Micro-mechanical analysis of splitting failure in concrete reinforced with fiber reinforced plastic rods |
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| Affiliation: | 1. College of Civil Engineering, Nanjing Tech University, 30 South Puzhu RD., Nanjing 211816, China;2. Dept. of Bridge Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 200092, China;3. Shanghai Urban Construction Design & Research Institute (Group) Co., Ltd., 3447 Dongfang RD., Shanghai 200125, China;1. Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo, Tokyo 202-8585, Japan;2. Life Science Division, Daiwa Can Company, 2-7-2 Marunouchi, Chiyoda, Tokyo 100-0005, Japan;3. Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo, Tokyo 202-8585, Japan;1. Department of Geology, University at Buffalo, Buffalo, NY 14260, USA;2. Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN 47907, USA;3. Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, USA;4. Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen k, Denmark |
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| Abstract: | The present investigation provides a micro-mechanical model for the splitting failure analysis of fiber reinforced plastic (FRP) reinforced concrete members subjected to longitudinal tensile stresses. The model consists of three co-axial cylinders: (a) the inner elastic FRP rod; (b) the mid cracked part of concrete; and (c) the outer elastic part of concrete. The anisotropic properties of reinforcement, the compatibility of longitudinal strain at interface and the effect of Poisson's ratio of concrete are taken into account in the analysis. The method can be used to predict the stress distributions in the hybrid structure and the relations between the growth of cracks and the applied end forces. It is found that the number of splitting cracks and the material properties of the anisotropic FRP rods are not the dominant factors in splitting failure. It is also observed that neglecting Poisson's ratio of cracked concrete may under-estimate stresses in the hybrid structure. |
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