Reliability-based overstrength factors of cross-laminated timber shear walls for seismic design

2021 ◽  
Vol 228 ◽  
pp. 111547
Author(s):  
Angelo Aloisio ◽  
Massimo Fragiacomo
Keyword(s):  
Seismic Design ◽  
Shear Walls ◽  
Cross Laminated Timber ◽  
Timber Shear Walls

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

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.

Analytical study on seismic force modification factors for cross-laminated timber buildings

2013 ◽  
Vol 40 (9) ◽  
pp. 887-896 ◽  
Author(s):  
Shiling Pei ◽  
Marjan Popovski ◽  
John W. van de Lindt
Keyword(s):  
Seismic Design ◽  
Analytical Study ◽  
Planning Process ◽  
Shear Walls ◽  
Building Performance ◽  
Structural System ◽  
Cross Laminated Timber ◽  
Process Use ◽  
Seismic Force ◽  
Design Earthquake

With two producers in operation and over 20 buildings already constructed or in planning process, use of cross-laminated timber (CLT) is gaining popularity in Canada. Since CLT as a structural system is currently not included in the National Building Code of Canada (NBCC), one of the most important issues are the values for the force modification factors for seismic design of CLT structures when NBCC equivalent static force procedure is used. In this study, a test-calibrated numerical model for CLT shear walls was applied to develop the design resistances for typical CLT wall configurations. An estimation of a possible range of Rd-factors was obtained by developing design variations for three multi-storey CLT apartment buildings. By specifying the desired seismic performance in terms of inter-storey drift, it is concluded that an Rd-factor of 2.0 will likely provide desirable building performance during the design earthquake level event in Vancouver, B.C.

scholarly journals Lateral Performance of Cross-laminated Timber Shear Walls: Analytical and Numerical Investigations

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.

Deflection of cross-laminated timber shear walls for platform-type construction

2020 ◽  
Vol 221 ◽  
pp. 111091
Author(s):  
Md Shahnewaz ◽  
Marjan Popovski ◽  
Thomas Tannert
Keyword(s):  
Shear Walls ◽  
Cross Laminated Timber ◽  
Type Construction ◽  
Timber Shear Walls

Hysteresis behavior of bracket connection in cross-laminated-timber shear walls

2013 ◽  
Vol 48 ◽  
pp. 980-991 ◽  
Author(s):  
Yin-Lan Shen ◽  
Johannes Schneider ◽  
Solomon Tesfamariam ◽  
Siegfried F. Stiemer ◽  
Zai-Gen Mu
Keyword(s):  
Shear Walls ◽  
Cross Laminated Timber ◽  
Hysteresis Behavior ◽  
Timber Shear Walls

scholarly journals Hyperelastic hold-down for cross-laminated timber shear walls

2020 ◽  
Author(s):  
◽  
Hosein Asgari
Keyword(s):  
Experimental Studies ◽  
Residual Deformation ◽  
Tall Buildings ◽  
Shear Walls ◽  
High Strength ◽  
Cyclic Tests ◽  
Cross Laminated Timber ◽  
High Rise ◽  
Strength And Deformation ◽  
Timber Shear Walls

Cross-laminated Timber (CLT) is increasingly being used in tall buildings. However, there are some challenges when designing high-rise CLT structures, amongst them the need for novel hold-downs (HD), for shear walls. While commonly used HDs behave as a dissipative connection, the current Canadian Standard for Engineering Design in Wood recommends designing HDs as a non-dissipative connection. As hyperelastic material, an elastomer (rubber) is capable to carry high loads without inelastic deformation. This thesis presents experimental studies at material- and component-levels using a hyperelastic rubber HD solution for CLT walls. A total of 53 quasi-static monotonic and cyclic tests were performed. The HDs exhibited high strength and deformation capacity without any residual deformation after unloading. The shape factor and loaded area of rubber layers were found as the main effective factors on the rubber HD’s response, and an empirical load-displacement relation was also developed based on these parameters.

Sign in / Sign up

Export Citation Format

Share Document