A simplified method for instability and second-order load effects of framed structures: Story-based approach


GÜNAYDIN A., Aydin R.

STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS, vol.28, no.13, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 13
  • Publication Date: 2019
  • Doi Number: 10.1002/tal.1655
  • Journal Name: STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: column effective length factor, P-Delta and P-delta effects, second-order analysis, story-based design, EFFECTIVE LENGTH, PRACTICAL METHOD
  • Eskisehir Osmangazi University Affiliated: Yes

Abstract

Several building codes such as ANSI/AISC 360-16 and EC3 EN 1993-1-1 require the use of a proper design method to consider instability and second-order load effect problems for individual system elements and the entire structural system. Various methods are available to assess stability. All of these methods should consider P-Delta and P-delta effects (second-order effects). The following calculation procedures are presented in this study: (a) a simplified method is developed for P-Delta and P-delta analysis in regular frames under the effect of constant axial loads to obtain story drifts and end moments; (b) this method can be applied to an entire building or any individual story, that is, story-based design is possible; and (c) column effective length factors are obtained for individual columns. In addition, design tables are presented.