镀铝合金钢筋混凝土梁的有限元建模

IF 2.9 4区 工程技术 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
Omar R. Abuodeh, R. Hawileh, Jamal A. Abdalla
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引用次数: 1

摘要

本文研究了铝合金板外加固钢筋混凝土梁的非线性有限元模型的建立。本数值研究的目的是阐明不同锚固方案对AA板加固梁的承载力、延性和破坏模式的影响。建立了三种有限元模型;即参考RC梁、外粘接AA板的梁(EB)和端部包覆碳纤维增强聚合物(CFRP) u型包覆AA板的梁EB。通过将所开发的有限元模型的载荷-挠度图、最大获得载荷、失效时挠度和失效模式与试验期间报告的结果进行比较,对所开发的有限元模型进行了验证。各有限元模型计算结果的绝对百分比误差均小于5%。此外,还模拟了端板和中间裂纹剥离等早期破坏模式,与试验中观察到的结果非常吻合。最后,验证模型用于采用参数化研究,包括12根不同尺寸的钢筋、AA板和末端锚固的梁。结果表明,所建立的有限元模型可作为辅助结构工程师进行AA板抗弯改造的设计平台。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Finite element modelling of aluminum alloy plated reinforced concrete beams
This study presents a nonlinear finite element (FE) model development of reinforced concrete (RC) beams externally strengthened with aluminum alloy (AA) plates. The aim of this numerical study was to elucidate the effects of different anchorage schemes on the capacity, ductility, and failure mode of AA plate strengthened beams reported in a published test. Three FE models were developed; namely, a reference RC beam, a beam externally bonded (EB) with an AA plate, and a beam EB with an AA plate with carbon fiber reinforced polymers (CFRP) U-wraps at the plate's end. Validation of the developed FE models was carried out by comparing their load-deflection plots, maximum attained loads, deflections at failure, and failure modes with those reported during the test. The results of each FE model yielded an absolute percentage error less than 5%. Moreover, premature failure modes like end-plate and intermediate crack debonding were simulated and closely agreed with those observed during the test. Finally, the validated models were used to employ a parametric study comprising of twelve beams varying in size of steel reinforcement, presence of AA plates, and end-anchorage. It was concluded that the developed FE models could serve as a design platform for assisting structural engineers during flexural retrofit applications using AA plates.
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来源期刊
Computers and Concrete
Computers and Concrete 工程技术-材料科学:表征与测试
CiteScore
8.60
自引率
7.30%
发文量
0
审稿时长
13.5 months
期刊介绍: Computers and Concrete is An International Journal that focuses on the computer applications in be considered suitable for publication in the journal. The journal covers the topics related to computational mechanics of concrete and modeling of concrete structures including plasticity fracture mechanics creep thermo-mechanics dynamic effects reliability and safety concepts automated design procedures stochastic mechanics performance under extreme conditions.
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