Eksperimentalna in numerična analiza lesenih okvirnih stenskih elementov z odprtinami : doktorska disertacija

slovenian

doktorska dela

2012

Univerza v Mariboru, Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo

The Ph.D. thesis deals with timber framed wall elements coated with single fibre plaster boards (FPB), containing an opening for a door or window. The thesis represents a continuation of the research work on the horizontal load-bearing capacity of prefabricated wall elements without openings, realized in the recent years. The considered wall elements represent composite structures composed of a timber frame and the sheating boards which are attached to the frame by mechanical fasteners-staples. The main purpose of the thesis was to determine the influence of the opening on the load-bearingcapacity and stiffness of the wall element. For the purpose of the research both the experimental load tests as well as the numerical analyses using the computer calculations by the finite element method (FEM) were carried out. The numerical analyses were performed using two commercial FEM computer programmes: TNO Diana and SAP 2000. The comparison of the results of the numerical analyses with the results of the experimental tests showed a good coincidence. Based on the results we conclude that the wall elements with openings may have an important impact on the stifness and capacity of wall sistems and thus their contribution should not be ignored. The experimental and numerical results were also compared to three methods from the literature: the Method B from Eurocode 5, the method used for plywood-sheated timber-frame wall elements and the method used for solid X-lamtimber wall elements. In general none of the comparative methods proved to be applicable to the considered FPB-sheated wall elements which indicates a lack of suitable data for the design of such structures in engineering practice.

07.08.2023