Application of HPFRCC in beam–column joints to reduce transverse reinforcements

Saghafi, Mohammad Hossein; Golafshar, Ali; Zareian, Mohammad Sajjad; Mehri, Amir Hossein

doi:10.1016/j.istruc.2021.02.032

Cited by 11 publications

(5 citation statements)

References 16 publications

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“…1. The experimental results proved that FRC can improve the seismic behaviors of prefabricated BCJs, which was consistent with the conclusion in the references (Dangwal & Singh, 2023;Noushini et al, 2013Noushini et al, , 2015Parra-Montesinos & Chompreda, 2017;Saghafi et al, 2021;Zhuang et al, 2022a).…”

Section: Introductionsupporting

confidence: 90%

“…PVA fiber not only can improve dynamic and material properties of fiber-reinforced concrete (Noushini et al, 2013(Noushini et al, , 2015, and also can improve the ductility and damping characteristics of reinforced concrete members (Fischer & Li, 2002). The performance enhancement in terms of stiffness, strength, ductility, and energy absorption capacity, which could be achieved by replacing concrete with the high-performance material ECC, different fiber-reinforced concrete (Gencturk et al, 2013;Gul et al, 2023;Parra-Montesinos & Chompreda, 2017;Saghafi et al, 2021;Said & Razak, 2016;Suryanto et al, 2022). In 2023, Sun et al first investigated the seismic performance of prefabricated concrete and prefabricated fiber-reinforced concrete (FRC) BCJs by the quasi-static tests (Sun et al, 2023a).…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation Study on the Seismic Performance of Prefabricated Fiber-Reinforced Concrete Beam–Column Joints With Grouted Sleeve Connections

Zhuang,

Cheng,

Fei

et al. 2024

Int J Concr Struct Mater

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Based on the available experimental data, fiber models for four prefabricated fiber-reinforced concrete beam–column joint specimens with grouted sleeve connections are first developed in OpenSees software. Then, the simulated seismic performance of the specimens is compared with the experimental results. Finally, the effects of axial load ratio and shear-to-span ratio on the seismic performance of the specimens are further investigated numerically. The results indicate that Concrete02 material model and Reinforcing Steel material model can accurately simulate the constitutive relationship of concrete and reinforcing steel, respectively; the beam–column joint elements can accurately simulate different damage behaviors of the joint zone. Fiber-reinforced concrete can significantly improve the seismic performance of the specimens. The relative errors of the simulated seismic performance indexes are about 15%. It is recommended that the optimum value of shear-to-span ratio for prefabricated FRC BCJs is 2.0–2.5. The effect of axial load ratio on the seismic behavior of PBCJs-CM is very small, and can be negligible in the case that the prefabricated FRC BCJs has a moderate value of shear-to-span ratio. The fiber model developed in this article can provide a numerical simulation basis for subsequent studies of prefabricated fiber-reinforced concrete beam–column joint specimens with grouted sleeve connections.

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Section: Introductionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Study on the Seismic Performance of Prefabricated Fiber-Reinforced Concrete Beam–Column Joints With Grouted Sleeve Connections

Zhuang,

Cheng,

Fei

et al. 2024

Int J Concr Struct Mater

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“…Due to the dense steel reinforcement, combining these two facts and the current design trend of small cross-sectional-sized structural components results in significant constructional issues. An inadequate gap makes placing and vibrating fresh concrete a particularly challenging process, which in turn leads to issues with concrete compacting in beam-column structures [4].…”

Section: Introductionmentioning

confidence: 99%

“…In beam-column joints of fibre-reinforced concrete (FRC), including steel fibres in the concrete mixture increases the concrete's ductility, toughness, and energy dissipation capacity. However, as the percentage of fibre grows, steel-fibre-reinforced concrete (SFRC) combinations experience issues like inefficiency, homogeneity, and conglomeration [4]. For hardened SFRC under direct tension, strain hardening behaviour is challenging to produce.…”

