Bond characteristics between CFRP and steel plates in double strap joints

IF 1.7 3区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Advanced Steel Construction Pub Date : 2005-01-01 DOI:10.18057/ijasc.2005.1.2.2

S. Fawzia, X. Zhao, R. Al-Mahaidi, S. Rizkalla

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引用次数: 80

Abstract

This paper describes a series of double strap shear tests loaded in tension to investigate the bond between CFRP sheets and steel plates. Both normal modulus (240 GPa) and high modulus (640 GPa) CFRPs were used in the test program. Strain gauges were mounted to capture the strain distribution along the CFRP length. Different failure modes were observed for joints with normal modulus CFRP and those with high modulus CFRP. The strain distribution along the CFRP length was found to be similar for the two cases. A shorter effective bond length was obtained for joints with high modulus CFRP whereas larger ultimate load carrying capacity can be achieved for joints with normal modulus CFRP when the bond length is long enough. The Hart-Smith Model was modified to predict the effective bond length and ultimate load carrying capacity of joints between the normal modulus CFRP and steel plates. The Multilayer Distribution Model developed by the authors was modified to predict the load carrying capacity of joints between the high modulus CFRP and steel plates. The predicted values agreed well with experimental ones.

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CFRP与钢板在双带连接中的粘结特性

本文介绍了一系列的双带剪切试验，以研究碳纤维布与钢板之间的粘结性。测试程序中使用了正常模量(240 GPa)和高模量(640 GPa) cfrp。安装应变片捕捉沿CFRP长度的应变分布。正常模量CFRP与高模量CFRP接缝的破坏模式不同。两种情况下沿CFRP长度的应变分布相似。高模量碳纤维布节点的有效粘结长度较短，而正常模量碳纤维布节点在粘结长度足够长的情况下可获得较大的极限承载能力。修正Hart-Smith模型，预测法向模量CFRP与钢板之间的有效粘结长度和极限承载能力。对作者建立的多层分布模型进行了修正，以预测高模量碳纤维布与钢板连接节点的承载能力。预测值与实验值吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Steel Construction CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL

CiteScore

2.60

自引率

29.40%

发文量

审稿时长

6 months

期刊介绍： The International Journal of Advanced Steel Construction provides a platform for the publication and rapid dissemination of original and up-to-date research and technological developments in steel construction, design and analysis. Scope of research papers published in this journal includes but is not limited to theoretical and experimental research on elements, assemblages, systems, material, design philosophy and codification, standards, fabrication, projects of innovative nature and computer techniques. The journal is specifically tailored to channel the exchange of technological know-how between researchers and practitioners. Contributions from all aspects related to the recent developments of advanced steel construction are welcome.