Vibration analysis of steel fiber reinforced self-compacting concrete beam on elastic foundation

IF 2.9 4区工程技术 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Computers and Concrete Pub Date : 2021-02-01 DOI:10.12989/CAC.2021.27.2.085

M. Ozdemir, V. Kobya, M. Yaylı, A. Mardani‐Aghabaglou

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Abstract

In this study, the effect of steel fiber utilization, boundary conditions, different beam cross-section, and length parameter are investigated on the free vibration behavior of fiber reinforced self-compacting concrete beam on elastic foundation. In the analysis of the beam model recommended by Euler-Bernoulli, a method utilizing Stokes transformations and Fourier Sine series were used. For this purpose, in addition to the control beam containing no fiber, three SCC beam elements were prepared by utilization of steel fiber as 0.6% by volume. The time-dependent fresh properties and some mechanical properties of self-compacting concrete mixtures were investigated. In the modelled beam, four different beam specimens produced with 0.6% by volume of steel fiber reinforced and pure (containing no fiber) SCC were analyzed depending on different boundary conditions, different beam cross-sections, and lengths. For this aim, the effect of elasticity of the foundation, cross-sectional dimensions, beam length, boundary conditions, and steel fiber on natural frequency and frequency parameters were investigated. As a result, it was observed that there is a noticeable effect of fiber reinforcement on the dynamic behavior of the modelled beam.

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弹性基础上钢纤维增强自密实混凝土梁的振动分析

研究了钢纤维用量、边界条件、不同梁截面和长度参数对弹性基础上纤维增强自密实混凝土梁自由振动性能的影响。在欧拉-伯努利推荐的梁模型分析中，采用了Stokes变换和傅立叶正弦级数相结合的方法。为此，除不含纤维的控制梁外，采用体积比为0.6%的钢纤维制备了3个SCC梁单元。研究了自密实混凝土混合料随时间变化的新鲜性能和部分力学性能。在模拟梁中，根据不同的边界条件、不同的梁截面和长度，分析了四种不同的梁试件，钢纤维增强和纯(不含纤维)SCC的体积为0.6%。为此，研究了基础弹性、截面尺寸、梁长、边界条件和钢纤维对固有频率和频率参数的影响。结果表明，纤维增强对模型梁的动力性能有明显的影响。

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来源期刊

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

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.