高温下钢筋混凝土钢筋的性能

4区材料科学 Q2 Engineering

Advances in Materials Science and Engineering Pub Date : 2008-05-15 DOI:10.1155/2008/814137

I. Topcu, C. Karakurt

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引用次数: 79

摘要

火灾作用下钢结构屈服强度和弹性模量等力学性能的恶化被认为是影响钢结构性能的主要因素。在这项研究中，热轧S220和S420钢筋经受高温，以研究这些材料的防火性能。目的是确定钢筋在高温后的剩余力学性能。钢在20、100、200、300、500、800和950°C的温度下承受3小时，并进行了拉伸试验。研究了温度对S220和S420合金力学性能的影响。温度升高使钢筋的各项力学性能下降。可以看出，高温对S420钢力学性能的影响大于S220钢。

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Properties of Reinforced Concrete Steel Rebars Exposed to High Temperatures

The deterioration of the mechanical properties of yield strength and modulus of elasticity is considered as the primary element affecting the performance of steel structures under fire. In this study, hot-rolled S220 and S420 reinforcement steel rebars were subjected to high temperatures to investigate the fire performance of these materials. It is aimed to determine the remaining mechanical properties of steel rebars after elevated temperatures. Steels were subjected to 20, 100, 200, 300, 500, 800, and 950∘C temperatures for 3 hours and tensile tests were carried out. Effect of temperature on mechanical behavior of S220 and S420 were determined. All mechanical properties were reduced due to the temperature increase of the steel rebars. It is seen that mechanical properties of S420 steel was influenced more than S220 steel at elevated temperatures.

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来源期刊

Advances in Materials Science and Engineering Materials Science-General Materials Science

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Advances in Materials Science and Engineering is a broad scope journal that publishes articles in all areas of materials science and engineering including, but not limited to: -Chemistry and fundamental properties of matter -Material synthesis, fabrication, manufacture, and processing -Magnetic, electrical, thermal, and optical properties of materials -Strength, durability, and mechanical behaviour of materials -Consideration of materials in structural design, modelling, and engineering -Green and renewable materials, and consideration of materials’ life cycles -Materials in specialist applications (such as medicine, energy, aerospace, and nanotechnology)