Performance-based design has gained interest in recent years among
structural designers and researchers. Performance-based design includes selection
of appropriate building sites, structural systems and configurations, as well as
analytical procedures used in the design process, to confirm that the structure has
adequate strength, stiffness and energy dissipation capacity to respond to the
design loads without exceeding permissible damage states. Although performance-based
seismic design has advanced for some materials and structural types, such as
steel and reinforced concrete buildings and bridges, its application to light-frame
structures remains largely unexplored.
The objective of this research was to explore the potential for the
application of performance-based engineering concepts to the design and
assessment of woodframe structures subject to earthquakes. Nonlinear dynamic
time-history analysis was used to predict the performance of shearwalls
considering a suite of scaled characteristic ordinary ground motions to represent
the seismic hazard. Sensitivity studies were performed to investigate the relative
effects of damping, sheathing properties, fastener type and spacing, panel layout,
and other properties on the performance of wood shearwalls. In addition, the
effects of uncertainty in ground motions and variability in sheathing-to-framing
connection hysteretic parameters were investigated. Issues such as the contribution
of nonstructural finish materials, different seismic hazard regions, and construction
quality also were investigated and modification factors to adjust peak displacement
distributions were developed. The peak displacement distributions were then used
to construct performance curves and design charts as a function of seismic weights
for two baseline walls. Finally, fragility curves were developed for the baseline
walls considering different nailing schedules, corresponding allowable seismic
weights, and various overstrength (R) factors. / Graduation date: 2004
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/30436 |
| Date | 22 December 2003 |
| Creators | Kim, Jun Hee |
| Contributors | Rosowsky, David V. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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