INFLUENCE STIFFNESS OF SHEAR BONDS ON THE STRESS-STRAIN STATE OF MULTISTOREY BUILDINGS

Abstract

The paper considers issues the nonlinear behavior of shear bonds affecting the changes in the distribution of stresses and strains in vertical structures, as well as to compare these stresses and strains with the linear statement of the problem solution in which the compliance of the bonds is constant.

In a complex multiconnected system of the multistory building, the new redistribution of stresses arises, which does not coincide with the original distribution of stresses. To correct the stiffness value for the bonds, the experimental data were used. A secant module was used to determine the stiffness for vertical joints. Loading was performed by the step method. At the extreme stage of loading, the redistribution of stresses in the load-bearing elements of the building showed their significant leveling. The issue of ultimate deformations of shear bonds limiting the process of redistribution of stresses and deformations requires discussion.