Validation of a Structural Model of a Large Timber Truss With Slotted-in Steel Plates and Dowels

Landel, Pierre; Linderholt, Andreas

doi:10.47964/1120.9356.18990

Cited by 2 publications

(5 citation statements)

References 7 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 Laurent Giampellegrini, Director ppa., knippershelbig, Germany, l.giampellegrini@knippershelbig.com 2 Anthony Rety, Structural Engineer, Binderholz, France, anthony.rety@binderholz.com 3 Guillaume Caussarieu, Head of Computational Timber Engineering, knippershelbig, Germany, g.caussarieu@knippershelbig.com 4 Tim Sleik, Head of Research and Development, Binderholz, Austria, tim.sleik@binderholz.com 5 Lucia Theurer, Structural Engineer, knippershelbig, Germany, l.theurer@knippershelbig.com 6 Johannes Pohl, Structural Engineer, Binderholz, Austria, johannes.pohl@binderholz.com 7 Tobias Wacker, Managing Director, Wacker Ingenieure, Germany, t.wacker@wacker-ingenieure.de…”

Section: Figure 1: Architectural Rendering Of the Fyrtornet Towermentioning

confidence: 99%

“…Furthermore, these methods are approximations that cover only simple geometries, and the effect of the surrounding buildings is not considered leading to uncertainties in, for instance, the force coefficients and peak factors. Moreover, as pointed out in the comparative study in [6], the methods according to the EKS 11, BFS 2019:1 [7] yield a significantly higher accelerations than those presented in EN 1991-1-4 [8]. The Eurocode framework does not provide methods to calculate the across-wind accelerations nor those arising from torsional modes.…”

Section: Analytical Assessment Of Vibrationsmentioning

confidence: 99%

“…To calculate the accelerations in the along-wind direction, the method in EN 1991-1-4 [8] was used according to the framework set-out in Annexe B. This method has also been employed in recent studies [6][9][10] [11] to assess the wind-induced acceleration of tall mass timber buildings to meet the ISO 10137:2007 [4] comfort standards. In particular, based on the comparative studies in [6], the input parameters according to the EKS 11, BFS 2019:1 [7] were used for the reasons already mentioned above.…”

Section: Analytical Assessment Of Vibrationsmentioning

confidence: 99%

“…This method has also been employed in recent studies [6][9][10] [11] to assess the wind-induced acceleration of tall mass timber buildings to meet the ISO 10137:2007 [4] comfort standards. In particular, based on the comparative studies in [6], the input parameters according to the EKS 11, BFS 2019:1 [7] were used for the reasons already mentioned above. The wind-induced accelerations in the across-wind direction were calculated according to the Canadian National Code NBCC [12], with the basic wind input data brought back into the Eurocode framework.…”

Section: Analytical Assessment Of Vibrationsmentioning

confidence: 99%

“…Due to the fact that (a) the Fyrtornet tower consists of a CLT core and slab diaphragms made up from 1.25m wide panels connected with a significant number of dissipative connectors (b) on the periphery, bracing is provided by a braced post-and-beam system, joined with dowel-type connections across multiple shear planes (c) each floor has at least 4cm of floating screed and (d) the building is closed with a timber façade system, it is expected that the overall damping of the tower will be significant. Most studies that address the issue of wind-induced vibrations tend to take damping ratios in the vicinity of 2% of critical, see for instance [6][9][10] [11]. Damping ratios from measured examples show a significant scatter: minimum values tend to be around 1.3% while high damping ratios around 3%-4% and values in excess of 5% have been reported [14][15] [16].…”

Section: Dampingmentioning

confidence: 99%

See 4 more Smart Citations

Design of a Tall Mass Timber Tower for Occupant Comfort Under Wind-Induced Accelerations

Giampellegrini,

Rety,

Caussarieu

et al. 2023

World Conference on Timber Engineering (WCTE 2023)

