传统钢筋配筋混凝土梁采用椰子纤维附加分散配筋的效果分析

Peter Chongo, S. Shambina, Oliver Tembo
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引用次数: 0

摘要

混凝土作为一种建筑材料在世界范围内被广泛使用。然而,由于其抗拉强度低,其在建筑结构中的使用受到限制。采用钢筋加固可以部分解决这一问题,也可以采用各种类型纤维的分散加固。这组作者提出了一种同时用钢筋对混凝土结构进行传统加固的方法,另外用天然椰子纤维进行分散加固,这种方法相对便宜,在非洲、亚洲和拉丁美洲的许多国家广泛使用。本研究的目的是通过比较由传统混凝土制成的梁和用椰子纤维额外分散加固的类似梁所需的钢筋(按重量计)来分析所提出的解决方案的有效性。梁的挠曲和开裂进行了研究。分析使用Autodesk Robot Structural analysis Professional 2022软件进行。结果表明,与传统钢筋混凝土制成的类似梁相比,用椰子纤维额外加固的梁所需的钢筋(按重量计)减少了11%。此外,与简单的混凝土梁相比,椰子纤维增强梁的挠度减少了6%,应力开裂也明显减少。这些结果证明,工作中提出的方法显着提高了结构中钢筋混凝土的性能,也使钢筋的显著节省成为可能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis for the efficiency of additional dispersed reinforcement using coconut fiber for a concrete beam with traditional steel bar reinforcement
Concrete is widely used as a building material throughout the world. However, its use in building structures is limited due to its low tensile strength. This problem can be partially solved using steel bars reinforcement, as well as using dispersed reinforcement with various types of fibers. The authors propose the simultaneous traditional reinforcement of a concrete structure with steel bars with additional dispersed reinforcement with natural coconut fibers, relatively cheap and widely available in many countries in Africa, Asia and Latin America. The purpose of this study is to analyze the effectiveness of the proposed solution by comparing the required amount of steel reinforcement (by weight) for a beam made of traditional concrete and a similar beam with additional dispersed reinforcement with coconut fibers. Deflections and cracking in beams were investigated. The analysis was carried out using Autodesk Robot Structural Analysis Professional 2022 software. The results showed that a beam additionally reinforced with coconut fiber requires 11% less steel reinforcement (by weight) compared to a similar beam made of traditional reinforced concrete. In addition, the coconut fiber reinforced beam experienced 6% less deflection and significantly less stress cracking compared to a simple concrete beam. These results proved that the approach proposed in the work noticeably improves the performance of reinforced concrete in the structure, and also makes it possible to obtain significant savings in reinforcing steel.
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