Dynamic behavior of reinforced concrete beams under varying rates of concentrated loading

Adhikary, Satadru Das; Li, Bing; Fujikake, Kazunori

doi:10.1016/j.ijimpeng.2012.02.001

Cited by 132 publications

(59 citation statements)

References 8 publications

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“…The specimens of series A (plain concrete) failed abruptly by shear failure with full development of diagonal cracks at shear spans, thereby showing the poor performance of reinforced concrete beams without stirrups against impact, which has been also demonstrated by other authors . The specimens containing SFRC developed either a shear or flexural failure mode (refer to Table ).…”

Section: Experimental Programsupporting

confidence: 62%

Residual behavior of reinforced steel fiber‐reinforced concrete beams damaged by impact

Zanuy

Ulzurrún

2018

Structural Concrete

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The awareness of damage caused by impacts in civil structures has increased during the last decades. Existing research has shown that impact strength of concrete structures can be improved with the addition of steel fibers, but little attention has been paid at the assessment of the structural condition after the impact. In fact, the residual capacity of reinforced steel fiber‐reinforced concrete (SFRC) can be considered as one of the main advantages of the employ of SFRC in structures expected to suffer impact damage. The understanding of the residual capacity of impact‐damaged structures, in terms of strength and energy absorption, might be decisive to safely perform evacuation and recovery operations, as well as evaluate rehabilitation tasks. This paper presents a research on the residual capacity of preimpacted reinforced SFRC beams. Seven mixtures of SFRC are evaluated, including three types of steel fibers and two values of fiber amount (as well as companion unreinforced plain concrete mixture). The research includes an experimental campaign as well as a model to understand the contribution of the SFRC to the strength and ductility of undamaged and damaged specimens. Among the conclusions, it has been found out that the failure mode (i.e., shear‐ or flexure‐governed) of damaged specimens depends on the crack pattern caused by the impact, and it can be different from the failure mode of undamaged specimens.

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Section: Experimental Programsupporting

confidence: 62%

Residual behavior of reinforced steel fiber‐reinforced concrete beams damaged by impact

Zanuy

Ulzurrún

2018

Structural Concrete

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“…The majority of the research in global response was carried out on reinforced concrete beams, since the local damage becomes considerably more important in the case of thin slabs under impacts. Over the past few decades, several studies have been reported for reinforced concrete members subjected to impact loading [7][8][9][10][11][12][13]. Numerical methods, such as the finite element method, are the most used tools in the analysis of impact behaviour of reinforced concrete members, taking into account their global and local response.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of reinforced concrete structures under impact loading

Živaljić

Nikolić

Smoljanović

et al. 2019

Materialwissenschaft Werkst

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This study presents the performance of a combined finite‐discrete element method for prediction of the structural response of reinforced concrete beams under impact loading. A combination of finite and discrete element methods enables the modelling of the concrete and the reinforcement before the concrete cracking, as well as a discontinuous nature of the concrete caused by fracture and fragmentation under high impact loading. Discretization of the concrete with triangular finite elements is coupled with one‐dimensional reinforcing bars embedded inside the concrete finite elements. The cracking in the concrete activates the joint elements used to simulate the non‐linear behavior of both concrete and reinforcement. Numerical analysis based on experimental test data has been carried out to simulate the main features of the reinforced concrete beams impacted by free‐falling drop‐weights. A high level of accuracy was demonstrated in various comparisons between the experimental tests and the analysis results, including peak displacement, crack pattern, damage level and failure modes of reinforced concrete beams.

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“…It has been found that the mechanical behavior of reinforced concrete members under dynamic loading is different from that under static loading. However, study on the mechanical behavior of reinforced concrete members under dynamic loading tests is few described in the existing literature [1,2,3,4,5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Strain Rate on Reinforced Concrete Columns

Wang¹,

Fan²

2017

Proceedings of the 2016 4th International Conference on Renewable Energy and Environmental Technology (ICREET 2016)

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Abstract. In order to study the effect of strain rate on reinforced concrete columns under earthquake action, two group reinforced concrete columns with constant axial load were subjected to cyclic uniaxial and biaxial tests with different loading rates. The experimental program is described. Then, tests results about reinforced concrete columns dynamic behavior are presented and discussed under uniaxial or biaxial tests. Based on the fiber model theory and Timoshenko beam theory, considering the strain rate sensitivity of steel and concrete, a new three-dimensional beam element is proposed. According to the calculation model of reinforced concrete columns mentioned above, the dynamic performances of reinforced concrete columns are simulated which show a good agreement with the test results.

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Dynamic behavior of reinforced concrete beams under varying rates of concentrated loading

Cited by 132 publications

References 8 publications

Residual behavior of reinforced steel fiber‐reinforced concrete beams damaged by impact

Residual behavior of reinforced steel fiber‐reinforced concrete beams damaged by impact

Numerical simulation of reinforced concrete structures under impact loading

Effect of Strain Rate on Reinforced Concrete Columns

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