Bambang Sabariman, Mochamad Firmansyah Sofianto
Beam-column joint (BCJ) of reinforced concrete is an area of critical which must be carefully designed to absorb the seismic energy. Inability to absorb seismic energy will cause serious damage to structural failure. It will lead to shear failure, i.e. brittle and endanger users of the building if the BCJ area is not designed properly. In order to get a building structure is safe and resistant to disasters, mainly due to the earthquake, the structure must be designed in accordance to the rules of standard construction (eligible detailing). In general, the anchorages (detailing) reinforcement beams to the column is pointing downwards, however, what if the steel anchoring beams are pointing upwards. Different anchoring will result in the behavior of different structures, such as fracturing pattern. This study observes two anchoring model, by making two test specimens of BCJ. One set of reinforcement beams anchored BCJ upward and downward respectively, which are applied with monotonic static load. The study investigated the pattern of cracks and ductility of the beam displacement on BCJ. The results showed that the downward anchoring in the fracturing pattern out of the area BCJ was anchoring upward pattern rift goes deep into the area BCJ, thus anchoring above makes BCJ unsafe. Downward anchoring are more ductile than the upward anchoring, however the deflection of all BJC specimens was higher than the boundaries maximum deflection prediction (Δprediction = 10.45?mm < eksp Δexp-min = 13.15?mm), which can be assumed that all BCJ specimens were ductile, but it still in ductile limited due to displacement ductility μΔ<3,5. © 2017 Author(s).
Universitas Negeri Surabaya, Jl. Ketintang Baru XII No.34, Ketintang, Gayungan, Kota SBY, Jawa Timur, 60231, Indonesia
