EVALUATION OF REDUCED BEAM SECTION (RBS) ON CASTELLATED BEAM SUBJECTED TO SEISMIC LOADING Nini Hasriyani Aswad(a*)Herman Parung (b) Rita Irmawaty(b)and A.Arwin Amiruddin (b)
(a) Department of Civil Engineering, Universitas Halu Oleo. Jl. H.E.A Mokodompit, Anduonohu South East Sulawesi.
* nini.aswad[at]gmail.com
(b) Department of Civil Engineering, Universitas Hasanudin. Jl. Poros malino km.6. Kampus Teknik Gowa, South Sulawesi.
Abstract
The performance of a beam subjected to seismic loading was evaluated in this experimental study on a castellated beam using RBS (reduced beam section) as the damping factor in earthquake-resistant structures. The study used two specimens, one castellated beam with RBS and one without RBS. The specimens were tested in an exterior connection structure model subjected to cyclic loading gradually until collapse. The experiment using cyclic loading was used to evaluate the deformation and the acting force influenced by RBS placement on the column face. The RBS placement on the column face shows that failure occurred on the beam due to elastic deformation. The specimen with RBS had load melting point of 8 kN on 1.05 % drift ratio, 9 kN load on 2.1% drift, 12 kN peak load on 3.20% drift, and load necking phase of 10.53 kN on 4.17% drift. Meanwhile, the specimen without RBS had load melting point of 9 kN on 1.1% drift ratio, 9 kN load on 2.13% drift, the peak load of 12.5 kN on 3.20% drift ratio, and load necking phase of 11 kN on 4.4% drift ratio
