Test on pultruded GFRP I-section under web crippling |
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| Affiliation: | 1. School of Urban Construction, Yangtze University, Jingzhou, China;2. College of Civil Engineering, Huaqiao University, Xiamen, China;1. Department of Civil and Environmental Engineering, Dhofar University, Salalah, Oman;2. School of Civil Engineering and Environmental Science, The University of Oklahoma, USA;1. Department of Bridge Engineering, Tongji University, Shanghai, China;2. Department of Civil and Environment Engineering, University of California, Irvine, CA, USA;3. Department of Civil and Environment Engineering, University of California, Davis, CA, USA;1. Roads & Bridges Department, Rzeszow University of Technology, 12, Al. Powstańców Warszawy, 35-959 Rzeszow, Poland;2. R&D Department, Mostostal Warszawa S.A., 12A, Konstruktorska Str., 02-673 Warszawa, Poland;1. CEris, ICIST, DECivil, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal;2. Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia;3. Composite Construction Laboratory (CCLab), École Polytechnique Fédérale de Lausanne, BP 2220, Station 16, CH-1015 Lausanne, Switzerland;1. Arup, Naritaweg 118, 1043 CA Amsterdam, the Netherlands;2. Delft University of Technology, Stevinweg 1, 2628CN Delft, the Netherlands |
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| Abstract: | This paper presents the details of experimental and numerical research study on web crippling property of pultruded GFRP I-section under concentrated web crippling loadings. A total of 12 pultruded GFRP I-section with different loading conditions and bearing lengths was tested. The experimental scheme, failure modes and load–displacement curves were also presented. The investigation was focused on the effects of different loading condition and bearing length on web crippling ultimate capacity and ductility of pultruded GFRP I-section. The failure mode comprised longitudinal bending main crack, bending wrinkling cracks and shear cracks. Specimens with interior bearing load had slightly higher ultimate strength and greater deformation capacity than those of specimens with end bearing load. The ultimate strengths usually decreased with the increase of the bearing length except IG condition. Finite element models were developed to numerically simulate the tests performed in the experimental investigations by using commercial ABAQUS software. Based on the results of the parametric study, a number of design formulas proposed in this paper can be successfully employed as a design rule for predicting web crippling ultimate capacity of pultruded GFRP I-section under four loading and boundary conditions by using single parameter analysis. |
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| Keywords: | A. Glass fibres B. Strength C. Finite element analysis (FEA) D. Mechanical testing E. Pultrusion |
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