Structural behavior of hybrid reinforced concrete beam-column joints under cyclic load: State of the art review

Nadir, Wissam; Ali, Ammar Yaser; Kadhim, Majid M.A.

doi:10.1016/j.cscm.2021.e00707

Cited by 11 publications

(5 citation statements)

References 35 publications

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“…Although the superior improvement achieved by HPFRCC for non-seismic detailed exterior beam-column joints, the failure mechanism was still a joint shear failure. This proves that transverse reinforcement in the joint core cannot be totally eliminated in the external beam-column joint even when HPFRCC is used in the joint region [23]. In comparison, total elimination of transverse reinforcement can be achieved by utilizing HPFRCC in interior beam-column joints [17].…”

Section: Introductionmentioning

confidence: 95%

Structural behavior of ultra-high performance concrete corner beam-column joint under bidirectional loading

Nadir

Ali

2023

Preprint

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In the past few decades, extensive experimental research has been focused on studying the performance of beam-column joints under cyclic load due to their involvement in the collapse of several reinforced concrete structures during earthquakes. However, the behavior of beam-column joints under monotonic load, especially bidirectional monotonic load, has not been well-described. This study aims to enhance the performance of reinforced concrete corner beam-column joints subjected to bidirectional monotonic loads by utilizing ultra-high performance concrete (UHPC). Four scaled RC corner beam-column joints were constructed, with two made entirely of normal strength concrete (NSC) and the other two utilizing UHPC in the joint region. The variables were the material and the spacing of transverse reinforcement in the joint region. In all tested specimens, the transverse reinforcement in the joint region was eliminated to reduce the congestion of steel reinforcement in this region. The results indicate that utilizing UHPC in the joint region significantly improves the performance of the corner beam-column joint. The main result was a shift in the failure mode of the tested specimen from brittle failure caused by joint shear failure to flexural failure by the development of a plastic hinge at the joint-beam interface. Additionally, the UHPC joint showed superior performance in terms of joint shear capacity, load carrying capacity, energy absorption, and damage tolerance, despite the removal of transverse reinforcement in the joint core. Furthermore, using UHPC in the joint region allows for a reduction in the transverse reinforcement in beams and columns, thus eliminating the congestion of steel reinforcement in the joint region.

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Section: Introductionmentioning

confidence: 95%

Structural behavior of ultra-high performance concrete corner beam-column joint under bidirectional loading

Nadir

Ali

2023

Preprint

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“…The seismic performance of BCJs is a key issue limiting the development of PRC structures (Nadir et al, 2021;Xue et al, 2021). The seismic performance of PRC BCJs with wet connections is usually closer to that of cast-inplace concrete (CPRC) BCJs (Guan et al, 2019;Xia et al, 2020).…”

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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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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“…During construction, there are many difficulties in the field assembly methods and reinforcement connections 7–9 . The performance of beam‐column joint connection directly affects the seismic performance of RC structures 10,11 …”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9] The performance of beam-column joint connection directly affects the seismic performance of RC structures. 10,11 For PRC frame structures, the beam-column joints are usually made with post-cast conventional concrete in the joint core zone, which is referred to as wet connections. The performance of PRC structures built by wet connections tends to be closer to that of CPRC structures.…”

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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Structural behavior of hybrid reinforced concrete beam-column joints under cyclic load: State of the art review

Cited by 11 publications

References 35 publications

Structural behavior of ultra-high performance concrete corner beam-column joint under bidirectional loading

Structural behavior of ultra-high performance concrete corner beam-column joint under bidirectional loading

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

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

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