The Dogbone Depth Effect of Castellated Beam on Ductility Behavior

Abstract

Experimental study of reduced beam section on castellated beam-column was conducted to analyze ductility behavior of castellated beams with "dogbone" as RBS. This study used two types of test beams to examine the effect of "dogbone" made of IWF steel beams 150 x 75 x 5 x 7 mm and then become castellated beam IWF 225 x 75 x 5 x 7 mm. The first sample was RBSC-1 with 150 mm as its width and the second sample was RBSC-2 with 100 mm as its width and the distance of each is 100 mm from the face of the column. Two LVDT100 ware placed 30cm from the top of the column to measure displacement that will be occurred. The test was carried out using cyclic load consisting of 8 cycles where each cycle consisted of 3 sub-cycles. Each cycle is given a displacement of 5mm, 10mm, 15mm, 20mm, 40mm, 60mm, 80mm, and 100mm with ram speeds of 0.1 mm / sec. The results showed the capacity of the RBSC-1 showed an average ductility value of 4,143 and RBSC-2 the average ductility value was 4,791 with a difference of 13,525%.