• Gajanan B. Suryawanshi

In the last two decades, several seismic retrofitting techniques for steel structures have been developed and practiced, but rarely validated with experiments and modeling. This research aims to develop a new and high-strength seismic retrofitting technique for steel structures. An innovative retrofitting technique with a cable system. Experimental results of steel frame structure retrofitted with cable system and cable system with square plate at the center are presented. The results showed that both the strength, stiffness, and ductility of tested specimens were significantly enhanced with this new technique. The large displacements and lack of sufficient lateral stiffness are the main problems of moment-resisting frames. The purpose of this study is to demonstrate the efficiency of the system, in which all cables have tensile forces under the seismic load and cables are not slackened. The behavior under different frequencies was investigated on ABAQUS software. Adding X- bracings & a steel plate in the center of bracings causes all cables to involve against the seismic load and all cables remain in tension Therefore, improves the performance of the structure against the applied seismic load.

ABAQUS software, seismic retrofitting, steel plate in the center of bracings, stiffness of the frames, X- Bracings.

" SEISMIC RETROFITTING IN STEEL FRAME STRUCTURES BY DIFFERENT CABLE ROPE BRACING SYSTEMS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 6, page no.c212-c216, June-2022, Available :http://www.jetir.org/papers/JETIR2206227.pdf

" SEISMIC RETROFITTING IN STEEL FRAME STRUCTURES BY DIFFERENT CABLE ROPE BRACING SYSTEMS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 6, page no. ppc212-c216, June-2022, Available at : http://www.jetir.org/papers/JETIR2206227.pdf