CALCULATION OF BEARING STRENGTH OF OVERHEAD AND LOWER BELTS OF FARMS OF COVERAGE OF 6D TYPE HOTHOUSES
A method is considered, on the concrete example of hothouses of type of 6D, for calculation of bearing strength of overhead and lower belts of farms of coverage. The vital necessity of deep analysis of the question of bearing strength appeared in the light of satisfied mass erection of hothouses constructions of which are bought in the countries of Near East. However, a simple transfer of constructions of hothouses made in the countries of Near East can not be successful on the territory of the Russian Federation. These constructions of hothouses can not be maintained in some conditions, according to service exploitation, like snow loadings, in other cases - wind loadings, and in third case, a construction can collapse without visible reasons. The conducted successive static, dynamic and seismic analysis, executed due to the normative documents and the norms of supplier operating on the territory of the Russian Federation, in attachment to the real sections of bearings structural elements, allowed us expose the stated below percentage of the use of the examined elements of constructions. Lower belt of farms of coverage: on the norms of the Russian Federation, on the first maximum state percent of the use - 395 %; there is a percent of the use on the second maximum state - 999 %; on the norms of the Russian Federation taking into account loadings of supplier, on the first maximum state percent of the use - 339,3 %; there is a percent of the use on the second maximum state - 999 %. Overhead belt of farms of coverage: on the norms of the Russian Federation, on the first maximum state percent of the use - 495,2%; there is a percent of the use on the second maximum state - 361,4 %; on the norms of the Russian Federation taking into account loadings of supplier, on the first maximum state percent of the use - 150,8 %; there is a percent of the use on the second maximum state - 146,2%. Analysis presented allows establishing that at the load of overhead and lower belts of farms of coverage of hothouses, by combinations of loadings characteristic for the place of location of hothouse of type of 6d, their bearing strength, and buildings in general can not be provided