PC panel strengthening technique was developed in M.E.T.U. Structural Mechanics
Laboratory in order to respond the need of practical and efficient pre-quake seismic
strengthening procedures applicable to RC framed structures. The idea behind the
method is simply to convert the non-structural infills into load bearing structural
elements by gluing PC panels over the existing infill wall surface. The remarkable
advantages of the procedure is not only the considerable amount of seismic
performance improvement but also the simplicity of application, very low levels of
disturbance to the occupants and most importantly, the applicability during service.
A number of PC panel application parameters were experimentally investigated by
previous researchers. The success of PC panel method on seismic performance
improvement of RC frames with different aspect ratios was experimentally investigated
in the present study. Total of fifteen, 1:3 scaled, one-bay, two-storey RC frames were
tested in three various aspect ratio series. Constant axial load was applied to the
columns and reversed cyclic load was applied in the lateral direction. Hollow brick
v
infilled frame and cast-in-place RC infilled frame were the lower and upper bound
reference specimens, respectively.
Seismic performance indicators such as response envelope curves, lateral load carrying
capacities, cumulative energy dissipations, initial stiffness indicators and ductility
values clearly showed the effectiveness of PC panel application over different geometry
of RC frames of concern. Moreover, PC panel application either with rectangular or
with strip shaped PC panels provided seismic performance improvement to be almost
equal to that of cast-in-place RC infill application for all series.
Equivalent diagonal strut concept was followed in analytical studies to simulate the
infills of RC frame openings. The required strut material properties were estimated
from total of eighteen individual wall panel tests. The bond-slip effect, due to
utilization low strength of concrete and plain rebars, was also investigated and
introduced to the analytical frame models. Non-linear push over analysis was
performed for all specimens in OpenSees computer software. The analytical results
were compared with that of experimental response envelopes.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12613567/index.pdf |
| Date | 01 August 2011 |
| Creators | Okuyucu, Dilek |
| Contributors | Tankut, Tugrul |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | Ph.D. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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