Project

High-Strength Steel Bars in Reinforced Concrete Walls: Influence of Mechanical Properties of Steel on Deformation Capacity

Research purpose

A study of the effects of uniform elongation and ft/fy on the deformation capacity of unsymmetrical walls has been identified by members of ATC 115 as a high-priority item. Results from this study will provide a basis for defining acceptable mechanical properties in specifications of high-strength steel reinforcing bars. Because of their geometry, tests of flanged walls are critical for evaluating the reinforcement strain capacity needed to ensure that earthquake-resistant structures have acceptable drift capacity. The primary aim of this study is to determine the minimum uniform elongation required of high-strength reinforcing bars used in seismic applications. The study will also examine whether ft/fy impacts the required minimum uniform elongation by altering the spread of plasticity in the vicinity of the wall-yielding region.

Grantee
University of Kansas
Project Area
Structural Engineering
CPF research grant #
06-14
Award amount
$112,000
Grant period
Dec 2014 - Dec 2016
Grant Status
Complete
Principal Investigator
Andres Lepage, Ph.D.
Industry champions

Ramon Gilsanz – Gilsanz Murray Steficek
Dave Fields – MKA
Dominic Kelly – SGH
Conrad Paulson – WJE

CPF allies
Downloads

High-Strength Steel Bars in Earthquake-Resistant T-Shaped Concrete Walls
Mohammad Sajedul, Huq Alexander, S. Weber-Kamin, Shahedreen Ameen, Rémy D. Lequesne, Andrés Lepage

High-Strength Steel Bars in Reinforced Concrete Walls: Influence of Steel Mechanical Properties on Deformation Capacity
Mohammad Sajedul, Huq Alexander, S. Weber-Kamin, Shahedreen Ameen, Rémy D. Lequesne, Andrés Lepage