Nonlinear pushover analysis of infilled concrete frames
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Chao Hsun Huang (üSÕÑ„ì)1 Yungting Alex Tuan (¶ÎÓÀ¶¨)2 and
Ruo Yun Hsu (ÔSÈôÜ¿)3
1. Department of Civil Engineering, Taipei University of Technology, Chinese
Taipei
2. Department of Construction, Tamkang University, Chinese Taipei
3. Tien Shiang Structural and Civil Association, Chinese Taipei
Abstract:Six reinforced concrete frames with or
without masonry infills were constructed and tested under horizontal cyclic
loads. All six frames had identical details in which the transverse
reinforcement in columns was provided by rectangular hoops that did not meet
current ACI specifications for ductile frames. For comparison purposes, the
columns in three of these frames were jacketed by
carbon-fiber-reinforced-polymer (CFRP) sheets to avoid possible shear failure. A
nonlinear pushover analysis, in which the force-deformation relationships of
individual elements were developed based on ACI 318, FEMA 356, and Chen¡¯s model,
was carried out for these frames and compared to test results. Both the failure
mechanisms and impact of infills on the behaviors of these frames were examined
in the study. Conclusions from the present analysis provide structural engineers
with valuable information for evaluation and design of infilled concrete frame
building structures.
Keywords:
pushover analysis; FEMA 356; infilled
concrete frames; infill masonry panels; fiber-reinforced-polymer
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