000019379 001__ 19379
000019379 005__ 20170118182315.0
000019379 04107 $$aeng
000019379 046__ $$k2017-01-09
000019379 100__ $$aRivas, Jorge
000019379 24500 $$aExperimental Response of RC Walls With Openings Under Cyclic Loading

000019379 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019379 260__ $$b
000019379 506__ $$arestricted
000019379 520__ $$2eng$$aThe Mw 8.8 earthquake in 2010 in Chile damaged several reinforced concrete (RC) structures, where many walls elements failed. This type of element is the preferred option used in residential buildings. According to the Chilean design practice, these walls usually have complex geometry and discontinuities in height, mainly in the first story or the first underground floor where architectural requirements impose openings at the base or present hanging walls. Nowadays, the Chilean codes do not provide special provisions for any kind of discontinuities. This paper shows the results of an experimental study of walls specimens with an opening at the base, where inelastic deformation is expected. The main objective is giving design recommendations for modeling and detailing. In particular, information will be provided regarding evaluation of the maximum compressive strain, which is used currently for detailing using a displacement-based procedure for continuous (non-perforated) walls. Four walls are constructed with the same dimensions (2.65 m height, 0.9 m large and 0.15 m thickness) and different shapes of the opening (15% and 30% of the length, and 11% and 22% of the wall height) –always at the base- and tested under constant axial load of about 0.07f’cAg, while cyclic lateral pseudo-static loading is applied at the top of the wall. The walls were made using typical materials in the common practice (concrete strength of 25MPa and steel yield stress of 420 MPa). One of the specimens presents slab elements at the base to be able to capture their influence in the wall response. The results indicate that the lateral strength is similar in all cases, which implies that flexural yielding is achieved for all specimens that presented similar longitudinal reinforcement. However, displacement capacity varies with opening size. All specimens with openings have less ductility, where the specimen with wider and taller opening reduced its displacement capacity by about 30% compared to the continuous wall. The width of the opening was more influential than the height in the displacement capacity. The slab presented a beneficial effect in the displacement capacity.

000019379 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019379 653__ $$aexperimental study; slender wall; openings; slabs; cyclic loading.

000019379 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019379 720__ $$aRivas, Jorge$$iHerrera, Ricardo$$iMassone, Leonardo$$iMuñoz, Gonzalo
000019379 8560_ $$ffischerc@itam.cas.cz
000019379 8564_ $$s925431$$uhttps://invenio.itam.cas.cz/record/19379/files/3516.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3516.
000019379 962__ $$r16048
000019379 980__ $$aPAPER