Monotonie and cyclic tests of timber shear walls

1992 ◽  
Vol 19 (3) ◽  
pp. 415-422 ◽  
Author(s):  
J. D. Dolan ◽  
B. Madsen
Keyword(s):  
Analytical Study ◽  
Shear Walls ◽  
Shear Wall ◽  
Displacement Curve ◽  
Cyclic Tests ◽  
Maximum Displacement ◽  
Load Displacement ◽  
Timber Shear Walls ◽  
Ramp Load ◽  
Monotonic Load

The results for monotonic (ramp load) and slow cyclic racking tests of timber shear walls are presented. The tests are part of an extensive experimental and analytical study to investigate the behaviour of timber shear walls subjected to earthquakes. The results of full-size shear wall tests show the important influence of the nail connection between the sheathing and the framing on the load-displacement characteristics of shear walls. The premise that the hysteresis for the shear wall is contained within an envelope defined by the monotonic load-displacement curve for the wall is confirmed. Also, the hysteresis is studied to determine the physical behaviour that causes the shape of the hysteresis to be dependent on the maximum displacement of the wall. Both the monotonic and cyclic racking behaviours of timber shear walls are established; and the performances of plywood and waferboard sheathed shear walls are compared. Key words: full-scale monotonic and cyclic tests, plywood, waferboard, timber shear walls.

Monotonic and cyclic nail connection tests

1992 ◽  
Vol 19 (1) ◽  
pp. 97-104 ◽  
Author(s):  
J. D. Dolan ◽  
B. Madsen
Keyword(s):  
Grain Orientation ◽  
Analytical Study ◽  
Shear Walls ◽  
Displacement Curve ◽  
Nonlinear Load ◽  
Cyclic Shear ◽  
Principal Connection ◽  
Load Displacement ◽  
Timber Shear Walls ◽  
Monotonic Load

The results of monotonic and cyclic nail connection lateral tests are presented. The tests are part of an extensive experimental and analytical study to investigate the behaviour of timber shear walls subjected to earthquakes. The results from the nail connection tests were used in a larger study of timber shear walls. The nonlinear load–deflection curves were used for modelling the nail connection between the sheathing and the framing of the shear walls. The dependency of the nail connection on the grain orientation of the timber materials is investigated along with the evidence that the material properties of the nails are the primary parameters for the load–displacement characteristics of the connection made with hot-dipped, galvanized common nails. Both the monotonic and cyclic lateral behaviours of the connections are established. The premise that the hysteresis for the nail connection is contained within an envelope defined by the monotonic load–displacement curve is confirmed. These connection characteristics translate into similar behaviour in nailed timber shear walls. Therefore, an improved undertanding of the principal connection used in the construction of shear walls will also improve the understanding of the behaviour of shear walls. Key words: connections, nails, plywood, waferboard, monotonic, cyclic, shear wall.

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.

Monotonic and Cyclic Tests of Round Bamboo Shear Walls

2012 ◽  
Vol 517 ◽  
pp. 135-140 ◽  
Author(s):  
Zhi Li ◽  
Yan Xiao ◽  
Bo Shan ◽  
Lei Li ◽  
Rui Wang
Keyword(s):  
Mechanical Properties ◽  
Cyclic Loading ◽  
Shear Walls ◽  
Loading Conditions ◽  
Test Results ◽  
Cyclic Tests ◽  
Lateral Resistance ◽  
Load Displacement

This paper reports the first step of a study to evaluate the lateral resistance capacity of Round bamboo shear walls and its mechanical properties under Monotonic and cyclic loading conditions. The bamboo shear walls are built with round bamboo as its stub and with ply-bamboo sheet as its sheathing. Load-displacement curves of six round bamboo shear walls, with three different connection types, were obtained in this experiment, and the test results showed that the lateral resistance capacity of round bamboo shear walls can exceed 4.0kN/m, satisfying the projects requirement. A combination of nail and panel failures were observed in the test.

The Analytical Study for Seismic Performance of Coupled Steel Plate Shear Wall

2013 ◽  
Vol 831 ◽  
pp. 149-152
Author(s):  
Kang Min Lee ◽  
Keun Yeong Oh ◽  
Rui Li ◽  
Liu Yi Chen ◽  
Woo Seok Kim
Keyword(s):  
Seismic Performance ◽  
Parametric Analysis ◽  
Analytical Study ◽  
Steel Plate ◽  
Shear Walls ◽  
Shear Wall ◽  
Structural System ◽  
Steel Plate Shear Wall ◽  
High Rise ◽  
Coupled Shear Wall

In the last several decades, coupled shear wall have become recognized as efficient lateral load resisting systems for high-rise structures, increasingly. Coupled shear walls give considerable lateral stiffness and strength as well as providing an architecturally practical structural system. In this paper, in order to observe seismic performance of coupled steel plate shear wall, models of previous study was verified, and coupled shear wall with steel plate was carried out with various parametric analysis. Parametric analysis was performed with various width of bay. As a result, model that aspect ratio of steel plate was close to 1 was the most structurally safe.

