ENGINEERING METHODS FOR CALCULATION OF REINFORCED CONCRETE STATICALLY UNDEFINED ROD SYSTEMS
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2017, Vol 170, Issue 4
Abstract
Methods are proposed for calculating statically indeterminate rod systems, taking into account the nonlinear work of materials and taking into account cracks. The method of discrete registration of the stiffness of sections of reinforced concrete elements makes it possible to calculate complex statically indeterminate systems using a deformed scheme, taking into account the nonlinear diagrams of material deformation. The use of this method involves obtaining a "bending moment-curvature" relationship. On the basis of the obtained dependence, the stiffness of the sections of the elements of the rod systems is determined. This method allows us to calculate nonlinear rod systems, using software complexes designed for the calculation of elastic systems. Two more methods are based on the method of design resistances of reinforced concrete. They make it possible to carry out engineering calculations of statically indeterminate systems using predefined tables. The rigidity refinement method allows determining the curvature of the cross sections using the previously calculated table parameters of the stress-strain state. The method of linearization of stiffness parameters allows determining the deflections of reinforced concrete elements, for various statically determinate circuits. A statically indeterminate system can bepartitioned into simple statically determinate circuits, having previously determined the cross sections along the length of elements with zero bending moments. Thus, the calculation will be reduced to determining the parameters of the stress-strain state of several simple schemes.
Authors and Affiliations
Dmitry Kochkarev
Keywords
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- EP ID EP314812
- DOI 10.18664/1994-7852.170.2017.111301
- Views 77
- Downloads 0
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