Dr. Atul K. Desai, Associate Professor Applied Mechanics Department – SVNIT-Surat
IntroductionIn every country, developed or developing, one has to face more and more complicated structural problems. We know that, in a fast growing country like India, the growth of cities are very high, the development is confined within city areas, so, people from near by areas migrates toward the city. Due to this, land is a scarce commodity and hence vertical expansion of the structure is the only solution to fulfill all the residential, commercial & industrial, requirements. So, one has to move towards multipurpose-multistoried structures for residences and industries, in which stack like structure is one type of the category, and the sky-pod is covered under stack like structure.
Sky-pod structure's main purpose is to support radio and television antenna tower at greater height for wide range transmission as well to facilitate hotels, casino, viewing gallery etc by using its height and give a remarkable and pleasant look to structure and city area.
And due to the race to built tallest in whole world posses one of the greatest problems of today's tall buildings is their vulnerability to environmental excitations such as wind leading to horizontal vibration and vulnerability to seismic force. Under the action of wind and excessive vibration, serviceability and occupant comfort are under a great threat. Even though the structure still carries satisfactorily all the lateral loads, it must satisfy the serviceability requirements.
Though as the height increases wind response increases, but, different parameters of structure like, (height of structure, height of steel mast above concrete pod and various shape of shafts), has great significance on the structural behaviour. And some optimum solution can be achieved.
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