Displacement‐based seismic analysis for out‐of‐plane bending of unreinforced masonry walls

TLDR

The study evaluates the seismic resistance of brick masonry walls under out‑of‑plane bending. A simplified linearized displacement‑based method employing a trilinear force–displacement relationship and recommendations for substitute structures is used to predict flexural failure, with results compared to experiments and nonlinear time‑history analyses. The displacement‑based procedure yields significantly more accurate predictions than the force‑based method. © 2002 John Wiley & Sons, Ltd.

Abstract

Abstract This paper addresses the problem of assessing the seismic resistance of brick masonry walls subject to out‐of‐plane bending. A simplified linearized displacement‐based procedure is presented along with recommendations for the selection of an appropriate substitute structure in order to provide the most representative analytical results. A trilinear relationship is used to characterize the real nonlinear force–displacement relationship for unreinforced brick masonry walls. Predictions of the magnitude of support motion required to cause flexural failure of masonry walls using the linearized displacement‐based procedure and quasi‐static analysis procedures are compared with the results of experiments and non‐linear time‐history analyses. The displacement‐based procedure is shown to give significantly better predictions than the force‐based method. Copyright © 2002 John Wiley & Sons, Ltd.