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1. Historical Earthquake-Resistant Timber Framing in the Mediterranean Area : HEaRT 2015

Author

Helena Cruz, José Saporiti Machado, Alfredo Campos Costa, Paulo Xavier Candeias, Nicola Ruggieri, José Manuel Catarino, Helena Cruz, José Saporiti Machado, Alfredo Campos Costa, Paulo Xavier Candeias, Nicola Ruggieri, and José Manuel Catarino

Subjects
Wooden-frame buildings--Earthquake effects--Mediterranean Region
Abstract

This book presents a selection of the best papers from the HEaRT 2015 conference, held in Lisbon, Portugal, which provided a valuable forum for engineers and architects, researchers and educators to exchange views and findings concerning the technological history, construction features and seismic behavior of historical timber-framed walls in the Mediterranean countries. The topics covered are wide ranging and include historical aspects and examples of the use of timber-framed construction systems in response to earthquakes, such as the gaiola system in Portugal and the Bourbon system in southern Italy; interpretation of the response of timber-framed walls to seismic actions based on calculations and experimental tests; assessment of the effectiveness of repair and strengthening techniques, e.g., using aramid fiber wires or sheets; and modelling analyses. In addition, on the basis of case studies, a methodology is presented that is applicable to diagnosis, strengthening and improvementof seismic performance and is compatible with modern theoretical principles and conservation criteria. It is hoped that, by contributing to the knowledge of this construction technique, the book will help to promote conservation of this important component of Europe's architectural heritage.

Published
2016

2. Experimental investigation on the seismic performance of masonry buildings using shaking table testing

Author

Alfredo Campos Costa, Leonardo Avila, Nuno Mendes, Graça Vasconcelos, J.Pedro Pedro Alves, Paulo B. Lourenço, and Universidade do Minho

Subjects
Engineering, Scale (ratio), 0211 other engineering and technologies, 020101 civil engineering, 02 engineering and technology, 0201 civil engineering, Bed joint reinforcement, Brittleness, 11. Sustainability, Geotechnical engineering, Response spectrum, Reinforcement, Civil and Structural Engineering, Shaking-table tests, 021110 strategic, defence & security studies, Science & Technology, Experimental analysis, business.industry, Masonry buildings, Building and Construction, Structural engineering, Shaking table testing, Masonry, Geotechnical Engineering and Engineering Geology, Cracking, Geophysics, Concrete block masonry, Seismic performance, Behavior factor, Earthquake shaking table, Unreinforced masonry building, business
Abstract

Masonry buildings worldwide exhibited severe damage and collapse in recent strong earthquake events. It is known that their brittle behavior, which is mainly due to the combination of lowtensile strength, largemass and insufficient connection between structural elements, is the main limitation for their structural implementation in residential buildings. A new construction system for masonry buildings using concrete blocks units and trussed reinforcement is presented here and its seismic behavior is validated through shaking table tests. Dynamic tests of two geometrically identical two-story reduced scale (1:2) models have been carried out, considering artificial accelerograms compatible with the elastic response spectrum defined by the Eurocode 8. The first model was reinforced with the new proposed system while the second modelwas built with unreinforced masonry. The experimental analysis encompasses local and global parameters such as cracking patterns, failure mechanisms, and in-plane and out-of-plane behavior in terms of displacements and lateral drifts from where the global dynamic behavior of the two buildings is analyzed comparatively. Finally, behavior factors for the design recommendations in case of unreinforced masonry are alsoevaluated., QREN (POFC) - ADI - Agência de Inovação

Published
2013

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