000018864 001__ 18864
000018864 005__ 20170118182244.0
000018864 04107 $$aeng
000018864 046__ $$k2017-01-09
000018864 100__ $$aPampanin, Stefano
000018864 24500 $$aReinforced Concrete Wall Response Under Uni- and Bi-Directional Loading: Findings From Experimental Research and Future Research Needs

000018864 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018864 260__ $$b
000018864 506__ $$arestricted
000018864 520__ $$2eng$$aDuring an earthquake, structures are subjected to both horizontal and vertical shaking. Most structures are rather insensitive to variations in the vertical acceleration history and primary considerations are given to the impact of the horizontal shaking on the behavior of structures. In the laboratory, however, most component tests are carried out under uni-directional horizontal loading to simulate earthquake effects rather than bi-directional loading. For example, biaxial loading tests of reinforced concrete (RC) walls constitute less than 0.5% of all quasi-static cyclic tests that have been conducted. 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. To investigate the influence of bi-directional loading on RC wall performance, this paper reviews results from quasi-static cyclic tests on RC walls that are reported in the literature. Results from uni-directional tests are compared to results from bi-directional tests for walls of different cross sections including rectangular walls, T-shaped walls, and U-shaped walls. The available test data are analyzed with regard to the influence of the loading history on stiffness, strength, deformation capacity and failure mode. Walls with T-shaped and Ushaped cross sections are designed to carry loads in both horizontal directions and thus consideration of the impact of bidirectional loading on behavior should be considered. However, it is also shown that the displacement capacity of walls with rectangular cross sections is typically reduced by 20 to 30% due to bi-directional loading. Further analysis of the test data indicates that the bi-directional loading protocol selected might impact wall strength and stiffness of the test specimen. Based on these findings, future research needs with regard to the response of RC walls subjected to bi-directional loading are provided.

000018864 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018864 653__ $$aReinforced concrete walls, uni-directional loading, bi-directional loading, quasi-static cyclic tests, stiffness, strength capacity, deformation capacity

000018864 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018864 720__ $$aPampanin, Stefano$$iNiroomandi, Arsalan$$iConstantin, Raluca$$iHube, Matias$$iWallace, John$$iBeyer, Katrin
000018864 8560_ $$ffischerc@itam.cas.cz
000018864 8564_ $$s245185$$uhttps://invenio.itam.cas.cz/record/18864/files/2373.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2373.
000018864 962__ $$r16048
000018864 980__ $$aPAPER