Optimization methodology for cross-section size in momentresisting frame design

J. Xu, X. Lu, B. Spencer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study proposes a systematic sizing methodology for optimizing cross-section of ductile moment-resisting frames subjected to stochastic seismic excitation. The procedure consists of two major steps. In step 1, to minimize the material use, the moment of inertia (MOI) of each frame member is optimized with design criteria fulfilled. In step 2, based on the optimized MOI, cross-sections are determined from standard shape database to minimize material use of each column with sufficient MOI. Compared with selecting cross-sections directly from database, the proposed procedure converts the time consuming discrete optimization to relatively uncomplicated continuum optimization to be applicable. An example is conducted to illustrate the optimization procedure and demonstrate its efficacy. Optimized W-shape cross-section of frame columns are designed based on the American institute of steel construction (AISC) shape database. The optimization results show that the total material use is reduced with structural responses improved.

Original languageEnglish (US)
Title of host publicationStructures and Architecture - Proceedings of the 3rd International Conference on Structures and Architecture, ICSA 2016
EditorsPaulo J.S. Cruz
PublisherCRC Press/Balkema
Pages1037-1044
Number of pages8
ISBN (Print)9781138026513
DOIs
StatePublished - Jan 1 2016
Event3rd International Conference on Structures and Architecture, ICSA 2016 - Guimaraes, Portugal
Duration: Jul 27 2016Jul 29 2016

Publication series

NameStructures and Architecture - Proceedings of the 3rd International Conference on Structures and Architecture, ICSA 2016

Other

Other3rd International Conference on Structures and Architecture, ICSA 2016
CountryPortugal
CityGuimaraes
Period7/27/167/29/16

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture

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  • Cite this

    Xu, J., Lu, X., & Spencer, B. (2016). Optimization methodology for cross-section size in momentresisting frame design. In P. J. S. Cruz (Ed.), Structures and Architecture - Proceedings of the 3rd International Conference on Structures and Architecture, ICSA 2016 (pp. 1037-1044). (Structures and Architecture - Proceedings of the 3rd International Conference on Structures and Architecture, ICSA 2016). CRC Press/Balkema. https://doi.org/10.1201/b20891-144