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Journal of Composites for Construction

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Volume 16 Issue 3 - June 2012

Numerical Investigations on the Seismic Behavior of FRP and TRM Upgraded RC Exterior Beam-Column Joints

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Technical Papers

Numerical Investigations on the Seismic Behavior of FRP and TRM Upgraded RC Exterior Beam-Column Joints

Mohammad S. Alhaddad; Nadeem A. Siddiqui; Aref A. Abadel; Saleh H. Alsayed; and Yousef A. Al-Salloum
Abstract

In this paper, a detailed procedure for nonlinear finite-element analysis of fiber reinforced polymer (FRP) and textile reinforced mortar (TRM) upgraded reinforced concrete (RC) beam-column exterior joints is presented for predicting their seismic performance under simulated earthquake loading. The finite-element (FE) model was developed using a smeared cracking approach for concrete and three-dimensional layered elements for the FRP and TRM-composites. The results obtained from FE analysis were compared with the test results. The tests were conducted on four as-built exterior beam-column joint specimens under simulated seismic loads. Out of these four specimens, one specimen was tested as a control specimen and the other three were tested after strengthening with TRM, carbon FRP, and glass FRP sheets, respectively. The FE results were compared with the test results through load-displacement behavior, ultimate loads, and crack pattern. Comparison of FE results with the experimentally observed response indicated that the proposed nonlinear FE model can accurately predict the behavior and response of tested RC beam-column joints.

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Authors

Mohammad S. Alhaddad
Associate Professor, Dept. of Civil Engineering, King Saud Univ., Riyadh 11421, Saudi Arabia.
Nadeem A. Siddiqui
Associate Professor, Dept. of Civil Engineering, King Saud Univ., Riyadh 11421, Saudi Arabia (corresponding author). E-mail: nadeem@ksu.edu.sa
Aref A. Abadel
M.Sc. Student, Dept. of Civil Engineering, King Saud Univ., Riyadh 11421, Saudi Arabia.
Saleh H. Alsayed
Professor, Dept. of Civil Engineering, King Saud Univ., Riyadh 11421, Saudi Arabia.
Yousef A. Al-Salloum
Professor, Dept. of Civil Engineering, King Saud Univ., Riyadh 11421, Saudi Arabia.
https://doi.org/10.1061/(ASCE)CC.1943-5614.0000265
Received: May 16, 2011
Accepted: October 31, 2011
Published online: November 03, 2011
ASCE Subject Headings: Structural behavior, Seismic loads, Seismic effects, Mortars, Finite element method, Numerical analysis, Numerical methods, Reinforced concrete, Fiber reinforced concrete, Seismic tests, Beam columns, Fiber reinforced polymer, Joints
Journal of Composites for Construction
© 2012. American Society of Civil Engineers