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A 3D model for collapse analysis of soft-story light-frame wood buildings

  • Clemson University

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

34 Scopus citations

Abstract

This paper presents the development of a new three-dimensional (3D) numerical model, developed as part of the NEES-Soft project, which is capable of modelling the collapse mechanism of 3D light-frame wood buildings under earthquake motions. In the new 3D model, the in-plane and out-of-plane flexibilities of floor and roof diaphragms are characterized using two-node 12 degrees-of-freedom (DOF) frame elements with corotation formulation and the shear walls are modelled using two-node 6-DOF link elements. To reduce the computational overhead of the model, a novel condensation technique using shape functions is employed to condense the DOFs of the link elements. This 3D model has been used to perform incremental dynamic analyses (IDA) for a three-story building with tuck-under parking garage in the first floor. The IDA results revealed that the building is prone to side-sway collapse in the first-story.

Original languageEnglish
Title of host publicationWorld Conference on Timber Engineering 2012, WCTE 2012
Subtitle of host publicationStrength and Serviceability - Extreme Events
Pages113-120
Number of pages8
StatePublished - 2012
EventWorld Conference on Timber Engineering 2012: Strength and Serviceability - Extreme Events, WCTE 2012 - Auckland, New Zealand
Duration: Jul 15 2012Jul 19 2012

Publication series

NameWorld Conference on Timber Engineering 2012, WCTE 2012
Volume2

Conference

ConferenceWorld Conference on Timber Engineering 2012: Strength and Serviceability - Extreme Events, WCTE 2012
Country/TerritoryNew Zealand
CityAuckland
Period07/15/1207/19/12

Keywords

  • Collapse risk
  • Corotation
  • Geometric nonlinearity
  • Light-frame wood
  • Soft-story

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