Strengthening and Rehabilitation of Buildings and Structures After the Impact of Seismic and Fire Hazards

Introduction of technology of Reliable provision of seismic and fire safety of buildings and structures is still one of the most important challenges in engineering, especially in seismic regions like Uzbekistan. Recent major earthquakes around the world show that even structures designed and built after improvements in earthquake resistant design were realised still have weaknesses, especially in slabs, ceilings and load bearing walls. This urges for the development of improved strengthening and rehabilitation approaches by accounting seismic and post event fire hazard at once.
This study addresses a major knowledge gap related to a poor  integration of regional seismic risk assessment, multi-hazard assessment for international purposes, and that of pragmatic mitigating approaches based on the technical state of real facilities. Current approaches focus on either retrofitting for seismic performance or establishing a rapid restoration pathway separately and are not framed in the context of rapid and staged strengthening after multi-hazard events.
This paper uses analytical review and comparative assessment of international and local practices, and evaluation of classification of the strengthening short term, temporary, capital and emergency strengthening. The review also goes on to discuss the contribution of passive and active systems of seismic protection (e.g., rubber metal damper devices) to the development of a resilient structure.
The results indicate that specific phased strengthening strategies, which use advanced vibrodynamic testing and modern instrumental methods, can help secure damage reduction, provide operational safety, and have quick recovery. Results highlight that reconstruction standards must be updated and harmonize with international standards to define the effects of seismic intensity and to bolster critical assets.
These implications justify the establishment national integrated programs for seismic risk mitigation and intensive monitoring, as well as strong seismic strengthening practices