Title:
Comparing Uni- and Bi-Directional Tests on RC Walls
Author(s):
Beyer
Publication:
Web Session
Volume:
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
10/23/2022
Abstract:
Most reinforced concrete (RC) wall tests simulate earthquake effects as uni-directional loading. Less than 1% of all quasi-static cyclic tests on RC walls have been conducted as bi-directional tests, in which walls are subjected to loading along both horizontal axes. Bi-directional tests require larger and more complex test setups than uni-directional tests and therefore should only be pursued if they provide insights and results that cannot be obtained from uni-directional tests. This presentation reviews various bi-directional loading protocols and summarizes trends with regard to stiffness, strength and deformation capacity of walls under bi-directional loading when compared to uni-directional loading. In addition, the effect of the loading history on the torsional stiffness of RC core walls is revisited. The presentation concludes with an outlook on future research needs. The presented work was initiated through a working group of the NSF SAVI Wall Institute led by Prof. John Wallace