Seismic Behavior and Shear Bearing Capacity of Ultra-High Performance Fiber-Reinforced Concrete (UHPFRC) Beam-Column Joints

Wang, Dehong; Ju, Yanzhong; Zheng, Wenzhong; Shen, Hao

doi:10.3390/app8050810

Cited by 21 publications

(10 citation statements)

References 19 publications

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“…Yet, to date, only a limited number of studies have investigated the behavior and design of R/UHPC beamcolumn joints. Wang et al (2018a) tested 13 half-scaled exterior and interior beam-column subassemblages with R/UHPC joints, which were detailed to show a shear-dominant failure mode. Similar to the effect of axial load on regular RC joints, greater axial load enhanced the cracking strength and shear capacity of R/UHPC joints due to the larger column compression zone.…”

Section: Beam-column Jointsmentioning

confidence: 99%

A Review of Developments and Challenges for UHPC in Structural Engineering: Behavior, Analysis, and Design

2021

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The number of studies on ultrahigh-performance concrete (UHPC) or ultrahigh-performance fiber-reinforced concrete (UHP-FRC) for more resilient and sustainable reinforced concrete (RC) structures has rapidly increased in recent years due to the superior mechanical and durability properties of UHPC. The application of UHPC as a replacement for conventional concrete materials in various RC elements necessitates a thorough understanding of the structural behavior of the reinforced UHPC (R/UHPC) components under various types of loadings. This paper presents a systematic review of the state-of-the-art developments in R/UHPC elements. It addresses various topics including beams, columns, beam-column joints, shear walls, bridges, structural retrofitting, and applications such as seismic and impact. Due to the ultrahigh tensile, compressive, and bond strengths, unique strain-hardening behavior, and ductility of UHPC, R/UHPC structures may exhibit substantially different behavior than conventional RC structures at both the component and system levels. This implies that particular attention must be paid when design and analysis approaches for conventional RC elements are applied to R/UHPC elements, and suggests that developing new design philosophies is warranted to take advantage of UHPC's unique mechanical properties. The present paper summarizes the developments in analysis and design approaches for R/UHPC elements under axial forces, shear forces, and bending moments, and highlights the advantages and limitations of these approaches. Important design considerations for effectively utilizing UHPC in structural elements are also suggested. In addition to normal-strength steel reinforcing bars, the potential for reinforcing UHPC with high-strength steel bars, fiber-reinforced polymer components, and structural steel shapes is discussed based on the results of pioneering studies. Finally, this paper identifies challenges and suggests future directions for research on UHPC in structural engineering.

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Section: Beam-column Jointsmentioning

confidence: 99%

A Review of Developments and Challenges for UHPC in Structural Engineering: Behavior, Analysis, and Design

2021

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“…Five exterior and four interior UHPC beam-column joints were tested under reverse cyclic load by Wang et al (2018a). The experimental variables included joint types (exterior or interior), axial compression load ratio of the column (0.3 or 0.5), nominal yielding strength of longitudinal bars in beam and column (400 MPa or 600 MPa), and volume stirrup ratio in the joint area (0 or 0.25%).…”

Section: Beam-columns Jointsmentioning

confidence: 99%

A review on seismic behavior of ultra-high performance concrete members

Fang

Shi

et al. 2020

Advances in Structural Engineering

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Ultra-high performance concrete (UHPC) is a type of cementitious composite, and demonstrates very high compressive strength and good ductility. The favorable ductility and energy dissipation capacity of UHPC material make it possible to achieve excellent seismic performance in all kinds of structural members. The paper reviewed the recent progress on the seismic behavior of UHPC members, including flexural members (beams and plates), compressive members (columns and shear walls), joints (beam-column joints and plate-column joints), strengthening (strengthening for columns, shear walls and joints) and connections (bar lap splice and grout). A series of potential future researches on the seismic behavior of UHPC members were finally suggested for promotion of the application of UHPC in civil engineering.

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“…Cracks in the Joint Region e shear strength of the HPFRC beam-column joint is mainly borne by three parts: the diagonal strut of HPFRC, the transverse reinforcement in the joint region, and the steel fiber [34]. at is,…”

Section: Calculation For the Width Of Diagonalmentioning

confidence: 99%

Crack Resistance Properties of HPFRC Beam-Column Joints under Cyclic Load

Wang

Shen

2019

Advances in Materials Science and Engineering

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To investigate the crack resistance properties of high-performance fiber-reinforced concrete (HPFRC) beam-column joints, quasi-static tests of twenty-four beam-column joint specimens were performed. Test specimen variables included joint types, size effect, axial compression ratio, stirrup ratio in joint, web reinforcement, and noncorner vertical reinforcement across the joint region. The influences of these factors on the crack properties of HPFRC joints were analyzed. Test results showed that the shear strength at the crack of HPFRC exterior joints with shear failure was closer to the ultimate bearing capacity. The average ratio of the cracking shear force to the peak shear force was 0.631 for the exterior joint with shear failure, and the ratio was 0.527 for the interior joint with the same size. The size effect was observed in HPFRC joint specimens, and the average shear stress at the joint crack decreased with the increase of the joint specimen size. The increase of the axial compression ratio can improve the crack resistance properties (cracking strength and crack width) of HPFRC joints. Web reinforcement and noncorner vertical reinforcement across the joint region have no evident influence on the cracking strength of joints, but they significantly affect the distribution and width of cracks in the joint region. The formulas for calculating the cracking strength and crack width of HPFRC joints were proposed based on the test results.

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Seismic Behavior and Shear Bearing Capacity of Ultra-High Performance Fiber-Reinforced Concrete (UHPFRC) Beam-Column Joints

Cited by 21 publications

References 19 publications

A Review of Developments and Challenges for UHPC in Structural Engineering: Behavior, Analysis, and Design

A Review of Developments and Challenges for UHPC in Structural Engineering: Behavior, Analysis, and Design

A review on seismic behavior of ultra-high performance concrete members

Crack Resistance Properties of HPFRC Beam-Column Joints under Cyclic Load

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