Ultimate capacity prediction of RC and SFRC beams with low shear span-depth ratio using NLFEA and inverse analysis

IF 1.4 4区工程技术

Revista de la Construccion Pub Date : 2022-01-01 DOI:10.7764/rdlc.21.3.717

C. A. Benedetty, Ingrid R. Irreño, J. J. Martínez, L. C. Almeida, L. Trautwein, P. A. Krahl

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引用次数: 0

Abstract

In this study, the capacity and ultimate behavior of Reinforced Concrete (RC) and Steel Fiber Reinforced Concrete (SFRC) beams are evaluated. Nonlinear Finite Element Analysis (NLFEA) and the inverse analysis technique were used to model its structural response using the ATENA finite element software. The smeared crack approach, the crack band model, and advanced constitutive models were used to reproduce concrete fracture. The analyzed beams were subjected to rupture in a four-point bending test setup. The relationship between the shear span and the depth of the beams was 1.5. Four scenarios were analyzed, RC beams with and without stirrups, and SFRC beams without stirrups with volumes of 0.57% and 0.76%. The results obtained in the modeling are discussed in terms of the ability of the models to numerically reproduce the relationships: load versus displacement, load versus strain, crack patterns, and failure modes. The analysis techniques allowed to reproduce the experimental response of the beams with good agreement. They show great potential to solve structural engineering problems

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低剪跨深比RC和SFRC梁极限承载力的NLFEA和逆分析

在本研究中，钢筋混凝土(RC)和钢纤维混凝土(SFRC)梁的承载力和极限性能进行了评估。采用非线性有限元分析(NLFEA)和逆分析技术，利用ATENA有限元软件对其结构响应进行建模。采用涂抹裂缝法、裂缝带模型和高级本构模型对混凝土断裂进行了模拟。所分析的梁在四点弯曲试验装置中遭受破裂。剪力跨与梁深的关系为1.5。分析了钢筋混凝土梁有箍筋和无箍筋以及无箍筋体积分别为0.57%和0.76%的钢筋混凝土梁4种情况。根据模型数值再现关系的能力，讨论了在建模中获得的结果:载荷与位移，载荷与应变，裂纹模式和破坏模式。分析技术可以很好地再现梁的实验响应。它们在解决结构工程问题方面显示出巨大的潜力

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来源期刊

Revista de la Construccion 工程技术-工程：土木

CiteScore

2.30

自引率

21.40%

发文量

期刊介绍： The Journal of Construction is aimed at professionals, constructors, academics, researchers, companies, architects, engineers, and anyone who wishes to expand and update their knowledge about construction. We therefore invite all researchers, academics, and professionals to send their contributions for assessment and possible publication in this journal. The publications are free of publication charges. OBJECTIVES The objectives of the Journal of Construction are: 1. To disseminate new knowledge in all areas related to construction (Building, Civil Works, Materials, Business, Education, etc.). 2. To provide professionals in the area with material for discussion to refresh and update their knowledge. 3. To disseminate new applied technologies in construction nationally and internationally. 4. To provide national and foreign academics with an internationally endorsed medium in which to share their knowledge and debate the topics raised.