Section: Introductionmentioning

confidence: 99%

Modelling and Integrating of Experimental Analysis for Predicting the Parameters of Kenaf Fibre-Reinforced Concrete Beam-Column Joint

Ayeni,

Jamaludin,

Abdul Shukor Lim

2024

Jurnal Teknologi

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To lessen the environmental impact of infrastructure projects, the construction sector has recently demonstrated a growing interest in sustainable materials. Kenaf fibre-reinforced concrete (KFRC), which has improved mechanical qualities and biodegradability, has emerged as a possible eco-friendly substitute. The intricate interactions between material composition, geometrical factors, and load-bearing capacities make it difficult to optimise the design of structural parameters of KFRC beam-column joints. The beam-column joints used in this study were designed based on ACI 318-19 shear criteria. This study suggests a novel method for precisely predicting the parameters of kenaf fibre-reinforced concrete beam-column (KFRC-BC) joints by combining machine learning modelling and experimental investigation. Experimental data are carefully documented to establish the reality, including load-displacement responses and beam-column joint parameters such as shear, stiffness, ductility, crack load, energy absorption, and ultimate load. These data were used in the modelling through GeneXproTools 5.0 (GEP) and an empirical relationship with mathematical expressions has been proposed for each joint parameter. R2 statistical analysis is used to evaluate the model’s efficacy. In addition, it has been demonstrated by varying intensity and correlation that deep learning may be used to determine the precise concrete structure parameters in civil engineering without the need for experimental research. The shear spacing could be increased by 25% to 50%. Concrete strength influences all these characteristics.

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“…The results indicated that PVA fibers can make the crack development like a grid, inhibit the crack development and significantly improve the overall performance of the joint. Saghaf et al 26 used high‐performance fibers to prevent the congestion of stirrups in RC structures. Based on the above analysis, it can be found that the FRC beam‐column joints have better ductility and energy dissipation capacity; the strong shear resistance of FRC can allow it to replace stirrups.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the seismic performance of prefabricated fiber‐reinforced concrete beam‐column joints using grouted sleeve connections

Sun¹,

Zhuang

Wang

et al. 2023

Structural Concrete

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To improve the seismic performance of prefabricated reinforced conventional concrete (PRC) beam‐column joints, fiber‐reinforced concrete (FRC) was used instead of concrete in the core zone of the joint in this article. The optimum volume contents of polyvinyl alcohol (PVA) fibers and steel fibers were first determined to be 0.3% and 1%, respectively, through the material properties tests. Then, four PRC beam‐column joint specimens using grouted sleeve connections and one cast‐in‐place reinforced concrete beam‐column joint specimen were designed considering the factors of PVA fibers, steel fibers, with or without stirrups. The test phenomena and failure mode of the five specimens under low‐cycle cyclic loads were obtained. Finally, the effects of PVA fibers, steel fibers, with or without stirrups on the seismic performance of specimens were analyzed and discussed. The test phenomena indicated that the failure mode of specimens was anchorage damage of steel bars. The prefabricated FRC specimens showed relatively little damage in the core zone of the joint. FRC had a significant improvement on the seismic performance of prefabricated beam‐column joints. The use of FRC in the core zone of the joint can reduce or even eliminate the use of stirrups.

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Application of HPFRCC in beam–column joints to reduce transverse reinforcements

Cited by 11 publications

References 16 publications

Numerical Simulation Study on the Seismic Performance of Prefabricated Fiber-Reinforced Concrete Beam–Column Joints With Grouted Sleeve Connections

Numerical Simulation Study on the Seismic Performance of Prefabricated Fiber-Reinforced Concrete Beam–Column Joints With Grouted Sleeve Connections

Modelling and Integrating of Experimental Analysis for Predicting the Parameters of Kenaf Fibre-Reinforced Concrete Beam-Column Joint

Experimental investigation on the seismic performance of prefabricated fiber‐reinforced concrete beam‐column joints using grouted sleeve connections

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