Application of modified d-value method considering plastic strain hardening effect to prediction of structural mechanics of steel moment resisting frames with new column support system

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

Abstract

Kimura et al. [2, 3] has proposed the concept to realize beam yielding mechanism of a steel moment-resisting frame by applying a mid-story pin column base system. Controlling moment distribution, the system reliably prevents yielding of the first story columns. As design procedure to predict their elasto-plastic behavior, modified D-value method has been proposed. Previous papers [1] examined flexural strength of columns to keep them in elastic when frames were modeled as those having perfect elasto-plastic beams. In reality, however, bending moment keeps increasing due to strain hardening after beams yield. In this paper, the authors develop the modified D-value method to consider strain hardening effect. Using a proposed method, required flexural strength of columns is clarified to avoid them from yielding up to when the frame forms beam yielding mechanism. The results of the modified D-value method sufficiently agree with those of static analysis of low-to-mid-rise steel moment resisting frame. It is clarified that the story drift is reduced for larger strain hardening gradient, and that the maximum bending moment of the column does not change significantly, compared with those of perfect elasto-plastic frame.

Original languageEnglish
Title of host publicationICSCEA 2019 - Proceedings of the International Conference on Sustainable Civil Engineering and Architecture
EditorsJ.N. Reddy, Chien Ming Wang, Van Hai Luong, Anh Tuan Le
PublisherSpringer
Pages231-239
Number of pages9
ISBN (Print)9789811551437
DOIs
Publication statusPublished - 2020
EventInternational Conference on Sustainable Civil Engineering and Architecture, ICSCEA 2019 - Ho Chi Minh City, Viet Nam
Duration: 2019 Oct 242019 Oct 26

Publication series

NameLecture Notes in Civil Engineering
Volume80
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

ConferenceInternational Conference on Sustainable Civil Engineering and Architecture, ICSCEA 2019
CountryViet Nam
CityHo Chi Minh City
Period19/10/2419/10/26

Keywords

  • D-value method
  • Static analysis
  • Steel moment-resisting frames
  • Strain hardening

ASJC Scopus subject areas

  • Civil and Structural Engineering

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