Analytical model for the torsional response of steel fiber reinforced concrete members under pure torsion |
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| Affiliation: | 1. Dept. of Civil Engineering, Beihang University, Beijing 100191, China;2. State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510641, China;3. Dept. of Civil and Environmental Engineering, Univ. of Windsor, Windsor, Ontario N9B 3P4, Canada;1. School of Environment and Civil Engineering, Jiangnan University, Wuxi 214000, China;2. School of Civil Engineering, Hefei University of Technology, Hefei 230000, China;1. M.Tech Structural Engineering, VIT University, Vellore, TN 632014, India;2. School of Civil and Chemical Engineering (SCALE), VIT University, Vellore, TN 632014, India;1. Department of Civil Engineering, Texas University at El Paso. Member of Center for Transportation Infrastructure Systems (CTIS), El Paso, TX 79968, USA;2. Department of Civil Engineering, Architecture and Georresources, Instituto Superior Técnico, Universidade de Lisboa, 1649-004 Lisbon, Portugal;3. Department of Civil Engineering, Ferdowsi University of Mashhad, Mashhad 91779-48974, Iran;4. Department of Civil Engineering, Faculty of Engineering, Bartin University, 74100 Bartin, Turkey |
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| Abstract: | Rausch space truss theory (1925) is the earliest theory to predict the torsional response of RC members subjected to pure torsion. Softened truss theory proposed by Hsu considering the softening effect of concrete fairly estimates the torsional strength of the members under pure torsion. These theories consider the member to be a cracked one, so that the truss action activates. This assumption reduces the initial torsional stiffness of the cross-section. However the model proposed by Hsu considering the softening effect of concrete fairly estimates the ultimate torque carrying capacity of the RC member. Fiber reinforced concrete is a better option in the construction of blast resistant and earthquake resistant structures. Relatively little research has been reported on the analytical studies of SFRC members subjected to pure torsion. Thus in this paper an attempt has been made to develop an analytical model for predicting the torque–twist response of SFRC members subjected to pure torsional loads considering the softening effect of concrete. Experimental validation was also presented in this paper. |
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