A Class of V-Connectors for Bridge Deck-Pier and Pier-Footing Joints with Combined Advantage of Integrated Design and Seismic Isolation while Enabling ABC

This project will develop a class of V-connectors for bridge deck-piers and pier-footing joints to provide seismic isolation while facilitating accelerated bridge construction and retrofit. The work is being performed in two stages. Work in Stage 1 focuses on the analysis and design of the V-connector family. The analysis involves two tasks: (i) development of a theoretical model to obtain the generalized principle of the relationship between key design parameters and the connector’s performance for seismic protection; and (ii) establishing the numerical model that is able to screen and quantify the design parameters for a regular bridge at a site with seismic parameters given by the American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Manual Section 3. The connectors are to be designed with the following two options: (i) work with partner state departments of transportation (DOTs) to identify at least one bridge project that could use the product and then design the connector for that particular bridge based on the theoretic model and numerical analysis developed earlier in the project; or (ii) design the connector to fit the bridge types listed by the AASHTO LRFD Manual. A set of designed connectors will be fabricated for shake-table tests. Contacts with a connector manufacturer and state DOTs will be made to discuss connector manufacturing and identify suitable bridge sites. Work in the second and final stage will involve shake-table tests and completing at least one set of connector design, based on original design and shake-table test results. The connector will be manufactured and implemented on an actual bridge under construction. Two tasks of the designated analysis have been committed: (i) a two-degree theoretical model has been established based on the one-degree model currently applied by AASHTO LRFD manual, whereby the key is to using hysteretic curve to determine the damping coefficient. It has been identified that the natural friction between the connected surface-pair provides sufficient damping for seismic isolation, which is also the unique advantage for the invented V-connector family. (ii) 3D-finite element models have been established for screening optimized design parameters with the best performance, for which the analysis of the data is on-going. A visit was made to the University of California-Berkeley laboratory to discuss and arrange for the test plan.

Language

  • English

Project

  • Status: Active
  • Funding: $135975
  • Contract Numbers:

    Project 20-30, IDEA 188

  • Sponsor Organizations:

    Safety Innovations Deserving Exploratory Analysis (IDEA)

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    American Association of State Highway and Transportation Officials (AASHTO)

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

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Jawed, Inam

  • Performing Organizations:

    ACII, Incorporated

    43 Bower Tree
    Irvine, CA  United States 
  • Principal Investigators:

    Hao, Su

  • Start Date: 20160218
  • Expected Completion Date: 0
  • Actual Completion Date: 0
  • Source Data: RiP Project 40611

Subject/Index Terms

Filing Info

  • Accession Number: 01598869
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-30, IDEA 188
  • Files: TRB, RiP
  • Created Date: Feb 18 2016 1:00AM