Low-Cycle Fatigue Criteria for the Seismic Design of Concrete Structures with High Strength Reinforcing Steel
Building Information Models (BIM)
May 2016 - March 2018
Gregory G. Deierlein, J.A. Blume Professor of Engineering
Dominic Kelly, Simpson Gumpertz and Heger, Inc., Boston
Andrew Taylor, KPFF, Seattle, David Fields, Magnusson Klemencic Associates, Seattle
Ronald Hamburger, Simpson Gumpertz and Heger, Inc., San Francisco
American Concrete Institute (ACI),
Concrete Reinforcing Steel Institute (CRSI)
This project will help establish cyclic deformation (strain) demands and acceptance criteria for low-cycle fatigue resistance of steel reinforcement in concrete structures subjected to earthquakes. Together with supporting data and information from other research involving testing of reinforced concrete components, the data on cyclic loading demands and reliability- based acceptance criteria that are developed through this project will facilitate the safe use of HS reinforcement in seismic force resisting systems.
The key objectives of this project are to (1) develop a reliability-based methodology for determining the minimum required low-cycle fatigue resistance of steel reinforcement in the seismic design of concrete structures, (2) apply the methodology to assess the cyclic strain/deformation demands in concrete components for a series of archetype concrete shear wall and frame building structures subjected to earthquakes, and (3) develop acceptance criteria for steel reinforcement in concrete structures, which are consistent with the seismic reliability criteria for buildings in ASCE 7 and related building code standards.
Interim Report 1
Interim Report 2
Draft Final Report