Seismic Performance Evaluation of Steel frame buildings (A case study on existing Smart Parking System in Addis Ababa City)
No Thumbnail Available
Date
2019-07
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
Earthquake hazards have an effect on significant damage to structures and cause widespread failure
throughout buildings. Therefore, the assessment of the structural behavior against possible
earthquakes should be the fundamental point on the design and construction process.
The seismic response and/or a performance prediction of buildings assessed based on nonlinear
static analysis as it consumes less time to analysis and provides nearly equally reliable results with
nonlinear dynamic analysis.
Currently, in this research, the methodology is extended to assess the performance of 3D structural
steel frames using a G+10 and G+15 Smart Parking Systems as a case study which are located in
Addis Ababa city. Imperative issues regarding direction of load application, loading profile,
diaphragm effects, beam to column joint model and arrangement of incremental static analysis
results to generate required data for performance based evaluations have been studied.
The result of this research shows that; the curve line for capacity curve (push over curve) of both
case study buildings due to applying uniform lateral load distribution is above the capacity curve of
triangular lateral load distribution. To this end, Conventional pushover analysis with triangular load
pattern distribution gives higher displacement while the uniform lateral load pattern gives higher
base shear. The Inter-Storey drift ratio of both the case study buildings is a maximum on the lower
storey of the buildings. Hence, it concluded that failure of buildings due earthquake starts on the
lower storey part of the buildings.
Description
Keywords
Seismic analysis, Response spectrum analysis, Elastic analysis, Pushover analysis, Steel frame, Capacity curve, Peak Ground Acceleration