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Comparative Study | Structural Engineering | Volume 15 Issue 6, June 2026 | Pages: 1225 - 1229 | India
Analysis of Double-Beam Coupling Beam Behavior Over Diagonally Reinforced Coupling Beam Using Dynamic Analysis
Abstract: Dynamic analysis of high-rise structures using Double-Beam Coupling Beams (DBCB) as a replacement for traditional Diagonally Reinforced Coupling Beams (DCB). Modeling was done using ETABS software for seismic and wind effect as per Indian Standard Code. The investigation focuses span by depth ratio of beams, where conventional diagonal reinforcement typically leads to severe congestion and reduced efficiency. Results from the dynamic analysis indicate that the DBCB configuration significantly reduces earthquake-induced internal forces within the coupling members compared to the conventional beam with diagonal reinforcement. Remarkably, this reduction in localized force demand is achieved without altering critical global dynamic parameters, including the fundamental time period, modal mass participation, and total story shear. The structural advantage of the DBCB stems from its unique unreinforced concrete strip (UCS), which allows the beam to transition from a shear-dominated monolithic state to a flexure-dominated slender-beam state upon the initiation of controlled cracking. This mechanism not only enhances ductility and energy dissipation capacity but also maintains the elastic stiffness required for wind serviceability. Furthermore, the DBCB provides significant practical benefits, including simplified reinforcement detailing and the capacity to accommodate utility penetrations through the UCS without compromising structural integrity. These findings validate the DBCB as a superior structural solution for tall buildings in high-seismic and wind-prone environments, offering a robust balance between seismic resilience, aerodynamic stability, and constructability.
Keywords: Double-Beam Coupling Beam, Diagonally Reinforced Coupling Beam, Dynamic Analysis, Site Feasibility, Sway
How to Cite?: Akash Ghuge, Sangketa Sangma, "Analysis of Double-Beam Coupling Beam Behavior Over Diagonally Reinforced Coupling Beam Using Dynamic Analysis", Volume 15 Issue 6, June 2026, International Journal of Science and Research (IJSR), Pages: 1225-1229, https://www.ijsr.net/getabstract.php?paperid=SR26622220853, DOI: https://dx.doi.org/10.21275/SR26622220853