English abstract
This research aims to investigate the net cross-section capacity of bolted steel angles
under tension employing both experimental testing and numerical modeling,
specifically focusing on the double bolt rows arrangement, which is not currently
addressed in the Eurocode-3. The primary objective is to develop a reliable equation
for assessing the load carrying capacity of bolted connections in this configuration. To
achieve this objective, a series of experimental tests were conducted on bolted steel
angle specimens arranged in a single and double rows configuration. The experimental
data provides critical insights into the behavior and strength characteristics of such
connections under different bolt configurations. In parallel, a numerical model was
developed using a ductile damage material model to simulate the behavior of the bolted
steel angles. The numerical model is validated against the experimental results to
ensure its accuracy and effectiveness in representing real-world scenarios. The
validated numerical model was also used to compare the results against the provisions
outlined in the Eurocode and BS5950. Based on the combined findings from the
experimental and numerical investigations, a new set of equations are proposed to
predict the net cross-section capacity of bolted steel angles in the double bolt rows
arrangement. A comparison was made between numerical simulations (computerbased calculations) and experimental results (physical tests). The comparison revealed
that the numerical results and experimental results exhibited good agreement.
However, when these results were further compared to Eurocode-3 and BS5950, it was
discovered that both codes provision underestimated the capacities. The outcomes of
this study will significantly contribute to the field of structural engineering, addressing
the gap in Eurocode-3 provisions for the double rows of bolt arrangements. Ultimately,
this research aims to enhance the understanding of bolted connection behavior and promote safer and more reliable structural designs in the construction industry.