Nonlinear Static Analysis of RC Shear Wall Structure Based on Opensees

2010 ◽  
Vol 163-167 ◽  
pp. 1425-1430
Author(s):  
Zhi Hong Pan ◽  
Ai Qun Li ◽  
Yi Gang Sun
Keyword(s):  
Static Analysis ◽  
Shear Wall ◽  
Constitutive Law ◽  
Nonlinear Static Analysis ◽  
Displacement Curve ◽  
Analysis Method ◽  
Perforated Wall ◽  
Nonlinear Static ◽  
Load Displacement ◽  
Rc Shear Wall

To study the seismic performance of RC shear wall, and to develop its fine nonlinear analysis method, systemic studies on nonlinear static analysis and it’s realization method are carried out. Beginning with rotating-angle softened-truss model for coupled shear and flexural responses, analytical model of solid wall is presented based on the comparative study on four types of constitutive law of concrete for confined concrete of boundary zone. Good agreements between analytical and experimental results of load-displacement relation are found, which indicates that the proposed analytical method can reflect the global mechanical behavior of shear wall well. Studies on coupling beam and global perforated wall modeling are implemented, then modeling approach and nonlinear static analysis method for perforated wall are proposed. Comparing analytical load-displacement curve to experimental, initial stiffness and first turning point agree well and analytical ultimate capacity is close to experimental, which is shown that the load-displacement curve can actually exhibit the general load-displacement trend of perforated wall.

Bilinear Load–Displacement Curve of Semi-supported Steel Shear Walls

2019 ◽  
Vol 20 (2) ◽  
pp. 504-524
Author(s):  
S. Ebrahim Sadat Kholerdi ◽  
Alireza Jahanpour
Keyword(s):  
Shear Walls ◽  
Displacement Curve ◽  
Load Displacement

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.

Lightweight Woodframe Shear Walls with Ply-Bamboo Sheathings

2016 ◽  
Vol 847 ◽  
pp. 529-536 ◽  
Author(s):  
Zhi Li ◽  
Yan Xiao ◽  
Giorgio Monti ◽  
Rui Wang
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Cyclic Test ◽  
Light Weight ◽  
Test Results ◽  
New Type ◽  
Timber Shear Walls

A new type of hybrid wood-bamboo shear wall was studied. Ply-bamboo is used as the sheathing panel for conventional two-by-four lightweight woodframe shear walls herein. Two different nails were adopted for the ease constructability and used for constructing the shear walls, as follows: gun-driven T shape nail and 6d common nail. Monotonic and cyclic test results of sheathing-frame connectors and corresponding full scare shear walls were also reported. The results obtained from the research reported in this paper indicated that ply-bamboo panels can be used as sheathings for light-weight timber shear walls.

The Dynamic Response of Wood-Frame Shear Walls with Viscoelastic Dampers

1999 ◽  
Vol 15 (1) ◽  
pp. 67-86 ◽  
Author(s):  
David W. Dinehart ◽  
Harry W. Shenton ◽  
Timothy E. Elliott
Keyword(s):  
Energy Dissipation ◽  
Dynamic Performance ◽  
Shear Walls ◽  
Shear Wall ◽  
Cyclic Tests ◽  
Viscoelastic Dampers ◽  
Energy Dissipation Capacity ◽  
Wood Frame ◽  
Constant Source ◽  
Design Construction

Results are presented of an experimental investigation, the objectives of which were to evaluate and compare the performance of conventional plywood shear walls with walls that include viscoelastic (VE) dampers. Cyclic tests were conducted on conventional walls and walls with VE dampers; five different damper configurations were tested. The walls with the VE dampers showed an increase in the total energy dissipation and an increase in the effective stiffness, relative to the conventional wall, with increases in energy dissipation as high as 59 percent. Tests demonstrated that the sheathing-to-stud and corner dampers can easily be installed within the confines of the wall and can be utilized without impacting the design, construction, or finishing of the shear wall. The results demonstrate that addition of the viscoelastic dampers significantly enhanced the dynamic performance of the walls by increasing the energy dissipation capacity and providing a constant source of energy dissipation.

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