Browsing by Subject "systemy ramowe"

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Access status: Open Access ,
Rezerwa wytrzymałości rygli systemu ramowego szkieletu żelbetowego
(2007) Kinasz, Roman
Thrust forces which arise on support of crossbars of a frame of a reinforced concrete skeleton of a building positively influence their work and as consequence-increase load-carrying ability. During carrying out of inspection of four-storeyed six flying frames the estimation of distribution of efforts thrust on support of reinforced concrete crossbars on all floors in view of features pivots connections of crossbars with columns is executed. Results of the executed researches have confirmed presence and influences of thrust efforts on support of reinforced concrete crossbars of a frame on increase in their carrying ability, that in the works many researchers theoretically expected. The essential increase in load-carrying ability of reinforced concrete crossbars of overlappings (from 40 up to 4%) depending on height of their accommodation in a frame system is received. Crossbars of a covering practically have no reserves on the second group of limiting conditions in connection with the big width of disclosing of normal cracks in them.