Proposal of an analytical procedure and a simplified numerical model for elastic response of single-storey timber shear-walls

2019 ◽

pp. 213-218

Author(s):

Md Shahnewaz ◽

Thomas Tannert ◽

Marjan Popovski

Keyword(s):

Parametric Study ◽

Experimental Validation ◽

Analytical Procedure ◽

Shear Walls ◽

Finite Element Models ◽

Seismic Loads ◽

Viable Option ◽

Cross Laminated Timber ◽

Type Construction ◽

Timber Shear Walls

Cross-laminated timber (CLT) is becoming a viable option for mid-rise buildings in North America. CLT walls are very effective in resisting lateral forces resulting from wind and seismic loads, yet no standard provisions are available to estimate the resistance of CLT shear walls under lateral loading. The present research investigated CLT shear wall’s performance by evaluating the preferred kinematic rocking behaviour. An analytical procedure was proposed to estimate the resistance of CLT shear walls in a platform type construction. Finite element models of CLT shear with various brackets and hold-downs connections were developed. The models were validated against experimental results. Furthermore, a parametric study on CLT shear walls with the variation of type and number of connectors was conducted. The resistance estimated from parametric study and against analytical were compared. The proposed formulas can be useful tool for the design of CLT platform-type buildings, however, require further experimental validation.

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Lateral performance of timber shear walls reinforced by prestressed diagonal cross bars

Annales de Chimie Science des Matériaux ◽

10.3166/acsm.42.233-243 ◽

2018 ◽

Vol 42 (2) ◽

pp. 233-243

Author(s):

HONGLIANG ZUO ◽

Y LI ◽

Jing DI ◽

NAN GUO

Keyword(s):

Shear Walls ◽

Timber Shear Walls

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A SIMPLIFIED ANALYTICAL PROCEDURE FOR SEISMIC ANALYSIS OF TIMBER LIGHT-FRAME SHEAR WALLS

NED University Journal of Research ◽

10.35453/nedjr-stmech-2019-0054 ◽

2019 ◽

Vol 3 (Special Issue on First SACEE'19) ◽

pp. 173-180

Author(s):

Giorgia Di Gangi ◽

Giorgio Monti ◽

Giuseppe Quaranta ◽

Marco Vailati ◽

Cristoforo Demartino

Keyword(s):

Analytical Procedure ◽

Seismic Analysis ◽

Shear Walls ◽

Element Model ◽

Sensitivity Analyses ◽

Width Ratio ◽

Damping Factor ◽

Equivalent Viscous Damping ◽

Design Variables ◽

Depth Analysis

The seismic performance of timber light-frame shear walls is investigated in this paper with a focus on energy dissipation and ductility ensured by sheathing-to-framing connections. An original parametric finite element model has been developed in order to perform sensitivity analyses. The model considers the design variables affecting the racking load-carrying capacity of the wall. These variables include aspect ratio (height-to-width ratio), fastener spacing, number of vertical studs and framing elements cross-section size. A failure criterion has been defined based on the observation of both the global behaviour of the wall and local behaviour of fasteners in order to identify the ultimate displacement of the wall. The equivalent viscous damping has been numerically assessed by estimating the damping factor which is in use in the capacity spectrum method. Finally, an in-depth analysis of the results obtained from the sensitivity analyses led to the development of a simplified analytical procedure which is able to predict the capacity curve of a timber light-frame shear wall.

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Lateral resistance of mass timber shear wall connected by withdrawal-type connectors

Journal of Wood Science ◽

10.1186/s10086-021-01967-7 ◽

2021 ◽

Vol 67 (1) ◽

Author(s):

Sung-Jun Pang ◽

Kyung-Sun Ahn ◽

Seog Goo Kang ◽

Jung-Kwon Oh

Keyword(s):

Experimental Data ◽

Seismic Design ◽

Shear Walls ◽

Shear Wall ◽

Vertical Load ◽

Lateral Resistance ◽

Kinematic Models ◽

Mass Timber ◽

Timber Shear Walls ◽

Timber Shear Wall

AbstractIn this study, the lateral resistances of mass timber shear walls were investigated for seismic design. The lateral resistances were predicted by kinematic models with mechanical properties of connectors, and compared with experimental data. Four out of 7 shear wall specimens consisted of a single Ply-lam panel and withdrawal-type connectors. Three out of 7 shear wall specimens consisted of two panels made by dividing a single panel in half. The divided panels were connected by 2 or 4 connectors like a single panel before being divided. The applied vertical load was 0, 24, or 120 kN, and the number of connectors for connecting the Ply-lam wall-to-floor was 2 or 4. As a result, the tested data were 6.3 to 52.7% higher than the predicted value by kinematic models, and it means that the lateral resistance can be designed by the behavior of the connector, and the prediction will be safe. The effects of wall-to-wall connectors, wall-to-floor connectors and vertical loads on the shear wall were analyzed with the experimental data.

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