Nonlinear modeling of the post peak degradation of nonstructural components in light frame structural systems

H. Heredia, C. B. Chadwell

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

Abstract

The research presented herein describes the findings and conclusions thus far in an experimental and analytical study of the behavior of woodframe shear walls sheathed with OSB combined with drywall and/or stucco subjected to cyclic loading. Eight, 8 ft square shear wall specimens were constructed and tested using the CUREE-Caltech pseudo-static loading protocol. A total of four different configurations were investigated to quantify the performance characteristics of conventional woodframe shear walls sheathed with OSB finished with either drywall and/or stucco. Currently, ASCE 41 provisions suggest no increase in capacity, nor difference in acceptance criteria for plywood sheathed walls clad with non-structural finishes (drywall and/or stucco) citing that stucco/drywall are brittle and fail at low levels of seismicity. However, data collected from research conducted as part of an ongoing study show that there are large differences in the backbone curves. Furthermore, using the Type 1 curve (as put forth by FEMA 356/ASCE 41) for establishing the acceptance criteria of ductile subassemblies may not be a good match for the recorded data from wood sheathed walls (both with/without cladding of drywall/stucco). Lastly, when a Type 1 component behavior is fit to test data consistent with the ASCE 41 Alternative Modeling Parameters and Acceptance Criterion, the suggested Life Safety and Collapse Prevention acceptance criteria vary greatly for each of the four configurations tested.

Original languageEnglish (US)
Title of host publicationProceedings of the 19th Analysis and Computation Specialty Conference
Pages48-57
Number of pages10
DOIs
StatePublished - 2010
Externally publishedYes
Event19th Analysis and Computation Specialty Conference - Orlando, FL, United States
Duration: May 12 2010May 15 2010

Publication series

NameProceedings of the 19th Analysis and Computation Specialty Conference

Conference

Conference19th Analysis and Computation Specialty Conference
Country/TerritoryUnited States
CityOrlando, FL
Period5/12/105/15/10

Keywords

  • Degradation
  • Earthquakes
  • Frames
  • Nonstructural elements
  • Structural systems

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Safety, Risk, Reliability and Quality
  • Building and Construction

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