RESEARCH ON THE INITIAL FAILURE LOAD OF COMPOSITEFIBER REINFORCED PLASTIC BOX GIRDER

Abstract

Abstract: A theoretical calculation method for the initial failure load of CFRP box girder is established by combining the classical laminated plate theory and the folding plate theory. The initial failure load of the box girder of 【0₄/±45/0₄】, 【0₂/±45/0₂/±45/0₂】 and 【±45/0₂/±45/0₂/±45】 is calculated by this method. At the same time, the three-point bending experiment is carried out on the CFRP box girder by using DNS100 electronic universal testing machine. The theoretical calculation value of the initial failure load of the composite box girder is compared with the experimental value. The theoretical calculation error is less than 4%. The results show that the theoretical calculation method of the initial failure load of the composite box girder is correct and the higher the 0° ply ratio, the initial failure load of composite box girder is higher.

Key words: CFRP, box girder, initial failure load

CLC Number:

TB332

DING Guo-ping, ZHU Yong, DAI Zi-lun, TAN Jian. RESEARCH ON THE INITIAL FAILURE LOAD OF COMPOSITEFIBER REINFORCED PLASTIC BOX GIRDER[J]. Fiber Reinforced Plastics/Composites, 2017, 0(11): 5-11.

References

[1] 蒋鞠慧, 陈敬菊. 复合材料在轨道交通上的应用与发展[J] . 玻璃钢/复合材料, 2009(6): 81-85.
[2] 汤旭, 李征, 孙程阳. 先进复合材料在航空航天领域的应用[J] . 中国高新技术企业, 2016(13): 00259-00259.
[3] 林德春, 潘鼎, 高健, 等. 碳纤维复合材料在航空航天领域的应用[J] . 纤维复合材料, 2007(1): 18-28.
[4] 周仕刚, 潘志文, 董国华. 复合材料薄壁箱梁的设计[J] . 纤维复合材料, 2014(2): 15-18, 32.
[5] 沈军, 谢怀勤. 先进复合材料在航空航天领域的研发与应用[J] . 材料科学与工艺, 2008, 16(5): 737-740.
[6] 袁耀良, 薛元德. 复合材料薄壁箱形梁的铺层设计和强度分析[J] . 力学季刊, 1991(3): 44-54.
[7] Sakuraba H, Matsumoto T, Hayashikawa T. A Study on the Flexural Behavior of CFRP Box Beams with Different Laminate Structures[J] . Procedia Engineering, 2011, 14(2): 1845-1854.
[8] Sakuraba H, Matsumoto T, Hayashikawa T. Flexural behavior of CFRP box beams with different laminate structures[C] //Jsce Earthquake Engineering Symposium. Japan Society of Civil Engineers. 2012: 73-87.
[9] Matsumoto T, Sakuraba H. Flexural behavior of CFRP box beams and strain measurement by image analysis[J] . Nihon Kikai Gakkai Ronbunshu A Hen/transactions of the Japan Society of Mechanical Engineers Part A, 2012, 67(2): 550-555.
[10] Goldberg J E,Leve H L.Theory of prismatic folded plate structures[J] . International Assoc for Bridge and Structural Engineering Publications,1957(17): 59-86.
[11] 成传贤, 罗又华, 章向群. 碳纤维矩形薄壁梁弯曲和扭转刚度研究[J] . 力学与实践,1987(S1): 111-115.
[12] 赵玉如. 碳纤维薄壁箱梁几何非线性特性试验研究[D] . 兰州: 兰州交通大学, 2013.
[13] 李维东. 碳纤维复合材料连续箱梁及悬臂箱梁的剪力滞效应试验研究[D] . 兰州: 兰州交通大学, 2012.
[14] 张威, 汪金花, 景晓颖. 碳纤维增强复合材料桥梁弯曲破坏过程有限元模拟[J] . 玻璃钢/复合材料, 2014(1): 53-58.
[15] 袁威, 胡业发, 张锦光. 碳纤维复合材料矩形截面管抗弯性能研究[J] . 玻璃钢/复合材料, 2017(2): 64-68.
[16] 沈观林, 胡更开, 刘彬. 复合材料力学. 第2版[M] . 北京: 清华大学出版社, 2013.