Structural Behavior of Construction Joints in a Composite Rigid-Frame Bridge

Structural Behavior of Construction Joints in a Composite Rigid-Frame Bridge

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Abstract Composite rigid-frame bridges with steel girders have excellent structural performance, but behavioral inconsistency appears at Trousers the connection between the steel girder and concrete pier.In addition, composite rigid-frame bridges are challenging to construct owing to the need to connect different materials at the pier.Therefore, this study developed and demonstrated a composite rigid-frame bridge with a construction joint and anchors.The structural performance and composite behavior of the proposed construction joint were investigated by evaluating a direct connection between the girder and concrete prior to casting (Joint A), a plain construction joint (Joint B), and a construction joint with anchors (Joint C).Joints B and C exhibited 16.

5% and 46.5% higher ultimate capacities, respectively, than did Joint A.Finite element analysis of Joint C was conducted, and its results were verified against the experimental results.Further, parameter analysis was performed to determine the effects Twin/Full Bunk Bed of the steel girder strength and anchor diameter.The results indicated that the proposed construction joint with anchors exhibited excellent structural performance and composite behavior.