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FE Modelling of Notched Connections for Timber-Concrete Composite Structures

https://research.thinkwood.com/en/permalink/catalogue1693
Year of Publication
2016
Topic
Connections
Mechanical Properties
Material
Timber-Concrete Composite
Application
Beams
Floors
Author
Bedon, Chiara
Fragiacomo, Massimo
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
Timber-Concrete Composite
Application
Beams
Floors
Topic
Connections
Mechanical Properties
Keywords
Finite Element Model
Numerical Model
Failure Mechanisms
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 4272-4280
Summary
Notched connections are extensively used in timber-concrete (TC) composite beams and floors. Their main advantage is a significantly higher shear strength and stiffness compared to mechanical fasteners. Several mechanical and geometrical aspects, however, should be properly taken into account for design optimization of notched connections, as they strongly affect their structural performance and the corresponding failure mechanisms. In this paper, a preliminary Finite-Element (FE) numerical investigation is carried out by means of full 3D numerical models. The mechanical behaviour of each connection component (e.g. the reinforced concrete topping, the steel coach screw, the timber beam) is properly implemented. Shear or crushing failure mechanisms in the concrete, possible plasticization of the coach screw, as well as longitudinal shear or tension perpendicular to the grain failure mechanisms in the timber beam are taken into account using cohesive elements, damage material constitutive laws and appropriate surface-tosurface interactions. The results of parametric FE studies are compared to experimental data derived from literature, as well as to the results of simplified analytical models, demonstrating that the FE model is capable to capture the experimental behaviour of the connection including the failure mechanisms.
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Free
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The Numerical Analysis and Experimental Verification on the Thermal Performance of Hybrid Cross-Laminated Timber (CLT)-Glass Facade Elements

https://research.thinkwood.com/en/permalink/catalogue2704
Year of Publication
2020
Topic
Energy Performance
Material
CLT (Cross-Laminated Timber)
Author
Rajcic, Vlatka
Bedon, Chiara
Barbalic, Jure
Perkovic, Nikola
Year of Publication
2020
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Topic
Energy Performance
Keywords
Structural Glass
CLT-Structural Glass Hybrid Facade
Small-Scale Experiments
Finite Element Modelling
Numerical Modelling
Language
English
Conference
Challenging Glass Conference
Research Status
Complete
Summary
Structural solutions involving the mechanical interaction of timber and glass load-bearing members showed a progressive increase in the last decade. Among others, a multipurpose hybrid facade element composed of Cross-Laminated Timber (CLT) members and glass panels interacting by frictional contact mechanisms only was proposed ion the framework of the VETROLIGNUM project. While demonstrating enhanced load-bearing and deformation capacity performances under seismic loads, facade elements are known to represent a building component with multiple performance parameters to satisfy. These include energy efficiency, durability, lightening comfort and optimal thermal performance. In this paper, a special focus is dedicated to the thermal performance assessment of CLT-glass facade modules under ordinary operational conditions. Based on the thermal-chamber analysis of small-scale prototypes, reliable Finite Element numerical models are developed and applied to full-scale VETROLIGNUM solution. Sensitivity analyses are hence carried out to explore the actual thermal performance of these novel hybrid systems.
Online Access
Free
Resource Link
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Numerical Modelling of Timber Concrete Composite Structures in Fire - Guidance Document

https://research.thinkwood.com/en/permalink/catalogue2166
Year of Publication
2018
Topic
Fire
Design and Systems
Material
Timber-Concrete Composite
Glulam (Glue-Laminated Timber)
LVL (Laminated Veneer Lumber)
Application
Wood Building Systems
Beams