Proposed AASHTO Seismic Specifications for ABC Column Connections

NCHRP Research Report 935 presents proposed AASHTO seismic specifications related to the design and construction of column connections for accelerated bridge construction (ABC) with detailed design examples illustrating the application of the proposed specifications. The proposed specifications are based on comprehensive analytical and testing programs for investigating the performance of different ABC column connections including mechanical bar couplers, grouted ducts, pocket, and socket connection in moderate and high seismic regions. This report will be of immediate interest to bridge engineers. During the NCHRP Domestic Scan 11-02—Best Practices Regarding Performance of ABC Connections in Bridges Subjected to Multihazard and Extreme Events, it was noted that ABC techniques have been limited in moderate and high seismic regions. The AASHTO Guide Specifications for LRFD Seismic Bridge Design currently prohibit or limit connections that splice longitudinal column reinforcement in plastic hinge regions. To address this limitation, there was a need to identify column connections that are capable of performing well in seismic regions. Research was performed under NCHRP Project 12-105: Proposed AASHTO Seismic Specifications for ABC Column Connections by the University of Nevada, Reno to develop proposed AASHTO displacement-based design and construction specifications for implementation of ABC column connections in moderate and high seismic regions. The specifications included mechanical bar couplers, grouted ducts, pocket, and socket connections.

• Record URL:
  http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3865
• Supplemental Notes:
  • To be published as NCHRP Research Report 935 in Winter 2020.

Language

• English

Project

• Status: Completed
• Funding: $450000
• Contract Numbers:

  Project 12-105

• Sponsor Organizations:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  American Association of State Highway & Transportation Officials (AASHTO)

  444 North Capitol Street, NW, Suite 225
  Washington, DC  United States  20001

  National Cooperative Highway Research Program

  Transportation Research Board
  500 Fifth Street, NW
  Washington, DC  United States  20001
• Project Managers:

  Dekelbab, Waseem

• Performing Organizations:

  University of Nevada, Reno

  1664 N. Virginia Street
  Reno, Nevada  United States  89557
• Principal Investigators:

  Saiidi, M

• Start Date: 20150901
• Expected Completion Date: 20190731
• Actual Completion Date: 20190731
• Source Data: RiP Project 37554

Subject/Index Terms

• TRT Terms: Anchors (Structural connectors); Best practices; Bridge construction; Columns; Earthquake resistant design; Load and resistance factor design; Specifications
• Identifier Terms: AASHTO Guide Specifications for LRFD Seismic Bridge Design
• Subject Areas: Bridges and other structures; Construction; Design; Highways;

Filing Info

• Accession Number: 01543423
• Record Type: Research project
• Source Agency: Transportation Research Board
• Contract Numbers: Project 12-105
• Files: TRB, RIP
• Created Date: Nov 14 2014 1:01AM