Recently, an investigation was carried out on the residual strength of a full-scale bridge that experienced 3 million cycles of rolling load. The test outcomes for two bridge deck sections measuring 3.81 m × 3.89 m × 0.21 m each are presented in this paper. The two sections are reinforced with glass fiber-reinforced polymer (GFRP) stay-in-place (SIP) form and GFRP rebar, respectively. Both reinforcement configurations were designed in compliance with the empirical design method specified in the Canadian Highway and Bridge Design Code (CHBDC). Prior to the punching shear test, both sections went through 3 million cycles of rolling load at a load level of 180 kN. The rolling load fatigue experiment was carried out using the Rolling Load Simulator (ROLLS) at Queen’s University, which is the first and only of its kind in Canada. This study aims to investigate the residual strength and failure patterns of bridge deck sections reinforced with GFRP SIP forms and GFRP rebar after extensive fatigue damage induced by realistic rolling loads.

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Residual Strength of Bridge Deck Following Rolling Load Fatigue

  • Xiaojing Wu,
  • Chongxi Gao,
  • Amir Fam

摘要

Recently, an investigation was carried out on the residual strength of a full-scale bridge that experienced 3 million cycles of rolling load. The test outcomes for two bridge deck sections measuring 3.81 m × 3.89 m × 0.21 m each are presented in this paper. The two sections are reinforced with glass fiber-reinforced polymer (GFRP) stay-in-place (SIP) form and GFRP rebar, respectively. Both reinforcement configurations were designed in compliance with the empirical design method specified in the Canadian Highway and Bridge Design Code (CHBDC). Prior to the punching shear test, both sections went through 3 million cycles of rolling load at a load level of 180 kN. The rolling load fatigue experiment was carried out using the Rolling Load Simulator (ROLLS) at Queen’s University, which is the first and only of its kind in Canada. This study aims to investigate the residual strength and failure patterns of bridge deck sections reinforced with GFRP SIP forms and GFRP rebar after extensive fatigue damage induced by realistic rolling loads.