Exploring the Improvement of Hidden Beams: Experimental and Numerical Perspectives on Welded Stirrups and Related Parameters

Document Type : Original Article

Authors

1 Department of Civil Engineering, Zagazig University of Engineering , Egypt

2 Professor Structural Eng. Dept., Faculty of Eng., Zagazig University, Zagazig, Egypt.

3 Civil Engineering Department, High Institute for Engineering and Technology at Al - Obour (K21 Cairo /Bilbies Road),Higher Education Ministry,Cairo,Egypt.

Abstract

Due to the weak inertia of the hidden beam in the direction of the load, it results in a large deflection. So, it led to study of how to enhance the performance of the hidden beams by making a parametric study. The core objective of this study is to investigate the intricate impact of welded stirrups on the structural behavior of wide shallow beams. The meticulous scrutiny extends to diverse factors including stirrups spacing, stirrups welding, stirrups diameter, and compression steel ratio. Experimental assessments coupled with numerical simulations underpin the study. The paper included a total of 10 specimens representing four different enhancement factors, three of them were tested experimentally and seven ANSYS models were designed for the parametric study. Among these, one specimen was both experimentally and numerically represented, for the verification. A verification analysis is performed on the default experimental specimen due to the intricacies of welding representation in numerical simulations. If experimental and numerical results align, a comprehensive comparison between tested and numerical specimens ensues, facilitating a holistic parametric study and outcome evaluation.

All tested beams share identical dimensions, featuring a clear span of 1800mm, a width of 500mm, and a thickness of 200mm. According to the experimental findings, utilizing welded stirrups for beams significantly improved shear strength. A comparison has been done between the results of the numerical investigation and the different international codes.

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The Egyptian International Journal of Engineering Sciences and Technology

Articles in Press, Accepted Manuscript
Available Online from 18 February 2024

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