000009603 001__ 9603
000009603 005__ 20141205150222.0
000009603 04107 $$aeng
000009603 046__ $$k2008-10-12
000009603 100__ $$aCahís, Xavier
000009603 24500 $$aSeismic Evaluation of Old RC Waffle Flat-Plate Systems

000009603 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009603 260__ $$b
000009603 506__ $$arestricted
000009603 520__ $$2eng$$aIn moderate-seismicity southern European countries it is very common to use reinforced concrete waffle flat-plate structures for sustaining both vertical and lateral earthquake loads. In the case of Spain, many of these structures were designed during the seventies, eighties and nineties according to earlier seismic codes which required relatively small lateral strength and did not contain any provision for attaining ductility. Past earthquakes have raised serious concerns about the safety of these structures in the case of a severe earthquake. In this paper, a numerical investigation is carried out to evaluate the seismic demands on old RC waffle plate systems located in southern Spain, in a moderate-to-high seismicity region. A prototype building, designed according to Spanish codes from the 1970´s to 1990´s and current construction practices, was analysed with SAP2000 by using a non-linear static method. The frame model was equipped with user defined hinges based on testing. The low gravity shear ratio and the consideration of punching reinforcement (a usual Spanish practice even when it was not deemed necessary from calculation) leads to a strong column/weak slab behaviour.

000009603 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009603 653__ $$awaffle flat-plate system, seismic resistance, existing building, hinge modelling

000009603 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009603 720__ $$aCahís, Xavier$$iBenavent-Climent, A.$$iCatalán, Ariel
000009603 8560_ $$ffischerc@itam.cas.cz
000009603 8564_ $$s327893$$uhttps://invenio.itam.cas.cz/record/9603/files/S15-045.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S15-045.
000009603 962__ $$r9324
000009603 980__ $$aPAPER