000019562 001__ 19562
000019562 005__ 20170118182324.0
000019562 04107 $$aeng
000019562 046__ $$k2017-01-09
000019562 100__ $$aPampanin, Stefano
000019562 24500 $$aNumerical Investigations on Rectangular Squat Renforced Concrete Walls Under Bi-Directional Loading

000019562 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019562 260__ $$b
000019562 506__ $$arestricted
000019562 520__ $$2eng$$aIn recent earthquakes in Chile and New Zealand (2010 and 2011, respectively), reinforced concrete (RC) walls underwent failure mechanisms which were not observed/reported in previous earthquakes. Some of these failure modes included out-of-plane displacements, which could potentially result from bi-directional excitations. As a result, a global concern has risen on the contribution of bi-directional loading towards performance and failure mechanisms of RC walls. Nevertheless the effects of bi-directional loading on design/assessment of rectangular walls have not yet been scrutinized. Squat RC walls are widely used as lateral load resisting system in different structures. Few investigations are carried out on seismic behaviour of such walls. There is still a significant uncertainty regarding the behaviour of these walls under earthquake loading as well as their failure mechanisms, and strengths and deformation capacities. This paper presents results of a preliminary numerical investigation on the effect of bi-directional loading on rectangular squat RC walls. The numerical study is conducted using Finite Element (FE) analysis by DIANA. The FE model has been verified against experimental tests in another study. This preliminary parametric study is performed in order to identify the key parameters influencing seismic performance of rectangular squat RC walls under uni- and bidirectional loadings. Parameters such as confinement length, thickness, shear reinforcement and longitudinal reinforcement ratios are investigated in this study. The study also evaluates the effect of bi-directional loading on the stiffness, strength and drift capacity and failure modes of squat walls. More walls will be investigated for each parameter in a future study by the authors.

000019562 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019562 653__ $$arectangular squat RC walls; numerical parametric study; bi-directional loading; crack width; failure mode

000019562 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019562 720__ $$aPampanin, Stefano$$iAshtiani, Mohammad Soleymani$$iDhakal, Rajesh$$iNiroomandi, Arsalan
000019562 8560_ $$ffischerc@itam.cas.cz
000019562 8564_ $$s1807351$$uhttps://invenio.itam.cas.cz/record/19562/files/3900.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3900.
000019562 962__ $$r16048
000019562 980__ $$aPAPER