Title: Modeling Time-Dependent Deformations of a Masonry Wall Post-Tensioned with CFRP

Author(s): M.M. Reda Taha, K.-K. Choi, M. Tait, and S.L. Lissel

Publication: Symposium Paper

Volume: 245

Issue:

Appears on pages(s): 37-56

Keywords: creep; FE analysis; fiber-reinforced polymers (FRP); masonry; masonry post-tensioning

DOI: 10.14359/18761

Date: 4/1/2007

Abstract:
This paper summarizes the experimental and analytical research work for simulating a recently built retaining masonry wall post-tensioned with carbon fiber reinforced polymer (CFRP) tendons. A group of creep and shrinkage experiments on masonry prisms similar to that used in the masonry diaphragm wall is discussed. A theoretical investigation using numerical models to describe the time-dependent deformations of the masonry diaphragm wall was performed. Creep coefficients based on the experiments are compared to common creep values based on other research investigations and on well established code models. A finite element model of the masonry diaphragm wall was developed incorporating the non-linear time-dependent properties of masonry to investigate the long-term deformations and stress redistribution in the walls over time. Deformations of the walls are compared to observations from a continuous monitoring system observing the lateral deformations and strains and stresses of the wall.