A study on the size effect of RC beam–column connections under cyclic loading

Barbhuiya, Salim; Choudhury, Achintya

doi:10.1016/j.engstruct.2015.03.052

Cited by 57 publications

(18 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the case of same stirrup ratios and cross‐section patterns, the failure modes of the RC columns with different structural sizes are closely similar. Moreover, an obvious inclined crack appeared in the failure regions in all the stocky specimens subjected to axial compression, which had also been reported by others . Furthermore, the failure regions of all specimens are in the middle length of the specimens, where the slip or separation behavior between concrete and steel rebar occurred and the lateral expansion is more obvious than other areas.…”

Section: Test Observations and Discussionsupporting

confidence: 83%

“…It is increasingly being accepted that size effect exists in concretes. [1][2][3] In addition, numerous experimental observations [4][5][6][7][8][9][10] have indicated that size effect also existed in RC members involving beams, columns, and beam-column connections. As the dimensions of engineering structures are becoming larger and larger, the safety of these largesized constructions has become one of the most concerned topics.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Size effect tests of stocky reinforced concrete columns confined by stirrups

Jin

et al. 2017

Struct Concrete

View full text Add to dashboard Cite

The paper deals with an experimental investigation of stocky reinforced concrete (RC) columns confined by stirrups with a slenderness ratio of 3. A total of 24 columns were designed and tested. In the tests, the confining action and the size effect for the columns with circular and square cross sections were studied, and the effects of stirrup ratio and concrete cover were also explored. The maximum structural sizes for the circular and squared columns were respectively 576 mm in diameter and 600 mm in cross-sectional width. The test observations indicate that, increasing the stirrup ratio could make the enhancement of the nominal strength and improvement of ductility capacity. At the same stirrup ratios and crosssectional sizes, both the nominal strength of the circular columns is higher and the deformation capacity is larger than those of the square columns. Overall, the failure of the RC columns with a lower stirrup ratio, without cover and having square cross section is more brittle, exhibiting a stronger size effect. In addition, the nominal compressive strengths of all the tested columns are in good agreement with the size effect law (SEL) proposed by Bažant. K E Y W O R D Scircular cross section, concrete cover, confined RC column, nominal compressive strength, size effect, square cross section, stirrup ratio

show abstract

Section: Test Observations and Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Size effect tests of stocky reinforced concrete columns confined by stirrups

Jin

et al. 2017

Struct Concrete

View full text Add to dashboard Cite

show abstract

“…The increase of the use of high-strength concrete and the increase of the structural size would make this issue more vital. Many efforts have been conducted so far to investigate the mechanical behavior of RC structural members under cyclic loading [5,12,16,17,23,28,29]. However, the majority of the existing studies concentrated on normal-strength concrete structures rather than (moderate) highstrength concrete structures.…”

Section: Influences Of Concrete Strength Grade and Loading Pattern Onmentioning

confidence: 98%

“…The mechanical behavior and size effect of RC structural members under monotonic and cyclic loading have been studied extensively over the past few decades [1][2][3][4][5]12,16,17,23,28,29]. The efforts have proved the existence of size effect in RC structures under different loading patterns.…”

Section: Influences Of Concrete Strength Grade and Loading Pattern Onmentioning

confidence: 99%

“…The reliable design of RC structures against external mechanical forces, including earthquake-induced, impact and other types of forces, necessitates a clear understanding of the mechanical behavior of high-strength RC structural members under monotonic and cyclic loading. Moreover, just as demonstrated in lots of experimental observations [1][2][3][4][5], the nominal strengths of RC structural members, involving columns, beams, and beam-column connections, present a pronounced size effect due to the heterogeneity of concrete and the complex mutual effect between steel rebar and the surrounding concrete. Thus, it necessitates the development of accurate and reliable theories for their analysis and assessment.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Mechanical behavior and size effect of moderate high-strength RC columns under monotonic and cyclic axial compression

Jin

Liu

2016

Engineering Structures

View full text Add to dashboard Cite

Size effect and strain rate effect on seismic behavior of reinforced concrete beam‐column joints

Jin

Wan

Dong

et al. 2022

Structural Concrete

View full text Add to dashboard Cite

The mechanical behavior of reinforced concrete (RC) beam-column joints with different sizes under cyclic loads at varying rates was investigated, aiming at attaining a better understanding of the size effect and strain rate effect on RC beam-column joints. First, a 2D mesoscale numerical model was established and verified by existing experimental results. Second, numerical tests regarding seismic performances of RC beam-column joints were carried out. A total of four structural sizes and five strain rates were taken into consideration. The damage patterns, hysteretic curves, skeleton curves, the displacement ductility, the stiffness degradation, and the shear deformation of joints under different working conditions were analyzed. Finally, the size effect and strain rate effect on shear resistance and shear failure mechanism of joints were discussed. In addition, a semitheoretical formula considering structural sizes and strain rates for shear strength calculation was proposed and verified by available experimental data.mesoscale simulation, RC joints, shear strength, size effect, strain rate effect Abbreviations: _ ε, the strain rate, s À1 ; _ ε 0 , the static strain rate, s À1 ; σ t , the tensile stress of concrete, MPa; d t , the tensile damage factor; E 0 , the initial stiffness, N/mm; ε t , the tensile strain of concrete; e ε pl t , the plastic tensile strain of concrete; σ c , the compressive stress of concrete, MPa; d c , the compressive damage factor; ε c , the compressive strain of concrete; e ε pl c , the plastic compressive strain of concrete; f c,imp,k , the compressive strength of concrete under high strain rate, MPa; f cm , the compressive strength of concrete under quasi-static state, MPa; _ ε c , the strain rate under compression, s À1 ; _ ε c0 , the strain rate under compression at quasi-static state, s À1 ; f ct,imp,k , the tensile strength of concrete under high strain rate, MPa; f ctm , the tensile strength of concrete under quasi-static state, MPa; _ ε ct , the strain rate under tension, s À1 ; _ ε ct0 , the strain rate under tension at quasi-static state, s À1 ; f ys , the yielding strength of steel bar under static strain rate, MPa; f yd , the yielding strength of steel bar under dynamic strain rate, MPa; f us , the ultimate strength of steel bar under static strain, MPa; f ud , the ultimate strength of steel bar under dynamic strain rate, MPa; ε y , the yield strain of steel bar; PSD, the displacement amplitude when the specimen yields, mm; T max , the loading time corresponding to PSD, s; V , the loading speed, mm/s; μ, the ductility coefficient; Δ u , the ultimate displacement of joints, mm; Δ y , the yield displacement of joints, mm; K i , the secant stiffness of joints, kN/mm; P i , the peak load of loading cycle, N; Δ i , the displacement corresponding to P i , mm; γ, the shear strain of joint; γ b , the joint shear strain at beam side; γ c , the joint shear strain at column side; h b , the joint height, mm; h c , the joint width, mm; Δ I , Δ II , the lengths of two diagonals in the jo...

show abstract

A study on the size effect of RC beam–column connections under cyclic loading

Cited by 57 publications

References 15 publications

Size effect tests of stocky reinforced concrete columns confined by stirrups

Size effect tests of stocky reinforced concrete columns confined by stirrups

Mechanical behavior and size effect of moderate high-strength RC columns under monotonic and cyclic axial compression

Size effect and strain rate effect on seismic behavior of reinforced concrete beam‐column joints

Contact Info

Product

Resources

About