Seismic Vulnerability of the Highway System

Task F3-1(b); Geotechnical Performance Criteria Workshop
Subject Area: NCHRP Project 12-49 Supporting Studies

Principal Investigator(s) and Institution(s)
Donald G. Anderson, CH2M Hill
Geoffrey R. Martin, University of Southern California

Objective and Approach
NCHRP Project 12-49 is developing a new seismic design specification and commentary intended as a replacement for the current provisions in the AASHTO LRFD Bridge Design Specifications. Funding for NCHRP Project 12-49 is sufficient to develop the specifications, commentary, and selected design examples but was not intended to support special studies or research that may have been required to address unique or special technical issues. Task F3 is intended to provide technical support during the development of the LRFD specifications, and assist in the development of training materials and workshops following it's conclusion.

Task F3-1(b) will support the development and conduct of a workshop to address various issues related to the development of performance criteria for geotechnical engineering and bridge foundation design. In past specification development efforts, this area of performance criteria has resulted in many problems that have not been adequately addressed. As a result, a workshop will be conducted at which selected geotechnical and structural engineers will develop a consensus regarding performance expectations for bridge foundations and soils, including the quantification of tolerable movements and settlements for foundation, substructure, and superstructure components.

Anticipated Start Date and Duration
June 1, 1999 - 12 months