Dynamic Effects and Friction Values of Bridge Moves for ABC Bridges

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CAIT project no.: CAIT-UTC-NC13

Fiscal Year: 2014/2015

Status: Final

Rutgers-CAIT Author(s): Marvin Halling, Ph.D., Utah State University, Paul Barr, Ph.D., Utah State University, Patrick Szary, Ph.D., CAIT

External Author(s): Michael P. Culmo, Vice President of Transportation and Structures

Sponsor(s): USDOT-FHWA, CME Associates, Inc.


One Accelerated Bridge Construction (ABC) technique that is being utilized in many locations throughout the US is the construction of bridge superstructures off site and then moving the bridge into position.  This method relies on Self-Propelled Modular Transporters (SPMTs).  The bridge superstructure undergoes both vertical and horizontal accelerations due to lifting and moving.  The proposed work is to perform field tests of several SPMT configurations in order to ascertain appropriate coefficients for use of designers for bridges that will be carried by SPMTs.  This fieldwork will be supplemented by modeling to broaden the applicability of the results.

Another essential question that must be addressed regarding ABC construction is determining the appropriate friction values for bridge sliding and bridge launching.  These friction values are crucial in the design process and the variability of the friction must be better defined.  The proposed work in this area is an extensive literature search with any deficiencies being filled by laboratory testing conducted in the SMASH lab at Utah State University.