Seismic Fragility Assessment of Columns in a Piloti-Type Building Retrofitted with Additional Shear Walls

Hoang Dang-Vu, Jiuk Shin and Kihak Lee
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Hoang Dang-Vu: Department of Architectural Engineering, Sejong University, Seoul 05006, Korea
Jiuk Shin: Department of Smart Construction, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang-si 10223, Korea
Kihak Lee: Department of Architectural Engineering, Sejong University, Seoul 05006, Korea

Sustainability, 2020, vol. 12, issue 16, 1-19

Abstract: This study evaluated the influence of additional shear walls, constructed on the first floor, as strengthening methods for a piloti-type building subjected to earthquake loadings. Piloti-type buildings are commonly designed as urban structures in many cities of South Korea. The existence of just columns on the first floor of the building is a feature that is advantageous from an architectural viewpoint, and yet has potential structural disadvantages. Such columns usually exhibit shear–axial failure, due to inherent vertical and horizontal irregularities and insufficient seismic reinforcements. Among several retrofitting methods, including additional braces, carbon fiber reinforced polymers, dampers, and so forth, this research considered reinforced concrete shear walls to improve the seismic responses of piloti buildings. A parametric analysis of the location of the retrofitted shear walls in a typical piloti building was implemented using the Zeus-NL program. Nonlinear time history analysis and incremental dynamic analysis were performed to comparatively evaluate the structure’s seismic responses and fragility curves before and after retrofit.

Keywords: seismic evaluation; piloti-type building; shear wall; fragility assessment (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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