Wide-shallow beams with and without steel fibres: A peculiar behaviour in shear and flexure |
| |
Affiliation: | 1. School of Sustainable Engineering and Built Environment, Arizona State University, Tempe, AZ 85287-8706, United States;2. IMMS Co., Ltd., Bangkok 10110, Thailand;1. Department of Civil and Environmental Engineering, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ, Brazil;2. Department of Structural Engineering, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil;1. Department of Civil, Environmental, Architectural Engineering and Mathematics (DICATAM), University of Brescia, Brescia, Italy;2. Products/Applications Aggregates & Concrete, Global Product Innovation Department, Heidelberg Cement Group, Bergamo, Italy;1. Dep. of Structural Eng., Faculty of Civil Eng., Damascus University, Damascus, Syria;2. Dep. of Structural Eng., Faculty of Civil and Envir. Eng., Tarbiat Modares University, Tehran, Iran |
| |
Abstract: | This paper reports an experimental campaign on Reinforced Concrete (RC) Wide-Shallow Beams (WSBs) with or without fibres, tested under shear and flexure. A wide-shallow beam is a rather frequent structure in residential buildings in Southern Europe (as in Italy and in Spain). In order to study both the shear and flexural behaviour of WSBs and evaluate the possibility of substituting the minimum conventional transverse reinforcement required by Eurocode 2 with steel fibres, full-scale beams have been tested. Specimens, all 250 mm deep, had two different widths, fibre contents and also, minimum amount of classical shear reinforcement. Results evidenced that a relatively low volume fraction of fibres can significantly increase shear bearing capacity and beam ductility. Moreover, WSBs did not show the typical brittle failure in shear, even without any shear reinforcement, as the effect of fibres was more prominent than in deep beams. Peculiarities of WSBs were evidenced in terms of enhancements both in shear and in flexure. Experimental results have been evaluated in terms of strength, ductility, post-cracking stiffness, shear and flexural cracking, collapse mechanism and fibre effect. |
| |
Keywords: | A. Fibres B. Strength B. Fracture toughness D. Mechanical testing Wide-shallow beams |
本文献已被 ScienceDirect 等数据库收录! |
|