Bridge steel fiber reinforced concrete specimens under high loading rates

Q1 Chemical Engineering
Shamsoon Fareed , Pegah Behinaein , Ali Almonbhi , Wadea Sindi , Ayed Alluqmani
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引用次数: 0

Abstract

Due to its inherent properties, concrete exhibits brittle failure once it attains its peak compressive and tensile strengths. As concrete is weak in tension, it is usually reinforced with steel bars to resist tensile stresses produced by the applied loading in its superstructure and infrastructure. However, over the last few decades, steel fibers have also been used in preparing concrete for the construction of structural components. Based on some published studies, it has been observed that the use of steel fibers significantly decreases the brittleness associated with concrete and causes an increase in peak compressive and tensile strengths. Furthermore, it was also observed that its behavior significantly differs under increasing compressive loading rates when compared under static loads. However, these studies have been unable to identify the causes of this change in behavior under increasing loading rates; therefore, in this study, a detailed numerical investigation has been carried out using non-linear finite-element analysis software, ABAQUS. It was found that the behavior exhibited by steel fiber reinforced concrete specimens under high rates of compressive loading represents a structural response rather than material behavior.

高加载率下的桥梁钢纤维加固混凝土试件
由于其固有特性,混凝土一旦达到最高抗压和抗拉强度,就会出现脆性破坏。由于混凝土的抗拉强度较弱,因此通常使用钢筋对其进行加固,以抵抗上层建筑和基础设施中的外加荷载所产生的拉应力。不过,在过去的几十年里,钢纤维也被用于配制混凝土,以建造结构部件。根据一些已发表的研究,人们发现使用钢纤维可显著降低混凝土的脆性,并提高抗压和抗拉强度峰值。此外,研究还发现,与静态荷载相比,钢纤维在抗压荷载率增加的情况下表现出明显的不同。然而,这些研究都无法确定在加载速率增加时这种行为变化的原因;因此,在本研究中,我们使用非线性有限元分析软件 ABAQUS 进行了详细的数值研究。研究发现,钢纤维增强混凝土试样在高压缩率加载下的行为是一种结构响应,而非材料行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of King Saud University, Engineering Sciences
Journal of King Saud University, Engineering Sciences Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
12.10
自引率
0.00%
发文量
87
审稿时长
63 days
期刊介绍: Journal of King Saud University - Engineering Sciences (JKSUES) is a peer-reviewed journal published quarterly. It is hosted and published by Elsevier B.V. on behalf of King Saud University. JKSUES is devoted to a wide range of sub-fields in the Engineering Sciences and JKSUES welcome articles of interdisciplinary nature.
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