Influence of the vertical grouting in the interface between corbel and beam in beam-to-column connections of precast concrete structures – An experimental analysis

Lacerda, Maiza Moana Silva; Silva, Turíbio José da; Alva, Gerson Moacyr Sisniegas; Lima, Maria Cristina Vidigal de

doi:10.1016/j.engstruct.2018.05.113

Cited by 47 publications

(13 citation statements)

References 20 publications

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“…ere are two effective methods for classifying semirigid connections [11,14]. Figure 1 [11] shows the beam-line method.…”

Section: Classification Of Semirigid Connectionmentioning

confidence: 99%

“…where w is uniform distribution load (kN/m), L is the span length of the beam (m), E is the modulus of elasticity of the concrete � (σ/ε) � ((F/A)/(ΔL/L)) (MPa or N/mm 2 ), and I is the moment of inertia for a rectangle concrete beam � (bh 3 /12) (mm 4 ). However, the simplified moment-rotation relationship in Figure 2 was developed for practical applications and to obtain reliable results [14]. M y,lim is the yielding moment, and M u is the flexural strength moment of the connection.…”

Section: Classification Of Semirigid Connectionmentioning

confidence: 99%

“…Connections with low stiffness are classified as pinned connections, and those with high stiffness are fixed connections. However, precast concrete beam-to-column connections are often not fully rigid or perfectly pinned because they exhibit semirigid behaviour [14,15]. ese connections have an intermediate stiffness between fully rigid and perfectly pinned and can partially transmit stress [14,16].…”

Section: Introductionmentioning

confidence: 99%

“…However, precast concrete beam-to-column connections are often not fully rigid or perfectly pinned because they exhibit semirigid behaviour [14,15]. ese connections have an intermediate stiffness between fully rigid and perfectly pinned and can partially transmit stress [14,16]. Even though they have finite stiffness and moment resistance, these connections are usually weaker than the connected elements [17].…”

Section: Introductionmentioning

confidence: 99%

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A Review of Precast Concrete Beam‐to‐Column Connections Subjected to Severe Fire Conditions

Radzi

Hamid

Mutalib

et al. 2020

Advances in Civil Engineering

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Fire exposure can have a significant impact on the structural integrity and robustness of precast concrete beam-to-column connections. Given the importance of fire safety in the design of a structure, it is critical to understand the damage that may occur in the event of a fire to be able to prevent the building from collapsing. No comprehensive study has been carried out to determine the effects of fire on semirigid and pinned concrete beam-to-column connections. Most studies focused on the impact of exposure of rigid concrete beam-to-column connections to high temperatures. This paper is a comprehensive review of the literature on the performance of precast concrete beam-to-column connections under fire conditions. The key areas in this review are the moment-rotation-temperature characteristics and fire effect on precast concrete beam-to-column connections. This paper focuses primarily on the case studies of real fires, large-scale fire tests, computer simulations and analytical models, fire resistance tests on the connection elements, and assessment and rehabilitation of fire-damaged precast concrete. The paper also discusses the current issues and possible challenges.

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“…ere are two effective methods for classifying semirigid connections [11,14]. Figure 1 [11] shows the beam-line method.…”

Section: Classification Of Semirigid Connectionmentioning

confidence: 99%

Section: Classification Of Semirigid Connectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Precast Concrete Beam‐to‐Column Connections Subjected to Severe Fire Conditions

Radzi

Hamid

Mutalib

et al. 2020

Advances in Civil Engineering

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“…For the dry beam-column connection proposed by Vidjeapriya and Jaya [17], the prefabricated reinforced concrete (RC) columns and beams were connected with the cleat angle with different amounts of stiffener. Lacerda et al [18] experimentally investigated the performance of a semi-rigid beam-column connection, in which the PC beams were supported on the corbel of PC columns with continuity rebars.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance of a novel self-sustaining beam-column connection for precast concrete moment-resisting frames

Fan

Feng

et al. 2020

Engineering Structures

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In this paper, a novel prefabricated reinforced concrete (PC) self-sustaining beam-column connection for momentresisting frames was developed to achieve the targets of short erection time, high construction efficiency, low-cost and satisfactory seismic performance. The connection design eliminates the need of temporary supports for the PC beams and slabs during the assembly process in site, and reduces the amount of lateral supports for PC multi-storey columns and formwork for cast-in-place concrete. As the designed thickness of PC U-shells at the beam ends was about 1/3 of the beam width, there could be a marked effect on the achieved integrity of such connections, especially under seismic loading.To investigate the seismic performance of this PC connection, five large-scale PC self-sustaining beam-column connections specimens and one reference conventional RC connection were designed and tested under reverse cyclic loading. The test parameters included the length and area of the flexural reinforcing bars placed at the bottom of PC Ushells, and the anchorage measures (stirrups) inside the PC U-shell. The five precast specimens exhibited similar crack distributions and failure patterns due to the gap-opening between the PC beams and column surface, which was attributed to the reduced effective width and depth of beam cross-section. The test results showed that the use of longer flexural reinforcing bars had little influence on the load-carrying capacity, but contributed to the initial stiffness and energy dissipation capacity. The load-carrying capacity increased by 24% when the area of flexural reinforcing bars increased by 50% in the U-shell region. The incorporation of stirrups in the overlapping region of beam flexural reinforcing bars and longitudinal rebars improved their bond-slip behaviour in specimen PC-S. Compared with specimen PC-C, the energy dissipation capacity of specimen PC-S was improved by 16.5%. Finally, the failure pattern and load-carrying capacity of

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Test and analysis of reinforced concrete (RC) precast shear wall assembled using steel shear key (SSK)

Shen

Pan

Qian

et al. 2019

Earthq Engng Struct Dyn

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Summary Reinforced concrete (RC) precast shear walls are extensively applied in practical engineering, owing to their fast construction speed. However, because of the transport conditions, RC precast shear walls have to be separated into small wall segments during the factory prefabrication procedure before being assembled on site. Typically, wet‐type jointing methods are adopted to link the segments, which is time‐consuming and results in unreliable post‐pouring area strength. To overcome this problem, the novel scheme of the steel shear key (SSK) featuring steel shear panels and combined fillet and plug welding is proposed. Three RC precast shear wall specimens with different linking strength, termed as weakened SSK wall, standard SSK wall, and strengthened SSK wall, respectively, and an integrated shear wall specimen were designed. Quasi‐static cyclic loading was applied to investigate the specimens' dynamic properties. The test results suggest the prefabricated wall segments equipped with SSKs showed reliable stiffness and bearing capacity and were improved in energy dissipation ability, compared with conventional shear walls. As the shear stiffness and number of equipped SSKs increased, the specimens exhibited higher strength, but their ductility and energy dissipation were slightly decreased. Most importantly, the standard SSK wall specimen could achieve satisfactory bearing capacity and deformability and is thus recommended for precast building structures. Finite element method (FEM) models were established to validate the test results, and parametric study analysis was conducted based on the coupling ratio of the SSK walls. Finally, an appropriate coupling ratio range is recommended for practical engineering applications.

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Influence of the vertical grouting in the interface between corbel and beam in beam-to-column connections of precast concrete structures – An experimental analysis

Cited by 47 publications

References 20 publications

A Review of Precast Concrete Beam‐to‐Column Connections Subjected to Severe Fire Conditions

A Review of Precast Concrete Beam‐to‐Column Connections Subjected to Severe Fire Conditions

Seismic performance of a novel self-sustaining beam-column connection for precast concrete moment-resisting frames

Test and analysis of reinforced concrete (RC) precast shear wall assembled using steel shear key (SSK)

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