Earthquake-resistant buildings with steel or composite columns: Comparative assessment using structural optimization

PAPAVASILEIOU, Georgios and CHARMPIS, Dimos C. (2020). Earthquake-resistant buildings with steel or composite columns: Comparative assessment using structural optimization. Journal of Building Engineering, 27: 100988.

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Abstract

This work investigates and compares the cost-effectiveness of seismically designed buildings having either pure steel or steel-concrete composite columns. In order to ensure an objective comparison of these two design approaches, the assessed building designs are obtained by a structural optimization procedure. Thus, any bias that would result from a particular designer's capabilities, experience, and subjectivity is avoided. Hence, a discrete Evolution Strategies optimization algorithm is employed to minimize the total cost of materials (steel and concrete) used in a structure subject to constraints associated with: (a) Eurocode 4 provisions for safety of composite column-members, (b) Eurocode 3 provisions for safety of structural steel members, and (c) seismic system behaviour and resistance. Extensive assessments and comparisons are performed for a variety of seismic intensities, for a number of building heights and plan configurations, etc. Results obtained by conducting 154 structural design optimization runs provide insight into potential advantages attained by partially substituting steel (as a main structural material) with concrete when designing the columns of earthquake-resistant buildings.

Item Type:	Article
Uncontrolled Keywords:	0905 Civil Engineering; 1201 Architecture; 1202 Building; 3302 Building; 4005 Civil engineering
Identification Number:	https://doi.org/10.1016/j.jobe.2019.100988
SWORD Depositor:	Symplectic Elements
Depositing User:	Symplectic Elements
Date Deposited:	26 Sep 2023 15:24
Last Modified:	11 Oct 2023 11:30
URI:	https://shura.shu.ac.uk/id/eprint/32223

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