HRB400Ⅲ钢筋抗震性能研究
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摘要
从强度与塑性的配合、应变时效敏感性、低温脆性、可焊性等方面对Φ20 mm牌号为20MnSiV HRB400Ⅲ钢筋的抗震性能进行了系统的测试和研究。结果表明,钢筋应变时效后韧脆转变温度较高,低温抗震性能差;钢筋碳当量高,焊接性能有待改善;微观分析和成分分析结果表明,为加强钢筋的抗震性能,微合金元素应当适当调整。
The anti-seismic properties,i.e.the coordination of strength and ductility,sensibility of strain aging,brittleness at low temperature and weldability were systematically investigated for 20MnSiV HRB400 reinforced steel bar with the diameter of 20 mm.Test results showed the DBTT of strain aged steel bars rose,and the anti-seismic properties of the steel bars at low temperature were poor.The C_(eq) value of the steel bar was slightly high,as a result the weldability should be advaced.The results of microstructure observation showed that the content of micro-alloying elements should be adjusted in order to enhance anti-seismic properties of steel bar.
The anti-seismic properties,i.e.the coordination of strength and ductility,sensibility of strain aging,brittleness at low temperature and weldability were systematically investigated for 20MnSiV HRB400 reinforced steel bar with the diameter of 20 mm.Test results showed the DBTT of strain aged steel bars rose,and the anti-seismic properties of the steel bars at low temperature were poor.The C_(eq) value of the steel bar was slightly high,as a result the weldability should be advaced.The results of microstructure observation showed that the content of micro-alloying elements should be adjusted in order to enhance anti-seismic properties of steel bar.
引文
[1]Gong Shihong,Sheng Gungmin.The Discuss of the Steel Bar for Anti-seismic Design[J].Earthquake Resistant Engineering,1995,(2):37-42.(龚士弘,盛光敏.抗震设计用钢探讨[J].工程抗震,1995,(2):37-42.)
[2]He Zhaoji.The Mechanics Properties of Metal[M].Beijing:Metallurgical Industry Press,1982.81-82.(何肇基.金属的力学性质[M].北京:冶金工业出版社,1982.81-82.)
[3]Gong Shihong.Vanadium-Titanium Micro-alloyed High Anti-seismic Structural Steels and Its Controlled Rolling Technology[J].Ironand Steel,1998,(1):30-33.(龚士弘.微钒钛高抗震性能建筑结构钢及其控制工艺[J].钢铁,1998,(1):30-33.)
[4]Gong Shihong.High Strain Low Cycle Fatigue Properties of Reforced Bar[J].Iron and Steel,1987,(5):41-47.(龚士弘.钢筋的高应变低周疲劳性能[J].钢铁,1987,(5):41-47.)
[5]Sheng Gungmin,Gong Shihong.Strain-aging Brittleness of Steel in Anti-seismic Design[J].Earthquake Resistant Engineering.1994,(1):26-31.(盛光敏,龚士弘.抗震设计中的钢应变时效脆性问题[J].工程抗震.1994,(1):26-31.)
[6]Gong Shihong.Weldability of Steel for the Use of Buildings in Earthqauke Areas[J].Earthquake Resistant Engineering and Retrofitting,2005,(2):76-80.(龚士弘.地震区建筑用钢的可焊性问题[J].工程抗震与加固改造,2005,(2):76-80.)
[7]Xiao Jimei.Microstructure Analysis Technology[M].Shanghai:Science and Technology Literature Press,1987.724-728.(肖纪美.金相分析技术[M].上海:上海科学技术文献出版社,1987.724-728.)
[8]Zhou Zhenfeng.Elementary Metal Weldability[M].Beijing:Mechanical Industry Press,1982.135-136.(周振丰.金属焊接基础[M].北京:机械工业出版社,1982.135-136.)
[9]Farrar R G,Garrison P L.Acicular Ferrite in Carbon-manganese Weld Metals[J].Journal of Materials,1987,(12):3812-3820.
[2]He Zhaoji.The Mechanics Properties of Metal[M].Beijing:Metallurgical Industry Press,1982.81-82.(何肇基.金属的力学性质[M].北京:冶金工业出版社,1982.81-82.)
[3]Gong Shihong.Vanadium-Titanium Micro-alloyed High Anti-seismic Structural Steels and Its Controlled Rolling Technology[J].Ironand Steel,1998,(1):30-33.(龚士弘.微钒钛高抗震性能建筑结构钢及其控制工艺[J].钢铁,1998,(1):30-33.)
[4]Gong Shihong.High Strain Low Cycle Fatigue Properties of Reforced Bar[J].Iron and Steel,1987,(5):41-47.(龚士弘.钢筋的高应变低周疲劳性能[J].钢铁,1987,(5):41-47.)
[5]Sheng Gungmin,Gong Shihong.Strain-aging Brittleness of Steel in Anti-seismic Design[J].Earthquake Resistant Engineering.1994,(1):26-31.(盛光敏,龚士弘.抗震设计中的钢应变时效脆性问题[J].工程抗震.1994,(1):26-31.)
[6]Gong Shihong.Weldability of Steel for the Use of Buildings in Earthqauke Areas[J].Earthquake Resistant Engineering and Retrofitting,2005,(2):76-80.(龚士弘.地震区建筑用钢的可焊性问题[J].工程抗震与加固改造,2005,(2):76-80.)
[7]Xiao Jimei.Microstructure Analysis Technology[M].Shanghai:Science and Technology Literature Press,1987.724-728.(肖纪美.金相分析技术[M].上海:上海科学技术文献出版社,1987.724-728.)
[8]Zhou Zhenfeng.Elementary Metal Weldability[M].Beijing:Mechanical Industry Press,1982.135-136.(周振丰.金属焊接基础[M].北京:机械工业出版社,1982.135-136.)
[9]Farrar R G,Garrison P L.Acicular Ferrite in Carbon-manganese Weld Metals[J].Journal of Materials,1987,(12):3812-3820.
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