Effect of external post-tensioning on steel–concrete composite beams with partial connection

El-Sisi, Alaa A, Hassanin, Ahmed I, Shabaan, Hesham F and Elsheikh, Ahmed I ORCID: 0000-0001-7456-1749 (2021) Effect of external post-tensioning on steel–concrete composite beams with partial connection. Engineering Structures, 247. p. 113130.

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Abstract

In this paper, an experimental and numerical study was presented for strengthened composite steel–concrete beams using externally post-tensioning tendons with a partial shear connection. Four composite steel–concrete beams under a static monotonic load were tested to validate the numerical model and investigate the different failure mechanisms. The cracking behaviors of the composite beams and overall moment of resistance have been experimentally and numerically studied. The validated numerical model was used to perform a parametric study. It was found that the initial tendon force increased by 18–23% due to the beam bending, which led to an enhancement in the performance of the beam. Moreover, increasing the degree of shear connection (DOSC) from 40% to 100% led to an increase in the mean maximum load by 46% and to decrease the mean maximum deflection by 22.5%. In addition, there was an improvement in the slippage by achieving 28% decrease. Also, there was a decrease in steel flange micro-strain by about 51%.

Item Type:	Article
Divisions:	Faculty of Science and Engineering > School of Engineering
Depositing User:	Symplectic Admin
Date Deposited:	02 Sep 2021 08:16
Last Modified:	18 Jan 2023 21:30
DOI:	10.1016/j.engstruct.2021.113130
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3135602