confidence: 99%

“…Safdar and Matsumoto have strengthened the RC beam in tension and compression zones, with UHPC of varying thicknesses [22]. LI wang-wang et al have tested seven I-beams composed of UHPC and NC, and also considered the infuence of varying steel reinforcing bars and prestressed reinforcement [25].…”

Section: Specimen Test Collection Andmentioning

confidence: 99%

“…All of the compressive strengths of UHPC in this paper exceeded 100 MPa, as shown in Figure 1; the tensile strength of UHPC is 11 MPa-18 MPa, as shown in Figure 2; the compressive strength of normal concrete is 30 MPa-60 MPa, as shown in Figure 3; and the strength of ordinary steel bars is 500 MPa-600 MPa. LI wang-wang's samples are added with high-strength prestress tendons in UHPC, and the design value of tensile strength is 1860 MPa [15,18,[22][23][24][25][26].…”

Section: Materials Properties Of Specimensmentioning

confidence: 99%

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The Prediction of Cracking Load and Peak Load of UHPC‐NC Composite Structure

Chen¹,

Mao

2022

Advances in Civil Engineering

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In this study, models for calculating the cracking load and a peak load of the UHPC-NC structures are established. The effects of UHPC's high tensile strength, reinforced steel bars in NC, reinforce steel bars in UHPC, and prestress tendons in UHPC on cracking load and peak load are considered. In the cracking load model, UHPC is considered to be elastic and the stress distribution is triangular, the stress of steel bars and prestressing tendons is also calculated according to the plane section assumption and elastic theory. In the peak load module, UHPC is assumed to be partially elastic and partially plastic. The plastic part is represented by a rectangular stress block diagram, and the stress value reduction factor and rectangular stress frame height reduction factor are obtained by trial calculation. Compared with the experimental data of UHPC-NC beams with different types of combinations collected from references, the calculated results have a high matching degree, which is suitable for various types of UHPC-NC, both cracking loads and peak loads.

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“…Te data in the literature [15,18,[22][23][24][25][26] are substituted into the formula and the calculation results are shown in the Table 1.…”

Section: Calculation Resultsmentioning

confidence: 99%

Section: Specimen Test Collection Andmentioning

confidence: 99%

Section: Materials Properties Of Specimensmentioning

confidence: 99%

See 1 more Smart Citation

The Prediction of Cracking Load and Peak Load of UHPC‐NC Composite Structure

Chen¹,

Mao

2022

Advances in Civil Engineering

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“…The most commonly used volumetric ratio of steel fiber in engineering practice was in the range of 1.5% of 2% based on the authors' previous research. 31,32 Therefore, a ratio of 1.5% was selected in this experimental program. Material properties of each mix were obtained through material tests according to Fundamental Characteristics and Test Methods of Ultra-High Performance Concrete (T/CBMF37-2018).…”

Section: Materials Propertiesmentioning

confidence: 99%

“…Mixes 2 and 3 were designed to investigate the effect of the water‐to‐binder ratio, while the volumetric ratio of steel fiber was kept as 1.5%. The most commonly used volumetric ratio of steel fiber in engineering practice was in the range of 1.5% of 2% based on the authors' previous research 31,32 . Therefore, a ratio of 1.5% was selected in this experimental program.…”

Section: Experimental Programmentioning

confidence: 99%

Experimental and numerical study on T‐Shaped UHPFRC beams with high‐strength reinforcement

Zhu

Wang

et al. 2021

Structural Concrete

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This article experimentally and numerically investigated the flexural behavior of T-shaped UHPFRC beams reinforced with high-strength bars. A total of five beams were tested to study the effect of steel fiber volumetric ratio, longitudinal reinforcement ratio, and mix proportion of UHPFRC. Test results indicate that flexural stiffness and strength increased with increasing reinforcement ratio, while the effect of mix proportion was negligible. With the same shear reinforcement ratio, the failure mode of T-shaped beams changed from shear failure to flexural failure with steel fibers. Results from finite element analyses had good agreement with test results. Future research will focus on the parametric study based on calibrated finite element models and the secondary development of ABAQUS to simulate the shear failure of UHPFRC beams.

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Study on flexural and shear performance of ultra‐high performance concrete prefabricated pi‐beams

Sun,

Luo,

Xiao

et al. 2023

Structural Concrete

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Ultra‐high performance concrete (UHPC) prefabricated beams are competitive in accelerated bridge construction. However, their broader application has been hindered by limited large‐scale tests and inaccurate design methods. To fill this gap, the authors conducted an experimental investigation on the shear and flexural performance of UHPC pi‐beams using two full‐scale specimens. One specimen was a precast UHPC beam, while the other was a composite beam with a normal concrete slab on the UHPC beam. The primary focus was on crack propagation, ultimate capacities, and failure modes. To complement the experimental findings, the extended finite element method (XFEM) was developed as a numerical approach. Nevertheless, relying solely on XFEM to understand real structural behavior is prone to misinterpretations. Moreover, the shear and flexural capacities were evaluated using existing codes and compared with the experimental results. The comparisons revealed that the predictions of shear capacities were at least 15% lower than the experimental values, whereas the flexural capacities showed acceptable agreement. To address this, the authors introduced the limit equilibrium method, leading to a more accurate prediction of shear capacity for UHPC beams with a deviation of <2%.

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Flexural Performance of Composite Prestressed UHPC-NC T-Girders

Cited by 21 publications

References 17 publications

The Prediction of Cracking Load and Peak Load of UHPC‐NC Composite Structure

The Prediction of Cracking Load and Peak Load of UHPC‐NC Composite Structure

Experimental and numerical study on T‐Shaped UHPFRC beams with high‐strength reinforcement

Study on flexural and shear performance of ultra‐high performance concrete prefabricated pi‐beams

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