Deflection Control Methodologies for Curvilinear Concrete Members Reinforced with Glass Fiber-Reinforced Polymer Bars
Seyed Mohammad Hosseini, Salaheldin Mousa, Hamdy M. Mohamed, and Brahim Benmokrane
Appears on pages(s):
curvilinear reinforced concrete (RC) members; deflection; effective moment of inertia; glass fiber-reinforced polymer (GFRP); precast concrete tunnel lining (PCTL) segments; reinforced concrete (RC)
This paper reports the results of a comprehensive analytical
study implemented to develop deflection prediction methodologies for curvilinear reinforced concrete (RC) members with glass fiber-reinforced polymer (GFRP) reinforcement, focusing on precast concrete tunnel lining (PCTL) segments. The first step involved modifying the procedures for estimating elastic deflection, cracking moment, and cracked moment of inertia, which were then introduced for use with curvilinear members. In the next step, three
methodologies of effective moment of inertia, integration of curvature, and integration of curvature considering tension stiffening were developed for curvilinear members. Then, the analytical results were compared to the experimental database, and a novel method was developed for predicting deflection in curvilinear GFRP-RC members. In the third and final step, a procedure was developed to adapt the presented methodologies for use with a tunnel segment under real load and boundary conditions. The results indicate that the proposed method could predict the deflection of curvilinear
GFRP-RC members with high accuracy.