Strength of eccentrically loaded slender columns made with high-strength concrete

Shaaban, Ibrahim, Abdel-Rahman, Gamal T., Said, Mohamed, Abdel-Karim, Mahmoud and Adesina, Peter (2019) Strength of eccentrically loaded slender columns made with high-strength concrete. Proceedings of the ICE - Structures and Buildings. ISSN 0965-0911

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Abstract

A non-linear finite-element analysis model was developed to predict the strength analysis of high- strength-concrete slender columns. The studied parameters were compressive strength, load eccentricity, slenderness ratio, longitudinal and transverse reinforcement ratio. The model results were verified by comparison with analytical results and experimental results in literature. A parametric study was also carried out by comparing the model results with those obtained using design codes, which were predominantly based on data derived from tests on normal-strength concrete. The model proved to be a suitable tool for the strength analysis of slender high-strength-concrete columns. ACI-318-14 gave the most conservative predictions of the load-carrying capacity of centrally loaded columns but was close to the model results for eccentric loading. The procedures specified by BS EN 1992-1-1:2004 Eurocode 2 resulted in a significant under-estimation of the load-carrying capacity of slender columns, particularly for eccentric loading, and this increases with greater slenderness ratios. This is probably because the confinement index taken into consideration in the software was not consistent, ranging from 0.03% to 5.14%. It was concluded that special clauses need to be introduced in design codes for the accurate design of high-strength-concrete columns.

Item Type: Article
Uncontrolled Keywords: Civil and Structural Engineering, Building and Construction
Subjects: Construction and engineering > Civil and structural engineering
Construction and engineering
Related URLs:
Depositing User: Kevin Sanders
Date Deposited: 18 Sep 2019 07:19
Last Modified: 05 Dec 2019 16:07
URI: http://repository.uwl.ac.uk/id/eprint/6387

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