Eksperimentalna in numerična analiza lesenih okvirnih stenskih elementov z odprtinami

doktorska disertacija

Erika Kozem Šilih (Author), Miroslav Premrov (Mentor)

Abstract

Doktorska disertacija obravnava panelne stene, izdelane iz lesenega okvirja in enoslojnih mavčno-vlaknenih obložnih plošč, ki vsebujejo odprtino za okno ali vrata. Disertacija je usmerjena v nadaljevanje raziskovalnega dela, izvedenega v zadnjih letih na področju analize nosilnosti za prevzem vodoravnih obtežb montažnih stenskih elementov brez odprtin. Obravnavani stenski elementi predstavljajo sovprežne konstrukcije, sestavljene iz lesenega okvirja in obložnih plošč, ki so na okvir pritrjene z mehanskimi veznimi sredstvi - sponkami. Osnovni namen disertacije je določiti vpliv dimenzij odprtine na nosilnost in togost stenskega elementa. V okviru razsikave smo izvajali eksperimentalne teste nosilnosti in numerične analize s pomočjo računalniških izračunov po metodi končnih elementov. Numerično analizo smo izvajali z dvema komercialnima programskima paketoma za analizo konstrukcij: TNO Diana in SAP 2000. Primerjava rezultatov numeričnih analiz z rezultati eksperimentalnih preiskav je pokazala dobro ujemanje. Glede na rezultate zaključujemo, da imajo stenski paneli z odprtinami lahko pomemben vpliv na togost in nosilnost montažnih stenskih sistemov, ki ga ni primerno zanemariti. Lastne eksperimentalne in numerične rezultate smo primerjali z rezultati treh metod iz literature, in sicer z Metodo B povzeto po Evrokodu 5, z metodo, uporabljeno za stenske elemente z lesnimi obložnimi ploščami in z metodo, uporabljeno za križno lepljene masivne KLH stene. V splošnem nobena izmed primerjalnih metod ni uporabna za obravnavane stenske panele z mavčno-vlaknenimi obložnimi ploščami, kar nakazuje pomanjkanje podatkov za projektiranje tovrstnih konstrukcij v inženirski praksi.

Keywords

lesene konstrukcije;leseni okvirni stenski elementi;mavčno vlaknaste plošče;modeliranje;metoda končnih elementov;togost;nosilnost;

Data

Language:	Slovenian
Year of publishing:	2012
Source:	Maribor
Typology:	2.08 - Doctoral Dissertation
Organization:	UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Publisher:	E. Kozem Šilih]
UDC:	624.011.1.046.2:[962.2:691.311-419](043.3)
COBISS:	15992854
Views:	2994
Downloads:	277
Average score:	0 (0 votes)
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Other data

Secondary language:	English
Secondary title:	Experimental and numerical analysis of timber framed wall elements with openings
Secondary abstract:	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.
Secondary keywords:	timber structures;timber framed walls;fibre plaster boards;fasteners;modelling;finite element method;Lesene konstrukcije;Disertacije;
URN:	URN:SI:UM:
Type (COBISS):	Dissertation
Thesis comment:	Univ. Maribor, Fak. za gradbeništvo
Pages:	XVIII, 140 str.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;civil and structural engineering in general;gradbena tehnika;gradbeništvo;structures and structural parts according to material and method of construction;nosilne konstrukcije in deli nosilne konstrukcije po gradivu [materialu] in načinu gradnje;applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;building (construction) trade;building materials;building practice and procedure;gradbeništvo;gradbeni materiali;gradbene obrti in dela;building materials;building components;gradiva;gradbeni [konstrukcijski] deli;
ID:	1017393