Bridges for Service Life beyond 100 Years: Service Limit State Design
The objectives of this project are to:
Develop new design codes that incorporate a rational approach based on SLS for durability and performance of bridge systems, subsystems, components, and details that are critical to reaching the expected service life and assuring an actual life beyond 100 years. Special focus should be given to problematic systems, subsystems, components, and details. The proposed SLS will include data sets related to durability, fatigue, fracture, and redundancy as integral issues of service life as reported in SHRP 2 Project R19-A.
Develop performance measures, incorporating predefined component classifications that will utilize full probability-based service life design criteria to maximize the actual life of the system. Consider material performance (including durability), structural performance of systems, subsystems, and components (optimum joints and bearings), and design practices leading to longer and more predictable service life.
Develop comprehensive design procedures, proposed specification changes, and implementation tools that include durability design in addition to structural design. In the conduct of this development, consider structural and material redundancy, and system, subsystem, and component performance measures that will utilize service life design criteria to maximize the actual life of the system. The adjustments to SLS should not adversely affect ULS and extreme event limit states.
