Steel framed structures with cross laminated timber infill shear walls and semi-rigid connections

Vogiatzis, Tzanetis; Tsalkatidis, Themistoklis; Avdelas, A. V.

doi:10.14419/ijet.v8i4.29742

Cited by 4 publications

(7 citation statements)

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“…For the convenience of the design, two of the parameters are combined together. A new parameter α E is defined in Equation (7). It is named the self-centering ratio.…”

Section: Influences Of the Lateral Wall-to-frame Stiffness Ratiomentioning

confidence: 99%

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Self-Centering Steel–Timber Hybrid Shear Wall: Experimental Test and Parametric Analysis

Cui

Chen

et al. 2020

Materials

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Due to timber material’s environmental benefits and satisfactory structural properties, the studies on providing solutions to the application of timber to mid-rise or even high-rise buildings have been recently increasing. Among them, the steel–timber hybrid shear wall (STHSW) is one of the promising lateral resisting systems. However, the application of the system is limited because of its unsatisfactory earthquake resilience. In this paper, a new system, self-centering (SC)-STHSW, is proposed by introducing post-tensioned (PT) technology into the STHSW system. The cyclic loading test of one full-scale SC-STHSW specimen was conducted. The new system was proved to have both satisfactory self-centering capacity and the sufficient energy dissipation. Within the OpenSees platform, a numerical model was developed and validated by the experiment result. The model was further used in the parametric analysis. The system’s self-centering capacity, energy dissipation performance and the ultimate strength were evaluated under multiple parameters. The parameters included the initial PT stress ratio, the relative value of the damper’s activation force, the wood shear wall’s resistance, the beam section height and the wood shear wall’s strength. The lateral wall-to-frame stiffness ratio was also considered. Each parameter’s effects on three different performances of the system were analyzed. Based on the analysis results, a design parameter, a self-centering ratio, was proposed. The ratio was suggested to be larger than 0.5 to ensure a favorable self-centering performance in the system. This study provides support to the application of the innovative steel–timber hybrid structural system in practical engineering.

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“…For the convenience of the design, two of the parameters are combined together. A new parameter α E is defined in Equation (7). It is named the self-centering ratio.…”

Section: Influences Of the Lateral Wall-to-frame Stiffness Ratiomentioning

confidence: 99%

“…With the advantages of wood material, timber structure has been earning increasing attention in recent decades. A lot of research has been focused on making timber structure more applicable to mid-rise or even high-rise buildings [3][4][5][6][7]. The hybridization between timber and steel material is one of the research hotspots [8].…”

Section: Introductionmentioning

confidence: 99%

Self-Centering Steel–Timber Hybrid Shear Wall: Experimental Test and Parametric Analysis

Cui

Chen

et al. 2020

Materials

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“…Seismic performance can similarly be enhanced by combining materials to optimise ductility, strength, and stiffness, all of which contribute to the dynamic structural behaviour of buildings (Quintana Gallo and Carradine, 2018). The most popular concepts of steel-timber hybrid systems are the steel frame with CLT shear walls (Dickof et al, 2014;Tesfamariam et al, 2014;Vogiatzis et al, 2019) and the timber frame with steel plate shear walls, (Conrad and Phillips, 2019;Igbal et al, 2020), the former concept is the focus of this work. Please note that in this as well as the following sections, unless otherwise stated, the abbreviation STSW refers to the concept of steel frame with CLT shear walls, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

“…The aforementioned tested hybrid system was numerically investigated by (Li et al, 2014), and further developed with a post-tensioned steel frame and light frame wood shear wall by (Cui et al, 2020). Recently, a hybrid system composed of steel frames with semirigid connections and CLT shear walls was designed and analyzed by the authors (Vogiatzis et al, 2019), although the post-elastic phase was not considered in that work.…”

Section: Introductionmentioning

confidence: 99%

The wall–frame interaction effect in CLT-steel hybrid systems

Vogiatzis

Tsalkatidis

Efthymiou

2022

Front. Built Environ.

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Behaviour and capacity of cross-laminated timber (CLT) infills built inside steel frames have been given increasing research attention in recent years. It is widely accepted that when the CLT wall panel is built in tight contact with the bounding steel frame to participate in the load sharing, its inherently large in-plane stiffness will attract additional forces to the frame area and change the behaviour of the hybrid system. If not designed properly, the structural integrity of both the infill and the frame will be compromised. It is thus crucial to accurately evaluate the contribution of the infill CLT wall panel to the stiffness and strength of the hybrid system. To that end, a finite element study was performed to investigate the frame-wall interaction effect on the behaviour of hybrid systems. The lateral stiffness, lateral load capacities and hysteretic characteristics of the hybrid systems with frictional and connected interfaces were investigated. The load-sharing effect between the CLT wall and the steel frame was studied. The numerical results showed that the connected models were very effective as the infill absorbed a substantial part of the lateral load, during the initial stages of loading.

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“…The anisotropic nature of the wood in order to be simulated as an orthotropic material model requires a number of independent material properties which are difficult to measure and usually, they are not reported in the available publications. It is common among scholars to simplify the input values for radial and tangential direction, this can also be seen on the numerical modelling of hybrid steel framed with cross laminated timber infill shear walls -STSW [13], bolted hybrid connections [14], steel-timber composite floors [15], and hold-down connections for masstimber buildings [16]. From the available literature, it appears that although some reported experimental studies could be found in [2], very limited analytical or numerical investigation was reported on the behaviour of wood-steel composite shear wall systems.…”

Section: Introductionmentioning

confidence: 99%

Wood-steel composite shear walls with openings

Vogiatzis

Tsalkatidis

Avdelas

2020

IJET

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This paper reports an investigation into the behaviour of wood-steel composite shear walls, consisting of strand laminated lumber boundary frames with infill steel plates. Recently it has been shown that wood-steel composite shear wall systems can offer various advantages over code-approved wood frame shear walls, including architectural flexibility. However, further research is needed so as to gain a better insight and understanding into the structural behaviour of this lateral load resisting system. On this basis, three-dimensional full-scale finite element models are developed and used to simulate the wood-steel composite shear wall with solid infill plates and with centrally-perforated infill plates. In this paper, firstly, a three-dimensional finite element model of wood-steel composite shear wall under monotonic loading. The numerical results were compared with experimental data and it was found that the model can predict the behaviour of wood-steel composite shear walls with reasonable precision. Using the verified model, a parametric study on wood-steel composite shear wall models with and without openings was performed. Critical parameters influencing the wood-steel composite shear walls behaviour such as the thickness of the steel plate and the opening ratio were investigated. The results of this parametric study provide useful information for the engineering application of wood-steel composite shear wall systems.

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Steel framed structures with cross laminated timber infill shear walls and semi-rigid connections

Cited by 4 publications

References 0 publications

Self-Centering Steel–Timber Hybrid Shear Wall: Experimental Test and Parametric Analysis

Self-Centering Steel–Timber Hybrid Shear Wall: Experimental Test and Parametric Analysis

The wall–frame interaction effect in CLT-steel hybrid systems

Wood-steel composite shear walls with openings

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