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Kalibracija modela montažnih drvenih zidnih okvira izrađenih od drva Hieronyma alchorneoides i Gmelina arborea uz pomoć čavala i vijaka
- Source :
- Drvna industrija, Volume 69, Issue 1
- Publication Year :
- 2018
- Publisher :
- Faculty of Forestry and Wood Technology, University of Zagreb, 2018.
-
Abstract
- The object of this research is to develop a model for the calibration of prefabricated timber wall frames (PTWFs) with dimension of 244 by 244 cm (width by height) respectively made of Gmelina arborea Roxb. and Hieronyma alchorneoides Allemão wood and two types of fastener (nails and screws). The PTWFs were submitted to a lateral load test and the vertical and horizontal displacement, maximum load (Pm), strength, stiffness values and mode of failure were determined. Results showed a greater failure percentage in the joint between the central stud and the top and bottom plates for both species and both fastener types used. PTWFs made of H. alchorneoides timber using screws showed greatervalues than PTWFs made of G. arborea for load at the proportionality limit and maximum load. Finally, computational model showed that the highest calibration percentage was achieved in the vertical orientation in PTWFs made using nails in both species. Meanwhile, PTWFs using screws showed calibration percentages of 58.0 and 43.5 %. The highest calibration percentage of 89.9 % was recorded in G. arborea PTWFs joined with nails, whereas the lowest calibration percentage of 69.4 % was recorded in H. alchorneoides PTWFs joined with screws.<br />Cilj istraživanja bio je razviti model za kalibraciju montažnih drvenih zidnih okvira (PTWF) dimenzija 244 × 244 cm (širina × visina) izrađenih od drva Gmelina arborea Roxb. i Hieronyma alchorneoides Allemão te uz upotrebu dviju vrsta vezivnih elemenata (čavala i vijaka). PTWF-ovi su podvrgnuti testu bočnog opterećenja te su utvrđeni vertikalni i horizontalni pomak, maksimalno opterećenje (Pm), čvrstoća, krutost i način oštećenja. Rezultati su pokazali najveći postotak oštećenja u spoju između središnjeg nosača i gornjega odnosno donjeg okvira za PTWF-ove od obiju vrsta drva i spojenih obama tipovima vezivnih elemenata. PTWF-ovi izrađeni od drva H. alchorneoides i spojeni vijcima imali su veće vrijednosti opterećenja na granici proporcionalnosti i maksimalnog opterećenja od PTWF-ova proizvedenih od drva G. arborea. Konačno, računalni je model pokazao da je najveći postotak kalibracije postignut u vertikalnom smjeru u PTWF-ova izrađenih od obiju vrsta drva i spojenih čavlima. Istodobno, PTWF-ovi spojeni vijcima pokazali su postotke kalibracije 58,0 i 43,5 %. Najveći postotak kalibracije bio je 89,9 %, a zabilježen je u PTWF-u od drva G. arborea i spojenom čavlima, dok je najniži postotak kalibracije ustanovljen u PTWF-u od drva H. alchorneoides spojenom vijcima, a iznosio je 69,4 %.
- Subjects :
- 040101 forestry
business.product_category
biology
business.industry
Hieronyma alchorneoides
0211 other engineering and technologies
structural timber
vertical diaphragms
lateral loads
light frame
fastener
calibration model
Forestry
04 agricultural and veterinary sciences
02 engineering and technology
Structural engineering
biology.organism_classification
Fastener
građevno drvo
vertikalne membrane
bočna opterećenja
svjetlosni okvir
vezni elementi
model kalibracije
021105 building & construction
Calibration
Nail (fastener)
0401 agriculture, forestry, and fisheries
Gmelina
business
Geology
Subjects
Details
- Language :
- English
- ISSN :
- 18471153 and 00126772
- Volume :
- 69
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Drvna industrija
- Accession number :
- edsair.doi.dedup.....01c8e9e44d8c02636d2b093b659cc0e6