PCI eLearning Course T225: Case Studies and Emerging Developments of Full-Depth Precast Concrete Deck Panels-Behavior of Full Depth Panels in Bridge Deck Reconstruction

Behavior of Full Depth Panels in Bridge Deck Reconstruction

Pdf Summary

The study investigated the composite behavior and shear connection system of full-depth precast concrete slabs and prestressed concrete girders used in bridge deck replacement. The system uses threaded steel bolts as shear connectors. Thirteen push-out specimens were tested under static loading to determine the ultimate strength and failure mode of the shear connection system. The study found that threaded steel bolts are capable of achieving full composite action between the precast concrete panels and girders. The application of load and resistance factor design guidelines conservatively estimated the design strength of the shear connection. The study observed that the number, configuration, and length of bolts had minimal effects on the shear strength. The ultimate shear strength increased proportionally with the number of bolts per pocket. The study also compared the test results with the ACI 318-02 code, AASHTO standard specifications, and AASHTO LRFD specifications. It found that the test results were within the limit of these specifications. The study concluded that threaded steel bolts can provide the necessary shear strength for full composite action between precast concrete slabs and girders. The shear connection system can be designed using the AASHTO LRFD code and the ACI 318-02 code.

Keywords

composite behavior

shear connection system

precast concrete slabs

prestressed concrete girders

threaded steel bolts

ultimate strength

failure mode

design strength

shear strength

ACI 318-02 code