Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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Lebed Vyacheslav Evgenyevich

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Kuban State Agrarian University
   

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Articles count: 1

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ESTIMATION OF BEARING STRENGTH OF BRACES AND STRUTS OF FARMS OF COVERAGE OF 6D TYPE HOTHOUSES

abstract 1071503056 issue 107 pp. 806 – 835 31.03.2015 ru 808
The method of estimation of bearing strength of braces and struts of farms of coverage of hothouses is presented in the article. The deep analysis of the question of bearing strength appeared in the light of mass erection of hothouses, especially in the South Federal district, the construction of which had been bought in the countries of Near East. However, simple transfer of the constructions of hothouses made in foreign countries can not be considered as rational on the territory of the Russian Federation. The constructions of hothouses in most do not maintain exploitation even in one winter, when the considerable snow loadings are, and wind as well. The necessity of bringing of clarity for the folded situation became more obvious. Conducted successive static, dynamic and seismic analyses, executed upon the normative documents and due to the norms of supplier operating on the territory of the Russian Federation, in attachment to the real sections of bearings structural elements, allowed to expose the stated below percents of the use of the examined elements of constructions. Supporting braces of farms of coverage: on the norms of the Russian Federation, on the first maximum state percent of the use – 999 %; 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 – 999 %; there is a percent of the use on the second maximum state – 999 %; Stretched braces of farms of coverage: on the norms of the Russian Federation, on the first maximum state percent of the use – 64,2%; there is a percent of the use on the second maximum state – 721,8 %; on the norms of the Russian Federation taking into account loadings of supplier, on the first maximum state percent of the use – 25,8 %; there is a percent of the use on the second maximum state – 721,8%. Analysis presented allows establishing that at the load of supporting, stretched and central braces 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 can not be provided in general
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