Displacement based seismic design of asymmetric plan rc wall structures: Modal approach

Philip Wilkinson, Oren Lavan, Avigdor Rutenberg

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The development of practical seismic engineering procedures which produce economical designs for asymmetrie plan R.C. wall structures is intended to help mitigate earthquake hazards. Earthquake related building damage corresponds more directly to deformations than to forces. Hence, for asymmetrie structures which exhibit highly nonlinear behaviour, a displacement-based design approach appears likely to produce safer and more economical designs than traditional linear force-based design methods. There are many analysis methods available for response prediction of designed buildings. However, most existing seismic design methods are either iterative at the multi-degree of freedom (MDF) structure level or consider an 'equivalent' single mode only and rely on empirical factors to account for torsional and higher mode effects. This paper presents two displacement-based seismic design methods referred to collectively as 'Modal Displacement Based Design' (MDBD) for single story asymmetrie plan RC wall structures which consider torsional and higher mode effects explicitly. The first method, called 'Modal Pushover Design' (MPD), is iterative at the single-degree of freedom (SOF) level and achieves performance targets exactly when verified by Modal Pushover Analysis (MPA). The second, called 'Direct Modal Pushover Design' (DMPD), is non-iterative. DMPD defines yield and design displacement profiles based on initial elastic and secant (to estimated peak ductility) element stiffness respectively.

Original languageEnglish
Title of host publicationfib Symposium TEL-AVIV 2013
Subtitle of host publicationEngineering a Concrete Future: Technology, Modeling and Construction, Proceedings
EditorsAvraham N. Dancygier
Pages577-580
Number of pages4
ISBN (Electronic)9789659203901
StatePublished - 2013
Eventfib Symposium TEL-AVIV 2013 - Tel-Aviv, Israel
Duration: 22 Apr 201324 Apr 2013

Publication series

Namefib Symposium TEL-AVIV 2013: Engineering a Concrete Future: Technology, Modeling and Construction, Proceedings

Conference

Conferencefib Symposium TEL-AVIV 2013
Country/TerritoryIsrael
CityTel-Aviv
Period22/04/1324/04/13

Keywords

  • Asymmetrie-plan wall structures
  • Modal displacement-based seismic design

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Civil and Structural Engineering
  • Architecture

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