Seismic design optimization of multi-storey steel-concrete composite buildings

Georgios S. Papavasileiou; Dimos C. Charmpis

doi:10.1016/j.compstruc.2016.03.010

Seismic design optimization of multi-storey steel-concrete composite buildings

Georgios S. Papavasileiou, Dimos C. Charmpis^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

This work presents a structural optimization framework for the seismic design of multi–storey composite buildings, which have steel HEB-columns fully encased in concrete, steel IPE-beams and steel L-bracings. The objective function minimized is the total cost of materials (steel, concrete) used in the structure. Based on Eurocodes 3 and 4, capacity checks are specified for individual members. Seismic system behavior is controlled through lateral deflection and fundamental period constraints, which are evaluated using nonlinear pushover and eigenvalue analyses. The optimization problem is solved with a discrete Evolution Strategies algorithm, which delivers cost-effective solutions and reveals attributes of optimal structural designs.

Original language	English
Pages (from-to)	49-61
Number of pages	13
Journal	Computers and Structures
Volume	170
Early online date	18 Apr 2016
DOIs	https://doi.org/10.1016/j.compstruc.2016.03.010
Publication status	Published - 1 Jul 2016
Externally published	Yes

Keywords

structural optimization
discrete optimization
evolution strategies
earthquake-resistant
pushover analysis
frequency constraints

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10.1016/j.compstruc.2016.03.010

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title = "Seismic design optimization of multi-storey steel-concrete composite buildings",

abstract = "This work presents a structural optimization framework for the seismic design of multi–storey composite buildings, which have steel HEB-columns fully encased in concrete, steel IPE-beams and steel L-bracings. The objective function minimized is the total cost of materials (steel, concrete) used in the structure. Based on Eurocodes 3 and 4, capacity checks are specified for individual members. Seismic system behavior is controlled through lateral deflection and fundamental period constraints, which are evaluated using nonlinear pushover and eigenvalue analyses. The optimization problem is solved with a discrete Evolution Strategies algorithm, which delivers cost-effective solutions and reveals attributes of optimal structural designs.",

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N2 - This work presents a structural optimization framework for the seismic design of multi–storey composite buildings, which have steel HEB-columns fully encased in concrete, steel IPE-beams and steel L-bracings. The objective function minimized is the total cost of materials (steel, concrete) used in the structure. Based on Eurocodes 3 and 4, capacity checks are specified for individual members. Seismic system behavior is controlled through lateral deflection and fundamental period constraints, which are evaluated using nonlinear pushover and eigenvalue analyses. The optimization problem is solved with a discrete Evolution Strategies algorithm, which delivers cost-effective solutions and reveals attributes of optimal structural designs.

AB - This work presents a structural optimization framework for the seismic design of multi–storey composite buildings, which have steel HEB-columns fully encased in concrete, steel IPE-beams and steel L-bracings. The objective function minimized is the total cost of materials (steel, concrete) used in the structure. Based on Eurocodes 3 and 4, capacity checks are specified for individual members. Seismic system behavior is controlled through lateral deflection and fundamental period constraints, which are evaluated using nonlinear pushover and eigenvalue analyses. The optimization problem is solved with a discrete Evolution Strategies algorithm, which delivers cost-effective solutions and reveals attributes of optimal structural designs.

KW - structural optimization

KW - discrete optimization

KW - evolution strategies

KW - earthquake-resistant

KW - pushover analysis

KW - frequency constraints

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JO - Computers and Structures

JF - Computers and Structures

ER -

Seismic design optimization of multi-storey steel-concrete composite buildings

Abstract

Keywords

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