Shear behavior of partially encased composite I-girder with corrugated steel web: Experimental study |
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| Affiliation: | 1. Department of Bridge Engineering, Tongji University, Shanghai, China;2. Department of Civil and Environmental Engineering, Waseda University, Tokyo, Japan;1. Faculty of Civil Engineering, Architecture and Urban Planning, University of Campinas, Zip-code 13083-852 Campinas, SP, Brazil;2. Department of Civil Engineering, Federal University of São Carlos, Zip-code 13565-905 São Carlos, SP, Brazil;1. Department of Structural Engineering, Faculty of Engineering, Tanta University, Tanta, Egypt;2. Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, College of Civil Engineering, Southeast University, Nanjing, China;1. Department of Steel Structures and Structural Mechanics, Politehnica University of Timisoara, Timisoara, Romania;2. Laboratory of Steel Structures, Romanian Academy—Timisoara Branch, Timisoara, Romania;3. Technical University of Cluj-Napoca, Cluj-Napoca, Romania;1. School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, PR China;2. School of Civil Engineering, Yantai University, Yantai 264005, PR China;1. Department of Structural Engineering, Faculty of Engineering, Tanta University, Tanta, Egypt;2. Free Structural Engineer, Egypt;3. School of Civil, Environmental and Mining Engineering, Faculty of Engineering, Computing and Mathematics, The University of Western Australia, Australia;1. Civil Engineering Department, Sohag University, Egypt;2. Civil Engineering Department, Minia University, Egypt;3. Civil Engineering Department, Albaha University, Saudi Arabia;4. Civil Engineering Department, Beni-Suef University, Egypt;5. Civil Engineering Department, Sohag University, Egypt |
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| Abstract: | A new type of partially encased composite I-girder with corrugated steel web has been proposed to improve the structural performance of continuous girders under hogging moment. The shear behavior of such partially encased composite I-girders under anti-symmetric loading has been experimentally and analytically investigated. Experimental results show that the partially encased composite girders has superior shear strength compared to steel I-girders, since shear bucking of steel web is restricted by concrete encasement. The shear stiffness of the composite section is based on the total summation of corrugated web and concrete encasement with average thickness before cracking, and the ratio of shear resistance shared by the steel web and the concrete encasement depends on their shear stiffness. In addition, predicted shear strength of the partially encased composite girder with corrugated web is proposed according to the experimental failure mode and strain distribution. The analytical shear stiffness and shear resistance ratio at the elastic stage are verified by experimental results. And the calculated shear strength for steel and composite girders agree well with the experimental results. The comparison shows that the proposed analytical methods can be applied in predicting elastic shear stiffness and design shear strength for such partially encased composite girders with corrugated web. |
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