scholarly journals Cyclic response of scaled low-rise shear walls with concealed bracings

2020 ◽  
Vol 54 (4) ◽  
pp. 447-455
Author(s):  
M. Gan ◽  
M. Kang ◽  
C. Long ◽  
L. Li
Keyword(s):  
Shear Walls ◽  
Cyclic Response ◽  
Concealed Bracings

Timber shear walls with large openings: experimental and numerical prediction of the structural behaviour

2002 ◽  
Vol 29 (5) ◽  
pp. 713-724 ◽  
Author(s):  
Nicolas Richard ◽  
Laurent Daudeville ◽  
Helmut Prion ◽  
Frank Lam
Keyword(s):  
Finite Element ◽  
Oriented Strand Board ◽  
Dynamic Performance ◽  
Shear Walls ◽  
Dissipated Energy ◽  
Model Parameters ◽  
Nonlinear Phenomena ◽  
Structural Behaviour ◽  
Cyclic Response ◽  
Wood Frame

A numerical model based on the finite element method is presented for prediction of the cyclic response of wood frame structures. The model predicts the cyclic response of shear walls. Nonlinear phenomena are assumed to be concentrated in the connections that are modelled through elements linking the structural elements including the posts, beams, and sheathing panels. Identification of model parameters relies on tests on individual connections. Connection tests on different nail lengths were conducted under monotonic and cyclic lateral loads. Based on the results from past studies that indicate the pull-through failure is an important failure mode in common nail connections with lumber and oriented strand board (OSB), washers were considered as a means to reinforce the connection. The influence of reinforced nailing on the static and dynamic performance of full-size wood frame shear walls with large openings, sheathed with OSB panels, was evaluated experimentally. Combinations of parameters were studied, such as the number of hold-downs, the panel shapes, the nail distribution, and the bracing systems. Comparisons of the dissipated energy per cycle revealed a higher capacity for walls using nails with washer reinforcement than without. Results from numerical simulations of the monotonic and cyclic tests performed on the walls are presented.Key words: timber shear wall, connections, finite element, dissipated energy.

scholarly journals Assessment of the Seismic Response of CLT Shear Walls Using the EEGBW, a Bouc–Wen Class Predictive Model

2021 ◽  
Vol 6 (4) ◽  
pp. 55
Author(s):  
Angelo Aloisio ◽  
Massimo Fragiacomo
Keyword(s):  
Dynamic Analysis ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Analysis ◽  
Shear Walls ◽  
Numerical Data ◽  
Seismic Excitation ◽  
Quadratic Error ◽  
Cyclic Response ◽  
The Stability ◽  
Energy Dependent

The paper presents an application of the Extended Energy-dependent Generalized Bouc–Wen model (EEGBW) to simulate the experimental cyclic response of Cross-Laminated Timber (CLT) panels. The main objectives of the paper are assessing the sensitivity of the quadratic error between experimental and numerical data to the EEGBW parameters, showing the fitting performance of the EEGBW model in matching the experimental cyclic response of CLT panels, highlighting the stability of the model in nonlinear dynamic analysis with seismic excitation. The research proves that the considered Bouc–Wen class hysteresis model can reproduce the hysteretic response of structural arrangements characterized by pinching and degradation phenomena. The model exhibits significant stability in nonlinear dynamic analysis with seismic excitation. The model’s stability and versatility endorse its application to simulate structural systems’ dynamic response when Finite Element modelling might be an impractical choice.

Static Cyclic Response of Partially Grouted Masonry Shear Walls

2012 ◽  
Vol 138 (7) ◽  
pp. 864-879 ◽  
Author(s):  
Shawn M. Nolph ◽  
Mohamed A. ElGawady
Keyword(s):  
Shear Walls ◽  
Cyclic Response

Experimental Research of Low Shear Wall with SMA Bars Concealed Bracings

2012 ◽  
Vol 204-208 ◽  
pp. 3311-3314
Author(s):  
Wen Jie Ren ◽  
Peng Fei He ◽  
Ru Jia
Keyword(s):  
Shape Memory Alloy ◽  
Seismic Performance ◽  
Experimental Research ◽  
Residual Deformation ◽  
Shear Walls ◽  
Shear Wall ◽  
Static Tests ◽  
Concealed Bracings ◽  
Strength And Ductility ◽  
Low Shear

Many researchers study the seismic performance of shear wall embedded with reinforced concealed bracings, but not take the shape memory alloy bars concealed bracings into account. Quasi-static tests of a low shear wall with reinforced concealed bracings and a low shear wall with SMA bars concealed bracings are performed to study the seismic performance of the shear walls. Bearing capacity, stiffness, ductility, hysteretic energy and residual deformation of two specimens are researched and analyzed. The experimental results indicate that the SMA bars concealed bracings can increase the strength and ductility of the low shear wall considerably.

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