预应力pfgm - rc混合梁界面应力的弹性分析

IF 1.9 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Rabahi Abderezak, Benferhat Rabia, T. H. Daouadji, B. Abbès, Adim Belkacem, F. Abbès
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引用次数: 15

摘要

本文应用线弹性理论,研究了受均布荷载、任意位置单点荷载和两个对称点荷载作用下,粘结预应力功能梯度材料板加固损伤钢筋混凝土梁的界面应力问题。所采用的模型通过假定破坏钢筋混凝土梁纵深处存在线性剪应力,考虑了附著剪切变形。该解决方案适用于用FGM薄板粘合的各种材料制成的梁。结果表明,在功能梯度材料板的末端存在较高的剪应力和正应力集中,这可能导致强化方案在这些位置过早失效。最后,通过对已有解和新解的数值比较,可以清楚地了解梁的各种参数对界面应力分布的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Elastic analysis of interfacial stresses in prestressedPFGM-RC hybrid beams
In this paper, the problem of interfacial stresses in damaged reinforced concrete beams strengthened with bonded prestressed functionally graded material plate and subjected to a uniformly distributed load, arbitrarily positioned single point load, or two symmetric point loads is developed using linear elastic theory. The adopted model takes into account the adherend shear deformations by assuming a linear shear stress through the depth of the damaged RC beam. This solution is intended for application to beams made of all kinds of materials bonded with a thin FGM plate. The results show that there exists a high concentration of both shear and normal stress at the ends of the functionally graded material plate, which might result in premature failure of the strengthening scheme at these locations. Finally, numerical comparisons between the existing solutions and the present new solution enable a clear appreciation of the effects of various parameters of the beams on the distributions of the interfacial stresses.
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来源期刊
Advances in Materials Research-An International Journal
Advances in Materials Research-An International Journal MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
3.50
自引率
27.30%
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0
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