1. Low-cycle fatigue mashing behaviours of HTRB630 high-strength steel exposed to high temperatures.
- Author
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Li Gao, Mei-Ling Zhuang, Gong Zuo, and Chuanzhi Sun
- Subjects
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HIGH temperatures , *REINFORCING bars , *FATIGUE life , *STEEL bars , *STEEL fatigue , *STRAIN energy - Abstract
The tensile test and low-cycle fatigue test of HTRB630 high-strength steel bars after high-temperature exposure were investigated. Based on the plastic strain energy density theory of mashing behaviours, the values of parameters K and n in the Ramberg--Osgood stress--strain relationship were obtained. The Coffin--Manson model was modified for further modelling of specimens exposed to different temperatures. A fitted formula for the relationship between the plastic strain energy density and fatigue life of HTRB630 high-strength steel bar specimens was established. The parameters obtained in this study can provide a reference for further investigation of the seismic performance of HTRB630 steel bars reinforced concrete structures after exposure to high temperatures. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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