Modelling of Glulam beams pre-stressed by compressed wood

Anshari, B, Guan, ZW ORCID: 0000-0002-6967-3508 and Wang, QY (2017) Modelling of Glulam beams pre-stressed by compressed wood. Composite Structures, 165. pp. 160-170.

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Abstract

Finite element models were, in the first time, developed to simulate the pre-stressing behaviour of Glulam beams with insertion of compressed wood blocks, which were further used to simulate the structural behaviour of the pre-stressed beams subjected to subsequent destructive bending. Here, both the Glulam and compressed wood were modelled as orthotropic elasto-viscoplastic materials. The moisture-dependent, including spring back, swelling of the compressed wood block and the creep of the Glulam were considered in the modelling. The models developed were validated against the corresponding experimental results, with reasonably good correlation in terms of the free swelling, the precamber, initial stress state of the Glulam beams reinforced and load-deflection relationships. With validated models, further studies were then undertaken to investigate effects of the thickness, depth and spacing of compressed wood blocks on the precamber, initial bending stiffness and ultimate load carrying capacity of the beams pre-stressed. The results indicate that there are significant enhancements on the precamber (up to 1/288 of the deflection/span ratio), the initial bending stiffness (up to 23.8%) and the ultimate load carrying capacity (up to 10.4%)

Item Type:	Article
Additional Information:	publisher: Elsevier articletitle: Modelling of Glulam beams pre-stressed by compressed wood journaltitle: Composite Structures articlelink: http://dx.doi.org/10.1016/j.compstruct.2017.01.028 content_type: article copyright: © 2017 The Authors. Published by Elsevier Ltd.
Uncontrolled Keywords:	Moisture-dependent swelling, Glulam beam, Compressed wood, Finite element, Pre-stressing, Visco-plasticity
Depositing User:	Symplectic Admin
Date Deposited:	02 Mar 2017 11:15
Last Modified:	19 Jan 2023 07:14
DOI:	10.1016/j.compstruct.2017.01.028
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3006151