Analysis of Strengthened Industrial Structure under Seismic Loading
Keywords:Bracings, Dynamic Loads, Industrial Structures, STAAD PRO, Steel Structures
Industrial structures are used in power, petrochemical, agriculture and manufacturing sectors. The function of industrial structures is to encounter the extreme variations in loads that are likely to occur during manufacturing and finishing process of any industry such as temperature variation, variation in internal pressure and exposure to highly toxic and corrosive materials. Hence, it is important to have detailed information regarding the industrial processes and their effects, as this may guide to compute the loads in order to design a stable industrial structure. In the present work an existing industrial building subjected to different loading and having two strengthening methods: provision of secondary beams normal to the primary beams and providing knee bracings. The analysis has been performed using STAAD Pro V8i.Time history analysis is carried out for machine loading. For earthquake loading, both linear static and linear dynamic methods are used. The results indicate that the fundamental time period reduces with strengthening techniques and overall stiffness of the structure increases. The resonance frequency can be eliminated. Further, the provision of secondary beams normal to the primary beams gives better results.
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