Finite Element Modeling of Reinforced Concrete Corners Under Opening Bending Moment
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IGINAL CONTRIBUTION
Finite Element Modeling of Reinforced Concrete Corners Under Opening Bending Moment N. Bansal • N. Kwatra • V. S. Kanwar
Received: 21 September 2012 / Accepted: 7 October 2013 / Published online: 25 October 2013 Ó The Institution of Engineers (India) 2013
Abstract In the past few years, there has been growing use of finite element method for analysis of RCC structures to eliminate the expensive testing. However, validations of numerical models are instrumental towards making models reliable, which is, fundamental towards truly predictive prototyping. Keeping this in view, paper presents the results of numerical study of Reinforced Concrete Corners under opening moments using general-purpose finite element analysis software (ANSYS) and the comparison of results to the experimental results available in the literature [Singh and Kaushik, J Inst Eng (India), 84:201–209, 2003]. The Load deflection behaviour obtained is compared with the results corresponding to four different reinforcement detailing investigated experimentally [Singh and Kaushik, J Inst Eng (India), 84:201–209, 2003]. Details of the FE modeling of Reinforced Concrete Corners with four different reinforcement detailing have been presented. The best reinforcement detailing of Reinforced Concrete Corners on the basis of load deflection behaviour has been judged and advocated further on the basis of finite element analysis. The second phase of the study, investigates the effect of diameter of main steel, grade of concrete and
N. Bansal Civil Engineering Department, RIMT-IET, Mandi Gobindgarh 147301, India N. Kwatra Civil Engineering Department, Thapar University, Patiala 147001, India V. S. Kanwar (&) Civil Engineering Department, Chitkara University, Solan 174103, India e-mail: [email protected]; [email protected]
spacing of shear reinforcement on load deformation behavior of the corners under opening bending moments. Keywords Reinforced concrete corners Finite element analysis Shear reinforcement Opening bending moment
Introduction In the design of reinforced concrete structures, much of the attention is embarked towards calculation of the strength of basic structural elements like beams, columns and slabs. Comparatively lesser emphasis has been laid on the detailing, corresponding strength and behavior of corner joints, especially those subjected to opening moments as in the case of cantilever retaining walls, bridge abutments, channels, rectangular liquid retaining structures, beam column joints under earthquake loads. The detailing of reinforcement should be easier and simpler in order to expedite the construction process. At the same time structural member should satisfy the fundamental requirements of strength expressed in terms of controlled cracking and ductility. Investigators have experimentally established the load deflection behaviour of Reinforced Concrete Corners subjected to opening joints. The effect of different detailing systems has been investigated in laboratory but surprisingly, nu
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