| Abstract [eng] |
The purpose of this master’s thesis is to create a calculation methodology for flexural RC members, strengthened with additional layer of concrete, evaluating the influence of shear stiffness and long term deformations. The thesis begins with a literature review which examines the different ways of strengthening monolithic slabs and beams, examines what determines adhesion between existing concrete layer and newly poured concrete. In addition, deformation distribution among them is examine. There are two calculation models in the second part. The first model evaluates short term deformations, while the second model evaluates long term deformations. Both models consist of three calculation methods which determine interaction between layers: no interaction, full interaction and partial interaction. Derived equations allow to calculate bending moments for each layer and the shear forces between them at different slip. The third part presents the selected and calculated constant values during all calculations. Results with different slip between layers were graphically compared. Comparable load-bearing capacity of the structure, cracking moments, distribution of bending moments and shear forces, deformations, stresses and deflection of the structure. Conclusions are given for the results. Components of the thesis are as follow: list of tables (20 tables), list of pictures (46 pictures), introduction, literature review, analytical calculation, results, conclusions, list of literature (31 sources), appendixes (3 parts). |
