System analysis and contributions to the consolidation under exploitation of surface elements

In the presented paper are analyzed rehabilitation problems of surface plane elements under exploitation. The aspects discussed will consist a solid recommendation for the design practice. The complexity of the consolidation issue of slabs under exploitation derives from the large number of parameters which define the initial situation and imposes the adoption of an optimal rehabilitation solution. The research objective is an analysis of the stiffness effect and the position of consolidated elements on the stress strain state under loads of slabs. The modelling focuses on an existing situation which consists of a continuous reinforced concrete slab supported on steel beams. Beam stiffnesses significantly influences the stresses in the slab. Inadequate values of these stiffnesses which are a consequence of the design process or execution errors and the need to increase the load capacity of the slab require the slab consolidation. The analysis process involves choosing the appropriate position and an adequate rigidity of the consolidated system. Its efficiency and implicitly the effect of the stress state on the consolidated element have a major significance.