Kondriukova I. The stress-strain state modeling of layered composite slabs on beam grillage

In this dissertation it is proposed a new method of finding specified stress-strain state components of layered composite slabs, and on beam grillage too. The methodic is based on using mathematical analogy of shear equation and that of classical bending of the thin slab. On the basis of this method a computation algorithm is built with using modern computation method - Finite Element Method (FEM). It is researched a cross shear influence on Stress-Strain State (SSS) components of composite layered slabs. It is made an estimation of specifying deflections and stresses in the case of specifying of cross shear strain. The proposed method is used for researching SSS of "sandwich" composite slab, which is represented three-layered slab (steel-filler-steel) with a layer of hydroisolation and asphalt concrete surface, working together with a three-dimensional system of beam grillage. While modeling the slab and beam system by FEM it is used finite element of zero-curveage shell. Various load combinations: constant load (self-weight) and temporary one (A-15, НК-100) are considered.