Reinforcement of Steel Tubes with Rings under Compression

The goal of this study is to reinforce the compression strut ties of space truss systems by increasing the load carrying capacities of them. Therefore, 28 steel bar ties each having 900 mm length and 60.3 mm diameter were reinforced in six different ways and subjected to an axial compression test in the Structure Laboratory of the Civil Engineering department, Faculty of Engineering and Architecture, Selçuk University, Konya, Turkey. The results obtained from tests were examined by making comparisons between the plotted graphics. The applied reinforcement has not increased the buckling load, but it has increased the energy absorption capacity of reinforced bars under yielding and maximum stresses. When the negative effect due to welding is eliminated, a further increase in the energy absorption capacity at the yielding and proportionality limits and an increase in the maximum load carrying capacity can be expected.