RETRACTED: Comparison of flexural capacity of different hollow slab beams with/without pavement layer reinforced by steel plates
Multidiscipline Modeling in Materials and Structures
ISSN: 1573-6105
Article publication date: 10 December 2021
Issue publication date: 4 March 2022
Retraction notice
The publisher of Multidiscipline Modeling in Materials and Structures wishes to retract the article Liu, L., Wang, L. and Xiao, Z. (2022), “Comparison of flexural capacity of different hollow slab beams with/without pavement layer reinforced by steel plates”, Multidiscipline Modeling in Materials and Structures, Vol. 18 No. 1, pp. 95-110, https://doi.org/10.1108/MMMS-07-2021-0134. It has come to our attention that a large portion of this article is taken, without full and proper attribution, from an earlier work by Long Liu, Lifeng Wang, Ziwang Xiao (2021) “Flexural bearing capacity of RC hollow slab beam strengthened by steel plates of different thicknesses”, International Journal of Structural Integrity, Vol. 12 No. 4, pp. 613-628, https://doi.org/10.1108/IJSI-04-2021-0041. The submission guidelines for Multidiscipline Modeling in Materials and Structures make it clear that articles must be original. The publisher of the journal sincerely apologizes to the readers.
Abstract
Purpose
Reinforcement of reinforced concrete (RC) beams in-service have always been an important research field, anchoring steel plate in the bottom of the beams is a kind of common reinforcement methods. In actual engineering, the contribution of pavement layer to the bearing capacity of RC beams is often ignored, which underestimates the bearing capacity and stiffness of RC beams to a certain extent. The purpose of this paper is to study the effect of pavement layer on the RC beams before and after reinforcement.
Design/methodology/approach
First, static load experiments are carried out on three in-service RC hollow slab beams, meanwhile, nonlinear finite element models are built to study the bearing capacity of them. The nonlinear material and shear slip effect of studs are considered in the models. Second, the finite element models are verified, and the numerical simulation results are in good agreement with the experimental results. Last, the finite element models are adopted to carry out the research on the influence of different steel plate thicknesses on the flexural bearing capacity and ductility.
Findings
The experimental results showed that pavement layers increase the flexural capacity of hollow slab beams by 16.7%, and contribute to increasing stiffness. Ductility ratio of SPRCB3 and PRCB2 was 30% and 24% lower than that of RCB1, respectively. The results showed that when the steel plate thickness was 1 mm–6 mm, the bearing capacity of the hollow slab beam increased gradually from 2158.0 kN.m to 2656.6 kN.m. As the steel plate thickness continuously increased to 8 mm, the ultimate bearing capacity increased to 2681.0 kN.m. The increased thickness did not cause difference to the bearing capacity, because of concrete crushing at the upper edge.
Originality/value
In this paper, based on the experimental study, the bearing capacity of hollow beam strengthened by steel plate with different thickness is extrapolated by finite element simulation, and its influence on ductility is discussed. This method not only guarantees the accuracy of the bearing capacity evaluation, but also does not require a large number of samples, and has certain economy. The research results provide a basis for the reinforcement design of similar bridges.
Keywords
Acknowledgements
This study is supported by two key funds: (1) Curriculum Innovation Funds provided by the Department of Education, Heilongjiang Province, China (SJGZ20180003); (2) The Fundamental Research Funds for the Central Universities (2572019CP02).
Citation
Liu, L., Wang, L. and Xiao, Z. (2022), "RETRACTED: Comparison of flexural capacity of different hollow slab beams with/without pavement layer reinforced by steel plates", Multidiscipline Modeling in Materials and Structures, Vol. 18 No. 1, pp. 95-110. https://doi.org/10.1108/MMMS-07-2021-0134
Publisher
:Emerald Publishing Limited
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