Skip to main content

Application of Accelerated Bridge Construction Connections in Moderate-to-High Seismic Regions (2011) / Chapter Skim
Currently Skimming:


Pages 43-47

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 43...
... However, their use in moderate-to-high seismic regions of the country has been limited, because the conventional, linear, precast elements used with ABC cause the connections to be located at the intersections of framing elements, and those locations are typically the regions expected to experience the highest demands under earthquake loading. Accordingly, significant work is under way and more is needed to ensure that ABC connections can meet the required seismic performance, in addition to having the necessary non-seismic properties of constructability, cost effectiveness, durability, and inspectability.
Read the entire page →
From page 44...
... • The infill classification indicates that in one or more steps, the needed information has been partially, but not fully, developed. In some cases, the partial knowledge may justify use of the technology in moderate seismic areas where 44 Connection Type Catch-up Infill Advancement Bar couplers Grouted ducts Pocket Socket Hybrid Integral Emerging Table 34.
Read the entire page →
From page 45...
... Open questions include not only the cyclic response of the couplers themselves, but also system effects, such as the influence of the coupler stiffness on the strain distribution in the plastic hinge zone and its effects on the strain penetration in the opposing connected element and on the overall deformation capacity of a coupled-bar system. Because grouted sleeve bar couplers have already been deployed in seismic regions, the paucity of cyclic performance data for that type of bar coupler represents a serious shortcoming, so they are placed in the "catch-up" category.
Read the entire page →
From page 46...
... By addressing the infill effort judged to be remaining for grouted duct, pocket, and socket connections, the suggested work will enable a complete pier system to be deployed with confidence in moderate-to-high seismic areas. Of these, the grouted duct and pocket connections are particularly well suited for the column to cap beam connection, and the grouted duct and socket connection types are suited to the foundation connection.
Read the entire page →
From page 47...
... Beyond these near-term goals and to the extent possible, development should continue on technologies that will provide enhanced seismic performance, in addition to enhancing ABC, and that will benefit more specialized bridge types that are used in smaller numbers.
Read the entire page →

Key Terms

  • elastomeric bearing
  • cap beam
  • bridge engineering
  • connection type
  • seismic application

  • cap beams
  • precast concrete
  • pocket connections
  • surrounding concrete
  • stage cap

  • grouted ducts
  • integral connections
  • bar couplers
  • seismic performance
  • grouted duct

  • readiness level
  • superior seismic
  • shake table
  • seismic region
  • bar coupler

  • socket connections
  • seismic regions
  • pocket connection
  • knowledge gaps
  • connection types

  • cyclic loading
  • static strength
  • grouted sleeve
  • cip construction
  • girder bridge


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.