View full text Add to dashboard Cite

The current trend of increasing the height limits of timber buildings makes wind-induced accelerations for occupant comfort an important design parameter. This article presents the two-step process used for the design of a 51m tall mass timber tower located in Sweden. The lateral stiffness of the tower is provided through a CLT inner core and a braced glulam post-and-beam system along its outer periphery. The structural scheme, the dynamics of high-rise timber structures, the 3D modelling assumptions to capture the global stiffness with suitable accuracy as well as the analytical state-of-the-art methods used to determine the wind-induced accelerations in the along-wind, across-wind and torsional direction at the top of the tower are presented. Through a parameter study, the sensitivity of the structure to changes in connection stiffnesses and mass distribution is assessed. Given the uncertainty inherent to the analytical methods, the calculations are validated in a second step against the acceleration response obtained from wind tunnel testing. The differences between the analytical and experimental approaches are compared and the key parameters are discussed.

show abstract

Section: Figure 1: Architectural Rendering Of the Fyrtornet Towermentioning

confidence: 99%

Section: Analytical Assessment Of Vibrationsmentioning

confidence: 99%

Section: Analytical Assessment Of Vibrationsmentioning

confidence: 99%

Section: Analytical Assessment Of Vibrationsmentioning

confidence: 99%

Section: Dampingmentioning

confidence: 99%

See 3 more Smart Citations

Design of a Tall Mass Timber Tower for Occupant Comfort Under Wind-Induced Accelerations

Giampellegrini,

Rety,

Caussarieu

et al. 2023

World Conference on Timber Engineering (WCTE 2023)

View full text Add to dashboard Cite

show abstract

Experimental Investigation and Finite Element Modelling for Solid Warren Dowelled Timber Roof Truss

Dzulkifli,

Hidayat,

Hassan

et al. 2024

Preprint

View full text Add to dashboard Cite

Timber trusses are available in various sizes and shapes and can be placed in situ or prefabricated. Unfortunately, the usage of solid timber as a structural material is limited in Malaysia compared to concrete and steel. Hence, this research investigates the structural experimental performance and finite element modelling for solid timber Warren dowelled connections roof trusses using Chengal species. The goals encompassed assessing flexural performance, establishing a correlation between strength and stiffness, and conducting a comparative study between finite element analysis and experimental findings. The experimental research entailed subjecting a Warren roof truss constructed entirely from solid wood under four-point bending load testing. The truss exhibited a linear response during both the application and removal of the load until it reached its elastic limit. Nonlinearity, resulting from the deformation and fracturing of timber at connections, was detected when the load reached 68.88 kN, ultimately leading to failure at 182.76 kN. The displacements of different components were measured, indicating ductile behaviour and failure of the joints. The objective of utilising the ABAQUS program for finite element modelling was to corroborate the experimental findings. The first model displayed a 42.91% disparity in modulus of rupture (MOR) compared to the experimental results. By meticulously calibrating material properties, the model updating process resulted in a significant 75.23% enhancement in stress. This adjustment successfully aligned the stress values obtained from the Finite Element Method (FEM) with the experimental findings. Comparisons between the experimental and Finite Element Method (FEM) results for the Modulus of Rupture (MOR) demonstrate significant enhancement after the updating process, resulting in a decrease of ΔS from 42.91–0.036%. Direct comparison of displacement values was not possible due to substantial discrepancies. This study provides significant findings on the performance of solid Warren-dowelled timber roof trusses, highlighting the crucial role of exact calibration of material properties for accurate finite element modelling.

show abstract

Validation of a Structural Model of a Large Timber Truss With Slotted-in Steel Plates and Dowels

Cited by 2 publications

References 7 publications

Design of a Tall Mass Timber Tower for Occupant Comfort Under Wind-Induced Accelerations

Design of a Tall Mass Timber Tower for Occupant Comfort Under Wind-Induced Accelerations

Experimental Investigation and Finite Element Modelling for Solid Warren Dowelled Timber Roof Truss

Contact Info

Product

Resources

About