Research Projects

Supplemental energy dissipation devices are crucial for enhancing the resilience of existing and new structures in regions prone to earthquakes. Various researchers have studied many energy dissipation devices in the past. Conventional metallic-yielding dampers often involve high costs and a complex installation process. Moreover, many of these metallic-yielding devices have shown specific ductility issues and early failure due to welding-induced heat stresses. This research proposal aims to develop an innovative, low-cost, aluminum core Buckling Restrained Brace (Al-BRB) system for the sustainable retrofitting of frame structures. The study will involve developing an innovative BRB system that relies on the aluminum core for energy dissipation and permanent reusable steel restrainers. Aluminum core is lightweight, corrosion resistant, and has high ductility, and thus suitable for such applications. Permanent reusable steel restrainers make it a cost-effective solution as only the core energy dissipator will require replacement after a seismic event. The proposed BRB system will be developed, considering the practical issues to make it adopted in the field. For ease of construction, bolted connections will be used to assemble various components of the Al-BRB. This will also make inspections of the structures easy during their operational life. The developed Al-BRBs will be experimentally evaluated for their hysteretic behavior, fatigue behavior, and energy dissipation characteristics. Specimens will be fabricated in the laboratory at IIT Jammu. Existing equipment will be used for testing in addition to the data acquisition system planned through this research proposal. Seismically resilient structures are fundamental to sustainable development and urban planning, directly addressing challenges posed by rapid urbanization. As the research is experimental and easy to implement in the field, it has the potential to align with the priorities set by the government of India, like sustainable development goals (SDG Goal 9: Build resilient infrastructure, promote inclusive and sustainable industrialization, and foster innovation).