DDP - Zverejnená diplomová práca

Optimalizácia kombinovaného lepeného lamelového nosníka vyrobeného z buka a pawlovnie

Autor
Berecz, Tomáš
Školiteľ
Lagaňa, Rastislav
Oponent
Rohanová, Alena
Škola
Technická univerzita vo Zvolene DF KND (DF)
Rok odovzdania
2020
Trvalý odkaz - CRZP
https://opac.crzp.sk/?fn=detailBiblioForm&sid=2C8AB4190B6536A9D5861F7B1CEB
Primárny jazyk
slovenčina

Typ práce
Diplomová práca

Študijný odbor
3339 | konštrukcie a procesy výroby drevárskych výrobkov

Dátum zaslania práce do CRZP
11.06.2020

Dátum vytvorenia protokolu
11.06.2020

Dátum doručenia informácií o licenčnej zmluve
29.06.2020

Práca je zverejniteľná od
11.06.2023

Elektronická verzia
 Prehliadať
For the constructions of wooden buildings are required good mechanical properties and good thermophysical parameters. We designed an alternative instead standard spruce construction element - a combined glued laminated timber beam made of beech and paulownia. The beams were in 3 variants of 3 samples, with a constant height of the central zone of paulownia 90 mm and a variable height of the edge lamellas of beech: 20 mm, 30 mm and 40 mm. We performed bending tests according to STN EN 408, number of beams 9, the results were: local modulus of elasticity in bending 13 798 MPa (var. 7,0%), global modulus of elasticity in bending 10 231 MPa (var. 7,1%), modulus of rupture 43 MPa (var. 21,7%), share modulus 199 MPa (var. 18,5%). The values are given converted to sample moisture wabs=12%. Using Anova analysis, we found that the height of the beech lamella did not have a significant effect on the mechanical properties of the beams. The beams failed in shear in the middle - in the paulownia zone. A 30% proportion of beech wood, distributed along the edges in a combined glued laminated timber, is sufficient. The density of absolutely dry beech and paulownia wood were ρ0=674 kg.m-3 and ρ0=219 kg.m-3, respectively.

Verzia systému: 6.2.61.5 z 31.03.2023 (od SVOP)