Application of response surface method in analysis of hydraulic structures

摘要

The goal of this master thesis was an application of probabilisticudmethods in analysis of hydraulic structures. Results were obtainedudthorough the coupling of Monte Carlo simulation with the responseudsurface method. First of all, there is a brief introduction of usedudmethodology, scope of input data and description of basic variables.udFor the numerical experiment of Moste dam TNO Diana finite elementudprogram was used to obtain displacements and stress components.udBased on the results of numerical experiment approximate responseudsurfaces were formed. The response surface method is a powerfuludreliability method that approximates the response function with audpolynomial expression using the values of the function at specific points.udActual response function was then replaced by approximate responseudin the Monte Carlo simulation.udThe finite element model of a hydraulic gate on the Moste dam wasuddeveloped using Radimpex Tower 6. Basic variables values for bothudthis model and model of the dam were formed on the basis of a realudmeasured data. The influence of the thickness of reinforcements on theudvalue of displacement of the gate was considered. By doing so, theudpossibility of use of this method in a process of structure optimisationudwas shown.udFinally, a response surface method was used for additionaludinterpretation of laboratory measurements of the standing wave forudwater sports. We determined the probability of occurrence of certainudwave height depending on the discharge.udAt the end the response surface method was presented as a powerfuludtool for analysis of broad variety of challenges in hydraulics and civiludengineering.