Avaliação do efeito das alvenarias no espetro de resposta de piso de edifícios de betão armado

• Type: Article in National Scientific Journal
• Date: 2019

Authors

André Furtado (Author) FEUP; Hugo Rodrigues (Author) Other; António Arêde (Author) FEUP

Journal

Title: Revista Portuguesa de Engenharia de Estruturas

Serial No. III No. 11

Pages: 51-60

ISSN: 0870-984X

Publisher: LNEC - Laboratório Nacional de Engenharia Civil

Scientific classification

CORDIS: Technological sciences > Engineering > Civil engineering > Structural engineering

FOS: Engineering and technology > Civil engineering

Other information

Resumo (PT): As paredes de alvenaria de enchimento podem influenciar, favoravelmente ou não, a resposta de um edifício de betão armado quando sujeito a uma dada ação sísmica. Torna-se então imprescindível uma avaliação e quantificação do efeito da sua presença na resposta sísmica de edifícios de betão armado. O objetivo do presente trabalho é estudar o efeito da presença das paredes de alvenaria de enchimento no espetro de resposta de piso de um edifício de betão armado com 8 pisos. Este estudo procura avaliar a variação do espetro de resposta de piso usando diferentes metodologias de modelação numérica, considerando ou não os painéis de alvenaria de enchimento e, quando estes são considerados, avaliando as diferenças entre o comportamento no plano e fora do plano.

Abstract (EN): The presence of the infill masonry walls in reinforced concrete buildings is very common. However, and even today, during the design process of new buildings and in the structural safety assessment of existing ones, infills are usually considered as nonstructural elements, and their influence in the structural response is disregarded. The infill walls’ presence is recognized to have an important role in the global structural behaviour and in the RC framed building structures performance when subjected to earthquake demands, as proved in the most recent earthquakes in Europe where it was observed a poor seismic performance of many RC buildings with extensive damages in the structural and non-structural elements. The major goal of this paper is to present a numerical study on the effect of the infill walls in the floor response spectra of an 8-storey building that was subjected to incremental dynamic analyses. Two different models, with and without infill panels, were built in the software OpenSees and the results analyzed were the floor accelerations and velocities. Those results are compared with the limits and reference values suggested by the international codes, particularly with Eurocode 8 recommendations.

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 10