Mechanical properties of 1670 MPa parallel wire strands at elevated temperatures

Du, Yong; Qi, Hong-hui; Jian, Jiang; Liew, J.Y. Richard; Li, Guoqiang

doi:10.1016/j.conbuildmat.2020.120582

Cited by 23 publications

(3 citation statements)

References 20 publications

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“…According to the test data, fitting equations for reduction factors of mechanical properties of steel wires after exposed to elevated temperature are given as follows, 4.4.2. Proportional limit (9) where, and σp are the proportional limit of the steel wire after cooling from temperature T and at ambient temperature, respectively.…”

Section: Fitting Equation For Reduction Factorsmentioning

confidence: 99%

“…Shakya et al [6] studied the mechanical performance of steel cables composed of 7 Grade 1860 steel wires at elevated temperatures, and gave an empirical equation for the mechanical properties of steel cables as a function of the temperature. Du et al [7][8][9][10] carried out tensile tests at elevated temperatures on a Grade 1670 steel cable, a Grade 1670 parallel steel wire strand, and a Grade 1860 steel cable, and revealed the relationship between the reduction factor of mechanical behaviors and the temperature. Sun et al [11][12][13] conducted tensile tests at elevated temperatures on a Grade 1500 stainless steel cable, a Grade 1670 high-vanadium cable, and a Grade 1770 steel wire coated with 5% zinc-aluminum alloy, and obtained a reduction factor equation for mechanical properties of steel cables and steel wires.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigation on Mechanical Properties of Grade 1670 Steel Wires Under and After Elevated Temperature

2023

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Grade 1670 steel wires were selected for elevated-temperature and post-elevated-temperature tensile tests. The test data were analyzed through comparison with the results in existing literatures. The elevated-temperature test results indicate that, mechanical properties of the steel wires degraded with the increase of temperature. The mechanical behaviors of the steel wires degraded rapidly at the temperature exceeding 300°C, and the load-carrying ability was substantially lost when the temperature increased up to 700°C. In the post-elevated-temperature test, the modulus of the steel wire was almost completely recovered after cooling from the elevated temperatures. The nominal yield strength and ultimate strength degraded obviously after cooling from the temperature exceeding 400°C. Based on the test data, the reduction factors of the mechanical properties at and after elevated temperatures are fitted as a function of the temperature, and constitutive models of the steel wires are established. The results can provide technical supports for the analysis of fire performance of prestressed cable support structures, and their post-fire repair.

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Section: Fitting Equation For Reduction Factorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Mechanical Properties of Grade 1670 Steel Wires Under and After Elevated Temperature

2023

View full text Add to dashboard Cite

show abstract

“…Shakya et al [6] studied the mechanical performance of steel cables composed of 7 Grade 1860 steel wires at elevated temperatures, and gave an empirical equation for the mechanical properties of steel cables as a function of the temperature. Du et al [7][8][9][10] carried out tensile tests at elevated temperatures on a Grade 1670 steel cable, a Grade 1670 parallel steel wire cable, and a Grade 1860 steel cable, and revealed the relationship between the reduction factor of mechanical behaviors and the temperature. Sun et al [11][12][13] conducted tensile tests at elevated temperatures on a Grade 1500 stainless steel cable, a Grade 1670 high-vanadium cable, and a Grade 1770 steel wire coated with 5% zinc-aluminum alloy, and obtained a reduction factor equation for mechanical properties of steel cables and steel wires.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Mechanical Properties of Grade 1670 Steel Wires at and After Elevated Temperature

2022

View full text Add to dashboard Cite

Grade 1670 steel wires were selected for elevated-temperature and post-elevated-temperature tensile tests. The test data were analyzed through comparison with the results in existing literatures. The elevated-temperature test results indicate that, mechanical properties of the steel wires degraded with the increase of temperature. The mechanical behaviors of the steel wires degraded rapidly at the temperature exceeding 300°C; and the load-carrying ability was substantially lost when the temperature increased up to 700°C. In the post-elevated-temperature test, the modulus of the steel wire was substantially completely recovered after cooling from the elevated temperatures; the nominal yield strength and ultimate strength degraded obviously after cooling from the temperature exceeding 400°C. Based on the test data, the reduction factors of the mechanical properties at and after elevated temperatures were fitted as a function of the temperature, and constitutive models of the steel wires were established. The results can provide technical supports for the analysis of fire performance of prestressed cable support structures, and their post-fire repair.

show abstract

Investigation into the Prestress Loss and Thermal Expansion Performance of Steel Cables at High Temperature

Sun

et al. 2022

Int J Steel Struct

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Mechanical properties of 1670 MPa parallel wire strands at elevated temperatures

Cited by 23 publications

References 20 publications

Experimental Investigation on Mechanical Properties of Grade 1670 Steel Wires Under and After Elevated Temperature

Experimental Investigation on Mechanical Properties of Grade 1670 Steel Wires Under and After Elevated Temperature

Experimental Investigation on Mechanical Properties of Grade 1670 Steel Wires at and After Elevated Temperature

Investigation into the Prestress Loss and Thermal Expansion Performance of Steel Cables at High Temperature

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