Compression Response of Cracked Reinforced Concrete

Vecchio, Frank J.; Collins, Michael P.

doi:10.1061/(asce)0733-9445(1993)119:12(3590)

Cited by 356 publications

(130 citation statements)

References 2 publications

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“…The tensile transfer capacity of inclined reinforcement enables the diagonal crack width to be effectively controlled, as pointed out by Vecchio and Collins 17 and provide load transfer mechanism by truss action as proposed by Tan et al 8 As a result, inclined reinforcement around openings can compensate for the reduced beam stiffness owing to diagonal cracks around openings, which is clearly shown by Figs 4 and 5. In addition, the enhanced ductility of concrete struts helps to increase the effective concrete strength, as suggested by many researchers 2,3,7,8,17 and code provisions. 10,12 6.…”

Section: Structural Functions Of Inclined Reinforcement Around Openingsmentioning

confidence: 85%

Inclined reinforcement around web opening in concrete beams

Yang¹,

Ashour²

2007

Proceedings of the Institution of Civil Engineers - Structures

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YesTwelve reinforced-concrete continuous deep beams\ud having web openings within interior shear spans were\ud tested to failure. The main variables investigated were\ud the opening size and the amount of inclined\ud reinforcement around openings. An effective inclined\ud reinforcement factor combining the influence of the\ud amount of inclined web reinforcement and opening size\ud is proposed and used to analyse the structural behaviour\ud of continuous deep beams tested. It was observed that\ud the end support reaction, diagonal crack width and load\ud capacity of beams tested were significantly dependent on\ud the proposed effective inclined reinforcement factor. As\ud this factor increased, the end support reaction and\ud increasing rate of diagonal crack width were closer to\ud those of companion solid deep beams. In addition, a\ud higher load capacity was exhibited by beams having an\ud effective inclined reinforcement factor above 0.077 than\ud the companion solid deep beam. A numerical procedure\ud based on the upper-bound analysis of the plasticity\ud theory was proposed to estimate the load capacity of\ud beams tested. Comparisons between the measured and\ud predicted load capacities showed good agreement

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Section: Structural Functions Of Inclined Reinforcement Around Openingsmentioning

confidence: 85%

Inclined reinforcement around web opening in concrete beams

Yang¹,

Ashour²

2007

Proceedings of the Institution of Civil Engineers - Structures

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“…Concrete behavior is characterized by three consecutive stages: (a) uncracked concrete, (b) after formation of the first crack, and (c) after formation of the second crack, as described by Orakcal et al [10]. Although the concrete stress-strain relationship is fundamentally uniaxial in nature, it also incorporates biaxial softening effects including compression softening (Vecchio and Collins [11]) and hysteretic biaxial damage (Mansour et al [12]). In this study, the uniaxial constitutive model for concrete by Yassin [13] and the stressstrain relationship for steel proposed by Menegotto and Pinto [14] are used in the FSAM formulation.…”

Section: Reinforced Concrete Panel Behaviormentioning

confidence: 99%

Finite Element Modeling of Reinforced Concrete Structural Walls for Performance-Based Seismic Design

Kolozvari¹,

Miller²,

Orakçal³

2017

WIT Transactions on the Built Environment

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A novel finite element modeling approach for nonlinear analysis of reinforced concrete (RC) structural walls is developed and implemented in OpenSees, which is an open-source computational platform widely used in earthquake engineering. The proposed analytical model incorporates a twodimensional RC constitutive panel behavior described with the fixed-strut angle model into a fournode isoparametric quadrilateral finite element model formulation. The modeling approach is used to simulate the responses of two medium-rise RC wall specimens (aspect ratios of 1.5 and 2.0) with predominant shear-flexure interaction responses. Based on detailed comparison of experimental and analytical wall responses, the model is found to be capable of predicting accurately the experimentally-measured response attributes of the cyclic nonlinear wall behavior including lateral strength, stiffness, stiffness degradation, as well as their hysteretic response characteristics. The model also captures interaction between flexural and shear behavior, and provides accurate estimates of the relative contribution of nonlinear flexural and shear deformations to wall lateral displacements and their distributions over the wall height. Finally, the proposed modeling approach describes reasonably well local response characteristics including magnitudes and distributions of strain and stress fields, as well as cracking patterns. Based on the response comparisons presented, model capabilities are assessed and possible model improvements are identified.

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“…The NLFEA was carried out with DIANA [22] using its fixed crack total strain model. The concrete compressive strength was related to the principal tensile strain in accordance with the recommendations of Vecchio and Collins [23]. The concrete tensile strength was taken as 0.33√ as adopted by Sagaseta and Vollum [9].…”

Section: Strut-and-tie Model For Beams With 4 Point Loadsmentioning

confidence: 99%

“…Equating equations (15) and (22) for T d and rearranging gives: (23) in which (24) In the case of beams without shear reinforcement, strut VII vanishes,  =  = 1 and:…”

Section: Derivation Of Design Equations For Stm3mentioning

confidence: 99%