H. Pereira
University of Aveiro
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Publication
Featured researches published by H. Pereira.
International Journal of Architectural Heritage | 2018
Dora Silveira; Humberto Varum; Aníbal Costa; H. Pereira; Laura Sarchi; Ricardo Monteiro
ABSTRACT This article addresses the laboratory testing of a full-scale double-T shaped adobe wall, under in-plane horizontal cyclic loading of increasing amplitude, with the aim of contributing to the understanding of the seismic behavior of adobe structures. The wall was built with lime adobes taken from an existing building and mortar with a traditional composition. The behavior of the wall was assessed in terms of: shear stress versus horizontal drift and moment versus rotation relationships; maximum lateral strength; drift and rotation at peak stress; evolution of stiffness, lateral displacements, dissipated energy, and natural frequency; and damage pattern. The wall exhibited brittle behavior and in-plane strength corresponding to 56% of the vertical load. Cracking was observed with an X-shaped pattern whereas no sliding occurred at its base. This research supported the subsequent development of a repair and retrofit solution and also of numerical models to simulate the seismic behavior of two adobe buildings.
Frattura ed Integrità Strutturale | 2014
H. Pereira; Vitor M. C. F. Cunha; José Sena-Cruz
The usage of rebars in construction is the most common method for reinforcing plain concrete and thus bridging the tensile stresses along the concrete crack surfaces. Usually design codes for modelling the bond behaviour of rebars and concrete suggest a local bond stress - slip relationship that comprises distinct reinforcement mechanisms, such as adhesion, friction and mechanical anchorage. In this work, numerical simulations of pullout tests were performed using the finite element method framework. The interaction between rebar and concrete was modelled using cohesive elements. Distinct local bond laws were used and compared with ones proposed by the Model Code 2010. Finally an attempt was made to model the geometry of the rebar ribs in conjunction with a material damaged plasticity model for concrete.
Construction and Building Materials | 2012
Dora Silveira; Humberto Varum; Aníbal Costa; Tiago Martins; H. Pereira; João Almeida
AdobeUSA 2007 | 2007
Humberto Varum; A. Costa; Dora Silveira; H. Pereira; João Almeida; Tiago Martins
Mecânica Experimental: revista da Associação Portuguesa de Análise Experimental de tensões | 2008
Humberto Varum; A. Costa; H. Pereira; João Almeida; Hugo Rodrigues
V Seminário de Arquitectura de Terra em Portugal | 2007
Daniel V. Oliveira; Humberto Varum; Rui André Martins Silva; H. Pereira; Paulo B. Lourenço; Aníbal Costa
III Congreso Internacional de Arquitectura de Tierra: Tradición y Innovacón | 2006
Humberto Varum; A. Costa; H. Pereira; João Almeida; Hugo Rodrigues
V Seminário de Arquitectura de Terra em Portugal | 2007
Aníbal Costa; Humberto Varum; H. Pereira; Hugo Rodrigues; Romeu Vicente; António Arêde; Alexandre A. Costa
MATERIAIS 2007 – 13th Conference of Sociedade Portuguesa de Materiais / IV International Materials Conference Symposium – A Materials Science Forum: “Global Materials for the XXI Century: Challenges to Academia and Industry” | 2007
Humberto Varum; A. Costa; H. Pereira; João Almeida; Dora Silveira
TerraBrasil 2006: I Seminário Arquitetura e Construção com Terra no Brasil / IV Seminário Arquitectura de Terra em Portugal | 2006
Humberto Varum; A. Costa; H. Pereira; João Almeida