EFFICIENCY OF SPHERICAL SHELLS ON THE BASIS OF PRELIMINARY TENSION FOR ELEMENTS OF COVERINGS AND CEILINGS OF MULTYSTORY BUILDINGS
The present research is aimed to determine efficiency of application of flat covers with positive Gauss curvature as coverings/ceilings for many-storied buildings. Thanks to more favorable intense-deformed condition in comparison with flat plates, shallow shells can overlap wider aisles, have smaller deflections, and therefore the bigger rigidity. There is also study concerning issue of using as diaphragms of beam covers on the basis of preliminary tension which was in turn reached without extending. Such beams in comparison with usual metal ones of the same section have rigidity 2 times larger. Regarding implementation of such beams in skeleton system, it is reasonable to assert about increasing of bearing capacity to 5 times. This is possible to achieve in frameworks with rigid jamming of beams. This is resulted because at the given connection the arising basic moment is directed to the same side with the effort of preliminary tension. They supplement each other and produce a larger opposite curve than a deflection from external loading.