Static Analysis of Multi-Stiffened Coupled Shear Walls on Flexible Foundations

Effects of openings on the seismic behavior and performance level of concrete shear walls

10.31224/osf.io/phfyd ◽

2019 ◽

Author(s):

Hossein Alimohammadi ◽

Mostafa Dalvi Esfahani ◽

Mohammadali Lotfollahi Yaghin

Keyword(s):

Static Analysis ◽

Cross Section ◽

Seismic Behavior ◽

Shear Walls ◽

Shear Wall ◽

Constant Cross Section ◽

Added Resistance ◽

Different Shapes ◽

And Performance ◽

Abaqus Software

In this study, the seismic behavior of the concrete shear wall considering the opening with different shapes and constant cross-section has been studied, and for this purpose, several shear walls are placed under the increasingly non-linear static analysis (Pushover). These case studies modeled in 3D Abaqus Software, and the results of the ductility coefficient, hardness, energy absorption, added resistance, the final shape, and the final resistance are compared to shear walls without opening.

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Pushover Analysis Based on Equivalent Diagonal Springs for the Assessment of the Seismic Safety of Post-and-Beam Timber Buildings Braced with Nailed Shear Walls

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.755.170 ◽

2017 ◽

Vol 755 ◽

pp. 170-180

Author(s):

Natalino Gattesco ◽

Ingrid Boem

Keyword(s):

Static Analysis ◽

Pushover Analysis ◽

Shear Walls ◽

Nonlinear Static Analysis ◽

Plastic Behavior ◽

Ground Acceleration ◽

Good Reliability ◽

Equivalent Viscous Damping ◽

Seismic Safety ◽

Capacity Spectrum

A method for a simplified modeling of post-and-beam timber buildings braced with nailed shear walls, useful for seismic design purposes, is presented and discussed in the paper. This strategy is based on the schematization of the vertical diaphragms through equivalent diagonal springs with elastic-plastic behavior and allows the assessment of the resisting ground acceleration by performing nonlinear static analysis; the Capacity Spectrum method based on equivalent viscous damping was applied. This nonlinear procedure constitutes a reliable and simple alternative to the linear static analysis using the behavior factor q. The procedures to determine the characteristics of the equivalent elements (stiffness and load-carrying capacity) are based on analytical evaluations, starting from the actual characteristic of shear walls. A comparison between the results of numerical simulation based of more refined and complex models, previously presented by the authors, and this time-reducing, simplified analysis proved the good reliability of the method.

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