Abstract:
Rapid urban population growth and land scarcity have significantly impacted the
construction of high-rise buildings. Different structural systems can be adopted for
high-rise buildings. Different codes recommend dynamic analysis like response
spectrum analysis and Time history analysis (THA) for high-rise buildings based on
height limits. The choice of structural system and method of structural analysis can be
crucial in terms of safety, economy, and usable space area. In this research, two types
of building framing systems, the frame shear wall system (FSWS) and the moment
resisting frame system (MRFS), are analysed by linear time history approach applying
scaled ground motion time histories for a typical site class following the Bangladesh
National Building Code (BNBC). These two buildings have the same aspect ratio of
1.44, slenderness ratio of 5.77, plan area of 3900 ft2, and height of 300 ft, with different
member sections. The column steel percentage for MRFS is 1.2% and FSWS is 1.0%.
The two building framing systems are compared through building responses such as
story deflection and story drift, which were evaluated in both X and Y directions for
scaled ground motion pairs. The research results show that story deflection and story
drift for the two framing systems varied for different time history load cases. On the
other hand, the usable floor area and concrete volume varied significantly in the two
framing systems.
