Nonlinear analysis of RC beams based on moment–curvature relation

Kwak, Hyo–Gyoung; Kim, Sun-Pil

doi:10.1016/s0045-7949(02)00030-5

Cited by 100 publications

(53 citation statements)

References 3 publications

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“…The curves corresponding to the perfect bond model (this study) and to the strong model (Yang, Chen 2005) approach via the experimental curve, while it is the contrary case, opposite to the results obtained by Kwak, Kim (2002).…”

Section: Numerical Applicationscontrasting

confidence: 65%

Tension Stiffening Bond Modelling of Cracked Flexural Reinforced Concrete Beams/Supleišėjusių Gelžbetoninių Sijų Armatūros Ir Betono Sankibos Modeliavimas

Khalfallah

2008

Journal of Civil Engineering and Management

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Abstract. This paper deals with the analysis of cracked flexural reinforced concrete structures with special highlighting of modelling the interaction between concrete and reinforcement. A new approach based on the bond stress distribution through the transfer length between the zero-slip and the cracked sections is proposed. Since the cracking phenomenon of concrete occurs, the fracture energy changes in order to appeal to the interaction between concrete and steel. The increment of stresses is evaluated by the bond-slip distribution by means of one-dimensional problem. Besides, the 2D nonlinear description of components behaviour, concrete and steel are considered. On numerical modelling level, the interaction property is obtained from a variety of fundamental pull out and push out tests, for the most part this phenomenon does not very well represent the bending members. For this object, this study presents a numerical approach, which can compute the distribution stresses at the steel-concrete interface near flexural crack in reinforced concrete beams. Finally, predictions made by the non-linear finite element analysis program and the non-linear material models for concrete, reinforcing bars and bond slip are in good agreement with the experimental results.

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Section: Numerical Applicationscontrasting

confidence: 65%

Tension Stiffening Bond Modelling of Cracked Flexural Reinforced Concrete Beams/Supleišėjusių Gelžbetoninių Sijų Armatūros Ir Betono Sankibos Modeliavimas

Khalfallah

2008

Journal of Civil Engineering and Management

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“…To obtain a balance between computational accuracy and efficiency, the sectional constitutive model based on classical plasticity theory was proposed in [30]. The advantage of the new model over other sectional models [31,32] is that such a model can account for axial-flexural interaction. The model is summarized as follows.…”

Section: Overview Of Sectional Constitutive Model For Beam-column Elementioning

confidence: 99%

Hybrid simulation of steel frame structures with sectional model updating

Chen

et al. 2016

Earthq Engng Struct Dyn

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SUMMARYHybrid simulations that combine numerical computations and physical experiment represent an effective method of evaluating the dynamic response of structures. However, it is sometimes impossible to take all the uncertain or nonlinear parts of the structure as the physical substructure. Thus, the modeling errors of the numerical part can raise concerns. One method of solving this problem is to update the numerical model by estimating its parameters from experimental data online. In this paper, an online model updating method for the hybrid simulation of frame structures is proposed to reduce the errors of nonlinear modeling of numerical substructures. To obtain acceptable accuracy with acceptable extra computation efforts as a result of model parameter estimation, the sectional constitutive model is adopted, therein considering axial-force and bending-moment coupling; moreover, the unscented Kalman filter is used for parameter estimation of the sectional model. The effectiveness of the sectional model updating with the unscented Kalman filter is validated via numerical analyses and actual hybrid tests on a full-scale steel frame structure, with one column as the experimental substructure loaded by three actuators to guarantee the consistency of the boundary conditions.

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“…2 shows the bi-linear hysteretic model employed here which interrupts the linear response found up to the yielding point. This model has been found to provide close results to reality [29], and for simplification purposes, it is preferred over more complex non-linear representations of stiffness loss such as Bouc-Wen [30] or the model by Kikuchi and Aiken [31]. Fig.…”

Section: Introductionmentioning

confidence: 97%