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首页> 外文期刊>International journal of steel structures >Mechanical Properties of Steel Strands Cooled by Different Methods After High-Temperature Treatment
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Mechanical Properties of Steel Strands Cooled by Different Methods After High-Temperature Treatment

机译：Mechanical Properties of Steel Strands Cooled by Different Methods After High-Temperature Treatment

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摘要

To study the mechanical properties of steel strands cooled by water at different temperatures after high-temperature treatment, a two-stage experiment was conducted. First, tensile tests of 1860-grade steel wire specimens were conducted after heating to different peak temperatures using 15 degrees C water and air for cooling. After that, tensile tests of steel strand specimens with the same heating temperature and different cooling temperatures of water were conducted. The results showed that the ultimate strength of the steel wire first decreased and then increased with increasing heating temperature under the air cooling method but decreased continuously under the water cooling method, which is in agreement with previous research results. The ultimate strength of the steel strands increased as a polynomial function of increasing cooling water temperature until the heating temperature reached 1000 degrees C. When the temperature of the cooling water increased from 10 to 80 degrees C, the stress increased from 19.61 to 139.88 MPa, while the stress increased sharply from 39.56 to 106.57 MPa as the temperature increased from 50 to 60 degrees C. The stress-strain relationship of steel strands cooled by water at different temperatures was also studied. This study may provide a basis for the damage assessment of steel strands after fire-related accidents.

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