Document Type : Structural Earthquake Engineering
Tarbiat Modares University
Steel coupling beams are increasingly used in coupled wall systems in medium to high rise buildings for high seismic prone areas. Recent investigations focused on interactions between steel coupling beams and reinforced concrete wall in connection region. However, due to lack of data, effect of studs practically utilized in connection zone is not fully understood. Therefore, the major variable in the experimental test includes studs on beam flanges. On the other hand, the test complemented on specimen only considered one half of steel coupling beam and an individual wall, which is different from actual conditions of coupled walls. To address the gap in the previous study, the effects of this difference and concentrated transverse reinforcement around the connection zone investigated through finite element modeling. Results showed that the application of studs could decrease the required embedment length in wall face if reinforcement around the embedded beam were properly placed. The findings proved that tests half assembly of coupled walls in comparison with total assembly have considerably underestimate results.