Reliability analysis on Q460GJ steel axial compression members

被引：0
作者：
Li J. [1 ,2 ]
Nie S. [1 ,2 ]
Dai G. [1 ,2 ]
Yang B. [1 ,2 ]
机构：
[1] Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing
[2] School of Civil Engineering, Chongqing University, Chongqing
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2021年 / 42卷
关键词：
Axial compression member; Box section; Design index; H-section; Q460GJ steel; Reliability;
D O I：
10.14006/j.jzjgxb.2021.S1.0100
中图分类号：
学科分类号：
摘要：
Chinese domestic steel plate for building structure is a recently developed new type of high-performance steel. It shows better comprehensive performance than conventional high strength low alloy structural steels and is employed in many large-scale projects. The statistical parameters of uncertainty of the calculation model and design values of Q460GJ are urgent to be studied. Based on the results of the overall stable bearing capacity test of eight box section members and fourteen H-section axial compression members fabricated by Q460GJ steel, the statistical parameters of the uncertainty of the calculation model of Q460GJ steel axial compression members were obtained. Combining with the uncertainties of Q460GJ steel material properties and uncertainties of geometrical parameters in previous studies, the statistical parameters of the resistance uncertainty of Q460GJ steel axial compression members were obtained by further statistical analysis. The partial factors for resistance of the Q460GJ steel axial compression members were proposed through reliability method, and the changing law was analyzed. Further, it is recommended to continue to use the resistance partial factor of Q345GJ steel, which is 1.059, as the partial factor for the resistance of Q460GJ steel axial compression members. The corresponding value of design strength is 435 MPa. Finally, the reliability of the recommended partial factor for resistance was checked. The result shows that it meets the reliability requirements. © 2021, Editorial Office of Journal of Building Structures. All right reserved.
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页码：404 / 410
页数：6
相关论文
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