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Tests on GFRP Pultruded Profiles with Channel Section Subjected to Web Crippling

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Abstract

This paper presents an experimental investigation on the web-crippling behavior in glass fibre reinforced polymer (GFRP) pultruded profiles with channel section. A main bending main crack on the web is the main failure mode in the test. The effects of the loading positions, the supporting conditions and bearing lengths on the web crippling behavior of GFRP pultruded profiles with channel section are discussed. Specimens with interior bearing load have higher ultimate strength and all the specimens with loading conditions IG reached the highest ultimate strength but all ruptured. Ultimate strengths of GFRP pultruded profiles with channel section can not be enhanced by increasing the length of the bearing plate. Finite element models were developed to numerically simulate the test results in the terms of ultimate loads, failure modes and load-displacement curves. Based on the results of the parametric study, a number of design formulas are proposed in this paper to accurately predict web crippling ultimate capacity of pultruded GFRP channel sections under four loading and boundary conditions.

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Acknowledgments

This research work was supported by the National Natural Science Foundation of China (Nos. 51278209 and 51478047), Program for New Century Excellent Talents in Fujian Province University (No. 2014FJ-NCET-ZR03), Incubation Programme for Excellent Young Science and Technology Talents in Fujian Province Universities (No. JA13005) and the Research Grant for Young and Middle-aged Academic Staff of Huaqiao University (No. ZQN-PY110). The authors are also thankful to Fuan Steel Structure Engineering Co., Ltd. for the fabrication of test specimens. The tests were conducted in Fujian Key Laboratory on Structural Engineering and Disaster Reduction at Huaqiao University. The support provided by the laboratory staff is gratefully acknowledged.

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Authors and Affiliations

  1. The Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, 100124, China

    Wenxue Zhang

  2. School of Urban Construction, Yangtze University, Jingzhou, 434023, China

    Yu Chen

  3. College of Civil Engineering, Huaqiao University, Xiamen, 361021, China

    Yu Chen

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  1. Wenxue Zhang
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  2. Yu Chen
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Correspondence to Yu Chen.

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Zhang, W., Chen, Y. Tests on GFRP Pultruded Profiles with Channel Section Subjected to Web Crippling. Appl Compos Mater 24, 849–862 (2017). https://doi.org/10.1007/s10443-016-9546-8

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  • DOI: https://doi.org/10.1007/s10443-016-9546-8

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