2018_EJRNL_PP_ANAS_SALEM_ISSA_1.pdf
Terbatas Perpustakaan Prodi Arsitektur
» ITB
Terbatas Perpustakaan Prodi Arsitektur
» ITB
Concentric braced frames (CBFs) are commonly used all over the world to resist seismic forces in buildings. Buckling, however, is
a major concern for CBFs, in which they lose their strength and stiffness when subjected to load reversals during earthquakes. To tackle this
problem, a novel easy-to-fabricate low-cost spring-based piston bracing (SBPB) system is developed with single and double friction spring
configurations. In this system, a brace member is able to carry a large magnitude of tension and compression forces using a special spring in
the piston cylinder. Stable and self-centering hysteresis behavior is achieved when the system is subjected to qualifying quasi-static loading.
The strain rate effect is assessed and comparable results are achieved without any performance degradation. Numerical simulation shows
excellent matching with the test results. Two 4-story braced steel buildings are designed utilizing buckling-restrained braces (BRBs) and
SBPB, and their performances are compared in terms of interstory drift and residual drift. The proposed system experiences zero residual
deformations but relatively larger drift values when compared with BRBs.