Out-of-Plane Bending of URM Walls Strengthened with FRP Strips –Modeling and Analysis

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Out-of-Plane Bending of URM Walls Strengthened with FRP Strips –Modeling and Analysis

Author(s): E. Hamed and O. Rabinovitch

Publication: Special Publication

Volume: 230

Issue:

Appears on pages(s): 249-268

Keywords: analysis; cracking; debonding; FRP; masonry; out-of-planebending; strengthening; theoretical modeling

Date: 10/1/2005

Abstract:
The modeling and analysis of un-reinforced masonry walls strengthenedwith externally bonded unidirectional composite laminates and subjected to out-of-plane loading is investigated. The model is based on variational principles, staticequilibrium, and compatibility between the structural components, which include themasonry units (blocks), the mortar joints, the FRP strips, and the adhesive layers. Themodeling of the masonry block and the mortar joints follows the small displacementsand the Bernoulli-Euler beam theories. The strengthening FRP strips are modeledfollowing the lamination theory and the adhesive layers are modeled as twodimensional linear elastic continuum. The effects of cracking of the mortar joints andthe debonding of the composite laminates near the mortar joints are also considered. Anumerical example is presented. The numerical results quantitatively describe some ofthe phenomena that govern the behavior of the strengthened wall and may lead to itsfailure. A summary and conclusions close the paper.