IIT Delhi develops low-cost arches to enhance earthquake resistance of constructed structures

Researchers at the Indian Institute of Technology (IIT), Delhi, have developed low-cost, highly flexible and torsion-constrained trusses to enhance the earthquake resistance of built structures.

According to officials, the clamps, for which a patent has also been applied, have many advantages, such as all-steel components, on-site manufacturing and assembly process, post-earthquake inspection and easy replacement.

The earthquake resistance of civil structures is often improved by using seismic force resistance systems or vibration control devices. Restrictive arches, they said, are special structural elements that serve both purposes.

Boundary bracing (BRB) is a structural bracing in a building, designed to allow the building to withstand periodic lateral loads, usually earthquake loading.

”The proposed technology is effective in new construction and has great potential for upgrading and retrofitting of earthquake-deficient reinforced concrete and steel-framed structures, such as residential, office, hospital, and school buildings. ‘This technology is patented,’ said Deepti Ranjan Sahu, a professor at IIT in the Department of Civil Engineering in Delhi.

”These brackets can also be easily used in steel and concrete bridges to enhance their earthquake resistance. Implementing this technology in existing structures reduces the overall retrofit cost and reduces intervention and downtime. It is possible to design a chassis to meet desired performance goals in terms of strength and serviceability using Hybrid Buckle Braces.

Saho explained that the researchers have made new hybrid torsion-bound braces (HBRBs) that have higher strength, excellent ductility, and better power dissipation.

The researchers fabricated the brackets and studied the seismic performance of more than a dozen HBRBs on a large scale at IIT’s Heavy Structures Laboratory Comprehensive Test Facility at IIT Delhi. Tests are performed on samples with improvements and modifications in the laboratory’.

(This story has not been edited by the Devdiscourse staff and is automatically generated from a shared feed.)

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