Abstract
In this work, the problem of bending of a multilayered concrete beam of arbitrary cross-section by explosive loading on a visco-elastic basis is considered. It is assumed that different grades of concrete can be realized in layers in the cross-section. The property of concrete resistance to tension and compression is considered in work. It is assumed that the dynamic loading is caused by consecutive explosion of two charges over the middle of the span of beam. The distribution of bending moments and deflections of the beam at each time is determined. The time of the end of motion and the residual deflection of beam are found.
Highlights
The beginning of the research of reinforced concrete structures was laid by A
That even though in the mentioned works it is often noted that the calculations were carried out including the building structures made of reinforced concrete, the specific property of concrete and reinforced concrete structures that is associated with their significant resistance to tension and compression was not taken into account when carrying out specific calculations within the framework of that model [7,8,9]
The calculation of reinforced concrete structures is often limited to the case of the simplest forms of rod cross-sections and the simplest conditions of loading and fastening
Summary
The beginning of the research of reinforced concrete structures was laid by A. The model turned out to be quite simple and convenient in design engineering practice and was widely developed [2,3,4,5,6]. It should be noted, that even though in the mentioned works it is often noted that the calculations were carried out including the building structures made of reinforced concrete, the specific property of concrete and reinforced concrete structures that is associated with their significant resistance to tension and compression was not taken into account when carrying out specific calculations within the framework of that model [7,8,9]. Modern technological means of creating flexible sets of hybrid laminated structures, where in cross-section different grades of concrete can be realized in layers, are not considered
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