Մետաղական կամուրջների ամրությունը և դիմացկունությունը

Abstract

This article discusses a beam metal continuous span structure. Construction according to the scheme 84+105+105+84 m. Its solution for strength has been given, and the final results have been obtained. For further solution, the coefficient K is included, which shows the uneven distribution of stresses across the width of the orthotropic slab. The cross sections of the elements on the support and in the middle of the span are determined. The strength and endurance of the longitudinal ribs of the orthotropic slabs have been also controlled. Design loads, A-14  and NK-100, pedestrians and its own weight. Dynamic coefficients for
AK-14 1 =14, and for NK-100 1 =1,0, and they remain constant in all calculations. In addition, it is necessary to enter banding coefficients for the  loads, which are also constant s₁=1, s₂ = 0,6, s₃ = …= s_i = 0,3: