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Smart Structures and Systems
  Volume 14, Number 5, November 2014 , pages 785-809
DOI: https://doi.org/10.12989/.2014.14.5.785
 


An evolutionary fuzzy modelling approach and comparison of different methods for shear strength prediction of high-strength concrete beams without stirrups
Mohammad Mohammadhassani, Hossein Nezamabadi-pour, Meldi Suhatril and Mahdi shariati

 
Abstract
    In this paper, an Adaptive nerou-based inference system (ANFIS) is being used for the prediction of shear strength of high strength concrete (HSC) beams without stirrups. The input parameters comprise of tensile reinforcement ratio, concrete compressive strength and shear span to depth ratio. Additionally, 122 experimental datasets were extracted from the literature review on the HSC beams with some comparable cross sectional dimensions and loading conditions. A comparative analysis has been carried out on the predicted shear strength of HSC beams without stirrups via the ANFIS method with those from the CEB-FIP Model Code (1990), AASHTO LRFD 1994 and CSA A23.3 – 94 codes of design. The shear strength prediction with ANFIS is discovered to be superior to CEB-FIP Model Code (1990), AASHTO LRFD 1994 and CSA A23.3 – 94. The predictions obtained from the ANFIS are harmonious with the test results not accounting for the shear span to depth ratio, tensile reinforcement ratio and concrete compressive strength; the data of the average, variance, correlation coefficient and coefficient of variation (CV) of the ratio between the shear strength predicted using the ANFIS method and the real shear strength are 0.995, 0.014, 0.969 and 11.97%, respectively. Taking a look at the CV index, the shear strength prediction shows better in nonlinear iterations such as the ANFIS for shear strength prediction of HSC beams without stirrups.
 
Key Words
    ANFIS; shear strength; HSC beams; tensile reinforcement ratio; shear span to depth ratio; concrete compressive strength
 
Address
Mohammad Mohammadhassani:Department of Structural Engineering, University of Malaya, Malaysia
Hossein Nezamabadi-pour:Department of Electrical Engineering, Shahid Bahonar University of Kerman, Iran
Meldi Suhatril:Department of Civil Engineering, University of Malaya, Malaysia
Mahdi shariati: Department of Structural Engineering, University of Malaya, Malaysia
 

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