UNR Research Projects

2nd-Cycle Projects

  • Shake Table Studies of a Bridge System with ABC Connections ABC connections for prefabricated members are particularly critical in moderate and high seismic zones because earthquake forces place high demand on inelastic deformation of adjoining columns. Structural integrity of the bridge has to be maintained by capacity-protected connections that experience little or no damage. The overall objective of the proposed study is to investigate the seismic performance of a large-scale bridge system that integrates some of the more promising ABC connections that have been proof tested as individual components.

1st-Cycle Projects – Continuing

1st-Cycle Projects – Completed

  • Evaluation of Seismic Performance of Bridge Columns with Couplers and Development of Design Guidelines:  The overall objective of this study was to compile and interpret data on seismic performance of different types of couplers and establish characteristic column plastic hinge behavior for different coupler types. The study further categorized the couplers with respect to their seismic performance. The results of the study were transformed into draft design guidelines for possible adoption by AASHTO.
  • Behavior and Design of Precast Bridge Cap Beams with Pocket Connections:  The main objective of this study was to compile and interpret data on seismic performance of cap beams with pocket connections and identify behavior, design, detailing, and construction considerations for successful implementation of this category of connections. The results of the study were transformed into design guidelines for possible adoption by AASHTO.