Finite-Element Models for Slender, Posttensioned Masonry Walls Loaded Out-of-Plane
Publication: Journal of Structural Engineering
Volume 137, Issue 12
Abstract
Nonlinear finite-element models were developed, verified, and used to simulate the measured response of twelve 3.54 m (11.6 ft) tall posttensioned masonry walls with () cross sections that were tested to failure under uniform lateral loading in a laboratory. Variables included masonry type, wall slenderness, degree of tendon restraint, and prestress magnitude. The force-displacement relations obtained from the experimental tests of the walls were simulated using models developed by using an extended version of the program Dynamic Response Analysis of Inelastic Two-Dimensional Structures (DRAIN-2DX), and the results illustrate the influence of tensile strength, masonry type, magnitude of prestress, and tendon restraint on wall response to out-of-plane lateral loading. The computations indicate that load-displacement response of posttensioned masonry (PTM) walls is influenced by masonry tensile strength and that the stiffness and number of tendon restraints have a direct effect on peak load capacity and postpeak unloading slope. Tendon stress and masonry compression strain responses to applied loading were also investigated using finite-element analysis.
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Information
Published In
Journal of Structural Engineering
Volume 137 • Issue 12 • December 2011
Pages: 1489 - 1498
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Jan 26, 2010
Accepted: Mar 24, 2011
Published online: Mar 26, 2011
Published in print: Dec 1, 2011
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