Dimensionering av platta på mark : En jämförelse mellan hand- och datorberäkningar

Sammanfattning

The digital revolution has introduced several tools for structural engineers in the form of computer programs. These computer tools have partly transformed the role of structural engineers from their performing manual calculations to using different computer programs, evaluating the results, and checking codes. Advanced computer-based calculation programs are often relied on when dimensioning structural parts. However, these are associated with certain consequences, especially when using black box software, which increases the need for an estimated model. The purpose of this paper is to examine how the design of a concrete slab is estimated and how the results of such an estimate calculation relate to the results from computer calculations. The research method involves three main steps: gathering facts from references to learn how to design a concrete slab; developing a calculation model; and learning how to use PEPS, which is a type of black box software for performing calculations. In the analysis, PEPS is compared with manual calculations and the following conclusions are drawn based on the results: The estimate dimensioning of an edge-stiffened concrete slab can be simplified by using the equilibrium equation based on the edge beam. Results from this simplified method will differ from results produced by the computer program. Simplified calculations are used to check the reasonableness of the PEPS results: Although PEPS indicates the cause of the bearing capacity of the concrete slab, the program fails to demonstrate how the results are calculated.