Mathematical Model for Moment-Rotation Curve of High Strength Steel Endplate Connections

被引：0
|
作者：
Qiang X. [1 ]
Chen H. [1 ]
Jiang X. [1 ]
Xi Y. [1 ]
Chen W. [2 ]
机构：
[1] College of Civil Engineering, Tongji University, Shanghai
[2] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai
来源：
Tongji Daxue Xuebao/Journal of Tongji University | 2020年 / 48卷 / 04期
关键词：
Endplate connection; High strength steel; Mathematical model; Moment-rotation curve;
D O I：
10.11908/j.issn.0253-374x.19142
中图分类号：
学科分类号：
摘要：
In order to predict the moment-rotation (M-θ) curve of high strength steel endplate connections at ambient temperature, in fire and after fire, a calculation method for initial stiffness, post-yield stiffness, ultimate flexural resistance and shape parameter is proposed based on the four parameter exponential function, the concept of component method, and equivalent T-stubs. The prediction of moment-rotation curve is then obtained by substituting calculation results into the four parameter exponential function. Moreover, the calculation results and predicted moment-rotation curves are compared with the test results of Q690 and Q960 high strength steel endplate connections at ambient temperature, in fire and after fire. The comparisons demonstrate that the calculation values of flexural resistance are in good agreement with the test values, particularly the relative errors of Q960 are within 5%. Besides, the calculation values of initial stiffness are closer to the test results than those of EN 1993-1-8. Moreover, the predicted moment-rotation curves of Q960 are consistent with the test results and those of Q690 are relatively conservative. © 2020, Editorial Department of Journal of Tongji University. All right reserved.
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页码：471 / 480
页数：9
相关论文
共 37 条
  • [1] Qiang X., Wu N., Ren C., Et al., Research progress in engineering application of high strength steel and beam-column endplate connections, Proceedings of Industrialization of Steel Structure Building and Application of New Technology, pp. 65-73, (2016)
  • [2] Chen Y., Tong L., Chen Y., Research developments of component method for behavior of joints in steel structures, Journal of Architecture and Civil Engineering, 29, 3, (2012)
  • [3] Eurocode 3, design of steel structures, part 1-8: design of joints: EN 1993-1-8, (2005)
  • [4] Standard for design of steel structures: GB 50017-2017, (2017)
  • [5] Wang S., Chen Y., Calculation of initial stiffness of beam-to-column end-plate joint, Engineering Mechanics, 25, 8, (2008)
  • [6] Lui E., Chen W., Strength of H-columns with small end restraints, Structural Engineer-Part B, 61, 1, (1983)
  • [7] Ding J., Shen Z., A practical calculation model for semi-rigid connections, Industrial Construction, 11, (1992)
  • [8] Guo B., Collapse mechanism and design criterion of steel beam-to-column end-plate connections under cyclic load, (2002)
  • [9] Guo B., Gu Q., The strength and stiffness of beam-to-column end-plate connections in multi-story frames, Journal of Building Structures, 25, 2, (2004)
  • [10] Frye M., Morris G., Analysis of flexibly connected steel frames, Canadian Journal of Civil Engineering, 2, 3, (1975)
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