Campus Units

Civil, Construction and Environmental Engineering

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

2020

Journal or Book Title

Earthquake Engineering and Structural Dynamics

DOI

10.1002/eqe.3257

Abstract

The investigation of structural single rocking walls (SRWs) continues to gain interest as they produce self-centering lateral load responses with reduced structural damage. The Simple Rocking Model (SRM) with modifications has been shown to capture these responses accurately if the SRW and its underlying base are infinitely rigid. This paper advances previous rocking models by accounting for: 1) the inelastic actions at or near the base of the SRW; and 2) the flexural responses within the wall. Included in the proposed advancements are hysteretic and inherent viscous damping associated with these two deformation components so that the total dynamic responses of SRWs can be captured with good accuracy. A system of nonlinear equations of motion is developed, in which the rocking base is discretized into fibers using a zero-length element to locate the associated compressive deformations and damage. The flexural deformations of the rocking body are captured using an elastic term, while the impact events are modeled using impulse-momentum equations. Comparisons with experiments of structural precast concrete and masonry SRWs show that the proposed approach accurately estimates the dynamic responses of different SRWs with and without unbonded posttensioning, for various dynamic excitations and degrees of hysteretic action. Using the proposed approach, a numerical investigation employs different configurations of structural SRWs to quantify the various sources of energy loss, including hysteretic action and impact damping, during various horizontal ground motions.

Research Focus Area

Geotechnical/Materials Engineering

Comments

This is the peer-reviewed version of the following article: Kalliontzis, Dimitrios, Arturo E. Schultz, and Sri Sritharan. "Generalized Dynamic Analysis of Structural Single Rocking Walls (SRWs)." Earthquake Engineering and Structural Dynamics (2020), which has been published in final form at DOI: 10.1002/eqe.3257. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Posted with permission.

Copyright Owner

John Wiley & Sons, Ltd.

Language

en

File Format

application/pdf

Available for download on Friday, February 05, 2021

Published Version

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