Стержневые модели среза сжатых бетонных полос консольных опор ригелей многоэтажных каркасов

Abstract

Rod models for assessing the strength of compressed concrete strips under the action of a cut of short cantilevers of crossbars between the supporting and “conditional” cargo platforms are proposed based on modeling their physical work. The basis for improving the calculation method is a single principle for constructing rod models of compressed concrete strips of short elements – there is the method of copying the trajectories of force cracks and fracture patterns. The improvement of the calculation method was carried out on the basis of the development of the above-considered method for determining the strength of concrete strips under the action of compression along an inclined strip and the action of a cut between the faces of the cargo and support platforms inside the compressed strip. In the process of improving practical recommendations for the calculation, the patterns of modification of rod models under the action of compression and shear were used, depending on the change in the main factors. All proposals for the calculation are brought to the level of practical application and are substantiated by experiment.